mirror of https://github.com/apache/druid.git
json_value adjustments (#12968)
* json_value adjustments changes: * native json_value expression now has optional 3rd argument to specify type, which will cast all values to the specified type * rework how JSON_VALUE is wired up in SQL. Now we are using a custom convertlet to translate JSON_VALUE(... RETURNING type) into dedicated JSON_VALUE_BIGINT, JSON_VALUE_DOUBLE, JSON_VALUE_VARCHAR, JSON_VALUE_ANY instead of using the calcite StandardConvertletTable that wraps JSON_VALUE_ANY in a CAST, so that we preserve the typing of JSON_VALUE to pass down to the native expression as the 3rd argument * fix json_value_any to be usable by humans too, coverage * fix bug * checkstyle * checkstyle * review stuff * validate that options to json_value are the supported options rather than ignore them * remove more legacy undocumented functions
This commit is contained in:
Clint Wylie
GitHub
parent
7e2371bbde
commit
16f5ac5bd5
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@ -63,7 +63,7 @@ The following built-in functions are available.
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|name|description|
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|----|-----------|
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|cast|cast(expr,'LONG' or 'DOUBLE' or 'STRING' or 'LONG_ARRAY', or 'DOUBLE_ARRAY' or 'STRING_ARRAY') returns expr with specified type. exception can be thrown. Scalar types may be cast to array types and will take the form of a single element list (null will still be null). |
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|cast|cast(expr,'LONG' or 'DOUBLE' or 'STRING' or 'ARRAY<LONG>', or 'ARRAY<DOUBLE>' or 'ARRAY<STRING>') returns expr with specified type. exception can be thrown. Scalar types may be cast to array types and will take the form of a single element list (null will still be null). |
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|if|if(predicate,then,else) returns 'then' if 'predicate' evaluates to a positive number, otherwise it returns 'else' |
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|nvl|nvl(expr,expr-for-null) returns 'expr-for-null' if 'expr' is null (or empty string for string type) |
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|like|like(expr, pattern[, escape]) is equivalent to SQL `expr LIKE pattern`|
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@ -232,7 +232,7 @@ JSON functions provide facilities to extract, transform, and create `COMPLEX<jso
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| function | description |
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|---|---|
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| json_value(expr, path) | Extract a Druid literal (`STRING`, `LONG`, `DOUBLE`) value from `expr` using JSONPath syntax of `path` |
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| json_value(expr, path[, type]) | Extract a Druid literal (`STRING`, `LONG`, `DOUBLE`) value from `expr` using JSONPath syntax of `path`. The optional `type` argument can be set to `'LONG'`,`'DOUBLE'` or `'STRING'` to cast values to that type. |
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| json_query(expr, path) | Extract a `COMPLEX<json>` value from `expr` using JSONPath syntax of `path` |
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| json_object(expr1, expr2[, expr3, expr4 ...]) | Construct a `COMPLEX<json>` with alternating 'key' and 'value' arguments|
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| parse_json(expr) | Deserialize a JSON `STRING` into a `COMPLEX<json>`. If the input is not a `STRING` or it is invalid JSON, this function will result in an error.|
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@ -23,7 +23,6 @@ package org.apache.druid.query.expression;
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import com.fasterxml.jackson.core.JsonProcessingException;
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import com.fasterxml.jackson.databind.ObjectMapper;
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import com.google.common.base.Preconditions;
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import com.google.common.collect.ImmutableList;
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import org.apache.druid.guice.annotations.Json;
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import org.apache.druid.java.util.common.IAE;
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import org.apache.druid.math.expr.Expr;
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@ -50,9 +49,9 @@ public class NestedDataExpressions
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ExpressionType.fromColumnType(NestedDataComplexTypeSerde.TYPE)
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);
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public static class StructExprMacro implements ExprMacroTable.ExprMacro
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public static class JsonObjectExprMacro implements ExprMacroTable.ExprMacro
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{
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public static final String NAME = "struct";
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public static final String NAME = "json_object";
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@Override
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public String name()
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@ -104,17 +103,6 @@ public class NestedDataExpressions
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}
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}
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public static class JsonObjectExprMacro extends StructExprMacro
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{
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public static final String NAME = "json_object";
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@Override
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public String name()
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{
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return NAME;
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}
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}
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public static class ToJsonStringExprMacro implements ExprMacroTable.ExprMacro
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{
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public static final String NAME = "to_json_string";
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@ -138,7 +126,7 @@ public class NestedDataExpressions
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@Override
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public Expr apply(List<Expr> args)
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{
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class ToJsonStringExpr extends ExprMacroTable.BaseScalarMacroFunctionExpr
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final class ToJsonStringExpr extends ExprMacroTable.BaseScalarMacroFunctionExpr
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{
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public ToJsonStringExpr(List<Expr> args)
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{
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@ -203,7 +191,7 @@ public class NestedDataExpressions
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@Override
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public Expr apply(List<Expr> args)
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{
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class ParseJsonExpr extends ExprMacroTable.BaseScalarMacroFunctionExpr
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final class ParseJsonExpr extends ExprMacroTable.BaseScalarMacroFunctionExpr
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{
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public ParseJsonExpr(List<Expr> args)
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{
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@ -278,7 +266,7 @@ public class NestedDataExpressions
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@Override
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public Expr apply(List<Expr> args)
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{
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class ParseJsonExpr extends ExprMacroTable.BaseScalarMacroFunctionExpr
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final class ParseJsonExpr extends ExprMacroTable.BaseScalarMacroFunctionExpr
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{
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public ParseJsonExpr(List<Expr> args)
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{
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@ -327,11 +315,9 @@ public class NestedDataExpressions
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}
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}
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public static class GetPathExprMacro implements ExprMacroTable.ExprMacro
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public static class JsonValueExprMacro implements ExprMacroTable.ExprMacro
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{
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public static final String NAME = "get_path";
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public static final String NAME = "json_value";
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@Override
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public String name()
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@ -342,10 +328,48 @@ public class NestedDataExpressions
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@Override
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public Expr apply(List<Expr> args)
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{
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final List<NestedPathPart> parts = getArg1PathPartsFromLiteral(name(), args);
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class GetPathExpr extends ExprMacroTable.BaseScalarMacroFunctionExpr
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final List<NestedPathPart> parts = getJsonPathPartsFromLiteral(name(), args.get(1));
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if (args.size() == 3 && args.get(2).isLiteral()) {
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final ExpressionType castTo = ExpressionType.fromString((String) args.get(2).getLiteralValue());
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if (castTo == null) {
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throw new IAE("Invalid output type: [%s]", args.get(2).getLiteralValue());
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}
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final class JsonValueCastExpr extends ExprMacroTable.BaseScalarMacroFunctionExpr
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{
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public GetPathExpr(List<Expr> args)
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public JsonValueCastExpr(List<Expr> args)
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{
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super(name(), args);
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}
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@Override
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public ExprEval eval(ObjectBinding bindings)
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{
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ExprEval input = args.get(0).eval(bindings);
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return ExprEval.bestEffortOf(
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NestedPathFinder.findLiteral(unwrap(input), parts)
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).castTo(castTo);
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}
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@Override
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public Expr visit(Shuttle shuttle)
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{
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List<Expr> newArgs = args.stream().map(x -> x.visit(shuttle)).collect(Collectors.toList());
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return shuttle.visit(new JsonValueCastExpr(newArgs));
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}
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@Nullable
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@Override
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public ExpressionType getOutputType(InputBindingInspector inspector)
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{
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return castTo;
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}
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}
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return new JsonValueCastExpr(args);
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} else {
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final class JsonValueExpr extends ExprMacroTable.BaseScalarMacroFunctionExpr
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{
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public JsonValueExpr(List<Expr> args)
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{
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super(name(), args);
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}
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@ -363,18 +387,19 @@ public class NestedDataExpressions
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public Expr visit(Shuttle shuttle)
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{
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List<Expr> newArgs = args.stream().map(x -> x.visit(shuttle)).collect(Collectors.toList());
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return shuttle.visit(new GetPathExpr(newArgs));
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return shuttle.visit(new JsonValueExpr(newArgs));
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}
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@Nullable
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@Override
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public ExpressionType getOutputType(InputBindingInspector inspector)
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{
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// we cannot infer the output type (well we could say it is 'STRING' right now because is all we support...
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// we cannot infer output type because there could be anything at the path, and, we lack a proper VARIANT type
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return null;
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}
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}
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return new GetPathExpr(args);
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return new JsonValueExpr(args);
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}
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}
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}
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@ -391,8 +416,8 @@ public class NestedDataExpressions
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@Override
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public Expr apply(List<Expr> args)
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{
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final List<NestedPathPart> parts = getArg1JsonPathPartsFromLiteral(name(), args);
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class JsonQueryExpr extends ExprMacroTable.BaseScalarMacroFunctionExpr
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final List<NestedPathPart> parts = getJsonPathPartsFromLiteral(name(), args.get(1));
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final class JsonQueryExpr extends ExprMacroTable.BaseScalarMacroFunctionExpr
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{
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public JsonQueryExpr(List<Expr> args)
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{
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@ -428,114 +453,6 @@ public class NestedDataExpressions
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}
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}
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public static class JsonValueExprMacro implements ExprMacroTable.ExprMacro
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{
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public static final String NAME = "json_value";
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@Override
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public String name()
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{
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return NAME;
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}
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@Override
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public Expr apply(List<Expr> args)
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{
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final List<NestedPathPart> parts = getArg1JsonPathPartsFromLiteral(name(), args);
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class JsonValueExpr extends ExprMacroTable.BaseScalarMacroFunctionExpr
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{
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public JsonValueExpr(List<Expr> args)
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{
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super(name(), args);
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}
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@Override
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public ExprEval eval(ObjectBinding bindings)
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{
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ExprEval input = args.get(0).eval(bindings);
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return ExprEval.bestEffortOf(
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NestedPathFinder.findLiteral(unwrap(input), parts)
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);
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}
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@Override
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public Expr visit(Shuttle shuttle)
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{
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List<Expr> newArgs = args.stream().map(x -> x.visit(shuttle)).collect(Collectors.toList());
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return shuttle.visit(new JsonValueExpr(newArgs));
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}
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@Nullable
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@Override
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public ExpressionType getOutputType(InputBindingInspector inspector)
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{
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// we cannot infer the output type (well we could say it is 'STRING' right now because is all we support...
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return null;
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}
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}
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return new JsonValueExpr(args);
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}
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}
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public static class ListPathsExprMacro implements ExprMacroTable.ExprMacro
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{
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public static final String NAME = "list_paths";
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@Override
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public String name()
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{
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return NAME;
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}
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@Override
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public Expr apply(List<Expr> args)
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{
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final StructuredDataProcessor processor = new StructuredDataProcessor()
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{
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@Override
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public int processLiteralField(String fieldName, Object fieldValue)
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{
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// do nothing, we only want the list of fields returned by this processor
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return 0;
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}
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};
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class ListPathsExpr extends ExprMacroTable.BaseScalarMacroFunctionExpr
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{
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public ListPathsExpr(List<Expr> args)
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{
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super(name(), args);
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}
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@Override
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public ExprEval eval(ObjectBinding bindings)
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{
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ExprEval input = args.get(0).eval(bindings);
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StructuredDataProcessor.ProcessResults info = processor.processFields(unwrap(input));
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return ExprEval.ofType(
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ExpressionType.STRING_ARRAY,
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ImmutableList.copyOf(info.getLiteralFields())
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);
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}
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@Override
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public Expr visit(Shuttle shuttle)
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{
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List<Expr> newArgs = args.stream().map(x -> x.visit(shuttle)).collect(Collectors.toList());
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return shuttle.visit(new ListPathsExpr(newArgs));
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}
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@Nullable
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@Override
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public ExpressionType getOutputType(InputBindingInspector inspector)
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{
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return ExpressionType.STRING_ARRAY;
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}
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}
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return new ListPathsExpr(args);
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}
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}
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public static class JsonPathsExprMacro implements ExprMacroTable.ExprMacro
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{
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public static final String NAME = "json_paths";
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@ -559,7 +476,7 @@ public class NestedDataExpressions
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}
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};
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class JsonPathsExpr extends ExprMacroTable.BaseScalarMacroFunctionExpr
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final class JsonPathsExpr extends ExprMacroTable.BaseScalarMacroFunctionExpr
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{
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public JsonPathsExpr(List<Expr> args)
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{
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@ -600,9 +517,9 @@ public class NestedDataExpressions
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}
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}
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public static class ListKeysExprMacro implements ExprMacroTable.ExprMacro
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public static class JsonKeysExprMacro implements ExprMacroTable.ExprMacro
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{
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public static final String NAME = "list_keys";
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public static final String NAME = "json_keys";
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@Override
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public String name()
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@ -613,10 +530,10 @@ public class NestedDataExpressions
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@Override
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public Expr apply(List<Expr> args)
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{
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final List<NestedPathPart> parts = getArg1PathPartsFromLiteral(name(), args);
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class ListKeysExpr extends ExprMacroTable.BaseScalarMacroFunctionExpr
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final List<NestedPathPart> parts = getJsonPathPartsFromLiteral(name(), args.get(1));
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final class JsonKeysExpr extends ExprMacroTable.BaseScalarMacroFunctionExpr
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{
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public ListKeysExpr(List<Expr> args)
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public JsonKeysExpr(List<Expr> args)
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{
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super(name(), args);
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}
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@ -636,7 +553,7 @@ public class NestedDataExpressions
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public Expr visit(Shuttle shuttle)
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{
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List<Expr> newArgs = args.stream().map(x -> x.visit(shuttle)).collect(Collectors.toList());
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return shuttle.visit(new ListKeysExpr(newArgs));
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return shuttle.visit(new JsonKeysExpr(newArgs));
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}
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@Nullable
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@ -646,18 +563,7 @@ public class NestedDataExpressions
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return ExpressionType.STRING_ARRAY;
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}
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}
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return new ListKeysExpr(args);
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}
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}
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public static class JsonKeysExprMacro extends ListKeysExprMacro
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{
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public static final String NAME = "json_keys";
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@Override
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public String name()
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{
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return NAME;
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return new JsonKeysExpr(args);
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}
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}
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@ -676,39 +582,18 @@ public class NestedDataExpressions
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}
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static List<NestedPathPart> getArg1PathPartsFromLiteral(String fnName, List<Expr> args)
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static List<NestedPathPart> getJsonPathPartsFromLiteral(String fnName, Expr arg)
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{
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if (!(args.get(1).isLiteral() && args.get(1).getLiteralValue() instanceof String)) {
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if (!(arg.isLiteral() && arg.getLiteralValue() instanceof String)) {
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throw new IAE(
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"Function[%s] second argument [%s] must be a literal [%s] value",
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fnName,
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args.get(1).stringify(),
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ExpressionType.STRING
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);
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}
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final String path = (String) args.get(1).getLiteralValue();
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List<NestedPathPart> parts;
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try {
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parts = NestedPathFinder.parseJsonPath(path);
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}
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catch (IllegalArgumentException iae) {
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parts = NestedPathFinder.parseJqPath(path);
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}
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return parts;
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}
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static List<NestedPathPart> getArg1JsonPathPartsFromLiteral(String fnName, List<Expr> args)
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{
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if (!(args.get(1).isLiteral() && args.get(1).getLiteralValue() instanceof String)) {
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throw new IAE(
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"Function[%s] second argument [%s] must be a literal [%s] value",
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fnName,
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args.get(1).stringify(),
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arg.stringify(),
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ExpressionType.STRING
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);
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}
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final List<NestedPathPart> parts = NestedPathFinder.parseJsonPath(
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(String) args.get(1).getLiteralValue()
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(String) arg.getLiteralValue()
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);
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return parts;
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}
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|
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@ -24,6 +24,7 @@ import com.fasterxml.jackson.databind.ObjectMapper;
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import com.google.common.base.Supplier;
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import com.google.common.collect.ImmutableList;
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import com.google.common.collect.ImmutableMap;
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import org.apache.druid.common.config.NullHandling;
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import org.apache.druid.jackson.DefaultObjectMapper;
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import org.apache.druid.java.util.common.IAE;
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import org.apache.druid.java.util.common.Pair;
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@ -45,10 +46,6 @@ public class NestedDataExpressionsTest extends InitializedNullHandlingTest
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private static final ObjectMapper JSON_MAPPER = new DefaultObjectMapper();
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private static final ExprMacroTable MACRO_TABLE = new ExprMacroTable(
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ImmutableList.of(
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new NestedDataExpressions.StructExprMacro(),
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new NestedDataExpressions.GetPathExprMacro(),
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new NestedDataExpressions.ListKeysExprMacro(),
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new NestedDataExpressions.ListPathsExprMacro(),
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new NestedDataExpressions.JsonPathsExprMacro(),
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new NestedDataExpressions.JsonKeysExprMacro(),
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new NestedDataExpressions.JsonObjectExprMacro(),
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@ -84,20 +81,6 @@ public class NestedDataExpressionsTest extends InitializedNullHandlingTest
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.build()
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);
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@Test
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public void testStructExpression()
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{
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Expr expr = Parser.parse("struct('x',100,'y',200,'z',300)", MACRO_TABLE);
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ExprEval eval = expr.eval(inputBindings);
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Assert.assertEquals(NEST, eval.value());
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expr = Parser.parse("struct('x',array('a','b','c'),'y',struct('a','hello','b','world'))", MACRO_TABLE);
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eval = expr.eval(inputBindings);
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// decompose because of array equals
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Assert.assertArrayEquals(new Object[]{"a", "b", "c"}, (Object[]) ((Map) eval.value()).get("x"));
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Assert.assertEquals(ImmutableMap.of("a", "hello", "b", "world"), ((Map) eval.value()).get("y"));
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}
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||||
|
||||
@Test
|
||||
public void testJsonObjectExpression()
|
||||
{
|
||||
|
|
@ -112,73 +95,30 @@ public class NestedDataExpressionsTest extends InitializedNullHandlingTest
|
|||
Assert.assertEquals(ImmutableMap.of("a", "hello", "b", "world"), ((Map) eval.value()).get("y"));
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testListKeysExpression()
|
||||
{
|
||||
Expr expr = Parser.parse("list_keys(nest, '.')", MACRO_TABLE);
|
||||
ExprEval eval = expr.eval(inputBindings);
|
||||
Assert.assertEquals(ExpressionType.STRING_ARRAY, eval.type());
|
||||
Assert.assertArrayEquals(new Object[]{"x", "y", "z"}, (Object[]) eval.value());
|
||||
|
||||
|
||||
expr = Parser.parse("list_keys(nester, '.x')", MACRO_TABLE);
|
||||
eval = expr.eval(inputBindings);
|
||||
Assert.assertEquals(ExpressionType.STRING_ARRAY, eval.type());
|
||||
Assert.assertArrayEquals(new Object[]{"0", "1", "2"}, (Object[]) eval.value());
|
||||
|
||||
expr = Parser.parse("list_keys(nester, '.y')", MACRO_TABLE);
|
||||
eval = expr.eval(inputBindings);
|
||||
Assert.assertEquals(ExpressionType.STRING_ARRAY, eval.type());
|
||||
Assert.assertArrayEquals(new Object[]{"a", "b"}, (Object[]) eval.value());
|
||||
|
||||
expr = Parser.parse("list_keys(nester, '.x.a')", MACRO_TABLE);
|
||||
eval = expr.eval(inputBindings);
|
||||
Assert.assertNull(eval.value());
|
||||
|
||||
expr = Parser.parse("list_keys(nester, '.x.a.b')", MACRO_TABLE);
|
||||
eval = expr.eval(inputBindings);
|
||||
Assert.assertNull(eval.value());
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testListPathsExpression()
|
||||
{
|
||||
Expr expr = Parser.parse("list_paths(nest)", MACRO_TABLE);
|
||||
ExprEval eval = expr.eval(inputBindings);
|
||||
Assert.assertEquals(ExpressionType.STRING_ARRAY, eval.type());
|
||||
Assert.assertArrayEquals(new Object[]{".\"y\"", ".\"z\"", ".\"x\""}, (Object[]) eval.value());
|
||||
|
||||
expr = Parser.parse("list_paths(nester)", MACRO_TABLE);
|
||||
eval = expr.eval(inputBindings);
|
||||
Assert.assertEquals(ExpressionType.STRING_ARRAY, eval.type());
|
||||
Assert.assertArrayEquals(new Object[]{".\"x\"[0]", ".\"x\"[1]", ".\"x\"[2]", ".\"y\".\"b\"", ".\"y\".\"a\""}, (Object[]) eval.value());
|
||||
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testJsonKeysExpression()
|
||||
{
|
||||
Expr expr = Parser.parse("json_keys(nest, '.')", MACRO_TABLE);
|
||||
Expr expr = Parser.parse("json_keys(nest, '$.')", MACRO_TABLE);
|
||||
ExprEval eval = expr.eval(inputBindings);
|
||||
Assert.assertEquals(ExpressionType.STRING_ARRAY, eval.type());
|
||||
Assert.assertArrayEquals(new Object[]{"x", "y", "z"}, (Object[]) eval.value());
|
||||
|
||||
|
||||
expr = Parser.parse("json_keys(nester, '.x')", MACRO_TABLE);
|
||||
expr = Parser.parse("json_keys(nester, '$.x')", MACRO_TABLE);
|
||||
eval = expr.eval(inputBindings);
|
||||
Assert.assertEquals(ExpressionType.STRING_ARRAY, eval.type());
|
||||
Assert.assertArrayEquals(new Object[]{"0", "1", "2"}, (Object[]) eval.value());
|
||||
|
||||
expr = Parser.parse("json_keys(nester, '.y')", MACRO_TABLE);
|
||||
expr = Parser.parse("json_keys(nester, '$.y')", MACRO_TABLE);
|
||||
eval = expr.eval(inputBindings);
|
||||
Assert.assertEquals(ExpressionType.STRING_ARRAY, eval.type());
|
||||
Assert.assertArrayEquals(new Object[]{"a", "b"}, (Object[]) eval.value());
|
||||
|
||||
expr = Parser.parse("json_keys(nester, '.x.a')", MACRO_TABLE);
|
||||
expr = Parser.parse("json_keys(nester, '$.x.a')", MACRO_TABLE);
|
||||
eval = expr.eval(inputBindings);
|
||||
Assert.assertNull(eval.value());
|
||||
|
||||
expr = Parser.parse("json_keys(nester, '.x.a.b')", MACRO_TABLE);
|
||||
expr = Parser.parse("json_keys(nester, '$.x.a.b')", MACRO_TABLE);
|
||||
eval = expr.eval(inputBindings);
|
||||
Assert.assertNull(eval.value());
|
||||
}
|
||||
|
|
@ -197,45 +137,6 @@ public class NestedDataExpressionsTest extends InitializedNullHandlingTest
|
|||
Assert.assertArrayEquals(new Object[]{"$.x[0]", "$.x[1]", "$.x[2]", "$.y.b", "$.y.a"}, (Object[]) eval.value());
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testGetPathExpression()
|
||||
{
|
||||
Expr expr = Parser.parse("get_path(nest, '.x')", MACRO_TABLE);
|
||||
ExprEval eval = expr.eval(inputBindings);
|
||||
Assert.assertEquals(100L, eval.value());
|
||||
Assert.assertEquals(ExpressionType.LONG, eval.type());
|
||||
|
||||
expr = Parser.parse("get_path(nester, '.x')", MACRO_TABLE);
|
||||
eval = expr.eval(inputBindings);
|
||||
Assert.assertNull(eval.value());
|
||||
|
||||
expr = Parser.parse("get_path(nester, '.x[1]')", MACRO_TABLE);
|
||||
eval = expr.eval(inputBindings);
|
||||
Assert.assertEquals("b", eval.value());
|
||||
Assert.assertEquals(ExpressionType.STRING, eval.type());
|
||||
|
||||
expr = Parser.parse("get_path(nester, '.x[23]')", MACRO_TABLE);
|
||||
eval = expr.eval(inputBindings);
|
||||
Assert.assertNull(eval.value());
|
||||
|
||||
expr = Parser.parse("get_path(nester, '.x[1].b')", MACRO_TABLE);
|
||||
eval = expr.eval(inputBindings);
|
||||
Assert.assertNull(eval.value());
|
||||
|
||||
expr = Parser.parse("get_path(nester, '.y[1]')", MACRO_TABLE);
|
||||
eval = expr.eval(inputBindings);
|
||||
Assert.assertNull(eval.value());
|
||||
|
||||
expr = Parser.parse("get_path(nester, '.y.a')", MACRO_TABLE);
|
||||
eval = expr.eval(inputBindings);
|
||||
Assert.assertEquals("hello", eval.value());
|
||||
Assert.assertEquals(ExpressionType.STRING, eval.type());
|
||||
|
||||
expr = Parser.parse("get_path(nester, '.y.a.b.c[12]')", MACRO_TABLE);
|
||||
eval = expr.eval(inputBindings);
|
||||
Assert.assertNull(eval.value());
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testJsonValueExpression()
|
||||
{
|
||||
|
|
@ -270,6 +171,11 @@ public class NestedDataExpressionsTest extends InitializedNullHandlingTest
|
|||
Assert.assertEquals("hello", eval.value());
|
||||
Assert.assertEquals(ExpressionType.STRING, eval.type());
|
||||
|
||||
expr = Parser.parse("json_value(nester, '$.y.a', 'LONG')", MACRO_TABLE);
|
||||
eval = expr.eval(inputBindings);
|
||||
Assert.assertEquals(NullHandling.defaultLongValue(), eval.value());
|
||||
Assert.assertEquals(ExpressionType.LONG, eval.type());
|
||||
|
||||
expr = Parser.parse("json_value(nester, '$.y.a.b.c[12]')", MACRO_TABLE);
|
||||
eval = expr.eval(inputBindings);
|
||||
Assert.assertNull(eval.value());
|
||||
|
|
@ -278,6 +184,26 @@ public class NestedDataExpressionsTest extends InitializedNullHandlingTest
|
|||
eval = expr.eval(inputBindings);
|
||||
Assert.assertEquals(1234L, eval.value());
|
||||
Assert.assertEquals(ExpressionType.LONG, eval.type());
|
||||
|
||||
expr = Parser.parse("json_value(long, '$', 'STRING')", MACRO_TABLE);
|
||||
eval = expr.eval(inputBindings);
|
||||
Assert.assertEquals("1234", eval.value());
|
||||
Assert.assertEquals(ExpressionType.STRING, eval.type());
|
||||
|
||||
expr = Parser.parse("json_value(nest, '$.x')", MACRO_TABLE);
|
||||
eval = expr.eval(inputBindings);
|
||||
Assert.assertEquals(100L, eval.value());
|
||||
Assert.assertEquals(ExpressionType.LONG, eval.type());
|
||||
|
||||
expr = Parser.parse("json_value(nest, '$.x', 'DOUBLE')", MACRO_TABLE);
|
||||
eval = expr.eval(inputBindings);
|
||||
Assert.assertEquals(100.0, eval.value());
|
||||
Assert.assertEquals(ExpressionType.DOUBLE, eval.type());
|
||||
|
||||
expr = Parser.parse("json_value(nest, '$.x', 'STRING')", MACRO_TABLE);
|
||||
eval = expr.eval(inputBindings);
|
||||
Assert.assertEquals("100", eval.value());
|
||||
Assert.assertEquals(ExpressionType.STRING, eval.type());
|
||||
}
|
||||
|
||||
@Test
|
||||
|
|
|
|||
|
|
@ -56,8 +56,6 @@ public class TestExprMacroTable extends ExprMacroTable
|
|||
new HyperUniqueExpressions.HllEstimateExprMacro(),
|
||||
new HyperUniqueExpressions.HllRoundEstimateExprMacro(),
|
||||
new NestedDataExpressions.JsonObjectExprMacro(),
|
||||
new NestedDataExpressions.ListKeysExprMacro(),
|
||||
new NestedDataExpressions.ListPathsExprMacro(),
|
||||
new NestedDataExpressions.JsonKeysExprMacro(),
|
||||
new NestedDataExpressions.JsonPathsExprMacro(),
|
||||
new NestedDataExpressions.JsonValueExprMacro(),
|
||||
|
|
|
|||
|
|
@ -70,11 +70,7 @@ public class ExpressionModule implements Module
|
|||
.add(HyperUniqueExpressions.HllAddExprMacro.class)
|
||||
.add(HyperUniqueExpressions.HllEstimateExprMacro.class)
|
||||
.add(HyperUniqueExpressions.HllRoundEstimateExprMacro.class)
|
||||
.add(NestedDataExpressions.StructExprMacro.class)
|
||||
.add(NestedDataExpressions.JsonObjectExprMacro.class)
|
||||
.add(NestedDataExpressions.GetPathExprMacro.class)
|
||||
.add(NestedDataExpressions.ListKeysExprMacro.class)
|
||||
.add(NestedDataExpressions.ListPathsExprMacro.class)
|
||||
.add(NestedDataExpressions.JsonKeysExprMacro.class)
|
||||
.add(NestedDataExpressions.JsonPathsExprMacro.class)
|
||||
.add(NestedDataExpressions.JsonValueExprMacro.class)
|
||||
|
|
|
|||
|
|
@ -19,19 +19,27 @@
|
|||
|
||||
package org.apache.druid.sql.calcite.expression.builtin;
|
||||
|
||||
import com.google.common.base.Preconditions;
|
||||
import com.google.common.collect.ImmutableList;
|
||||
import org.apache.calcite.rel.type.RelDataType;
|
||||
import org.apache.calcite.rel.type.RelDataTypeFactory;
|
||||
import org.apache.calcite.rex.RexCall;
|
||||
import org.apache.calcite.rex.RexNode;
|
||||
import org.apache.calcite.sql.SqlDataTypeSpec;
|
||||
import org.apache.calcite.sql.SqlFunction;
|
||||
import org.apache.calcite.sql.SqlFunctionCategory;
|
||||
import org.apache.calcite.sql.SqlNode;
|
||||
import org.apache.calcite.sql.SqlOperator;
|
||||
import org.apache.calcite.sql.fun.SqlStdOperatorTable;
|
||||
import org.apache.calcite.sql.parser.SqlParserPos;
|
||||
import org.apache.calcite.sql.type.OperandTypes;
|
||||
import org.apache.calcite.sql.type.ReturnTypes;
|
||||
import org.apache.calcite.sql.type.SqlOperandCountRanges;
|
||||
import org.apache.calcite.sql.type.SqlReturnTypeInference;
|
||||
import org.apache.calcite.sql.type.SqlTypeFamily;
|
||||
import org.apache.calcite.sql.type.SqlTypeName;
|
||||
import org.apache.calcite.sql.type.SqlTypeTransforms;
|
||||
import org.apache.calcite.sql2rel.SqlRexConvertlet;
|
||||
import org.apache.druid.java.util.common.StringUtils;
|
||||
import org.apache.druid.math.expr.Expr;
|
||||
import org.apache.druid.math.expr.InputBindings;
|
||||
|
|
@ -42,123 +50,30 @@ import org.apache.druid.segment.nested.NestedDataComplexTypeSerde;
|
|||
import org.apache.druid.segment.nested.NestedPathFinder;
|
||||
import org.apache.druid.segment.nested.NestedPathPart;
|
||||
import org.apache.druid.segment.virtual.NestedFieldVirtualColumn;
|
||||
import org.apache.druid.sql.calcite.expression.AliasedOperatorConversion;
|
||||
import org.apache.druid.sql.calcite.expression.DruidExpression;
|
||||
import org.apache.druid.sql.calcite.expression.Expressions;
|
||||
import org.apache.druid.sql.calcite.expression.OperatorConversions;
|
||||
import org.apache.druid.sql.calcite.expression.SqlOperatorConversion;
|
||||
import org.apache.druid.sql.calcite.planner.Calcites;
|
||||
import org.apache.druid.sql.calcite.planner.PlannerContext;
|
||||
import org.apache.druid.sql.calcite.planner.UnsupportedSQLQueryException;
|
||||
import org.apache.druid.sql.calcite.planner.convertlet.DruidConvertletFactory;
|
||||
import org.apache.druid.sql.calcite.table.RowSignatures;
|
||||
|
||||
import javax.annotation.Nullable;
|
||||
import java.util.Collections;
|
||||
import java.util.List;
|
||||
|
||||
public class NestedDataOperatorConversions
|
||||
{
|
||||
public static final DruidJsonValueConvertletFactory DRUID_JSON_VALUE_CONVERTLET_FACTORY_INSTANCE =
|
||||
new DruidJsonValueConvertletFactory();
|
||||
|
||||
public static final SqlReturnTypeInference NESTED_RETURN_TYPE_INFERENCE = opBinding -> RowSignatures.makeComplexType(
|
||||
opBinding.getTypeFactory(),
|
||||
NestedDataComplexTypeSerde.TYPE,
|
||||
true
|
||||
);
|
||||
|
||||
public static class GetPathOperatorConversion implements SqlOperatorConversion
|
||||
{
|
||||
private static final String FUNCTION_NAME = StringUtils.toUpperCase("get_path");
|
||||
private static final SqlFunction SQL_FUNCTION = OperatorConversions
|
||||
.operatorBuilder(FUNCTION_NAME)
|
||||
.operandTypeChecker(
|
||||
OperandTypes.sequence(
|
||||
"(expr,path)",
|
||||
OperandTypes.family(SqlTypeFamily.ANY),
|
||||
OperandTypes.family(SqlTypeFamily.STRING)
|
||||
)
|
||||
)
|
||||
.returnTypeCascadeNullable(SqlTypeName.VARCHAR)
|
||||
.functionCategory(SqlFunctionCategory.USER_DEFINED_FUNCTION)
|
||||
.build();
|
||||
|
||||
@Override
|
||||
public SqlOperator calciteOperator()
|
||||
{
|
||||
return SQL_FUNCTION;
|
||||
}
|
||||
|
||||
@Nullable
|
||||
@Override
|
||||
public DruidExpression toDruidExpression(
|
||||
PlannerContext plannerContext,
|
||||
RowSignature rowSignature,
|
||||
RexNode rexNode
|
||||
)
|
||||
{
|
||||
final RexCall call = (RexCall) rexNode;
|
||||
|
||||
final List<DruidExpression> druidExpressions = Expressions.toDruidExpressions(
|
||||
plannerContext,
|
||||
rowSignature,
|
||||
call.getOperands()
|
||||
);
|
||||
|
||||
if (druidExpressions == null || druidExpressions.size() != 2) {
|
||||
return null;
|
||||
}
|
||||
|
||||
final Expr pathExpr = Parser.parse(druidExpressions.get(1).getExpression(), plannerContext.getExprMacroTable());
|
||||
if (!pathExpr.isLiteral()) {
|
||||
return null;
|
||||
}
|
||||
// pre-normalize path so that the same expressions with different jq syntax are collapsed
|
||||
final String path = (String) pathExpr.eval(InputBindings.nilBindings()).value();
|
||||
final List<NestedPathPart> parts;
|
||||
try {
|
||||
parts = NestedPathFinder.parseJqPath(path);
|
||||
}
|
||||
catch (IllegalArgumentException iae) {
|
||||
throw new UnsupportedSQLQueryException(
|
||||
"Cannot use [%s]: [%s]",
|
||||
call.getOperator().getName(),
|
||||
iae.getMessage()
|
||||
);
|
||||
}
|
||||
final String normalized = NestedPathFinder.toNormalizedJqPath(parts);
|
||||
|
||||
if (druidExpressions.get(0).isSimpleExtraction()) {
|
||||
|
||||
return DruidExpression.ofVirtualColumn(
|
||||
Calcites.getColumnTypeForRelDataType(call.getType()),
|
||||
(args) -> "get_path(" + args.get(0).getExpression() + ",'" + normalized + "')",
|
||||
ImmutableList.of(
|
||||
DruidExpression.ofColumn(NestedDataComplexTypeSerde.TYPE, druidExpressions.get(0).getDirectColumn())
|
||||
),
|
||||
(name, outputType, expression, macroTable) -> new NestedFieldVirtualColumn(
|
||||
druidExpressions.get(0).getDirectColumn(),
|
||||
name,
|
||||
outputType,
|
||||
parts,
|
||||
false,
|
||||
null,
|
||||
null
|
||||
)
|
||||
);
|
||||
}
|
||||
throw new UnsupportedSQLQueryException(
|
||||
"Cannot use [%s] on expression input: [%s]",
|
||||
call.getOperator().getName(),
|
||||
druidExpressions.get(0).getExpression()
|
||||
);
|
||||
}
|
||||
}
|
||||
|
||||
public static class JsonGetPathAliasOperatorConversion extends AliasedOperatorConversion
|
||||
{
|
||||
public JsonGetPathAliasOperatorConversion()
|
||||
{
|
||||
super(new GetPathOperatorConversion(), StringUtils.toUpperCase("json_get_path"));
|
||||
}
|
||||
}
|
||||
|
||||
public static class JsonPathsOperatorConversion implements SqlOperatorConversion
|
||||
{
|
||||
private static final SqlFunction SQL_FUNCTION = OperatorConversions
|
||||
|
|
@ -316,12 +231,266 @@ public class NestedDataOperatorConversions
|
|||
}
|
||||
}
|
||||
|
||||
public static class JsonValueOperatorConversion implements SqlOperatorConversion
|
||||
|
||||
/**
|
||||
* The {@link org.apache.calcite.sql2rel.StandardConvertletTable} converts json_value(.. RETURNING type) into
|
||||
* cast(json_value_any(..), type).
|
||||
*
|
||||
* This is not that useful for us, so we have our own convertlet, to translate into specialized operators such
|
||||
* as {@link JsonValueBigintOperatorConversion}, {@link JsonValueDoubleOperatorConversion}, or
|
||||
* {@link JsonValueVarcharOperatorConversion}, before falling back to {@link JsonValueAnyOperatorConversion}.
|
||||
*
|
||||
* This convertlet still always wraps the function in a {@link SqlStdOperatorTable#CAST}, to smooth out type
|
||||
* mismatches, such as VARCHAR(2000) vs VARCHAR or whatever else various type checkers like to complain about not
|
||||
* exactly matching.
|
||||
*/
|
||||
public static class DruidJsonValueConvertletFactory implements DruidConvertletFactory
|
||||
{
|
||||
@Override
|
||||
public SqlRexConvertlet createConvertlet(PlannerContext plannerContext)
|
||||
{
|
||||
return (cx, call) -> {
|
||||
// we don't support modifying the behavior to be anything other than 'NULL ON EMPTY' / 'NULL ON ERROR'
|
||||
Preconditions.checkArgument(
|
||||
"SQLJSONVALUEEMPTYORERRORBEHAVIOR[NULL]".equals(call.operand(2).toString()),
|
||||
"Unsupported JSON_VALUE parameter 'ON EMPTY' defined - please re-issue this query without this argument"
|
||||
);
|
||||
Preconditions.checkArgument(
|
||||
"NULL".equals(call.operand(3).toString()),
|
||||
"Unsupported JSON_VALUE parameter 'ON EMPTY' defined - please re-issue this query without this argument"
|
||||
);
|
||||
Preconditions.checkArgument(
|
||||
"SQLJSONVALUEEMPTYORERRORBEHAVIOR[NULL]".equals(call.operand(4).toString()),
|
||||
"Unsupported JSON_VALUE parameter 'ON ERROR' defined - please re-issue this query without this argument"
|
||||
);
|
||||
Preconditions.checkArgument(
|
||||
"NULL".equals(call.operand(5).toString()),
|
||||
"Unsupported JSON_VALUE parameter 'ON ERROR' defined - please re-issue this query without this argument"
|
||||
);
|
||||
SqlDataTypeSpec dataType = call.operand(6);
|
||||
RelDataType sqlType = dataType.deriveType(cx.getValidator());
|
||||
SqlNode rewrite;
|
||||
if (SqlTypeName.INT_TYPES.contains(sqlType.getSqlTypeName())) {
|
||||
rewrite = JsonValueBigintOperatorConversion.FUNCTION.createCall(
|
||||
SqlParserPos.ZERO,
|
||||
call.operand(0),
|
||||
call.operand(1)
|
||||
);
|
||||
} else if (SqlTypeName.APPROX_TYPES.contains(sqlType.getSqlTypeName())) {
|
||||
rewrite = JsonValueDoubleOperatorConversion.FUNCTION.createCall(
|
||||
SqlParserPos.ZERO,
|
||||
call.operand(0),
|
||||
call.operand(1)
|
||||
);
|
||||
} else if (SqlTypeName.STRING_TYPES.contains(sqlType.getSqlTypeName())) {
|
||||
rewrite = JsonValueVarcharOperatorConversion.FUNCTION.createCall(
|
||||
SqlParserPos.ZERO,
|
||||
call.operand(0),
|
||||
call.operand(1)
|
||||
);
|
||||
} else {
|
||||
// fallback to json_value_any, e.g. the 'standard' convertlet.
|
||||
rewrite = JsonValueAnyOperatorConversion.FUNCTION.createCall(
|
||||
SqlParserPos.ZERO,
|
||||
call.operand(0),
|
||||
call.operand(1)
|
||||
);
|
||||
}
|
||||
|
||||
// always cast anyway, to prevent haters from complaining that VARCHAR doesn't match VARCHAR(2000)
|
||||
SqlNode caster = SqlStdOperatorTable.CAST.createCall(
|
||||
SqlParserPos.ZERO,
|
||||
rewrite,
|
||||
call.operand(6)
|
||||
);
|
||||
return cx.convertExpression(caster);
|
||||
};
|
||||
}
|
||||
|
||||
@Override
|
||||
public List<SqlOperator> operators()
|
||||
{
|
||||
return Collections.singletonList(SqlStdOperatorTable.JSON_VALUE);
|
||||
}
|
||||
}
|
||||
|
||||
public abstract static class JsonValueReturningTypeOperatorConversion implements SqlOperatorConversion
|
||||
{
|
||||
private final SqlFunction function;
|
||||
private final ColumnType druidType;
|
||||
|
||||
public JsonValueReturningTypeOperatorConversion(SqlFunction function, ColumnType druidType)
|
||||
{
|
||||
this.druidType = druidType;
|
||||
this.function = function;
|
||||
}
|
||||
|
||||
@Override
|
||||
public SqlOperator calciteOperator()
|
||||
{
|
||||
return SqlStdOperatorTable.JSON_VALUE;
|
||||
return function;
|
||||
}
|
||||
|
||||
@Nullable
|
||||
@Override
|
||||
public DruidExpression toDruidExpression(
|
||||
PlannerContext plannerContext,
|
||||
RowSignature rowSignature,
|
||||
RexNode rexNode
|
||||
)
|
||||
{
|
||||
final RexCall call = (RexCall) rexNode;
|
||||
final List<DruidExpression> druidExpressions = Expressions.toDruidExpressions(
|
||||
plannerContext,
|
||||
rowSignature,
|
||||
call.getOperands()
|
||||
);
|
||||
|
||||
if (druidExpressions == null || druidExpressions.size() != 2) {
|
||||
return null;
|
||||
}
|
||||
|
||||
final Expr pathExpr = Parser.parse(druidExpressions.get(1).getExpression(), plannerContext.getExprMacroTable());
|
||||
if (!pathExpr.isLiteral()) {
|
||||
return null;
|
||||
}
|
||||
// pre-normalize path so that the same expressions with different jq syntax are collapsed
|
||||
final String path = (String) pathExpr.eval(InputBindings.nilBindings()).value();
|
||||
final List<NestedPathPart> parts;
|
||||
try {
|
||||
parts = NestedPathFinder.parseJsonPath(path);
|
||||
}
|
||||
catch (IllegalArgumentException iae) {
|
||||
throw new UnsupportedSQLQueryException(
|
||||
"Cannot use [%s]: [%s]",
|
||||
call.getOperator().getName(),
|
||||
iae.getMessage()
|
||||
);
|
||||
}
|
||||
final String jsonPath = NestedPathFinder.toNormalizedJsonPath(parts);
|
||||
final DruidExpression.ExpressionGenerator builder = (args) ->
|
||||
"json_value(" + args.get(0).getExpression() + ",'" + jsonPath + "', '" + druidType.asTypeString() + "')";
|
||||
|
||||
if (druidExpressions.get(0).isSimpleExtraction()) {
|
||||
|
||||
return DruidExpression.ofVirtualColumn(
|
||||
druidType,
|
||||
builder,
|
||||
ImmutableList.of(
|
||||
DruidExpression.ofColumn(NestedDataComplexTypeSerde.TYPE, druidExpressions.get(0).getDirectColumn())
|
||||
),
|
||||
(name, outputType, expression, macroTable) -> new NestedFieldVirtualColumn(
|
||||
druidExpressions.get(0).getDirectColumn(),
|
||||
name,
|
||||
outputType,
|
||||
parts,
|
||||
false,
|
||||
null,
|
||||
null
|
||||
)
|
||||
);
|
||||
}
|
||||
return DruidExpression.ofExpression(druidType, builder, druidExpressions);
|
||||
}
|
||||
|
||||
static SqlFunction buildFunction(String functionName, SqlTypeName typeName)
|
||||
{
|
||||
return OperatorConversions.operatorBuilder(functionName)
|
||||
.operandTypeChecker(
|
||||
OperandTypes.sequence(
|
||||
"(expr,path)",
|
||||
OperandTypes.family(SqlTypeFamily.ANY),
|
||||
OperandTypes.family(SqlTypeFamily.STRING)
|
||||
)
|
||||
)
|
||||
.returnTypeInference(
|
||||
ReturnTypes.cascade(
|
||||
opBinding -> opBinding.getTypeFactory().createSqlType(typeName),
|
||||
SqlTypeTransforms.FORCE_NULLABLE
|
||||
)
|
||||
)
|
||||
.functionCategory(SqlFunctionCategory.USER_DEFINED_FUNCTION)
|
||||
.build();
|
||||
}
|
||||
}
|
||||
|
||||
public static class JsonValueBigintOperatorConversion extends JsonValueReturningTypeOperatorConversion
|
||||
{
|
||||
private static final SqlFunction FUNCTION = buildFunction("JSON_VALUE_BIGINT", SqlTypeName.BIGINT);
|
||||
|
||||
public JsonValueBigintOperatorConversion()
|
||||
{
|
||||
super(FUNCTION, ColumnType.LONG);
|
||||
}
|
||||
}
|
||||
|
||||
public static class JsonValueDoubleOperatorConversion extends JsonValueReturningTypeOperatorConversion
|
||||
{
|
||||
private static final SqlFunction FUNCTION = buildFunction("JSON_VALUE_DOUBLE", SqlTypeName.DOUBLE);
|
||||
|
||||
public JsonValueDoubleOperatorConversion()
|
||||
{
|
||||
super(FUNCTION, ColumnType.DOUBLE);
|
||||
}
|
||||
}
|
||||
|
||||
public static class JsonValueVarcharOperatorConversion extends JsonValueReturningTypeOperatorConversion
|
||||
{
|
||||
private static final SqlFunction FUNCTION = buildFunction("JSON_VALUE_VARCHAR", SqlTypeName.VARCHAR);
|
||||
|
||||
public JsonValueVarcharOperatorConversion()
|
||||
{
|
||||
super(FUNCTION, ColumnType.STRING);
|
||||
}
|
||||
}
|
||||
|
||||
public static class JsonValueAnyOperatorConversion implements SqlOperatorConversion
|
||||
{
|
||||
private static final SqlFunction FUNCTION =
|
||||
OperatorConversions.operatorBuilder("JSON_VALUE_ANY")
|
||||
.operandTypeChecker(
|
||||
OperandTypes.or(
|
||||
OperandTypes.sequence(
|
||||
"(expr,path)",
|
||||
OperandTypes.family(SqlTypeFamily.ANY),
|
||||
OperandTypes.family(SqlTypeFamily.STRING)
|
||||
),
|
||||
OperandTypes.family(
|
||||
SqlTypeFamily.ANY,
|
||||
SqlTypeFamily.CHARACTER,
|
||||
SqlTypeFamily.ANY,
|
||||
SqlTypeFamily.ANY,
|
||||
SqlTypeFamily.ANY,
|
||||
SqlTypeFamily.ANY,
|
||||
SqlTypeFamily.ANY
|
||||
)
|
||||
)
|
||||
)
|
||||
.operandTypeInference((callBinding, returnType, operandTypes) -> {
|
||||
RelDataTypeFactory typeFactory = callBinding.getTypeFactory();
|
||||
if (operandTypes.length > 5) {
|
||||
operandTypes[3] = typeFactory.createSqlType(SqlTypeName.ANY);
|
||||
operandTypes[5] = typeFactory.createSqlType(SqlTypeName.ANY);
|
||||
}
|
||||
})
|
||||
.returnTypeInference(
|
||||
ReturnTypes.cascade(
|
||||
opBinding -> opBinding.getTypeFactory().createTypeWithNullability(
|
||||
// STRING is the closest thing we have to an ANY type
|
||||
// however, this should really be using SqlTypeName.ANY.. someday
|
||||
opBinding.getTypeFactory().createSqlType(SqlTypeName.VARCHAR),
|
||||
true
|
||||
),
|
||||
SqlTypeTransforms.FORCE_NULLABLE
|
||||
)
|
||||
)
|
||||
.functionCategory(SqlFunctionCategory.SYSTEM)
|
||||
.build();
|
||||
|
||||
@Override
|
||||
public SqlOperator calciteOperator()
|
||||
{
|
||||
return FUNCTION;
|
||||
}
|
||||
|
||||
@Nullable
|
||||
|
|
@ -334,22 +503,17 @@ public class NestedDataOperatorConversions
|
|||
{
|
||||
final RexCall call = (RexCall) rexNode;
|
||||
|
||||
// calcite puts a bunch of junk in here so the call looks something like
|
||||
// JSON_VALUE(`nested`.`nest`, '$.x', SQLJSONVALUEEMPTYORERRORBEHAVIOR[NULL], NULL, SQLJSONVALUEEMPTYORERRORBEHAVIOR[NULL], NULL, VARCHAR(2000))
|
||||
// calcite parser can allow for a bunch of junk in here that we don't care about right now, so the call looks
|
||||
// something like this:
|
||||
// JSON_VALUE_ANY(`nested`.`nest`, '$.x', SQLJSONVALUEEMPTYORERRORBEHAVIOR[NULL], NULL, SQLJSONVALUEEMPTYORERRORBEHAVIOR[NULL], NULL)
|
||||
// by the time it gets here
|
||||
|
||||
final List<DruidExpression> druidExpressions = Expressions.toDruidExpressions(
|
||||
plannerContext,
|
||||
rowSignature,
|
||||
call.getOperands().subList(0, 2)
|
||||
call.getOperands().size() > 2 ? call.getOperands().subList(0, 2) : call.getOperands()
|
||||
);
|
||||
|
||||
ColumnType inferredOutputType = ColumnType.STRING;
|
||||
if (call.getOperands().size() == 7) {
|
||||
ColumnType maybe = Calcites.getColumnTypeForRelDataType(call.getOperands().get(6).getType());
|
||||
if (maybe != null && !ColumnType.UNKNOWN_COMPLEX.equals(maybe)) {
|
||||
inferredOutputType = maybe;
|
||||
}
|
||||
}
|
||||
|
||||
if (druidExpressions == null || druidExpressions.size() != 2) {
|
||||
return null;
|
||||
|
|
@ -376,10 +540,13 @@ public class NestedDataOperatorConversions
|
|||
final DruidExpression.ExpressionGenerator builder = (args) ->
|
||||
"json_value(" + args.get(0).getExpression() + ",'" + jsonPath + "')";
|
||||
|
||||
if (druidExpressions.get(0).isSimpleExtraction()) {
|
||||
// STRING is the closest thing we have to ANY, though maybe someday this
|
||||
// can be replaced with a VARIANT type
|
||||
final ColumnType columnType = ColumnType.STRING;
|
||||
|
||||
if (druidExpressions.get(0).isSimpleExtraction()) {
|
||||
return DruidExpression.ofVirtualColumn(
|
||||
inferredOutputType,
|
||||
columnType,
|
||||
builder,
|
||||
ImmutableList.of(
|
||||
DruidExpression.ofColumn(NestedDataComplexTypeSerde.TYPE, druidExpressions.get(0).getDirectColumn())
|
||||
|
|
@ -395,24 +562,7 @@ public class NestedDataOperatorConversions
|
|||
)
|
||||
);
|
||||
}
|
||||
return DruidExpression.ofExpression(ColumnType.STRING, builder, druidExpressions);
|
||||
}
|
||||
}
|
||||
|
||||
// calcite converts JSON_VALUE to JSON_VALUE_ANY so we have to wire that up too...
|
||||
public static class JsonValueAnyOperatorConversion extends AliasedOperatorConversion
|
||||
{
|
||||
private static final String FUNCTION_NAME = StringUtils.toUpperCase("json_value_any");
|
||||
|
||||
public JsonValueAnyOperatorConversion()
|
||||
{
|
||||
super(new JsonValueOperatorConversion(), FUNCTION_NAME);
|
||||
}
|
||||
|
||||
@Override
|
||||
public SqlOperator calciteOperator()
|
||||
{
|
||||
return SqlStdOperatorTable.JSON_VALUE_ANY;
|
||||
return DruidExpression.ofExpression(columnType, builder, druidExpressions);
|
||||
}
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -299,13 +299,13 @@ public class DruidOperatorTable implements SqlOperatorTable
|
|||
|
||||
private static final List<SqlOperatorConversion> NESTED_DATA_OPERATOR_CONVERSIONS =
|
||||
ImmutableList.<SqlOperatorConversion>builder()
|
||||
.add(new NestedDataOperatorConversions.GetPathOperatorConversion())
|
||||
.add(new NestedDataOperatorConversions.JsonGetPathAliasOperatorConversion())
|
||||
.add(new NestedDataOperatorConversions.JsonKeysOperatorConversion())
|
||||
.add(new NestedDataOperatorConversions.JsonPathsOperatorConversion())
|
||||
.add(new NestedDataOperatorConversions.JsonQueryOperatorConversion())
|
||||
.add(new NestedDataOperatorConversions.JsonValueOperatorConversion())
|
||||
.add(new NestedDataOperatorConversions.JsonValueAnyOperatorConversion())
|
||||
.add(new NestedDataOperatorConversions.JsonValueBigintOperatorConversion())
|
||||
.add(new NestedDataOperatorConversions.JsonValueDoubleOperatorConversion())
|
||||
.add(new NestedDataOperatorConversions.JsonValueVarcharOperatorConversion())
|
||||
.add(new NestedDataOperatorConversions.JsonObjectOperatorConversion())
|
||||
.add(new NestedDataOperatorConversions.ToJsonStringOperatorConversion())
|
||||
.add(new NestedDataOperatorConversions.ParseJsonOperatorConversion())
|
||||
|
|
|
|||
|
|
@ -28,6 +28,7 @@ import org.apache.calcite.sql.fun.SqlStdOperatorTable;
|
|||
import org.apache.calcite.sql2rel.SqlRexConvertlet;
|
||||
import org.apache.calcite.sql2rel.SqlRexConvertletTable;
|
||||
import org.apache.calcite.sql2rel.StandardConvertletTable;
|
||||
import org.apache.druid.sql.calcite.expression.builtin.NestedDataOperatorConversions;
|
||||
import org.apache.druid.sql.calcite.planner.PlannerContext;
|
||||
|
||||
import java.util.ArrayList;
|
||||
|
|
@ -44,6 +45,7 @@ public class DruidConvertletTable implements SqlRexConvertletTable
|
|||
ImmutableList.<DruidConvertletFactory>builder()
|
||||
.add(CurrentTimestampAndFriendsConvertletFactory.INSTANCE)
|
||||
.add(TimeInIntervalConvertletFactory.INSTANCE)
|
||||
.add(NestedDataOperatorConversions.DRUID_JSON_VALUE_CONVERTLET_FACTORY_INSTANCE)
|
||||
.build();
|
||||
|
||||
// Operators we don't have standard conversions for, but which can be converted into ones that do by
|
||||
|
|
|
|||
|
|
@ -239,6 +239,43 @@ public class CalciteNestedDataQueryTest extends BaseCalciteQueryTest
|
|||
);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testGroupJsonValueAny()
|
||||
{
|
||||
testQuery(
|
||||
"SELECT "
|
||||
+ "JSON_VALUE_ANY(nest, '$.x'), "
|
||||
+ "SUM(cnt) "
|
||||
+ "FROM druid.nested GROUP BY 1",
|
||||
ImmutableList.of(
|
||||
GroupByQuery.builder()
|
||||
.setDataSource(DATA_SOURCE)
|
||||
.setInterval(querySegmentSpec(Filtration.eternity()))
|
||||
.setGranularity(Granularities.ALL)
|
||||
.setVirtualColumns(
|
||||
new NestedFieldVirtualColumn("nest", "$.x", "v0", ColumnType.STRING)
|
||||
)
|
||||
.setDimensions(
|
||||
dimensions(
|
||||
new DefaultDimensionSpec("v0", "d0")
|
||||
)
|
||||
)
|
||||
.setAggregatorSpecs(aggregators(new LongSumAggregatorFactory("a0", "cnt")))
|
||||
.setContext(QUERY_CONTEXT_DEFAULT)
|
||||
.build()
|
||||
),
|
||||
ImmutableList.of(
|
||||
new Object[]{NullHandling.defaultStringValue(), 4L},
|
||||
new Object[]{"100", 2L},
|
||||
new Object[]{"200", 1L}
|
||||
),
|
||||
RowSignature.builder()
|
||||
.add("EXPR$0", ColumnType.STRING)
|
||||
.add("EXPR$1", ColumnType.LONG)
|
||||
.build()
|
||||
);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testGroupByJsonValue()
|
||||
{
|
||||
|
|
@ -350,102 +387,6 @@ public class CalciteNestedDataQueryTest extends BaseCalciteQueryTest
|
|||
);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testGroupByGetPaths()
|
||||
{
|
||||
testQuery(
|
||||
"SELECT "
|
||||
+ "GET_PATH(nest, '.x'), "
|
||||
+ "GET_PATH(nest, '.\"x\"'), "
|
||||
+ "GET_PATH(nest, '.[\"x\"]'), "
|
||||
+ "SUM(cnt) "
|
||||
+ "FROM druid.nested GROUP BY 1, 2, 3",
|
||||
ImmutableList.of(
|
||||
GroupByQuery.builder()
|
||||
.setDataSource(DATA_SOURCE)
|
||||
.setInterval(querySegmentSpec(Filtration.eternity()))
|
||||
.setGranularity(Granularities.ALL)
|
||||
.setVirtualColumns(
|
||||
new NestedFieldVirtualColumn("nest", "$.x", "v0", ColumnType.STRING)
|
||||
)
|
||||
.setDimensions(
|
||||
dimensions(
|
||||
new DefaultDimensionSpec("v0", "d0"),
|
||||
new DefaultDimensionSpec("v0", "d1"),
|
||||
new DefaultDimensionSpec("v0", "d2")
|
||||
)
|
||||
)
|
||||
.setAggregatorSpecs(aggregators(new LongSumAggregatorFactory("a0", "cnt")))
|
||||
.setContext(QUERY_CONTEXT_DEFAULT)
|
||||
.build()
|
||||
),
|
||||
ImmutableList.of(
|
||||
new Object[]{
|
||||
NullHandling.defaultStringValue(),
|
||||
NullHandling.defaultStringValue(),
|
||||
NullHandling.defaultStringValue(),
|
||||
4L
|
||||
},
|
||||
new Object[]{"100", "100", "100", 2L},
|
||||
new Object[]{"200", "200", "200", 1L}
|
||||
),
|
||||
RowSignature.builder()
|
||||
.add("EXPR$0", ColumnType.STRING)
|
||||
.add("EXPR$1", ColumnType.STRING)
|
||||
.add("EXPR$2", ColumnType.STRING)
|
||||
.add("EXPR$3", ColumnType.LONG)
|
||||
.build()
|
||||
);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testGroupByJsonGetPaths()
|
||||
{
|
||||
testQuery(
|
||||
"SELECT "
|
||||
+ "JSON_GET_PATH(nest, '.x'), "
|
||||
+ "JSON_GET_PATH(nest, '.\"x\"'), "
|
||||
+ "JSON_GET_PATH(nest, '.[\"x\"]'), "
|
||||
+ "SUM(cnt) "
|
||||
+ "FROM druid.nested GROUP BY 1, 2, 3",
|
||||
ImmutableList.of(
|
||||
GroupByQuery.builder()
|
||||
.setDataSource(DATA_SOURCE)
|
||||
.setInterval(querySegmentSpec(Filtration.eternity()))
|
||||
.setGranularity(Granularities.ALL)
|
||||
.setVirtualColumns(
|
||||
new NestedFieldVirtualColumn("nest", "$.x", "v0", ColumnType.STRING)
|
||||
)
|
||||
.setDimensions(
|
||||
dimensions(
|
||||
new DefaultDimensionSpec("v0", "d0"),
|
||||
new DefaultDimensionSpec("v0", "d1"),
|
||||
new DefaultDimensionSpec("v0", "d2")
|
||||
)
|
||||
)
|
||||
.setAggregatorSpecs(aggregators(new LongSumAggregatorFactory("a0", "cnt")))
|
||||
.setContext(QUERY_CONTEXT_DEFAULT)
|
||||
.build()
|
||||
),
|
||||
ImmutableList.of(
|
||||
new Object[]{
|
||||
NullHandling.defaultStringValue(),
|
||||
NullHandling.defaultStringValue(),
|
||||
NullHandling.defaultStringValue(),
|
||||
4L
|
||||
},
|
||||
new Object[]{"100", "100", "100", 2L},
|
||||
new Object[]{"200", "200", "200", 1L}
|
||||
),
|
||||
RowSignature.builder()
|
||||
.add("EXPR$0", ColumnType.STRING)
|
||||
.add("EXPR$1", ColumnType.STRING)
|
||||
.add("EXPR$2", ColumnType.STRING)
|
||||
.add("EXPR$3", ColumnType.LONG)
|
||||
.build()
|
||||
);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testGroupByJsonValues()
|
||||
{
|
||||
|
|
@ -2010,6 +1951,57 @@ public class CalciteNestedDataQueryTest extends BaseCalciteQueryTest
|
|||
);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testReturningAndSumPathDouble()
|
||||
{
|
||||
testQuery(
|
||||
"SELECT "
|
||||
+ "SUM(JSON_VALUE(nest, '$.x' RETURNING DOUBLE)) "
|
||||
+ "FROM druid.nested",
|
||||
ImmutableList.of(
|
||||
Druids.newTimeseriesQueryBuilder()
|
||||
.dataSource(DATA_SOURCE)
|
||||
.intervals(querySegmentSpec(Filtration.eternity()))
|
||||
.granularity(Granularities.ALL)
|
||||
.virtualColumns(new NestedFieldVirtualColumn("nest", "$.x", "v0", ColumnType.DOUBLE))
|
||||
.aggregators(aggregators(new DoubleSumAggregatorFactory("a0", "v0")))
|
||||
.context(QUERY_CONTEXT_DEFAULT)
|
||||
.build()
|
||||
),
|
||||
ImmutableList.of(
|
||||
new Object[]{400.0}
|
||||
),
|
||||
RowSignature.builder()
|
||||
.add("EXPR$0", ColumnType.DOUBLE)
|
||||
.build()
|
||||
);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testReturningAndSumPathDecimal()
|
||||
{
|
||||
testQuery(
|
||||
"SELECT "
|
||||
+ "SUM(JSON_VALUE(nest, '$.x' RETURNING DECIMAL)) "
|
||||
+ "FROM druid.nested",
|
||||
ImmutableList.of(
|
||||
Druids.newTimeseriesQueryBuilder()
|
||||
.dataSource(DATA_SOURCE)
|
||||
.intervals(querySegmentSpec(Filtration.eternity()))
|
||||
.granularity(Granularities.ALL)
|
||||
.virtualColumns(new NestedFieldVirtualColumn("nest", "$.x", "v0", ColumnType.DOUBLE))
|
||||
.aggregators(aggregators(new DoubleSumAggregatorFactory("a0", "v0")))
|
||||
.context(QUERY_CONTEXT_DEFAULT)
|
||||
.build()
|
||||
),
|
||||
ImmutableList.of(
|
||||
new Object[]{400.0}
|
||||
),
|
||||
RowSignature.builder()
|
||||
.add("EXPR$0", ColumnType.DOUBLE)
|
||||
.build()
|
||||
);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testReturningAndSumPathStrings()
|
||||
|
|
@ -2043,7 +2035,7 @@ public class CalciteNestedDataQueryTest extends BaseCalciteQueryTest
|
|||
cannotVectorize();
|
||||
testQuery(
|
||||
"SELECT "
|
||||
+ "JSON_KEYS(nester, '.'), "
|
||||
+ "JSON_KEYS(nester, '$'), "
|
||||
+ "SUM(cnt) "
|
||||
+ "FROM druid.nested GROUP BY 1",
|
||||
ImmutableList.of(
|
||||
|
|
@ -2054,7 +2046,7 @@ public class CalciteNestedDataQueryTest extends BaseCalciteQueryTest
|
|||
.setVirtualColumns(
|
||||
new ExpressionVirtualColumn(
|
||||
"v0",
|
||||
"json_keys(\"nester\",'.')",
|
||||
"json_keys(\"nester\",'$')",
|
||||
ColumnType.STRING_ARRAY,
|
||||
macroTable
|
||||
)
|
||||
|
|
@ -2127,7 +2119,7 @@ public class CalciteNestedDataQueryTest extends BaseCalciteQueryTest
|
|||
cannotVectorize();
|
||||
testQuery(
|
||||
"SELECT "
|
||||
+ "JSON_KEYS(nest, '.'), "
|
||||
+ "JSON_KEYS(nest, '$'), "
|
||||
+ "SUM(cnt) "
|
||||
+ "FROM druid.nested GROUP BY 1",
|
||||
ImmutableList.of(
|
||||
|
|
@ -2138,7 +2130,7 @@ public class CalciteNestedDataQueryTest extends BaseCalciteQueryTest
|
|||
.setVirtualColumns(
|
||||
new ExpressionVirtualColumn(
|
||||
"v0",
|
||||
"json_keys(\"nest\",'.')",
|
||||
"json_keys(\"nest\",'$')",
|
||||
ColumnType.STRING_ARRAY,
|
||||
macroTable
|
||||
)
|
||||
|
|
@ -2253,7 +2245,7 @@ public class CalciteNestedDataQueryTest extends BaseCalciteQueryTest
|
|||
(expected) -> {
|
||||
expected.expect(UnsupportedSQLQueryException.class);
|
||||
expected.expectMessage(
|
||||
"Cannot use [JSON_VALUE_ANY]: [Bad format, '.array.[1]' is not a valid JSONPath path: must start with '$']");
|
||||
"Cannot use [JSON_VALUE_VARCHAR]: [Bad format, '.array.[1]' is not a valid JSONPath path: must start with '$']");
|
||||
}
|
||||
);
|
||||
}
|
||||
|
|
@ -2358,6 +2350,54 @@ public class CalciteNestedDataQueryTest extends BaseCalciteQueryTest
|
|||
);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testCompositionTyping()
|
||||
{
|
||||
testQuery(
|
||||
"SELECT "
|
||||
+ "JSON_VALUE((JSON_OBJECT(KEY 'x' VALUE JSON_VALUE(nest, '$.x' RETURNING BIGINT))), '$.x' RETURNING BIGINT)\n"
|
||||
+ "FROM druid.nested",
|
||||
ImmutableList.of(
|
||||
Druids.newScanQueryBuilder()
|
||||
.dataSource(DATA_SOURCE)
|
||||
.intervals(querySegmentSpec(Filtration.eternity()))
|
||||
.virtualColumns(
|
||||
new ExpressionVirtualColumn(
|
||||
"v0",
|
||||
"json_value(json_object('x',\"v1\"),'$.x', 'LONG')",
|
||||
ColumnType.LONG,
|
||||
macroTable
|
||||
),
|
||||
new NestedFieldVirtualColumn(
|
||||
"nest",
|
||||
"v1",
|
||||
ColumnType.LONG,
|
||||
null,
|
||||
false,
|
||||
"$.x",
|
||||
false
|
||||
)
|
||||
)
|
||||
.columns("v0")
|
||||
.resultFormat(ScanQuery.ResultFormat.RESULT_FORMAT_COMPACTED_LIST)
|
||||
.legacy(false)
|
||||
.build()
|
||||
),
|
||||
ImmutableList.of(
|
||||
new Object[]{100L},
|
||||
new Object[]{NullHandling.defaultLongValue()},
|
||||
new Object[]{200L},
|
||||
new Object[]{NullHandling.defaultLongValue()},
|
||||
new Object[]{NullHandling.defaultLongValue()},
|
||||
new Object[]{100L},
|
||||
new Object[]{NullHandling.defaultLongValue()}
|
||||
),
|
||||
RowSignature.builder()
|
||||
.add("EXPR$0", ColumnType.LONG)
|
||||
.build()
|
||||
);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testToJsonAndParseJson()
|
||||
{
|
||||
|
|
@ -2584,4 +2624,46 @@ public class CalciteNestedDataQueryTest extends BaseCalciteQueryTest
|
|||
|
||||
);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testJsonValueUnDocumentedButSupportedOptions()
|
||||
{
|
||||
testQuery(
|
||||
"SELECT "
|
||||
+ "SUM(JSON_VALUE(nest, '$.z' RETURNING BIGINT NULL ON EMPTY NULL ON ERROR)) "
|
||||
+ "FROM druid.nested",
|
||||
ImmutableList.of(
|
||||
Druids.newTimeseriesQueryBuilder()
|
||||
.dataSource(DATA_SOURCE)
|
||||
.intervals(querySegmentSpec(Filtration.eternity()))
|
||||
.granularity(Granularities.ALL)
|
||||
.virtualColumns(new NestedFieldVirtualColumn("nest", "$.z", "v0", ColumnType.LONG))
|
||||
.aggregators(aggregators(new LongSumAggregatorFactory("a0", "v0")))
|
||||
.context(QUERY_CONTEXT_DEFAULT)
|
||||
.build()
|
||||
),
|
||||
ImmutableList.of(
|
||||
new Object[]{700L}
|
||||
),
|
||||
RowSignature.builder()
|
||||
.add("EXPR$0", ColumnType.LONG)
|
||||
.build()
|
||||
);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testJsonValueUnsupportedOptions()
|
||||
{
|
||||
testQueryThrows(
|
||||
"SELECT "
|
||||
+ "SUM(JSON_VALUE(nest, '$.z' RETURNING BIGINT ERROR ON EMPTY ERROR ON ERROR)) "
|
||||
+ "FROM druid.nested",
|
||||
exception -> {
|
||||
expectedException.expect(IllegalArgumentException.class);
|
||||
expectedException.expectMessage(
|
||||
"Unsupported JSON_VALUE parameter 'ON EMPTY' defined - please re-issue this query without this argument"
|
||||
);
|
||||
}
|
||||
);
|
||||
}
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue