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multi-value string expression transformation fix (#8019) 

* multi-value string expression transformation fix

* fixes

* more docs and test

* revert unintended doc change

* formatting

* change tostring to print binding identifier

* review fixup

* oops
This commit is contained in:
Clint Wylie 2019-07-03 23:03:47 -07:00 committed by Fangjin Yang
parent 685aeac8eb
commit e6ba258197
21 changed files with 511 additions and 248 deletions
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272
core/src/main/java/org/apache/druid/math/expr/Expr.java
View File

@ -32,8 +32,8 @@ import org.apache.druid.java.util.common.StringUtils;
import org.apache.druid.java.util.common.guava.Comparators;
import javax.annotation.Nullable;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Objects;
@ -70,6 +70,15 @@ public interface Expr
throw new ISE("Not a literal");
}
/**
* Returns an {@link IdentifierExpr} if it is one, else null
*/
@Nullable
default IdentifierExpr getIdentifierExprIfIdentifierExpr()
{
return null;
}
/**
* Returns the string identifier of an {@link IdentifierExpr}, else null
*/
@ -80,6 +89,17 @@ public interface Expr
return null;
}
/**
* Returns the string identifier to use to get a value from {@link Expr.ObjectBinding} of an {@link IdentifierExpr},
* else null
*/
@Nullable
default String getIdentifierBindingIfIdentifier()
{
// overridden by things that are identifiers
return null;
}
/**
* Evaluate the {@link Expr} with the bindings which supply {@link IdentifierExpr} with their values, producing an
* {@link ExprEval} with the result.
@ -88,7 +108,7 @@ public interface Expr
/**
* Programmatically inspect the {@link Expr} tree with a {@link Visitor}. Each {@link Expr} is responsible for
* ensuring the {@link Visitor} can visit all of its {@link Expr} children before visiting itself.
* ensuring the {@link Visitor} can visit all of its {@link Expr} children before visiting itself
*/
void visit(Visitor visitor);
@ -147,92 +167,157 @@ public interface Expr
*/
class BindingDetails
{
private final ImmutableSet<String> freeVariables;
private final ImmutableSet<String> scalarVariables;
private final ImmutableSet<String> arrayVariables;
private final ImmutableSet<IdentifierExpr> freeVariables;
private final ImmutableSet<IdentifierExpr> scalarVariables;
private final ImmutableSet<IdentifierExpr> arrayVariables;
public BindingDetails()
{
this(Collections.emptySet(), Collections.emptySet(), Collections.emptySet());
this(ImmutableSet.of(), ImmutableSet.of(), ImmutableSet.of());
}
public BindingDetails(String identifier)
public BindingDetails(IdentifierExpr expr)
{
this(ImmutableSet.of(identifier), Collections.emptySet(), Collections.emptySet());
this(ImmutableSet.of(expr), ImmutableSet.of(), ImmutableSet.of());
}
public BindingDetails(Set<String> freeVariables, Set<String> scalarVariables, Set<String> arrayVariables)
public BindingDetails(
ImmutableSet<IdentifierExpr> freeVariables,
ImmutableSet<IdentifierExpr> scalarVariables,
ImmutableSet<IdentifierExpr> arrayVariables
)
{
this.freeVariables = ImmutableSet.copyOf(freeVariables);
this.scalarVariables = ImmutableSet.copyOf(scalarVariables);
this.arrayVariables = ImmutableSet.copyOf(arrayVariables);
this.freeVariables = freeVariables;
this.scalarVariables = scalarVariables;
this.arrayVariables = arrayVariables;
}
/**
* Get the list of required column inputs to evaluate an expression
*/
public ImmutableList<String> getRequiredColumns()
public List<String> getRequiredColumnsList()
{
return ImmutableList.copyOf(freeVariables);
return new ArrayList<>(freeVariables.stream().map(IdentifierExpr::getIdentifierBindingIfIdentifier).collect(Collectors.toSet()));
}
/**
* Get the set of required column inputs to evaluate an expression, {@link IdentifierExpr#bindingIdentifier}
*/
public Set<String> getRequiredColumns()
{
return freeVariables.stream().map(IdentifierExpr::getIdentifierBindingIfIdentifier).collect(Collectors.toSet());
}
/**
* Set of {@link IdentifierExpr#bindingIdentifier} which are used with scalar operators and functions
*/
public Set<String> getScalarColumns()
{
return scalarVariables.stream().map(IdentifierExpr::getIdentifierBindingIfIdentifier).collect(Collectors.toSet());
}
/**
* Set of {@link IdentifierExpr#bindingIdentifier} which are used with array typed functions and apply functions.
*/
public Set<String> getArrayColumns()
{
return arrayVariables.stream().map(IdentifierExpr::getIdentifierBindingIfIdentifier).collect(Collectors.toSet());
}
/**
* Total set of 'free' identifiers of an {@link Expr}, that are not supplied by a {@link LambdaExpr} binding
*/
public ImmutableSet<String> getFreeVariables()
public Set<IdentifierExpr> getFreeVariables()
{
return freeVariables;
}
/**
* Set of identifiers which are used with scalar operators and functions
* Set of {@link IdentifierExpr#identifier} which are used with scalar operators and functions.
*/
public ImmutableSet<String> getScalarVariables()
public Set<String> getScalarVariables()
{
return scalarVariables;
return scalarVariables.stream().map(IdentifierExpr::getIdentifier).collect(Collectors.toSet());
}
/**
* Set of identifiers which are used with array typed functions and apply functions.
* Set of {@link IdentifierExpr#identifier} which are used with array typed functions and apply functions.
*/
public ImmutableSet<String> getArrayVariables()
public Set<String> getArrayVariables()
{
return arrayVariables;
return arrayVariables.stream().map(IdentifierExpr::getIdentifier).collect(Collectors.toSet());
}
public BindingDetails merge(BindingDetails other)
/**
* Combine with {@link BindingDetails} from {@link Expr#analyzeInputs()}
*/
public BindingDetails with(Expr other)
{
return with(other.analyzeInputs());
}
/**
* Combine (union) another {@link BindingDetails}
*/
public BindingDetails with(BindingDetails other)
{
return new BindingDetails(
Sets.union(freeVariables, other.freeVariables),
Sets.union(scalarVariables, other.scalarVariables),
Sets.union(arrayVariables, other.arrayVariables)
ImmutableSet.copyOf(Sets.union(freeVariables, other.freeVariables)),
ImmutableSet.copyOf(Sets.union(scalarVariables, other.scalarVariables)),
ImmutableSet.copyOf(Sets.union(arrayVariables, other.arrayVariables))
);
}
public BindingDetails mergeWith(Set<String> moreScalars, Set<String> moreArrays)
/**
* Add set of arguments as {@link BindingDetails#scalarVariables} that are *directly* {@link IdentifierExpr},
* else they are ignored.
*/
public BindingDetails withScalarArguments(Set<Expr> scalarArguments)
{
return new BindingDetails(
Sets.union(freeVariables, Sets.union(moreScalars, moreArrays)),
Sets.union(scalarVariables, moreScalars),
Sets.union(arrayVariables, moreArrays)
);
Set<IdentifierExpr> moreScalars = new HashSet<>();
for (Expr expr : scalarArguments) {
final IdentifierExpr stringIdentifier = expr.getIdentifierExprIfIdentifierExpr();
if (stringIdentifier != null) {
moreScalars.add((IdentifierExpr) expr);
}
}
public BindingDetails mergeWithScalars(Set<String> moreScalars)
{
return new BindingDetails(
Sets.union(freeVariables, moreScalars),
Sets.union(scalarVariables, moreScalars),
ImmutableSet.copyOf(Sets.union(freeVariables, moreScalars)),
ImmutableSet.copyOf(Sets.union(scalarVariables, moreScalars)),
arrayVariables
);
}
public BindingDetails mergeWithArrays(Set<String> moreArrays)
/**
* Add set of arguments as {@link BindingDetails#arrayVariables} that are *directly* {@link IdentifierExpr},
* else they are ignored.
*/
public BindingDetails withArrayArguments(Set<Expr> arrayArguments)
{
Set<IdentifierExpr> arrayIdentifiers = new HashSet<>();
for (Expr expr : arrayArguments) {
final IdentifierExpr isIdentifier = expr.getIdentifierExprIfIdentifierExpr();
if (isIdentifier != null) {
arrayIdentifiers.add((IdentifierExpr) expr);
}
}
return new BindingDetails(
ImmutableSet.copyOf(Sets.union(freeVariables, arrayIdentifiers)),
scalarVariables,
ImmutableSet.copyOf(Sets.union(arrayVariables, arrayIdentifiers))
);
}
/**
* Remove any {@link IdentifierExpr} that are from a {@link LambdaExpr}, since the {@link ApplyFunction} will
* provide bindings for these variables.
*/
public BindingDetails removeLambdaArguments(Set<String> lambda)
{
return new BindingDetails(
Sets.union(freeVariables, moreArrays),
scalarVariables,
Sets.union(arrayVariables, moreArrays)
ImmutableSet.copyOf(freeVariables.stream().filter(x -> !lambda.contains(x.getIdentifier())).iterator()),
ImmutableSet.copyOf(scalarVariables.stream().filter(x -> !lambda.contains(x.getIdentifier())).iterator()),
ImmutableSet.copyOf(arrayVariables.stream().filter(x -> !lambda.contains(x.getIdentifier())).iterator())
);
}
}
@ -482,18 +567,44 @@ class DoubleArrayExpr extends ConstantExpr
class IdentifierExpr implements Expr
{
private final String identifier;
private final String bindingIdentifier;
IdentifierExpr(String value)
{
this.identifier = value;
this.bindingIdentifier = value;
}
IdentifierExpr(String identifier, String bindingIdentifier)
{
this.identifier = identifier;
this.bindingIdentifier = bindingIdentifier;
}
@Override
public String toString()
{
return bindingIdentifier;
}
/**
* Unique identifier
*/
@Nullable
public String getIdentifier()
{
return identifier;
}
/**
* Value binding identifier
*/
@Nullable
public String getBindingIdentifier()
{
return bindingIdentifier;
}
@Nullable
@Override
public String getIdentifierIfIdentifier()
@ -501,16 +612,30 @@ class IdentifierExpr implements Expr
return identifier;
}
@Nullable
@Override
public String getIdentifierBindingIfIdentifier()
{
return bindingIdentifier;
}
@Nullable
@Override
public IdentifierExpr getIdentifierExprIfIdentifierExpr()
{
return this;
}
@Override
public BindingDetails analyzeInputs()
{
return new BindingDetails(identifier);
return new BindingDetails(this);
}
@Override
public ExprEval eval(ObjectBinding bindings)
{
return ExprEval.bestEffortOf(bindings.get(identifier));
return ExprEval.bestEffortOf(bindings.get(bindingIdentifier));
}
@Override
@ -600,11 +725,7 @@ class LambdaExpr implements Expr
{
final Set<String> lambdaArgs = args.stream().map(IdentifierExpr::toString).collect(Collectors.toSet());
BindingDetails bodyDetails = expr.analyzeInputs();
return new BindingDetails(
Sets.difference(bodyDetails.getFreeVariables(), lambdaArgs),
Sets.difference(bodyDetails.getScalarVariables(), lambdaArgs),
Sets.difference(bodyDetails.getArrayVariables(), lambdaArgs)
);
return bodyDetails.removeLambdaArguments(lambdaArgs);
}
}
@ -658,28 +779,13 @@ class FunctionExpr implements Expr
@Override
public BindingDetails analyzeInputs()
{
final Set<String> scalarVariables = new HashSet<>();
final Set<String> arrayVariables = new HashSet<>();
final Set<Expr> scalarArgs = function.getScalarInputs(args);
final Set<Expr> arrayArgs = function.getArrayInputs(args);
BindingDetails accumulator = new BindingDetails();
for (Expr arg : args) {
accumulator = accumulator.merge(arg.analyzeInputs());
accumulator = accumulator.with(arg);
}
for (Expr arg : scalarArgs) {
String s = arg.getIdentifierIfIdentifier();
if (s != null) {
scalarVariables.add(s);
}
}
for (Expr arg : arrayArgs) {
String s = arg.getIdentifierIfIdentifier();
if (s != null) {
arrayVariables.add(s);
}
}
return accumulator.mergeWith(scalarVariables, arrayVariables);
return accumulator.withScalarArguments(function.getScalarInputs(args))
.withArrayArguments(function.getArrayInputs(args));
}
}
@ -714,21 +820,11 @@ class ApplyFunctionExpr implements Expr
for (Expr arg : argsExpr) {
BindingDetails argDetails = arg.analyzeInputs();
argBindingDetailsBuilder.add(argDetails);
accumulator = accumulator.merge(argDetails);
}
final Set<String> arrayVariables = new HashSet<>();
Set<Expr> arrayArgs = function.getArrayInputs(argsExpr);
for (Expr arg : arrayArgs) {
String s = arg.getIdentifierIfIdentifier();
if (s != null) {
arrayVariables.add(s);
}
accumulator = accumulator.with(argDetails);
}
lambdaBindingDetails = lambdaExpr.analyzeInputs();
bindingDetails = accumulator.merge(lambdaBindingDetails).mergeWithArrays(arrayVariables);
bindingDetails = accumulator.with(lambdaBindingDetails).withArrayArguments(function.getArrayInputs(argsExpr));
argsBindingDetails = argBindingDetailsBuilder.build();
}
@ -804,14 +900,7 @@ abstract class UnaryExpr implements Expr
public BindingDetails analyzeInputs()
{
// currently all unary operators only operate on scalar inputs
final Set<String> scalars;
final String identifierMaybe = expr.getIdentifierIfIdentifier();
if (identifierMaybe != null) {
scalars = ImmutableSet.of(identifierMaybe);
} else {
scalars = Collections.emptySet();
}
return expr.analyzeInputs().mergeWithScalars(scalars);
return expr.analyzeInputs().withScalarArguments(ImmutableSet.of(expr));
}
}
@ -934,18 +1023,7 @@ abstract class BinaryOpExprBase implements Expr
public BindingDetails analyzeInputs()
{
// currently all binary operators operate on scalar inputs
final Set<String> scalars = new HashSet<>();
final String leftIdentifer = left.getIdentifierIfIdentifier();
final String rightIdentifier = right.getIdentifierIfIdentifier();
if (leftIdentifer != null) {
scalars.add(leftIdentifer);
}
if (rightIdentifier != null) {
scalars.add(rightIdentifier);
}
return left.analyzeInputs()
.merge(right.analyzeInputs())
.mergeWithScalars(scalars);
return left.analyzeInputs().with(right).withScalarArguments(ImmutableSet.of(left, right));
}
}

72
core/src/main/java/org/apache/druid/math/expr/ExprListenerImpl.java
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@ -24,14 +24,17 @@ import org.antlr.v4.runtime.tree.TerminalNode;
import org.apache.commons.lang.StringEscapeUtils;
import org.apache.druid.annotations.UsedInGeneratedCode;
import org.apache.druid.java.util.common.RE;
import org.apache.druid.java.util.common.StringUtils;
import org.apache.druid.math.expr.antlr.ExprBaseListener;
import org.apache.druid.math.expr.antlr.ExprParser;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
/**
* Implementation of antlr parse tree listener, transforms {@link ParseTree} to {@link Expr}, based on the grammar
@ -44,11 +47,17 @@ public class ExprListenerImpl extends ExprBaseListener
private final ExprMacroTable macroTable;
private final ParseTree rootNodeKey;
private final Set<String> lambdaIdentifiers;
private final Set<String> uniqueIdentifiers;
private int uniqueCounter = 0;
ExprListenerImpl(ParseTree rootNodeKey, ExprMacroTable macroTable)
{
this.rootNodeKey = rootNodeKey;
this.macroTable = macroTable;
this.nodes = new HashMap<>();
this.lambdaIdentifiers = new HashSet<>();
this.uniqueIdentifiers = new HashSet<>();
}
Expr getAST()
@ -347,14 +356,19 @@ public class ExprListenerImpl extends ExprBaseListener
@Override
public void exitIdentifierExpr(ExprParser.IdentifierExprContext ctx)
{
String text = ctx.getText();
if (text.charAt(0) == '"' && text.charAt(text.length() - 1) == '"') {
text = StringEscapeUtils.unescapeJava(text.substring(1, text.length() - 1));
final String text = sanitizeIdentifierString(ctx.getText());
nodes.put(ctx, createIdentifierExpr(text));
}
@Override
public void enterLambda(ExprParser.LambdaContext ctx)
{
// mark lambda identifiers on enter, for reference later when creating the IdentifierExpr inside of the lambdas
for (int i = 0; i < ctx.IDENTIFIER().size(); i++) {
String text = ctx.IDENTIFIER(i).getText();
text = sanitizeIdentifierString(text);
this.lambdaIdentifiers.add(text);
}
nodes.put(
ctx,
new IdentifierExpr(text)
);
}
@Override
@ -363,10 +377,10 @@ public class ExprListenerImpl extends ExprBaseListener
List<IdentifierExpr> identifiers = new ArrayList<>(ctx.IDENTIFIER().size());
for (int i = 0; i < ctx.IDENTIFIER().size(); i++) {
String text = ctx.IDENTIFIER(i).getText();
if (text.charAt(0) == '"' && text.charAt(text.length() - 1) == '"') {
text = StringEscapeUtils.unescapeJava(text.substring(1, text.length() - 1));
}
identifiers.add(i, new IdentifierExpr(text));
text = sanitizeIdentifierString(text);
identifiers.add(i, createIdentifierExpr(text));
// clean up lambda identifier references on exit
lambdaIdentifiers.remove(text);
}
nodes.put(ctx, new LambdaExpr(identifiers, (Expr) nodes.get(ctx.expr())));
@ -405,6 +419,42 @@ public class ExprListenerImpl extends ExprBaseListener
nodes.put(ctx, new StringArrayExpr(new String[0]));
}
/**
* All {@link IdentifierExpr} that are *not* bound to a {@link LambdaExpr} identifier, will recieve a unique
* {@link IdentifierExpr#identifier} value which may or may not be the same as the
* {@link IdentifierExpr#bindingIdentifier} value. {@link LambdaExpr} identifiers however, will always have
* {@link IdentifierExpr#identifier} be the same as {@link IdentifierExpr#bindingIdentifier} because they have
* synthetic bindings set at evaluation time. This is done to aid in analysis needed for the automatic expression
* translation which maps scalar expressions to multi-value inputs. See
* {@link Parser#applyUnappliedIdentifiers(Expr, Expr.BindingDetails, List)}} for additional details.
*/
private IdentifierExpr createIdentifierExpr(String binding)
{
if (!lambdaIdentifiers.contains(binding)) {
String uniqueIdentifier = binding;
while (uniqueIdentifiers.contains(uniqueIdentifier)) {
uniqueIdentifier = StringUtils.format("%s_%s", binding, uniqueCounter++);
}
uniqueIdentifiers.add(uniqueIdentifier);
return new IdentifierExpr(uniqueIdentifier, binding);
}
return new IdentifierExpr(binding);
}
/**
* Remove double quotes from an identifier variable string, returning unqouted identifier
*/
private static String sanitizeIdentifierString(String text)
{
if (text.charAt(0) == '"' && text.charAt(text.length() - 1) == '"') {
text = StringEscapeUtils.unescapeJava(text.substring(1, text.length() - 1));
}
return text;
}
/**
* Remove single quote from a string literal, returning unquoted string value
*/
private static String escapeStringLiteral(String text)
{
String unquoted = text.substring(1, text.length() - 1);

17
core/src/main/java/org/apache/druid/math/expr/ExprMacroTable.java
View File

@ -112,11 +112,7 @@ public class ExprMacroTable
@Override
public BindingDetails analyzeInputs()
{
final String identifier = arg.getIdentifierIfIdentifier();
if (identifier == null) {
return arg.analyzeInputs();
}
return arg.analyzeInputs().mergeWithScalars(ImmutableSet.of(identifier));
return arg.analyzeInputs().withScalarArguments(ImmutableSet.of(arg));
}
}
@ -145,16 +141,13 @@ public class ExprMacroTable
@Override
public BindingDetails analyzeInputs()
{
Set<String> scalars = new HashSet<>();
final Set<Expr> argSet = new HashSet<>(args.size());
BindingDetails accumulator = new BindingDetails();
for (Expr arg : args) {
final String identifier = arg.getIdentifierIfIdentifier();
if (identifier != null) {
scalars.add(identifier);
accumulator = accumulator.with(arg);
argSet.add(arg);
}
accumulator = accumulator.merge(arg.analyzeInputs());
}
return accumulator.mergeWithScalars(scalars);
return accumulator.withScalarArguments(argSet);
}
}
}

101
core/src/main/java/org/apache/druid/math/expr/Parser.java
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@ -171,13 +171,9 @@ public class Parser
return expr;
}
List<String> unapplied = toApply.stream()
.filter(x -> bindingDetails.getFreeVariables().contains(x))
.filter(x -> bindingDetails.getRequiredColumns().contains(x))
.collect(Collectors.toList());
ApplyFunction fn;
final LambdaExpr lambdaExpr;
final List<Expr> args;
// any unapplied identifiers that are inside a lambda expression need that lambda expression to be rewritten
Expr newExpr = expr.visit(
childExpr -> {
@ -215,26 +211,52 @@ public class Parser
return newExpr;
}
// else, it *should be safe* to wrap in either map or cartesian_map because we still have missing bindings that
// were *not* referenced in a lambda body
if (remainingUnappliedArgs.size() == 1) {
fn = new ApplyFunction.MapFunction();
IdentifierExpr lambdaArg = new IdentifierExpr(remainingUnappliedArgs.iterator().next());
lambdaExpr = new LambdaExpr(ImmutableList.of(lambdaArg), newExpr);
args = ImmutableList.of(lambdaArg);
} else {
fn = new ApplyFunction.CartesianMapFunction();
List<IdentifierExpr> identifiers = new ArrayList<>(remainingUnappliedArgs.size());
args = new ArrayList<>(remainingUnappliedArgs.size());
for (String remainingUnappliedArg : remainingUnappliedArgs) {
IdentifierExpr arg = new IdentifierExpr(remainingUnappliedArg);
identifiers.add(arg);
args.add(arg);
}
lambdaExpr = new LambdaExpr(identifiers, newExpr);
return applyUnapplied(newExpr, remainingUnappliedArgs);
}
Expr magic = new ApplyFunctionExpr(fn, fn.name(), lambdaExpr, args);
/**
* translate an {@link Expr} into an {@link ApplyFunctionExpr} for {@link ApplyFunction.MapFunction} or
* {@link ApplyFunction.CartesianMapFunction} if there are multiple unbound arguments to be applied
*/
private static Expr applyUnapplied(Expr expr, List<String> unapplied)
{
// wrap an expression in either map or cartesian_map to apply any unapplied identifiers
final Map<IdentifierExpr, IdentifierExpr> toReplace = new HashMap<>();
final List<IdentifierExpr> args = expr.analyzeInputs()
.getFreeVariables()
.stream()
.filter(x -> unapplied.contains(x.getBindingIdentifier()))
.collect(Collectors.toList());
final List<IdentifierExpr> lambdaArgs = new ArrayList<>();
// construct lambda args from list of args to apply
for (IdentifierExpr applyFnArg : args) {
IdentifierExpr lambdaRewrite = new IdentifierExpr(applyFnArg.getIdentifier());
lambdaArgs.add(lambdaRewrite);
toReplace.put(applyFnArg, lambdaRewrite);
}
// rewrite identifiers in the expression which will become the lambda body, so they match the lambda identifiers we
// are constructing
Expr newExpr = expr.visit(childExpr -> {
if (childExpr instanceof IdentifierExpr) {
if (toReplace.containsKey(childExpr)) {
return toReplace.get(childExpr);
}
}
return childExpr;
});
final LambdaExpr lambdaExpr = new LambdaExpr(lambdaArgs, newExpr);
final ApplyFunction fn;
if (args.size() == 1) {
fn = new ApplyFunction.MapFunction();
} else {
fn = new ApplyFunction.CartesianMapFunction();
}
final Expr magic = new ApplyFunctionExpr(fn, fn.name(), lambdaExpr, ImmutableList.copyOf(args));
return magic;
}
@ -249,27 +271,37 @@ public class Parser
*/
private static ApplyFunctionExpr liftApplyLambda(ApplyFunctionExpr expr, List<String> unappliedArgs)
{
// recursively evaluate arguments to ensure they are properly transformed into arrays as necessary
List<String> unappliedInThisApply =
Set<String> unappliedInThisApply =
unappliedArgs.stream()
.filter(u -> !expr.bindingDetails.getArrayVariables().contains(u))
.filter(u -> !expr.bindingDetails.getArrayColumns().contains(u))
.collect(Collectors.toSet());
List<String> unappliedIdentifiers =
expr.bindingDetails
.getFreeVariables()
.stream()
.filter(x -> unappliedInThisApply.contains(x.getIdentifierBindingIfIdentifier()))
.map(IdentifierExpr::getIdentifierIfIdentifier)
.collect(Collectors.toList());
List<Expr> newArgs = new ArrayList<>();
for (int i = 0; i < expr.argsExpr.size(); i++) {
newArgs.add(applyUnappliedIdentifiers(
newArgs.add(
applyUnappliedIdentifiers(
expr.argsExpr.get(i),
expr.argsBindingDetails.get(i),
unappliedInThisApply)
unappliedIdentifiers
)
);
}
// this will _not_ include the lambda identifiers.. anything in this list needs to be applied
List<IdentifierExpr> unappliedLambdaBindings = expr.lambdaBindingDetails.getFreeVariables()
List<IdentifierExpr> unappliedLambdaBindings =
expr.lambdaBindingDetails.getFreeVariables()
.stream()
.filter(unappliedArgs::contains)
.map(IdentifierExpr::new)
.filter(x -> unappliedArgs.contains(x.getIdentifierBindingIfIdentifier()))
.map(x -> new IdentifierExpr(x.getIdentifier(), x.getBindingIdentifier()))
.collect(Collectors.toList());
if (unappliedLambdaBindings.size() == 0) {
@ -321,11 +353,12 @@ public class Parser
// cartesian_fold((x, y, acc) -> acc + x + y + z, x, y, acc) =>
// cartesian_fold((x, y, z, acc) -> acc + x + y + z, x, y, z, acc)
final List<Expr> newFoldArgs = new ArrayList<>(expr.argsExpr.size() + unappliedLambdaBindings.size());
final List<Expr> newFoldArgs =
new ArrayList<>(expr.argsExpr.size() + unappliedLambdaBindings.size());
final List<IdentifierExpr> newFoldLambdaIdentifiers =
new ArrayList<>(expr.lambdaExpr.getIdentifiers().size() + unappliedLambdaBindings.size());
final List<IdentifierExpr> existingFoldLambdaIdentifiers = expr.lambdaExpr.getIdentifierExprs();
// accumulator argument is last argument, slice it off when constructing new arg list and lambda args identifiers
// accumulator argument is last argument, slice it off when constructing new arg list and lambda args
for (int i = 0; i < expr.argsExpr.size() - 1; i++) {
newFoldArgs.add(expr.argsExpr.get(i));
newFoldLambdaIdentifiers.add(existingFoldLambdaIdentifiers.get(i));
@ -353,7 +386,7 @@ public class Parser
public static void validateExpr(Expr expression, Expr.BindingDetails bindingDetails)
{
final Set<String> conflicted =
Sets.intersection(bindingDetails.getScalarVariables(), bindingDetails.getArrayVariables());
Sets.intersection(bindingDetails.getScalarColumns(), bindingDetails.getArrayColumns());
if (conflicted.size() != 0) {
throw new RE("Invalid expression: %s; %s used as both scalar and array variables", expression, conflicted);
}

59
core/src/test/java/org/apache/druid/math/expr/ParserTest.java
View File

@ -75,6 +75,7 @@ public class ParserTest
validateParser("x!=y", "(!= x y)", ImmutableList.of("x", "y"));
validateParser("x && y", "(&& x y)", ImmutableList.of("x", "y"));
validateParser("x || y", "(|| x y)", ImmutableList.of("x", "y"));
}
@Test
@ -92,7 +93,7 @@ public class ParserTest
validateParser("x-y+z", "(+ (- x y) z)", ImmutableList.of("x", "y", "z"));
validateParser("x-y-z", "(- (- x y) z)", ImmutableList.of("x", "y", "z"));
validateParser("x-y-x", "(- (- x y) x)", ImmutableList.of("x", "y"));
validateParser("x-y-x", "(- (- x y) x)", ImmutableList.of("x", "y"), ImmutableSet.of("x", "x_0", "y"));
}
@Test
@ -195,7 +196,7 @@ public class ParserTest
public void testFunctions()
{
validateParser("sqrt(x)", "(sqrt [x])", ImmutableList.of("x"));
validateParser("if(cond,then,else)", "(if [cond, then, else])", ImmutableList.of("cond", "then", "else"));
validateParser("if(cond,then,else)", "(if [cond, then, else])", ImmutableList.of("else", "then", "cond"));
validateParser("cast(x, 'STRING')", "(cast [x, STRING])", ImmutableList.of("x"));
validateParser("cast(x, 'LONG')", "(cast [x, LONG])", ImmutableList.of("x"));
validateParser("cast(x, 'DOUBLE')", "(cast [x, DOUBLE])", ImmutableList.of("x"));
@ -275,12 +276,12 @@ public class ParserTest
"(+ x (map ([x] -> (+ x 1)), [x]))",
ImmutableList.of("x"),
ImmutableSet.of("x"),
ImmutableSet.of("x")
ImmutableSet.of("x_0")
);
validateParser(
"map((x) -> concat(x, y), z)",
"(map ([x] -> (concat [x, y])), [z])",
ImmutableList.of("z", "y"),
ImmutableList.of("y", "z"),
ImmutableSet.of("y"),
ImmutableSet.of("z")
);
@ -303,14 +304,14 @@ public class ParserTest
validateParser(
"array_append(z, fold((x, acc) -> acc + x, map((x) -> x + 1, x), y))",
"(array_append [z, (fold ([x, acc] -> (+ acc x)), [(map ([x] -> (+ x 1)), [x]), y])])",
ImmutableList.of("z", "x", "y"),
ImmutableList.of("x", "y", "z"),
ImmutableSet.of(),
ImmutableSet.of("x", "z")
);
validateParser(
"map(z -> z + 1, array_append(z, fold((x, acc) -> acc + x, map((x) -> x + 1, x), y)))",
"(map ([z] -> (+ z 1)), [(array_append [z, (fold ([x, acc] -> (+ acc x)), [(map ([x] -> (+ x 1)), [x]), y])])])",
ImmutableList.of("z", "x", "y"),
ImmutableList.of("x", "y", "z"),
ImmutableSet.of(),
ImmutableSet.of("x", "z")
);
@ -318,7 +319,7 @@ public class ParserTest
validateParser(
"array_append(map(z -> z + 1, array_append(z, fold((x, acc) -> acc + x, map((x) -> x + 1, x), y))), a)",
"(array_append [(map ([z] -> (+ z 1)), [(array_append [z, (fold ([x, acc] -> (+ acc x)), [(map ([x] -> (+ x 1)), [x]), y])])]), a])",
ImmutableList.of("z", "x", "y", "a"),
ImmutableList.of("a", "x", "y", "z"),
ImmutableSet.of("a"),
ImmutableSet.of("x", "z")
);
@ -400,6 +401,48 @@ public class ParserTest
);
}
@Test
public void testUniquify()
{
validateParser("x-x", "(- x x)", ImmutableList.of("x"), ImmutableSet.of("x", "x_0"));
validateParser(
"x - x + x",
"(+ (- x x) x)",
ImmutableList.of("x"),
ImmutableSet.of("x", "x_0", "x_1")
);
validateParser(
"map((x) -> x + x, x)",
"(map ([x] -> (+ x x)), [x])",
ImmutableList.of("x"),
ImmutableSet.of(),
ImmutableSet.of("x")
);
validateApplyUnapplied(
"x + x",
"(+ x x)",
"(cartesian_map ([x, x_0] -> (+ x x_0)), [x, x])",
ImmutableList.of("x")
);
validateApplyUnapplied(
"x + x + x",
"(+ (+ x x) x)",
"(cartesian_map ([x, x_0, x_1] -> (+ (+ x x_0) x_1)), [x, x, x])",
ImmutableList.of("x")
);
// heh
validateApplyUnapplied(
"x + x + x + y + y + y + y + z + z + z",
"(+ (+ (+ (+ (+ (+ (+ (+ (+ x x) x) y) y) y) y) z) z) z)",
"(cartesian_map ([x, x_0, x_1, y, y_2, y_3, y_4, z, z_5, z_6] -> (+ (+ (+ (+ (+ (+ (+ (+ (+ x x_0) x_1) y) y_2) y_3) y_4) z) z_5) z_6)), [x, x, x, y, y, y, y, z, z, z])",
ImmutableList.of("x", "y", "z")
);
}
private void validateFlatten(String expression, String withoutFlatten, String withFlatten)
{
@ -428,7 +471,7 @@ public class ParserTest
final Expr parsed = Parser.parse(expression, ExprMacroTable.nil());
final Expr.BindingDetails deets = parsed.analyzeInputs();
Assert.assertEquals(expression, expected, parsed.toString());
Assert.assertEquals(expression, identifiers, deets.getRequiredColumns());
Assert.assertEquals(expression, identifiers, deets.getRequiredColumnsList());
Assert.assertEquals(expression, scalars, deets.getScalarVariables());
Assert.assertEquals(expression, arrays, deets.getArrayVariables());
}

2
processing/src/main/java/org/apache/druid/query/aggregation/SimpleDoubleAggregatorFactory.java
View File

@ -121,7 +121,7 @@ public abstract class SimpleDoubleAggregatorFactory extends NullableAggregatorFa
{
return fieldName != null
? Collections.singletonList(fieldName)
: fieldExpression.get().analyzeInputs().getRequiredColumns();
: fieldExpression.get().analyzeInputs().getRequiredColumnsList();
}
@Override

2
processing/src/main/java/org/apache/druid/query/aggregation/SimpleFloatAggregatorFactory.java
View File

@ -115,7 +115,7 @@ public abstract class SimpleFloatAggregatorFactory extends NullableAggregatorFac
{
return fieldName != null
? Collections.singletonList(fieldName)
: fieldExpression.get().analyzeInputs().getRequiredColumns();
: fieldExpression.get().analyzeInputs().getRequiredColumnsList();
}
@Override

2
processing/src/main/java/org/apache/druid/query/aggregation/SimpleLongAggregatorFactory.java
View File

@ -111,7 +111,7 @@ public abstract class SimpleLongAggregatorFactory extends NullableAggregatorFact
{
return fieldName != null
? Collections.singletonList(fieldName)
: fieldExpression.get().analyzeInputs().getRequiredColumns();
: fieldExpression.get().analyzeInputs().getRequiredColumnsList();
}
@Override

2
processing/src/main/java/org/apache/druid/query/aggregation/post/ExpressionPostAggregator.java
View File

@ -118,7 +118,7 @@ public class ExpressionPostAggregator implements PostAggregator
macroTable,
finalizers,
parsed,
Suppliers.memoize(() -> parsed.get().analyzeInputs().getFreeVariables()));
Suppliers.memoize(() -> parsed.get().analyzeInputs().getRequiredColumns()));
}
private ExpressionPostAggregator(

16
processing/src/main/java/org/apache/druid/query/expression/TrimExprMacro.java
View File

@ -19,15 +19,14 @@
package org.apache.druid.query.expression;
import com.google.common.collect.ImmutableSet;
import org.apache.druid.java.util.common.IAE;
import org.apache.druid.math.expr.Expr;
import org.apache.druid.math.expr.ExprEval;
import org.apache.druid.math.expr.ExprMacroTable;
import javax.annotation.Nonnull;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
public abstract class TrimExprMacro implements ExprMacroTable.ExprMacro
{
@ -239,16 +238,9 @@ public abstract class TrimExprMacro implements ExprMacroTable.ExprMacro
@Override
public BindingDetails analyzeInputs()
{
final String stringIdentifier = stringExpr.getIdentifierIfIdentifier();
final Set<String> scalars = new HashSet<>();
if (stringIdentifier != null) {
scalars.add(stringIdentifier);
}
final String charsIdentifier = charsExpr.getIdentifierIfIdentifier();
if (charsIdentifier != null) {
scalars.add(charsIdentifier);
}
return stringExpr.analyzeInputs().merge(charsExpr.analyzeInputs()).mergeWithScalars(scalars);
return stringExpr.analyzeInputs()
.with(charsExpr)
.withScalarArguments(ImmutableSet.of(stringExpr, charsExpr));
}
}

2
processing/src/main/java/org/apache/druid/query/filter/ExpressionDimFilter.java
View File

@ -77,7 +77,7 @@ public class ExpressionDimFilter implements DimFilter
@Override
public HashSet<String> getRequiredColumns()
{
return Sets.newHashSet(parsed.get().analyzeInputs().getFreeVariables());
return Sets.newHashSet(parsed.get().analyzeInputs().getRequiredColumns());
}
@Override

2
processing/src/main/java/org/apache/druid/segment/filter/ExpressionFilter.java
View File

@ -48,7 +48,7 @@ public class ExpressionFilter implements Filter
public ExpressionFilter(final Supplier<Expr> expr)
{
this.expr = expr;
this.requiredBindings = Suppliers.memoize(() -> expr.get().analyzeInputs().getFreeVariables());
this.requiredBindings = Suppliers.memoize(() -> expr.get().analyzeInputs().getRequiredColumns());
}
@Override

16
processing/src/main/java/org/apache/druid/segment/virtual/ExpressionSelectors.java
View File

@ -142,7 +142,7 @@ public class ExpressionSelectors
{
final Expr.BindingDetails exprDetails = expression.analyzeInputs();
Parser.validateExpr(expression, exprDetails);
final List<String> columns = exprDetails.getRequiredColumns();
final List<String> columns = exprDetails.getRequiredColumnsList();
if (columns.size() == 1) {
final String column = Iterables.getOnlyElement(columns);
@ -160,7 +160,7 @@ public class ExpressionSelectors
&& capabilities.isDictionaryEncoded()
&& capabilities.isComplete()
&& !capabilities.hasMultipleValues()
&& !exprDetails.getArrayVariables().contains(column)) {
&& !exprDetails.getArrayColumns().contains(column)) {
// Optimization for expressions that hit one string column and nothing else.
return new SingleStringInputCachingExpressionColumnValueSelector(
columnSelectorFactory.makeDimensionSelector(new DefaultDimensionSpec(column, column, ValueType.STRING)),
@ -176,7 +176,7 @@ public class ExpressionSelectors
final List<String> needsApplied =
columns.stream()
.filter(c -> actualArrays.contains(c) && !exprDetails.getArrayVariables().contains(c))
.filter(c -> actualArrays.contains(c) && !exprDetails.getArrayColumns().contains(c))
.collect(Collectors.toList());
final Expr finalExpr;
if (needsApplied.size() > 0) {
@ -219,7 +219,7 @@ public class ExpressionSelectors
{
final Expr.BindingDetails exprDetails = expression.analyzeInputs();
Parser.validateExpr(expression, exprDetails);
final List<String> columns = exprDetails.getRequiredColumns();
final List<String> columns = exprDetails.getRequiredColumnsList();
if (columns.size() == 1) {
@ -231,7 +231,7 @@ public class ExpressionSelectors
&& capabilities.isDictionaryEncoded()
&& capabilities.isComplete()
&& !capabilities.hasMultipleValues()
&& !exprDetails.getArrayVariables().contains(column)
&& !exprDetails.getArrayColumns().contains(column)
) {
// Optimization for dimension selectors that wrap a single underlying string column.
return new SingleStringInputDimensionSelector(
@ -249,7 +249,7 @@ public class ExpressionSelectors
final ColumnValueSelector<ExprEval> baseSelector = makeExprEvalSelector(columnSelectorFactory, expression);
final boolean multiVal = actualArrays.size() > 0 ||
exprDetails.getArrayVariables().size() > 0 ||
exprDetails.getArrayColumns().size() > 0 ||
unknownIfArrays.size() > 0;
if (baseSelector instanceof ConstantExprEvalSelector) {
@ -355,7 +355,7 @@ public class ExpressionSelectors
)
{
final Map<String, Supplier<Object>> suppliers = new HashMap<>();
final List<String> columns = bindingDetails.getRequiredColumns();
final List<String> columns = bindingDetails.getRequiredColumnsList();
for (String columnName : columns) {
final ColumnCapabilities columnCapabilities = columnSelectorFactory
.getColumnCapabilities(columnName);
@ -530,7 +530,7 @@ public class ExpressionSelectors
} else if (
!capabilities.isComplete() &&
capabilities.getType().equals(ValueType.STRING) &&
!exprDetails.getArrayVariables().contains(column)
!exprDetails.getArrayColumns().contains(column)
) {
unknownIfArrays.add(column);
}

2
processing/src/main/java/org/apache/druid/segment/virtual/ExpressionVirtualColumn.java
View File

@ -111,7 +111,7 @@ public class ExpressionVirtualColumn implements VirtualColumn
@Override
public List<String> requiredColumns()
{
return parsedExpression.get().analyzeInputs().getRequiredColumns();
return parsedExpression.get().analyzeInputs().getRequiredColumnsList();
}
@Override

2
processing/src/main/java/org/apache/druid/segment/virtual/RowBasedExpressionColumnValueSelector.java
View File

@ -53,7 +53,7 @@ public class RowBasedExpressionColumnValueSelector extends ExpressionColumnValue
{
super(expression, bindings);
this.unknownColumns = unknownColumnsSet.stream()
.filter(x -> !baseExprBindingDetails.getArrayVariables().contains(x))
.filter(x -> !baseExprBindingDetails.getArrayColumns().contains(x))
.collect(Collectors.toList());
this.baseExprBindingDetails = baseExprBindingDetails;
this.ignoredColumns = new HashSet<>();

2
processing/src/main/java/org/apache/druid/segment/virtual/SingleLongInputCachingExpressionColumnValueSelector.java
View File

@ -59,7 +59,7 @@ public class SingleLongInputCachingExpressionColumnValueSelector implements Colu
)
{
// Verify expression has just one binding.
if (expression.analyzeInputs().getFreeVariables().size() != 1) {
if (expression.analyzeInputs().getRequiredColumns().size() != 1) {
throw new ISE("WTF?! Expected expression with just one binding");
}

2
processing/src/main/java/org/apache/druid/segment/virtual/SingleStringInputCachingExpressionColumnValueSelector.java
View File

@ -54,7 +54,7 @@ public class SingleStringInputCachingExpressionColumnValueSelector implements Co
)
{
// Verify expression has just one binding.
if (expression.analyzeInputs().getFreeVariables().size() != 1) {
if (expression.analyzeInputs().getRequiredColumns().size() != 1) {
throw new ISE("WTF?! Expected expression with just one binding");
}

2
processing/src/main/java/org/apache/druid/segment/virtual/SingleStringInputDimensionSelector.java
View File

@ -55,7 +55,7 @@ public class SingleStringInputDimensionSelector implements DimensionSelector
)
{
// Verify expression has just one binding.
if (expression.analyzeInputs().getFreeVariables().size() != 1) {
if (expression.analyzeInputs().getRequiredColumns().size() != 1) {
throw new ISE("WTF?! Expected expression with just one binding");
}

48
processing/src/test/java/org/apache/druid/query/MultiValuedDimensionTest.java
View File

@ -47,6 +47,8 @@ import org.apache.druid.query.groupby.GroupByQuery;
import org.apache.druid.query.groupby.GroupByQueryConfig;
import org.apache.druid.query.groupby.GroupByQueryRunnerTest;
import org.apache.druid.query.groupby.GroupByQueryRunnerTestHelper;
import org.apache.druid.query.groupby.orderby.DefaultLimitSpec;
import org.apache.druid.query.groupby.orderby.OrderByColumnSpec;
import org.apache.druid.query.groupby.strategy.GroupByStrategySelector;
import org.apache.druid.query.spec.LegacySegmentSpec;
import org.apache.druid.query.topn.TopNQuery;
@ -571,6 +573,52 @@ public class MultiValuedDimensionTest
TestHelper.assertExpectedObjects(expectedResults, result.toList(), "expr-multi-multi-auto-auto");
}
@Test
public void testGroupByExpressionMultiMultiAutoAutoDupeIdentifier()
{
if (config.getDefaultStrategy().equals(GroupByStrategySelector.STRATEGY_V1)) {
expectedException.expect(RuntimeException.class);
expectedException.expectMessage("GroupBy v1 does not support dimension selectors with unknown cardinality.");
}
GroupByQuery query = GroupByQuery
.builder()
.setDataSource("xx")
.setQuerySegmentSpec(new LegacySegmentSpec("1970/3000"))
.setGranularity(Granularities.ALL)
.setDimensions(new DefaultDimensionSpec("texpr", "texpr"))
.setVirtualColumns(
new ExpressionVirtualColumn(
"texpr",
"concat(tags, tags)",
ValueType.STRING,
TestExprMacroTable.INSTANCE
)
)
.setLimitSpec(new DefaultLimitSpec(ImmutableList.of(new OrderByColumnSpec("count", OrderByColumnSpec.Direction.DESCENDING)), 5))
.setAggregatorSpecs(new CountAggregatorFactory("count"))
.setContext(context)
.build();
Sequence<Row> result = helper.runQueryOnSegmentsObjs(
ImmutableList.of(
new QueryableIndexSegment(queryableIndex, SegmentId.dummy("sid1")),
new IncrementalIndexSegment(incrementalIndex, SegmentId.dummy("sid2"))
),
query
);
List<Row> expectedResults = Arrays.asList(
GroupByQueryRunnerTestHelper.createExpectedRow("1970-01-01T00:00:00.000Z", "texpr", "t3t3", "count", 4L),
GroupByQueryRunnerTestHelper.createExpectedRow("1970-01-01T00:00:00.000Z", "texpr", "t5t5", "count", 4L),
GroupByQueryRunnerTestHelper.createExpectedRow("1970-01-01T00:00:00.000Z", "texpr", "t2t1", "count", 2L),
GroupByQueryRunnerTestHelper.createExpectedRow("1970-01-01T00:00:00.000Z", "texpr", "t1t2", "count", 2L),
GroupByQueryRunnerTestHelper.createExpectedRow("1970-01-01T00:00:00.000Z", "texpr", "t7t7", "count", 2L)
);
System.out.println(result.toList());
TestHelper.assertExpectedObjects(expectedResults, result.toList(), "expr-multi-multi-auto-auto-self");
}
@Test
public void testGroupByExpressionMultiMultiAutoAutoWithFilter()
{

2
processing/src/test/java/org/apache/druid/segment/virtual/ExpressionVirtualColumnTest.java
View File

@ -588,7 +588,7 @@ public class ExpressionVirtualColumnTest
Assert.assertEquals(ImmutableList.of("x", "y"), X_PLUS_Y.requiredColumns());
Assert.assertEquals(ImmutableList.of(), CONSTANT_LIKE.requiredColumns());
Assert.assertEquals(ImmutableList.of("z"), Z_LIKE.requiredColumns());
Assert.assertEquals(ImmutableList.of("z", "x"), Z_CONCAT_X.requiredColumns());
Assert.assertEquals(ImmutableList.of("x", "z"), Z_CONCAT_X.requiredColumns());
}
@Test

106
sql/src/test/java/org/apache/druid/sql/calcite/CalciteQueryTest.java
View File

@ -7953,6 +7953,44 @@ public class CalciteQueryTest extends BaseCalciteQueryTest
);
}
@Test
public void testNvlColumns() throws Exception
{
testQuery(
"SELECT NVL(dim2, dim1), COUNT(*) FROM druid.foo GROUP BY NVL(dim2, dim1)\n",
ImmutableList.of(
GroupByQuery.builder()
.setDataSource(CalciteTests.DATASOURCE1)
.setInterval(querySegmentSpec(Filtration.eternity()))
.setGranularity(Granularities.ALL)
.setVirtualColumns(
expressionVirtualColumn(
"v0",
"case_searched(notnull(\"dim2\"),\"dim2\",\"dim1\")",
ValueType.STRING
)
)
.setDimensions(dimensions(new DefaultDimensionSpec("v0", "v0", ValueType.STRING)))
.setAggregatorSpecs(aggregators(new CountAggregatorFactory("a0")))
.setContext(QUERY_CONTEXT_DEFAULT)
.build()
),
NullHandling.replaceWithDefault() ?
ImmutableList.of(
new Object[]{"10.1", 1L},
new Object[]{"2", 1L},
new Object[]{"a", 2L},
new Object[]{"abc", 2L}
) :
ImmutableList.of(
new Object[]{"", 1L},
new Object[]{"10.1", 1L},
new Object[]{"a", 2L},
new Object[]{"abc", 2L}
)
);
}
@Test
public void testMultiValueStringWorksLikeStringGroupBy() throws Exception
{
@ -8069,6 +8107,34 @@ public class CalciteQueryTest extends BaseCalciteQueryTest
);
}
@Test
public void testMultiValueStringWorksLikeStringSelfConcatScan() throws Exception
{
final String nullVal = NullHandling.replaceWithDefault() ? "[\"-lol-\"]" : "[null]";
testQuery(
"SELECT concat(dim3, '-lol-', dim3) FROM druid.numfoo",
ImmutableList.of(
new Druids.ScanQueryBuilder()
.dataSource(CalciteTests.DATASOURCE3)
.intervals(querySegmentSpec(Filtration.eternity()))
.virtualColumns(expressionVirtualColumn("v0", "concat(\"dim3\",'-lol-',\"dim3\")", ValueType.STRING))
.columns(ImmutableList.of("v0"))
.context(QUERY_CONTEXT_DEFAULT)
.resultFormat(ScanQuery.ResultFormat.RESULT_FORMAT_COMPACTED_LIST)
.legacy(false)
.build()
),
ImmutableList.of(
new Object[]{"[\"a-lol-a\",\"a-lol-b\",\"b-lol-a\",\"b-lol-b\"]"},
new Object[]{"[\"b-lol-b\",\"b-lol-c\",\"c-lol-b\",\"c-lol-c\"]"},
new Object[]{"[\"d-lol-d\"]"},
new Object[]{"[\"-lol-\"]"},
new Object[]{nullVal},
new Object[]{nullVal}
)
);
}
@Test
public void testMultiValueStringWorksLikeStringScanWithFilter() throws Exception
{
@ -8093,44 +8159,6 @@ public class CalciteQueryTest extends BaseCalciteQueryTest
);
}
@Test
public void testNvlColumns() throws Exception
{
testQuery(
"SELECT NVL(dim2, dim1), COUNT(*) FROM druid.foo GROUP BY NVL(dim2, dim1)\n",
ImmutableList.of(
GroupByQuery.builder()
.setDataSource(CalciteTests.DATASOURCE1)
.setInterval(querySegmentSpec(Filtration.eternity()))
.setGranularity(Granularities.ALL)
.setVirtualColumns(
expressionVirtualColumn(
"v0",
"case_searched(notnull(\"dim2\"),\"dim2\",\"dim1\")",
ValueType.STRING
)
)
.setDimensions(dimensions(new DefaultDimensionSpec("v0", "v0", ValueType.STRING)))
.setAggregatorSpecs(aggregators(new CountAggregatorFactory("a0")))
.setContext(QUERY_CONTEXT_DEFAULT)
.build()
),
NullHandling.replaceWithDefault() ?
ImmutableList.of(
new Object[]{"10.1", 1L},
new Object[]{"2", 1L},
new Object[]{"a", 2L},
new Object[]{"abc", 2L}
) :
ImmutableList.of(
new Object[]{"", 1L},
new Object[]{"10.1", 1L},
new Object[]{"a", 2L},
new Object[]{"abc", 2L}
)
);
}
@Test
public void testSelectConstantArrayExpressionFromTable() throws Exception
{
@ -8270,7 +8298,6 @@ public class CalciteQueryTest extends BaseCalciteQueryTest
@Test
public void testMultiValueStringSlice() throws Exception
{
final String nullVal = NullHandling.replaceWithDefault() ? "[\"foo\"]" : "[null]";
testQuery(
"SELECT MV_SLICE(dim3, 1) FROM druid.numfoo",
ImmutableList.of(
@ -8295,7 +8322,6 @@ public class CalciteQueryTest extends BaseCalciteQueryTest
);
}
@Test
public void testMultiValueStringLength() throws Exception
{