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Support dimension spec for select query

This commit is contained in:
navis.ryu 2016-01-29 08:52:10 +09:00
parent 47d48e1e67
commit 4d63196535
10 changed files with 317 additions and 35 deletions
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2
docs/content/querying/select-query.md
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@ -28,7 +28,7 @@ There are several main parts to a select query:
|intervals|A JSON Object representing ISO-8601 Intervals. This defines the time ranges to run the query over.|yes|
|descending|Whether to make descending ordered result. Default is `false`(ascending). When this is `true`, page identifier and offsets will be negative value.|no|
|filter|See [Filters](../querying/filters.html)|no|
|dimensions|A String array of dimensions to select. If left empty, all dimensions are returned.|no|
|dimensions|A JSON list of dimensions to select; or see [DimensionSpec](../querying/dimensionspecs.html) for ways to extract dimensions. If left empty, all dimensions are returned.|no|
|metrics|A String array of metrics to select. If left empty, all metrics are returned.|no|
|pagingSpec|A JSON object indicating offsets into different scanned segments. Query results will return a `pagingIdentifiers` value that can be reused in the next query for pagination.|yes|
|context|An additional JSON Object which can be used to specify certain flags.|no|

14
processing/src/main/java/io/druid/query/Druids.java
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@ -1077,7 +1077,7 @@ public class Druids
private Map<String, Object> context;
private DimFilter dimFilter;
private QueryGranularity granularity;
private List<String> dimensions;
private List<DimensionSpec> dimensions;
private List<String> metrics;
private PagingSpec pagingSpec;
@ -1101,9 +1101,7 @@ public class Druids
descending,
dimFilter,
granularity,
dimensions,
metrics,
pagingSpec,
dimensions, metrics, pagingSpec,
context
);
}
@ -1192,12 +1190,18 @@ public class Druids
return this;
}
public SelectQueryBuilder dimensions(List<String> d)
public SelectQueryBuilder dimensionSpecs(List<DimensionSpec> d)
{
dimensions = d;
return this;
}
public SelectQueryBuilder dimensions(List<String> d)
{
dimensions = DefaultDimensionSpec.toSpec(d);
return this;
}
public SelectQueryBuilder metrics(List<String> m)
{
metrics = m;

29
processing/src/main/java/io/druid/query/dimension/DefaultDimensionSpec.java
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@ -21,16 +21,42 @@ package io.druid.query.dimension;
import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.google.common.base.Function;
import com.google.common.collect.Iterables;
import com.google.common.collect.Lists;
import com.metamx.common.StringUtils;
import io.druid.query.extraction.ExtractionFn;
import io.druid.segment.DimensionSelector;
import java.nio.ByteBuffer;
import java.util.Arrays;
import java.util.List;
/**
*/
public class DefaultDimensionSpec implements DimensionSpec
{
public static List<DimensionSpec> toSpec(String... dimensionNames)
{
return toSpec(Arrays.asList(dimensionNames));
}
public static List<DimensionSpec> toSpec(Iterable<String> dimensionNames)
{
return Lists.newArrayList(
Iterables.transform(
dimensionNames, new Function<String, DimensionSpec>()
{
@Override
public DimensionSpec apply(String input)
{
return new DefaultDimensionSpec(input, input);
}
}
)
);
}
private static final byte CACHE_TYPE_ID = 0x0;
private final String dimension;
private final String outputName;
@ -103,7 +129,8 @@ public class DefaultDimensionSpec implements DimensionSpec
public boolean equals(Object o)
{
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
// LegacyDimensionSpec can be equal to DefaultDimensionSpec
if (!(o instanceof DefaultDimensionSpec)) return false;
DefaultDimensionSpec that = (DefaultDimensionSpec) o;

5
processing/src/main/java/io/druid/query/dimension/ExtractionDimensionSpec.java
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@ -57,6 +57,11 @@ public class ExtractionDimensionSpec implements DimensionSpec
this.outputName = outputName == null ? dimension : outputName;
}
public ExtractionDimensionSpec(String dimension, String outputName, ExtractionFn extractionFn)
{
this(dimension, outputName, extractionFn, null);
}
@Override
@JsonProperty
public String getDimension()

30
processing/src/main/java/io/druid/query/select/PagingSpec.java
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@ -90,6 +90,36 @@ public class PagingSpec
return queryCacheKey.array();
}
@Override
public boolean equals(Object o)
{
if (this == o) {
return true;
}
if (!(o instanceof PagingSpec)) {
return false;
}
PagingSpec that = (PagingSpec) o;
if (threshold != that.threshold) {
return false;
}
if (!pagingIdentifiers.equals(that.pagingIdentifiers)) {
return false;
}
return true;
}
@Override
public int hashCode()
{
int result = pagingIdentifiers.hashCode();
result = 31 * result + threshold;
return result;
}
@Override
public String toString()
{

7
processing/src/main/java/io/druid/query/select/SelectQuery.java
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@ -28,6 +28,7 @@ import io.druid.query.BaseQuery;
import io.druid.query.DataSource;
import io.druid.query.Query;
import io.druid.query.Result;
import io.druid.query.dimension.DimensionSpec;
import io.druid.query.filter.DimFilter;
import io.druid.query.spec.QuerySegmentSpec;
@ -41,7 +42,7 @@ public class SelectQuery extends BaseQuery<Result<SelectResultValue>>
{
private final DimFilter dimFilter;
private final QueryGranularity granularity;
private final List<String> dimensions;
private final List<DimensionSpec> dimensions;
private final List<String> metrics;
private final PagingSpec pagingSpec;
@ -52,7 +53,7 @@ public class SelectQuery extends BaseQuery<Result<SelectResultValue>>
@JsonProperty("descending") boolean descending,
@JsonProperty("filter") DimFilter dimFilter,
@JsonProperty("granularity") QueryGranularity granularity,
@JsonProperty("dimensions") List<String> dimensions,
@JsonProperty("dimensions") List<DimensionSpec> dimensions,
@JsonProperty("metrics") List<String> metrics,
@JsonProperty("pagingSpec") PagingSpec pagingSpec,
@JsonProperty("context") Map<String, Object> context
@ -104,7 +105,7 @@ public class SelectQuery extends BaseQuery<Result<SelectResultValue>>
}
@JsonProperty
public List<String> getDimensions()
public List<DimensionSpec> getDimensions()
{
return dimensions;
}

12
processing/src/main/java/io/druid/query/select/SelectQueryEngine.java
View File

@ -27,6 +27,7 @@ import com.metamx.common.guava.Sequence;
import io.druid.query.QueryRunnerHelper;
import io.druid.query.Result;
import io.druid.query.dimension.DefaultDimensionSpec;
import io.druid.query.dimension.DimensionSpec;
import io.druid.segment.Cursor;
import io.druid.segment.DimensionSelector;
import io.druid.segment.LongColumnSelector;
@ -55,9 +56,9 @@ public class SelectQueryEngine
);
}
final Iterable<String> dims;
final Iterable<DimensionSpec> dims;
if (query.getDimensions() == null || query.getDimensions().isEmpty()) {
dims = adapter.getAvailableDimensions();
dims = DefaultDimensionSpec.toSpec(adapter.getAvailableDimensions());
} else {
dims = query.getDimensions();
}
@ -89,10 +90,9 @@ public class SelectQueryEngine
final LongColumnSelector timestampColumnSelector = cursor.makeLongColumnSelector(Column.TIME_COLUMN_NAME);
final Map<String, DimensionSelector> dimSelectors = Maps.newHashMap();
for (String dim : dims) {
// switching to using DimensionSpec for select would allow the use of extractionFn here.
final DimensionSelector dimSelector = cursor.makeDimensionSelector(new DefaultDimensionSpec(dim, dim));
dimSelectors.put(dim, dimSelector);
for (DimensionSpec dim : dims) {
final DimensionSelector dimSelector = cursor.makeDimensionSelector(dim);
dimSelectors.put(dim.getOutputName(), dimSelector);
}
final Map<String, ObjectColumnSelector> metSelectors = Maps.newHashMap();

14
processing/src/main/java/io/druid/query/select/SelectQueryQueryToolChest.java
View File

@ -40,11 +40,13 @@ import io.druid.query.Result;
import io.druid.query.ResultGranularTimestampComparator;
import io.druid.query.ResultMergeQueryRunner;
import io.druid.query.aggregation.MetricManipulationFn;
import io.druid.query.dimension.DimensionSpec;
import io.druid.query.filter.DimFilter;
import org.joda.time.DateTime;
import java.nio.ByteBuffer;
import java.util.Arrays;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
@ -138,16 +140,16 @@ public class SelectQueryQueryToolChest extends QueryToolChest<Result<SelectResul
final byte[] filterBytes = dimFilter == null ? new byte[]{} : dimFilter.getCacheKey();
final byte[] granularityBytes = query.getGranularity().cacheKey();
final Set<String> dimensions = Sets.newTreeSet();
if (query.getDimensions() != null) {
dimensions.addAll(query.getDimensions());
List<DimensionSpec> dimensionSpecs = query.getDimensions();
if (dimensionSpecs == null) {
dimensionSpecs = Collections.emptyList();
}
final byte[][] dimensionsBytes = new byte[dimensions.size()][];
final byte[][] dimensionsBytes = new byte[dimensionSpecs.size()][];
int dimensionsBytesSize = 0;
int index = 0;
for (String dimension : dimensions) {
dimensionsBytes[index] = StringUtils.toUtf8(dimension);
for (DimensionSpec dimension : dimensionSpecs) {
dimensionsBytes[index] = dimension.getCacheKey();
dimensionsBytesSize += dimensionsBytes[index].length;
++index;
}

147
processing/src/test/java/io/druid/query/select/SelectQueryRunnerTest.java
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@ -32,6 +32,11 @@ import io.druid.query.QueryRunner;
import io.druid.query.QueryRunnerTestHelper;
import io.druid.query.Result;
import io.druid.query.TableDataSource;
import io.druid.query.dimension.DefaultDimensionSpec;
import io.druid.query.dimension.DimensionSpec;
import io.druid.query.dimension.ExtractionDimensionSpec;
import io.druid.query.extraction.LookupExtractionFn;
import io.druid.query.extraction.MapLookupExtractor;
import io.druid.query.filter.AndDimFilter;
import io.druid.query.filter.DimFilter;
import io.druid.query.filter.SelectorDimFilter;
@ -130,7 +135,7 @@ public class SelectQueryRunnerTest
descending,
null,
QueryRunnerTestHelper.allGran,
Arrays.<String>asList(),
DefaultDimensionSpec.toSpec(Arrays.<String>asList()),
Arrays.<String>asList(),
new PagingSpec(null, 3),
null
@ -150,6 +155,134 @@ public class SelectQueryRunnerTest
verify(expectedResults, results);
}
@Test
public void testFullOnSelectWithDimensionSpec()
{
Map<String, String> map = new HashMap<>();
map.put("automotive", "automotive0");
map.put("business", "business0");
map.put("entertainment", "entertainment0");
map.put("health", "health0");
map.put("mezzanine", "mezzanine0");
map.put("news", "news0");
map.put("premium", "premium0");
map.put("technology", "technology0");
map.put("travel", "travel0");
SelectQuery query = new SelectQuery(
new TableDataSource(QueryRunnerTestHelper.dataSource),
QueryRunnerTestHelper.fullOnInterval,
descending,
null,
QueryRunnerTestHelper.allGran,
Arrays.<DimensionSpec>asList(
new DefaultDimensionSpec(QueryRunnerTestHelper.marketDimension, "mar"),
new ExtractionDimensionSpec(
QueryRunnerTestHelper.qualityDimension,
"qual",
new LookupExtractionFn(new MapLookupExtractor(map, true), false, null, true, false)
),
new DefaultDimensionSpec(QueryRunnerTestHelper.placementDimension, "place")
), Lists.<String>newArrayList(), new PagingSpec(null, 3),
null
);
HashMap<String, Object> context = new HashMap<String, Object>();
Iterable<Result<SelectResultValue>> results = Sequences.toList(
runner.run(query, context),
Lists.<Result<SelectResultValue>>newArrayList()
);
List<Result<SelectResultValue>> expectedResultsAsc = Arrays.asList(
new Result<SelectResultValue>(
new DateTime("2011-01-12T00:00:00.000Z"),
new SelectResultValue(
ImmutableMap.of(QueryRunnerTestHelper.segmentId, 2),
Arrays.asList(
new EventHolder(
QueryRunnerTestHelper.segmentId,
0,
new ImmutableMap.Builder<String, Object>()
.put(EventHolder.timestampKey, new DateTime("2011-01-12T00:00:00.000Z"))
.put("mar", "spot")
.put("qual", "automotive0")
.put("place", "preferred")
.put(QueryRunnerTestHelper.indexMetric, 100.000000F)
.build()
),
new EventHolder(
QueryRunnerTestHelper.segmentId,
1,
new ImmutableMap.Builder<String, Object>()
.put(EventHolder.timestampKey, new DateTime("2011-01-12T00:00:00.000Z"))
.put("mar", "spot")
.put("qual", "business0")
.put("place", "preferred")
.put(QueryRunnerTestHelper.indexMetric, 100.000000F)
.build()
),
new EventHolder(
QueryRunnerTestHelper.segmentId,
2,
new ImmutableMap.Builder<String, Object>()
.put(EventHolder.timestampKey, new DateTime("2011-01-12T00:00:00.000Z"))
.put("mar", "spot")
.put("qual", "entertainment0")
.put("place", "preferred")
.put(QueryRunnerTestHelper.indexMetric, 100.000000F)
.build()
)
)
)
)
);
List<Result<SelectResultValue>> expectedResultsDsc = Arrays.asList(
new Result<SelectResultValue>(
new DateTime("2011-01-12T00:00:00.000Z"),
new SelectResultValue(
ImmutableMap.of(QueryRunnerTestHelper.segmentId, -3),
Arrays.asList(
new EventHolder(
QueryRunnerTestHelper.segmentId,
-1,
new ImmutableMap.Builder<String, Object>()
.put(EventHolder.timestampKey, new DateTime("2011-04-15T00:00:00.000Z"))
.put("mar", "upfront")
.put("qual", "premium0")
.put("place", "preferred")
.put(QueryRunnerTestHelper.indexMetric, 780.27197265625F)
.build()
),
new EventHolder(
QueryRunnerTestHelper.segmentId,
-2,
new ImmutableMap.Builder<String, Object>()
.put(EventHolder.timestampKey, new DateTime("2011-04-15T00:00:00.000Z"))
.put("mar", "upfront")
.put("qual", "mezzanine0")
.put("place", "preferred")
.put(QueryRunnerTestHelper.indexMetric, 962.731201171875F)
.build()
),
new EventHolder(
QueryRunnerTestHelper.segmentId,
-3,
new ImmutableMap.Builder<String, Object>()
.put(EventHolder.timestampKey, new DateTime("2011-04-15T00:00:00.000Z"))
.put("mar", "total_market")
.put("qual", "premium0")
.put("place", "preferred")
.put(QueryRunnerTestHelper.indexMetric, 1029.0570068359375F)
.build()
)
)
)
)
);
verify(descending ? expectedResultsDsc : expectedResultsAsc, results);
}
@Test
public void testSelectWithDimsAndMets()
{
@ -159,7 +292,7 @@ public class SelectQueryRunnerTest
descending,
null,
QueryRunnerTestHelper.allGran,
Arrays.asList(QueryRunnerTestHelper.marketDimension),
DefaultDimensionSpec.toSpec(Arrays.asList(QueryRunnerTestHelper.marketDimension)),
Arrays.asList(QueryRunnerTestHelper.indexMetric),
new PagingSpec(null, 3),
null
@ -198,7 +331,7 @@ public class SelectQueryRunnerTest
descending,
null,
QueryRunnerTestHelper.allGran,
Arrays.asList(QueryRunnerTestHelper.qualityDimension),
DefaultDimensionSpec.toSpec(Arrays.asList(QueryRunnerTestHelper.qualityDimension)),
Arrays.asList(QueryRunnerTestHelper.indexMetric),
new PagingSpec(toPagingIdentifier(3, descending), 3),
null
@ -236,7 +369,7 @@ public class SelectQueryRunnerTest
descending,
new SelectorDimFilter(QueryRunnerTestHelper.marketDimension, "spot"),
QueryRunnerTestHelper.dayGran,
Lists.<String>newArrayList(QueryRunnerTestHelper.qualityDimension),
DefaultDimensionSpec.toSpec(Lists.<String>newArrayList(QueryRunnerTestHelper.qualityDimension)),
Lists.<String>newArrayList(QueryRunnerTestHelper.indexMetric),
new PagingSpec(toPagingIdentifier(param[0], descending), param[1]),
null
@ -305,9 +438,7 @@ public class SelectQueryRunnerTest
)
),
QueryRunnerTestHelper.allGran,
Lists.<String>newArrayList(),
Lists.<String>newArrayList(),
new PagingSpec(null, 3),
DefaultDimensionSpec.toSpec(Lists.<String>newArrayList()), Lists.<String>newArrayList(), new PagingSpec(null, 3),
null
);
@ -338,7 +469,7 @@ public class SelectQueryRunnerTest
descending,
null,
QueryRunnerTestHelper.allGran,
Lists.<String>newArrayList("foo"),
DefaultDimensionSpec.toSpec(Lists.<String>newArrayList("foo")),
Lists.<String>newArrayList("foo2"),
new PagingSpec(null, 3),
null

82
processing/src/test/java/io/druid/query/select/SelectQuerySpecTest.java Normal file
View File

@ -0,0 +1,82 @@
/*
* Licensed to Metamarkets Group Inc. (Metamarkets) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. Metamarkets licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package io.druid.query.select;
import com.fasterxml.jackson.databind.ObjectMapper;
import io.druid.jackson.DefaultObjectMapper;
import io.druid.query.QueryRunnerTestHelper;
import io.druid.query.TableDataSource;
import io.druid.query.dimension.DefaultDimensionSpec;
import io.druid.query.spec.LegacySegmentSpec;
import org.joda.time.Interval;
import org.junit.Assert;
import org.junit.Test;
import java.util.Arrays;
/**
*/
public class SelectQuerySpecTest
{
private static final ObjectMapper jsonMapper = new DefaultObjectMapper();
@Test
public void testSerializationLegacyString() throws Exception
{
String legacy =
"{\"queryType\":\"select\",\"dataSource\":{\"type\":\"table\",\"name\":\"testing\"},"
+ "\"intervals\":{\"type\":\"LegacySegmentSpec\",\"intervals\":[\"2011-01-12T00:00:00.000Z/2011-01-14T00:00:00.000Z\"]},"
+ "\"descending\":true,"
+ "\"filter\":null,"
+ "\"granularity\":{\"type\":\"all\"},"
+ "\"dimensions\":[\"market\",\"quality\"],"
+ "\"metrics\":[\"index\"],"
+ "\"pagingSpec\":{\"pagingIdentifiers\":{},\"threshold\":3},"
+ "\"context\":null}";
String current =
"{\"queryType\":\"select\",\"dataSource\":{\"type\":\"table\",\"name\":\"testing\"},"
+ "\"intervals\":{\"type\":\"LegacySegmentSpec\",\"intervals\":[\"2011-01-12T00:00:00.000Z/2011-01-14T00:00:00.000Z\"]},"
+ "\"descending\":true,"
+ "\"filter\":null,"
+ "\"granularity\":{\"type\":\"all\"},"
+ "\"dimensions\":[{\"type\":\"default\",\"dimension\":\"market\",\"outputName\":\"market\"},{\"type\":\"default\",\"dimension\":\"quality\",\"outputName\":\"quality\"}],"
+ "\"metrics\":[\"index\"],"
+ "\"pagingSpec\":{\"pagingIdentifiers\":{},\"threshold\":3},"
+ "\"context\":null}";
SelectQuery query = new SelectQuery(
new TableDataSource(QueryRunnerTestHelper.dataSource),
new LegacySegmentSpec(new Interval("2011-01-12/2011-01-14")),
true,
null,
QueryRunnerTestHelper.allGran,
DefaultDimensionSpec.toSpec(Arrays.<String>asList("market", "quality")),
Arrays.<String>asList("index"),
new PagingSpec(null, 3),
null
);
String actual = jsonMapper.writeValueAsString(query);
Assert.assertEquals(current, actual);
Assert.assertEquals(query, jsonMapper.readValue(actual, SelectQuery.class));
Assert.assertEquals(query, jsonMapper.readValue(legacy, SelectQuery.class));
}
}