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/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch 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 org.elasticsearch.search.aggregations.support;
import com.carrotsearch.hppc.ObjectObjectOpenHashMap;
import org.apache.lucene.index.AtomicReaderContext;
import org.apache.lucene.search.Scorer;
import org.apache.lucene.util.ArrayUtil;
import org.apache.lucene.util.RamUsageEstimator;
import org.elasticsearch.cache.recycler.CacheRecycler;
import org.elasticsearch.cache.recycler.PageCacheRecycler;
import org.elasticsearch.common.lucene.ReaderContextAware;
import org.elasticsearch.common.lucene.ScorerAware;
import org.elasticsearch.index.fielddata.IndexFieldData;
import org.elasticsearch.index.fielddata.IndexGeoPointFieldData;
import org.elasticsearch.index.fielddata.IndexNumericFieldData;
import org.elasticsearch.search.aggregations.AggregationExecutionException;
import org.elasticsearch.search.aggregations.support.bytes.BytesValuesSource;
import org.elasticsearch.search.aggregations.support.geopoints.GeoPointValuesSource;
import org.elasticsearch.search.aggregations.support.numeric.NumericValuesSource;
import org.elasticsearch.search.internal.SearchContext;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
/**
*
*/
@SuppressWarnings({"unchecked", "ForLoopReplaceableByForEach"})
public class AggregationContext implements ReaderContextAware, ScorerAware {
private final SearchContext searchContext;
private ObjectObjectOpenHashMap[] perDepthFieldDataSources = new ObjectObjectOpenHashMap[4];
private List readerAwares = new ArrayList();
private List scorerAwares = new ArrayList();
private AtomicReaderContext reader;
private Scorer scorer;
public AggregationContext(SearchContext searchContext) {
this.searchContext = searchContext;
}
public SearchContext searchContext() {
return searchContext;
}
public CacheRecycler cacheRecycler() {
return searchContext.cacheRecycler();
}
public PageCacheRecycler pageCacheRecycler() {
return searchContext.pageCacheRecycler();
}
public AtomicReaderContext currentReader() {
return reader;
}
public Scorer currentScorer() {
return scorer;
}
public void setNextReader(AtomicReaderContext reader) {
this.reader = reader;
for (ReaderContextAware aware : readerAwares) {
aware.setNextReader(reader);
}
}
public void setScorer(Scorer scorer) {
this.scorer = scorer;
for (ScorerAware scorerAware : scorerAwares) {
scorerAware.setScorer(scorer);
}
}
/** Get a value source given its configuration and the depth of the aggregator in the aggregation tree. */
public VS valuesSource(ValuesSourceConfig config, int depth) {
assert config.valid() : "value source config is invalid - must have either a field context or a script or marked as unmapped";
assert !config.unmapped : "value source should not be created for unmapped fields";
if (perDepthFieldDataSources.length <= depth) {
perDepthFieldDataSources = Arrays.copyOf(perDepthFieldDataSources, ArrayUtil.oversize(1 + depth, RamUsageEstimator.NUM_BYTES_OBJECT_REF));
}
if (perDepthFieldDataSources[depth] == null) {
perDepthFieldDataSources[depth] = new ObjectObjectOpenHashMap();
}
final ObjectObjectOpenHashMap fieldDataSources = perDepthFieldDataSources[depth];
if (config.fieldContext == null) {
if (NumericValuesSource.class.isAssignableFrom(config.valueSourceType)) {
return (VS) numericScript(config);
}
if (BytesValuesSource.class.isAssignableFrom(config.valueSourceType)) {
return (VS) bytesScript(config);
}
throw new AggregationExecutionException("value source of type [" + config.valueSourceType.getSimpleName() + "] is not supported by scripts");
}
if (NumericValuesSource.class.isAssignableFrom(config.valueSourceType)) {
return (VS) numericField(fieldDataSources, config);
}
if (GeoPointValuesSource.class.isAssignableFrom(config.valueSourceType)) {
return (VS) geoPointField(fieldDataSources, config);
}
// falling back to bytes values
return (VS) bytesField(fieldDataSources, config);
}
private NumericValuesSource numericScript(ValuesSourceConfig config) {
setScorerIfNeeded(config.script);
setReaderIfNeeded(config.script);
scorerAwares.add(config.script);
readerAwares.add(config.script);
FieldDataSource.Numeric source = new FieldDataSource.Numeric.Script(config.script, config.scriptValueType);
if (config.ensureUnique || config.ensureSorted) {
source = new FieldDataSource.Numeric.SortedAndUnique(source);
readerAwares.add((ReaderContextAware) source);
}
return new NumericValuesSource(source, config.formatter(), config.parser());
}
private NumericValuesSource numericField(ObjectObjectOpenHashMap fieldDataSources, ValuesSourceConfig config) {
FieldDataSource.Numeric dataSource = (FieldDataSource.Numeric) fieldDataSources.get(config.fieldContext.field());
if (dataSource == null) {
FieldDataSource.MetaData metaData = FieldDataSource.MetaData.load(config.fieldContext.indexFieldData(), searchContext);
dataSource = new FieldDataSource.Numeric.FieldData((IndexNumericFieldData) config.fieldContext.indexFieldData(), metaData);
setReaderIfNeeded((ReaderContextAware) dataSource);
readerAwares.add((ReaderContextAware) dataSource);
fieldDataSources.put(config.fieldContext.field(), dataSource);
}
if (config.script != null) {
setScorerIfNeeded(config.script);
setReaderIfNeeded(config.script);
scorerAwares.add(config.script);
readerAwares.add(config.script);
dataSource = new FieldDataSource.Numeric.WithScript(dataSource, config.script);
if (config.ensureUnique || config.ensureSorted) {
dataSource = new FieldDataSource.Numeric.SortedAndUnique(dataSource);
readerAwares.add((ReaderContextAware) dataSource);
}
}
if (config.needsHashes) {
dataSource.setNeedsHashes(true);
}
return new NumericValuesSource(dataSource, config.formatter(), config.parser());
}
private ValuesSource bytesField(ObjectObjectOpenHashMap fieldDataSources, ValuesSourceConfig config) {
FieldDataSource dataSource = fieldDataSources.get(config.fieldContext.field());
if (dataSource == null) {
final IndexFieldData indexFieldData = config.fieldContext.indexFieldData();
FieldDataSource.MetaData metaData = FieldDataSource.MetaData.load(config.fieldContext.indexFieldData(), searchContext);
if (indexFieldData instanceof IndexFieldData.WithOrdinals) {
dataSource = new FieldDataSource.Bytes.WithOrdinals.FieldData((IndexFieldData.WithOrdinals) indexFieldData, metaData);
} else {
dataSource = new FieldDataSource.Bytes.FieldData(indexFieldData, metaData);
}
setReaderIfNeeded((ReaderContextAware) dataSource);
readerAwares.add((ReaderContextAware) dataSource);
fieldDataSources.put(config.fieldContext.field(), dataSource);
}
if (config.script != null) {
setScorerIfNeeded(config.script);
setReaderIfNeeded(config.script);
scorerAwares.add(config.script);
readerAwares.add(config.script);
dataSource = new FieldDataSource.WithScript(dataSource, config.script);
}
// Even in case we wrap field data, we might still need to wrap for sorting, because the wrapped field data might be
// eg. a numeric field data that doesn't sort according to the byte order. However field data values are unique so no
// need to wrap for uniqueness
if ((config.ensureUnique && !dataSource.metaData().uniqueness().unique()) || config.ensureSorted) {
dataSource = new FieldDataSource.Bytes.SortedAndUnique(dataSource);
readerAwares.add((ReaderContextAware) dataSource);
}
if (config.needsHashes) { // the data source needs hash if at least one consumer needs hashes
dataSource.setNeedsHashes(true);
}
if (dataSource instanceof FieldDataSource.Bytes.WithOrdinals) {
return new BytesValuesSource.WithOrdinals((FieldDataSource.Bytes.WithOrdinals) dataSource);
} else {
return new BytesValuesSource(dataSource);
}
}
private BytesValuesSource bytesScript(ValuesSourceConfig config) {
setScorerIfNeeded(config.script);
setReaderIfNeeded(config.script);
scorerAwares.add(config.script);
readerAwares.add(config.script);
FieldDataSource.Bytes source = new FieldDataSource.Bytes.Script(config.script);
if (config.ensureUnique || config.ensureSorted) {
source = new FieldDataSource.Bytes.SortedAndUnique(source);
readerAwares.add((ReaderContextAware) source);
}
return new BytesValuesSource(source);
}
private GeoPointValuesSource geoPointField(ObjectObjectOpenHashMap fieldDataSources, ValuesSourceConfig config) {
FieldDataSource.GeoPoint dataSource = (FieldDataSource.GeoPoint) fieldDataSources.get(config.fieldContext.field());
if (dataSource == null) {
FieldDataSource.MetaData metaData = FieldDataSource.MetaData.load(config.fieldContext.indexFieldData(), searchContext);
dataSource = new FieldDataSource.GeoPoint((IndexGeoPointFieldData) config.fieldContext.indexFieldData(), metaData);
setReaderIfNeeded(dataSource);
readerAwares.add(dataSource);
fieldDataSources.put(config.fieldContext.field(), dataSource);
}
if (config.needsHashes) {
dataSource.setNeedsHashes(true);
}
return new GeoPointValuesSource(dataSource);
}
public void registerReaderContextAware(ReaderContextAware readerContextAware) {
setReaderIfNeeded(readerContextAware);
readerAwares.add(readerContextAware);
}
public void registerScorerAware(ScorerAware scorerAware) {
setScorerIfNeeded(scorerAware);
scorerAwares.add(scorerAware);
}
private void setReaderIfNeeded(ReaderContextAware readerAware) {
if (reader != null) {
readerAware.setNextReader(reader);
}
}
private void setScorerIfNeeded(ScorerAware scorerAware) {
if (scorer != null) {
scorerAware.setScorer(scorer);
}
}
}
