org.elasticsearch.search.aggregations.support.AggregationContext Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of elasticsearch Show documentation
Show all versions of elasticsearch Show documentation
Elasticsearch subproject :core
/*
* 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 org.apache.lucene.util.BytesRef;
import org.elasticsearch.common.Nullable;
import org.elasticsearch.common.geo.GeoPoint;
import org.elasticsearch.common.geo.GeoUtils;
import org.elasticsearch.common.util.BigArrays;
import org.elasticsearch.index.fielddata.IndexFieldData;
import org.elasticsearch.index.fielddata.IndexGeoPointFieldData;
import org.elasticsearch.index.fielddata.IndexNumericFieldData;
import org.elasticsearch.index.fielddata.IndexOrdinalsFieldData;
import org.elasticsearch.index.fielddata.plain.ParentChildIndexFieldData;
import org.elasticsearch.search.SearchParseException;
import org.elasticsearch.search.aggregations.AggregationExecutionException;
import org.elasticsearch.search.internal.SearchContext;
import org.joda.time.DateTimeZone;
import java.io.IOException;
public class AggregationContext {
private final SearchContext searchContext;
public AggregationContext(SearchContext searchContext) {
this.searchContext = searchContext;
}
public SearchContext searchContext() {
return searchContext;
}
public BigArrays bigArrays() {
return searchContext.bigArrays();
}
/** Get a value source given its configuration. A return value of null indicates that
* no value source could be built. */
@Nullable
public VS valuesSource(ValuesSourceConfig config, SearchContext context) throws IOException {
if (!config.valid()) {
throw new IllegalStateException(
"value source config is invalid; must have either a field context or a script or marked as unwrapped");
}
final VS vs;
if (config.unmapped()) {
if (config.missing() == null) {
// otherwise we will have values because of the missing value
vs = null;
} else if (config.valueSourceType() == ValuesSourceType.NUMERIC) {
vs = (VS) ValuesSource.Numeric.EMPTY;
} else if (config.valueSourceType() == ValuesSourceType.GEOPOINT) {
vs = (VS) ValuesSource.GeoPoint.EMPTY;
} else if (config.valueSourceType() == ValuesSourceType.ANY || config.valueSourceType() == ValuesSourceType.BYTES) {
vs = (VS) ValuesSource.Bytes.WithOrdinals.EMPTY;
} else {
throw new SearchParseException(searchContext, "Can't deal with unmapped ValuesSource type "
+ config.valueSourceType(), null);
}
} else {
vs = originalValuesSource(config);
}
if (config.missing() == null) {
return vs;
}
if (vs instanceof ValuesSource.Bytes) {
final BytesRef missing = new BytesRef(config.missing().toString());
if (vs instanceof ValuesSource.Bytes.WithOrdinals) {
return (VS) MissingValues.replaceMissing((ValuesSource.Bytes.WithOrdinals) vs, missing);
} else {
return (VS) MissingValues.replaceMissing((ValuesSource.Bytes) vs, missing);
}
} else if (vs instanceof ValuesSource.Numeric) {
Number missing = null;
if (config.missing() instanceof Number) {
missing = (Number) config.missing();
} else {
if (config.fieldContext() != null && config.fieldContext().fieldType() != null) {
missing = config.fieldContext().fieldType().docValueFormat(null, DateTimeZone.UTC)
.parseDouble(config.missing().toString(), false, context.getQueryShardContext()::nowInMillis);
} else {
missing = Double.parseDouble(config.missing().toString());
}
}
return (VS) MissingValues.replaceMissing((ValuesSource.Numeric) vs, missing);
} else if (vs instanceof ValuesSource.GeoPoint) {
// TODO: also support the structured formats of geo points
final GeoPoint missing = GeoUtils.parseGeoPoint(config.missing().toString(), new GeoPoint());
return (VS) MissingValues.replaceMissing((ValuesSource.GeoPoint) vs, missing);
} else {
// Should not happen
throw new SearchParseException(searchContext, "Can't apply missing values on a " + vs.getClass(), null);
}
}
/**
* Return the original values source, before we apply `missing`.
*/
private VS originalValuesSource(ValuesSourceConfig config) throws IOException {
if (config.fieldContext() == null) {
if (config.valueSourceType() == ValuesSourceType.NUMERIC) {
return (VS) numericScript(config);
}
if (config.valueSourceType() == ValuesSourceType.BYTES) {
return (VS) bytesScript(config);
}
throw new AggregationExecutionException("value source of type [" + config.valueSourceType().name()
+ "] is not supported by scripts");
}
if (config.valueSourceType() == ValuesSourceType.NUMERIC) {
return (VS) numericField(config);
}
if (config.valueSourceType() == ValuesSourceType.GEOPOINT) {
return (VS) geoPointField(config);
}
// falling back to bytes values
return (VS) bytesField(config);
}
private ValuesSource.Numeric numericScript(ValuesSourceConfig config) throws IOException {
return new ValuesSource.Numeric.Script(config.script(), config.scriptValueType());
}
private ValuesSource.Numeric numericField(ValuesSourceConfig config) throws IOException {
if (!(config.fieldContext().indexFieldData() instanceof IndexNumericFieldData)) {
throw new IllegalArgumentException("Expected numeric type on field [" + config.fieldContext().field() +
"], but got [" + config.fieldContext().fieldType().typeName() + "]");
}
ValuesSource.Numeric dataSource = new ValuesSource.Numeric.FieldData((IndexNumericFieldData)config.fieldContext().indexFieldData());
if (config.script() != null) {
dataSource = new ValuesSource.Numeric.WithScript(dataSource, config.script());
}
return dataSource;
}
private ValuesSource bytesField(ValuesSourceConfig config) throws IOException {
final IndexFieldData indexFieldData = config.fieldContext().indexFieldData();
ValuesSource dataSource;
if (indexFieldData instanceof ParentChildIndexFieldData) {
dataSource = new ValuesSource.Bytes.WithOrdinals.ParentChild((ParentChildIndexFieldData) indexFieldData);
} else if (indexFieldData instanceof IndexOrdinalsFieldData) {
dataSource = new ValuesSource.Bytes.WithOrdinals.FieldData((IndexOrdinalsFieldData) indexFieldData);
} else {
dataSource = new ValuesSource.Bytes.FieldData(indexFieldData);
}
if (config.script() != null) {
dataSource = new ValuesSource.WithScript(dataSource, config.script());
}
return dataSource;
}
private ValuesSource.Bytes bytesScript(ValuesSourceConfig config) throws IOException {
return new ValuesSource.Bytes.Script(config.script());
}
private ValuesSource.GeoPoint geoPointField(ValuesSourceConfig config) throws IOException {
if (!(config.fieldContext().indexFieldData() instanceof IndexGeoPointFieldData)) {
throw new IllegalArgumentException("Expected geo_point type on field [" + config.fieldContext().field() +
"], but got [" + config.fieldContext().fieldType().typeName() + "]");
}
return new ValuesSource.GeoPoint.Fielddata((IndexGeoPointFieldData) config.fieldContext().indexFieldData());
}
}