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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.index.query;
import org.elasticsearch.script.ScriptContext;
import org.elasticsearch.script.SearchScript;
import org.elasticsearch.search.builder.SearchSourceBuilder;
import org.elasticsearch.search.fetch.subphase.DocValueFieldsContext;
import org.elasticsearch.search.fetch.subphase.InnerHitsContext;
import org.elasticsearch.search.internal.SearchContext;
import org.elasticsearch.search.sort.SortAndFormats;
import org.elasticsearch.search.sort.SortBuilder;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import java.util.Optional;
/**
* A builder for {@link InnerHitsContext.InnerHitSubContext}
*/
public abstract class InnerHitContextBuilder {
protected final QueryBuilder query;
protected final InnerHitBuilder innerHitBuilder;
protected final Map<String, InnerHitContextBuilder> children;
protected InnerHitContextBuilder(QueryBuilder query, InnerHitBuilder innerHitBuilder, Map<String, InnerHitContextBuilder> children) {
this.innerHitBuilder = innerHitBuilder;
this.children = children;
this.query = query;
}
public abstract void build(SearchContext parentSearchContext,
InnerHitsContext innerHitsContext) throws IOException;
public static void extractInnerHits(QueryBuilder query, Map<String, InnerHitContextBuilder> innerHitBuilders) {
if (query instanceof AbstractQueryBuilder) {
((AbstractQueryBuilder) query).extractInnerHitBuilders(innerHitBuilders);
} else {
throw new IllegalStateException("provided query builder [" + query.getClass() +
"] class should inherit from AbstractQueryBuilder, but it doesn't");
}
}
protected void setupInnerHitsContext(QueryShardContext queryShardContext,
InnerHitsContext.InnerHitSubContext innerHitsContext) throws IOException {
innerHitsContext.from(innerHitBuilder.getFrom());
innerHitsContext.size(innerHitBuilder.getSize());
innerHitsContext.explain(innerHitBuilder.isExplain());
innerHitsContext.version(innerHitBuilder.isVersion());
innerHitsContext.trackScores(innerHitBuilder.isTrackScores());
if (innerHitBuilder.getStoredFieldsContext() != null) {
innerHitsContext.storedFieldsContext(innerHitBuilder.getStoredFieldsContext());
}
if (innerHitBuilder.getDocValueFields() != null) {
innerHitsContext.docValueFieldsContext(new DocValueFieldsContext(innerHitBuilder.getDocValueFields()));
}
if (innerHitBuilder.getScriptFields() != null) {
for (SearchSourceBuilder.ScriptField field : innerHitBuilder.getScriptFields()) {
SearchScript searchScript = innerHitsContext.getQueryShardContext().getSearchScript(field.script(),
ScriptContext.SEARCH);
innerHitsContext.scriptFields().add(new org.elasticsearch.search.fetch.subphase.ScriptFieldsContext.ScriptField(
field.fieldName(), searchScript, field.ignoreFailure()));
}
}
if (innerHitBuilder.getFetchSourceContext() != null) {
innerHitsContext.fetchSourceContext(innerHitBuilder.getFetchSourceContext() );
}
if (innerHitBuilder.getSorts() != null) {
Optional<SortAndFormats> optionalSort = SortBuilder.buildSort(innerHitBuilder.getSorts(), queryShardContext);
if (optionalSort.isPresent()) {
innerHitsContext.sort(optionalSort.get());
}
}
if (innerHitBuilder.getHighlightBuilder() != null) {
innerHitsContext.highlight(innerHitBuilder.getHighlightBuilder().build(queryShardContext));
}
ParsedQuery parsedQuery = new ParsedQuery(query.toQuery(queryShardContext), queryShardContext.copyNamedQueries());
innerHitsContext.parsedQuery(parsedQuery);
Map<String, InnerHitsContext.InnerHitSubContext> baseChildren =
buildChildInnerHits(innerHitsContext.parentSearchContext(), children);
innerHitsContext.setChildInnerHits(baseChildren);
}
private static Map<String, InnerHitsContext.InnerHitSubContext> buildChildInnerHits(SearchContext parentSearchContext,
Map<String, InnerHitContextBuilder> children) throws IOException {
Map<String, InnerHitsContext.InnerHitSubContext> childrenInnerHits = new HashMap<>();
for (Map.Entry<String, InnerHitContextBuilder> entry : children.entrySet()) {
InnerHitsContext childInnerHitsContext = new InnerHitsContext();
entry.getValue().build(
parentSearchContext, childInnerHitsContext);
if (childInnerHitsContext.getInnerHits() != null) {
childrenInnerHits.putAll(childInnerHitsContext.getInnerHits());
}
}
return childrenInnerHits;
}
}
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