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Percolator module adds capability to index queries and query these queries by specifying documents
/*
* 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.percolator;
import org.elasticsearch.ElasticsearchGenerationException;
import org.elasticsearch.action.support.ToXContentToBytes;
import org.elasticsearch.client.Requests;
import org.elasticsearch.common.bytes.BytesArray;
import org.elasticsearch.common.bytes.BytesReference;
import org.elasticsearch.common.xcontent.ToXContent;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.common.xcontent.XContentFactory;
import org.elasticsearch.common.xcontent.XContentType;
import org.elasticsearch.index.query.QueryBuilder;
import org.elasticsearch.search.aggregations.AggregationBuilder;
import org.elasticsearch.search.aggregations.PipelineAggregationBuilder;
import org.elasticsearch.search.builder.SearchSourceBuilder;
import org.elasticsearch.search.fetch.subphase.highlight.HighlightBuilder;
import org.elasticsearch.search.sort.ScoreSortBuilder;
import org.elasticsearch.search.sort.SortBuilder;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
* Builder to create the percolate request body.
*
* @deprecated Instead use search API with {@link PercolateQueryBuilder}
*/
@Deprecated
public class PercolateSourceBuilder extends ToXContentToBytes {
private DocBuilder docBuilder;
private QueryBuilder queryBuilder;
private Integer size;
private List> sorts;
private Boolean trackScores;
private HighlightBuilder highlightBuilder;
private List aggregationBuilders;
private List pipelineAggregationBuilders;
/**
* Sets the document to run the percolate queries against.
*/
public PercolateSourceBuilder setDoc(DocBuilder docBuilder) {
this.docBuilder = docBuilder;
return this;
}
/**
* Sets a query to reduce the number of percolate queries to be evaluated and score the queries that match based
* on this query.
*/
public PercolateSourceBuilder setQueryBuilder(QueryBuilder queryBuilder) {
this.queryBuilder = queryBuilder;
return this;
}
/**
* Limits the maximum number of percolate query matches to be returned.
*/
public PercolateSourceBuilder setSize(int size) {
this.size = size;
return this;
}
/**
* Similar as {@link #setTrackScores(boolean)}, but whether to sort by the score descending.
*/
public PercolateSourceBuilder setSort(boolean sort) {
if (sort) {
addSort(new ScoreSortBuilder());
} else {
this.sorts = null;
}
return this;
}
/**
* Adds a sort builder. Only sorting by score desc is supported.
*
* By default the matching percolator queries are returned in an undefined order.
*/
public PercolateSourceBuilder addSort(SortBuilder sort) {
if (sorts == null) {
sorts = new ArrayList<>();
}
sorts.add(sort);
return this;
}
/**
* Whether to compute a score for each match and include it in the response. The score is based on
* {@link #setQueryBuilder(QueryBuilder)}.
*/
public PercolateSourceBuilder setTrackScores(boolean trackScores) {
this.trackScores = trackScores;
return this;
}
/**
* Enables highlighting for the percolate document. Per matched percolate query highlight the percolate document.
*/
public PercolateSourceBuilder setHighlightBuilder(HighlightBuilder highlightBuilder) {
this.highlightBuilder = highlightBuilder;
return this;
}
/**
* Add an aggregation definition.
*/
public PercolateSourceBuilder addAggregation(AggregationBuilder aggregationBuilder) {
if (aggregationBuilders == null) {
aggregationBuilders = new ArrayList<>();
}
aggregationBuilders.add(aggregationBuilder);
return this;
}
/**
* Add an aggregation definition.
*/
public PercolateSourceBuilder addAggregation(PipelineAggregationBuilder aggregationBuilder) {
if (pipelineAggregationBuilders == null) {
pipelineAggregationBuilders = new ArrayList<>();
}
pipelineAggregationBuilders.add(aggregationBuilder);
return this;
}
@Override
public XContentBuilder toXContent(XContentBuilder builder, Params params) throws IOException {
builder.startObject();
if (docBuilder != null) {
docBuilder.toXContent(builder, params);
}
if (queryBuilder != null) {
builder.field("query");
queryBuilder.toXContent(builder, params);
}
if (size != null) {
builder.field("size", size);
}
if (sorts != null) {
builder.startArray("sort");
for (SortBuilder sort : sorts) {
sort.toXContent(builder, params);
}
builder.endArray();
}
if (trackScores != null) {
builder.field("track_scores", trackScores);
}
if (highlightBuilder != null) {
builder.field(SearchSourceBuilder.HIGHLIGHT_FIELD.getPreferredName(), highlightBuilder);
}
if (aggregationBuilders != null || pipelineAggregationBuilders != null) {
builder.field("aggregations");
builder.startObject();
if (aggregationBuilders != null) {
for (AggregationBuilder aggregation : aggregationBuilders) {
aggregation.toXContent(builder, params);
}
}
if (pipelineAggregationBuilders != null) {
for (PipelineAggregationBuilder aggregation : pipelineAggregationBuilders) {
aggregation.toXContent(builder, params);
}
}
builder.endObject();
}
builder.endObject();
return builder;
}
/**
* @return A new {@link DocBuilder} instance.
*/
public static DocBuilder docBuilder() {
return new DocBuilder();
}
/**
* A builder for defining the document to be percolated in various ways.
*/
public static class DocBuilder implements ToXContent {
private BytesReference doc;
/**
* Sets the document to be percolated.
*/
public DocBuilder setDoc(BytesReference doc) {
this.doc = doc;
return this;
}
/**
* Sets the document to be percolated.
*/
public DocBuilder setDoc(String field, Object value) {
Map values = new HashMap<>(2);
values.put(field, value);
setDoc(values);
return this;
}
/**
* Sets the document to be percolated.
*/
public DocBuilder setDoc(String doc) {
this.doc = new BytesArray(doc);
return this;
}
/**
* Sets the document to be percolated.
*/
public DocBuilder setDoc(XContentBuilder doc) {
this.doc = doc.bytes();
return this;
}
/**
* Sets the document to be percolated.
*/
public DocBuilder setDoc(Map doc) {
return setDoc(doc, Requests.CONTENT_TYPE);
}
@SuppressWarnings("unchecked")
public DocBuilder setDoc(Map doc, XContentType contentType) {
try {
return setDoc(XContentFactory.contentBuilder(contentType).map(doc));
} catch (IOException e) {
throw new ElasticsearchGenerationException("Failed to generate [" + doc + "]", e);
}
}
@Override
public XContentBuilder toXContent(XContentBuilder builder, Params params) throws IOException {
return builder.rawField("doc", doc);
}
}
}
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