org.elasticsearch.index.query.WrapperQueryBuilder Maven / Gradle / Ivy
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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 com.google.common.base.Charsets;
import org.elasticsearch.common.bytes.BytesReference;
import org.elasticsearch.common.xcontent.XContentBuilder;
import java.io.IOException;
/**
* A Query builder which allows building a query given JSON string or binary data provided as input. This is useful when you want
* to use the Java Builder API but still have JSON query strings at hand that you want to combine with other
* query builders.
*
* Example usage in a boolean query :
*
*
* BoolQueryBuilder bool = new BoolQueryBuilder();
* bool.must(new WrapperQueryBuilder("{\"term\": {\"field\":\"value\"}}");
* bool.must(new TermQueryBuilder("field2","value2");
*
*
*/
public class WrapperQueryBuilder extends QueryBuilder {
private final byte[] source;
private final int offset;
private final int length;
/**
* Creates a query builder given a query provided as a string
*/
public WrapperQueryBuilder(String source) {
this.source = source.getBytes(Charsets.UTF_8);
this.offset = 0;
this.length = this.source.length;
}
/**
* Creates a query builder given a query provided as a bytes array
*/
public WrapperQueryBuilder(byte[] source, int offset, int length) {
this.source = source;
this.offset = offset;
this.length = length;
}
/**
* Creates a query builder given a query provided as a {@link BytesReference}
*/
public WrapperQueryBuilder(BytesReference source) {
this.source = source.array();
this.offset = source.arrayOffset();
this.length = source.length();
}
@Override
protected void doXContent(XContentBuilder builder, Params params) throws IOException {
builder.startObject(WrapperQueryParser.NAME);
builder.field("query", source, offset, length);
builder.endObject();
}
}