org.elasticsearch.search.aggregations.support.bytes.ScriptBytesValues Maven / Gradle / Ivy
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* 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.bytes;
import com.google.common.collect.Iterators;
import org.apache.lucene.util.BytesRef;
import org.elasticsearch.index.fielddata.BytesValues;
import org.elasticsearch.script.SearchScript;
import org.elasticsearch.search.aggregations.support.ScriptValues;
import java.lang.reflect.Array;
import java.util.Collection;
import java.util.Iterator;
/**
*
*/
public class ScriptBytesValues extends BytesValues implements ScriptValues {
final SearchScript script;
private Iterator iter;
private Object value;
private BytesRef scratch = new BytesRef();
public ScriptBytesValues(SearchScript script) {
super(true); // assume multi-valued
this.script = script;
}
@Override
public SearchScript script() {
return script;
}
@Override
public int setDocument(int docId) {
this.docId = docId;
script.setNextDocId(docId);
value = script.run();
if (value == null) {
iter = Iterators.emptyIterator();
return 0;
}
if (value.getClass().isArray()) {
final int length = Array.getLength(value);
// don't use Arrays.asList because the array may be an array of primitives?
iter = new Iterator