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Apache Solr (module: core)
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF 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.apache.solr.response.transform;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
import java.util.List;
import java.util.stream.Collectors;
import org.apache.solr.common.SolrDocument;
import org.apache.solr.response.ResultContext;
/** Transform a document before it gets sent out */
public class DocTransformers extends DocTransformer {
final List children = new ArrayList<>();
@Override
public String getName() {
StringBuilder str = new StringBuilder();
str.append("Transformers[");
Iterator iter = children.iterator();
while (iter.hasNext()) {
str.append(iter.next().getName());
if (iter.hasNext()) {
str.append(",");
}
}
str.append("]");
return str.toString();
}
@Override
public Collection getRawFields() {
return children.stream()
.map(DocTransformer::getRawFields)
.flatMap(Collection::stream)
.collect(Collectors.toList());
}
public void addTransformer(DocTransformer a) {
children.add(a);
}
public int size() {
return children.size();
}
public DocTransformer getTransformer(int idx) {
return children.get(idx);
}
@Override
public void setContext(ResultContext context) {
for (DocTransformer a : children) {
a.setContext(context);
}
}
@Override
public void transform(SolrDocument doc, int docid, float score) throws IOException {
for (DocTransformer a : children) {
a.transform(doc, docid, score);
}
}
@Override
public void transform(SolrDocument doc, int docid) throws IOException {
for (DocTransformer a : children) {
a.transform(doc, docid);
}
}
/** Returns true if and only if at least 1 child transformer returns true */
@Override
public boolean needsSolrIndexSearcher() {
for (DocTransformer kid : children) {
if (kid.needsSolrIndexSearcher()) {
return true;
}
}
return false;
}
}