org.apache.solr.update.processor.TrimFieldUpdateProcessorFactory Maven / Gradle / Ivy
/*
* 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.update.processor;
import org.apache.solr.common.util.NamedList;
import org.apache.solr.request.SolrQueryRequest;
import org.apache.solr.response.SolrQueryResponse;
import static org.apache.solr.update.processor.FieldValueMutatingUpdateProcessor.valueMutator;
/**
* Trims leading and trailing whitespace from any CharSequence values
* found in fields matching the specified conditions and returns the
* resulting String.
*
* By default this processor matches all fields
*
*
* For example, with the configuration listed all String field values
* will have leading and trailing spaces removed except for fields whose
* named ends with "_literal".
*
*
* <processor class="solr.TrimFieldUpdateProcessorFactory">
* <lst name="exclude">
* <str name="fieldRegex">.*_literal</str>
* </lst>
* </processor>
* @since 4.0.0
*/
public final class TrimFieldUpdateProcessorFactory extends FieldMutatingUpdateProcessorFactory {
@SuppressWarnings("unchecked")
@Override
public void init(NamedList args) {
// no trim specific init args
super.init(args);
}
@Override
public UpdateRequestProcessor getInstance(SolrQueryRequest req,
SolrQueryResponse rsp,
UpdateRequestProcessor next) {
return valueMutator(getSelector(), next, src -> {
if (src instanceof CharSequence) {
return src.toString().trim();
}
return src;
});
}
}