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/*
* 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 static org.apache.solr.update.processor.FieldMutatingUpdateProcessor.SELECT_NO_FIELDS;
import static org.apache.solr.update.processor.FieldValueMutatingUpdateProcessor.valueMutator;
import org.apache.solr.common.util.NamedList;
import org.apache.solr.core.SolrCore;
import org.apache.solr.request.SolrQueryRequest;
import org.apache.solr.response.SolrQueryResponse;
import org.apache.solr.update.processor.FieldMutatingUpdateProcessor.FieldNameSelector;
/**
* Replaces any CharSequence values found in fields matching the specified conditions with the
* lengths of those CharSequences (as an Integer).
*
* By default, this processor matches no fields.
*
*
For example, with the configuration listed below any documents containing String values (such
* as "abcdef
" or "xyz
") in a field declared in the schema using
* IntPointField
or LongPointField
would have those Strings replaced with the
* length of those fields as an Integer (ie: 6
and 3
respectively)
*
*
* <processor class="solr.FieldLengthUpdateProcessorFactory">
* <arr name="typeClass">
* <str>solr.IntPointField</str>
* <str>solr.LongPointField</str>
* </arr>
* </processor>
*
* @since 4.0.0
*/
public final class FieldLengthUpdateProcessorFactory extends FieldMutatingUpdateProcessorFactory {
@Override
public void init(NamedList args) {
// no length specific init args
super.init(args);
}
@Override
public FieldNameSelector getDefaultSelector(final SolrCore core) {
return SELECT_NO_FIELDS;
}
@Override
public UpdateRequestProcessor getInstance(
SolrQueryRequest req, SolrQueryResponse rsp, UpdateRequestProcessor next) {
return valueMutator(
getSelector(),
next,
src -> {
if (src instanceof CharSequence) {
return ((CharSequence) src).length();
}
return src;
});
}
}