org.opensearch.ingest.common.LowercaseProcessor Maven / Gradle / Ivy
/*
* SPDX-License-Identifier: Apache-2.0
*
* The OpenSearch Contributors require contributions made to
* this file be licensed under the Apache-2.0 license or a
* compatible open source license.
*/
/*
* 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.
*/
/*
* Modifications Copyright OpenSearch Contributors. See
* GitHub history for details.
*/
package org.opensearch.ingest.common;
import java.util.Locale;
import java.util.Map;
/**
* Processor that converts the content of string fields to lowercase.
* Throws exception is the field is not of type string.
*/
public final class LowercaseProcessor extends AbstractStringProcessor {
public static final String TYPE = "lowercase";
LowercaseProcessor(String processorTag, String description, String field, boolean ignoreMissing, String targetField) {
super(processorTag, description, ignoreMissing, targetField, field);
}
public static String apply(String value) {
return value.toLowerCase(Locale.ROOT);
}
@Override
protected String process(String value) {
return apply(value);
}
@Override
public String getType() {
return TYPE;
}
public static final class Factory extends AbstractStringProcessor.Factory {
public Factory() {
super(TYPE);
}
@Override
protected LowercaseProcessor newProcessor(
String tag,
String description,
Map config,
String field,
boolean ignoreMissing,
String targetField
) {
return new LowercaseProcessor(tag, description, field, ignoreMissing, targetField);
}
}
}