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* 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.
*/
package org.elasticsearch.ingest.common;
import org.elasticsearch.ingest.AbstractProcessor;
import org.elasticsearch.ingest.ConfigurationUtils;
import org.elasticsearch.ingest.IngestDocument;
import org.elasticsearch.ingest.Processor;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Map;
/**
* Processor that splits fields content into different items based on the occurrence of a specified separator.
* New field value will be an array containing all of the different extracted items.
* Throws exception if the field is null or a type other than string.
*/
public final class SplitProcessor extends AbstractProcessor {
public static final String TYPE = "split";
private final String field;
private final String separator;
private final boolean ignoreMissing;
SplitProcessor(String tag, String field, String separator, boolean ignoreMissing) {
super(tag);
this.field = field;
this.separator = separator;
this.ignoreMissing = ignoreMissing;
}
String getField() {
return field;
}
String getSeparator() {
return separator;
}
boolean isIgnoreMissing() {
return ignoreMissing;
}
@Override
public void execute(IngestDocument document) {
String oldVal = document.getFieldValue(field, String.class, ignoreMissing);
if (oldVal == null && ignoreMissing) {
return;
} else if (oldVal == null) {
throw new IllegalArgumentException("field [" + field + "] is null, cannot split.");
}
String[] strings = oldVal.split(separator);
List<String> splitList = new ArrayList<>(strings.length);
Collections.addAll(splitList, strings);
document.setFieldValue(field, splitList);
}
@Override
public String getType() {
return TYPE;
}
public static class Factory implements Processor.Factory {
@Override
public SplitProcessor create(Map<String, Processor.Factory> registry, String processorTag,
Map<String, Object> config) throws Exception {
String field = ConfigurationUtils.readStringProperty(TYPE, processorTag, config, "field");
boolean ignoreMissing = ConfigurationUtils.readBooleanProperty(TYPE, processorTag, config, "ignore_missing", false);
return new SplitProcessor(processorTag, field,
ConfigurationUtils.readStringProperty(TYPE, processorTag, config, "separator"), ignoreMissing);
}
}
}