org.elasticsearch.hadoop.serialization.field.ExtractorUtils Maven / Gradle / Ivy
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* Licensed to Elasticsearch under one or more contributor
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* 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.hadoop.serialization.field;
import org.elasticsearch.hadoop.serialization.bulk.RawJson;
import org.elasticsearch.hadoop.util.StringUtils;
abstract class ExtractorUtils {
static Object extractConstant(String value, boolean autoQuote) {
// check for quote and automatically add them, if needed for non-numbers
if (autoQuote && !value.startsWith("\"") && !value.endsWith("\"")) {
// constant values
if (!("null".equals(value) || "true".equals(value) || "false".equals(value))) {
// try number parsing
if (value.startsWith("-")) {
value = value.substring(1);
}
boolean isNumber = true;
for (int i = 0; i < value.length(); i++) {
if (!Character.isDigit(value.charAt(i))) {
isNumber = false;
break;
}
}
if (!isNumber) {
value = StringUtils.toJsonString(value);
}
}
}
return new RawJson(value);
}
}