org.graylog2.inputs.converters.NumericConverter Maven / Gradle / Ivy
/**
* This file is part of Graylog.
*
* Graylog is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Graylog is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Graylog. If not, see .
*/
package org.graylog2.inputs.converters;
import com.google.common.primitives.Doubles;
import com.google.common.primitives.Ints;
import com.google.common.primitives.Longs;
import org.graylog2.plugin.inputs.Converter;
import java.util.Map;
/**
* @author Lennart Koopmann
*/
public class NumericConverter extends Converter {
public NumericConverter(Map config) {
super(Type.NUMERIC, config);
}
/**
* Attempts to convert the provided string value to a numeric type,
* trying Integer, Long and Double in order until successful.
*/
@Override
public Object convert(String value) {
if (value == null || value.isEmpty()) {
return value;
}
Object result = Ints.tryParse(value);
if (result != null) {
return result;
}
result = Longs.tryParse(value);
if (result != null) {
return result;
}
result = Doubles.tryParse(value);
if (result != null) {
return result;
}
return value;
}
@Override
public boolean buildsMultipleFields() {
return false;
}
}