org.apache.openjpa.kernel.exps.Abs Maven / Gradle / Ivy
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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.openjpa.kernel.exps;
import java.math.BigDecimal;
import java.math.BigInteger;
import org.apache.openjpa.kernel.Filters;
import serp.util.Numbers;
/**
* Take the absolute value of a number.
*/
class Abs
extends UnaryMathVal {
/**
* Constructor. Provide the number whose absolute value to calculate.
*/
public Abs(Val val) {
super(val);
}
protected Class getType(Class c) {
Class wrap = Filters.wrap(c);
if (wrap == Integer.class
|| wrap == Float.class
|| wrap == Double.class
|| wrap == Long.class
|| wrap == BigDecimal.class
|| wrap == BigInteger.class)
return Filters.unwrap(c);
return int.class;
}
protected Object operate(Object o, Class c) {
c = Filters.wrap(c);
if (c == Integer.class)
return Numbers.valueOf(Math.abs(((Number) o).intValue()));
if (c == Float.class)
return new Float(Math.abs(((Number) o).floatValue()));
if (c == Double.class)
return new Double(Math.abs(((Number) o).doubleValue()));
if (c == Long.class)
return Numbers.valueOf(Math.abs(((Number) o).longValue()));
if (c == BigDecimal.class)
return ((BigDecimal) o).abs();
if (c == BigInteger.class)
return ((BigInteger) o).abs();
// default to int
return Numbers.valueOf(Math.abs(((Number) o).intValue()));
}
}