org.apache.hadoop.hive.ql.udf.UDFOPNegative.java Source code

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Here is the source code for org.apache.hadoop.hive.ql.udf.UDFOPNegative.java

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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.hadoop.hive.ql.udf;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.hive.ql.exec.UDF;

public class UDFOPNegative implements UDF {

    private static Log LOG = LogFactory.getLog(UDFOPNegative.class.getName());

    public UDFOPNegative() {
    }

    public Byte evaluate(Byte a) {
        if (a == null)
            return null;

        Byte r = Byte.valueOf((byte) -a.byteValue());
        return r;
    }

    public Integer evaluate(Integer a) {
        if (a == null)
            return null;

        Integer r = Integer.valueOf(-a.intValue());
        return r;
    }

    public Long evaluate(Long a) {
        if (a == null)
            return null;

        Long r = Long.valueOf(-a.longValue());
        return r;
    }

    public Float evaluate(Float a) {
        if (a == null)
            return null;

        Float r = Float.valueOf(-a.floatValue());
        return r;
    }

    public Double evaluate(Double a) {
        if (a == null)
            return null;

        Double r = Double.valueOf(-a.doubleValue());
        return r;
    }

}