org.apache.openjpa.jdbc.kernel.exps.Sum Maven / Gradle / Ivy
/*
* 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.jdbc.kernel.exps;
import org.apache.openjpa.kernel.Filters;
/**
* Sum.
*
* @author Abe White
*/
class Sum
extends UnaryOp {
/**
* Constructor. Provide the value to operate on.
*/
public Sum(Val val) {
super(val);
}
protected Class getType(Class c) {
Class wrap = Filters.wrap(c);
if (wrap == Integer.class
|| wrap == Short.class
|| wrap == Byte.class)
return long.class;
return c;
}
protected String getOperator() {
return "SUM";
}
public boolean isAggregate() {
return true;
}
}