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core module for querydsl

There is a newer version: 3.7.4

/*
 * Copyright 2015, The Querydsl Team (http://www.querydsl.com/team)
 * 
 * Licensed 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 com.mysema.query.group;

import com.mysema.query.types.Expression;

/**
 * @author tiwe
 *
 * @param 
 */
class GMax> extends AbstractGroupExpression {

    private static final long serialVersionUID = 3815394663181131511L;

    @SuppressWarnings("unchecked")
    public GMax(Expression expr) {
        super((Class)expr.getType(), expr);
    }

    @Override
    public GroupCollector createGroupCollector() {
        return new GroupCollector() {
            private T max;
            
            @Override
            public void add(T o) {
                if (max != null) {
                    max = o.compareTo(max) > 0 ? o : max;
                } else {
                    max = o;
                }
            }
            @Override
            public T get() {
                return max;
            }                
        };
    }        
}