/**
* 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.zebra.pig.comparator;
import java.io.PrintStream;
import java.util.List;
/**
* Base class for comparator expressions
*/
public abstract class ComparatorExpr {
protected abstract void appendLeafGenerator(List<LeafGenerator> list, int el,
int cel, boolean c, boolean explicitBound);
protected abstract void toString(PrintStream out);
}