/*
 * Copyright (C) 2010 Mathieu Baudier <mbaudier@argeo.org>
 *
 * 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 org.argeo.slc.diff;

/** Compares objects, eventually using tolerance mechanisms. */
public interface Tolerance {
	/**
	 * Compares objects
	 * 
	 * @param key
	 *            any object used to differentiate the type of data (e.g.
	 *            column, path)
	 * @param expected
	 *            the expected value
	 * @param reached
	 *            the reached value
	 * @return the converted object
	 */
	public Boolean compare(Object key, Object expected, Object reached);
}