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1   /*
2    * Copyright (C) 2007-2012 Argeo GmbH
3    *
4    * Licensed under the Apache License, Version 2.0 (the "License");
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    *
8    *         http://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS,
12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   * See the License for the specific language governing permissions and
14   * limitations under the License.
15   */
16  package org.argeo.slc.diff;
17  
18  /** Compares objects, eventually using tolerance mechanisms. */
19  public interface Tolerance {
20  	/**
21  	 * Compares objects
22  	 * 
23  	 * @param key
24  	 *            any object used to differentiate the type of data (e.g.
25  	 *            column, path)
26  	 * @param expected
27  	 *            the expected value
28  	 * @param reached
29  	 *            the reached value
30  	 * @return the converted object
31  	 */
32  	public Boolean compare(Object key, Object expected, Object reached);
33  }