001/*-------------------------------------------------------------------------+
002|                                                                          |
003| Copyright 2005-2011 The ConQAT Project                                   |
004|                                                                          |
005| Licensed under the Apache License, Version 2.0 (the "License");          |
006| you may not use this file except in compliance with the License.         |
007| You may obtain a copy of the License at                                  |
008|                                                                          |
009|    http://www.apache.org/licenses/LICENSE-2.0                            |
010|                                                                          |
011| Unless required by applicable law or agreed to in writing, software      |
012| distributed under the License is distributed on an "AS IS" BASIS,        |
013| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
014| See the License for the specific language governing permissions and      |
015| limitations under the License.                                           |
016+-------------------------------------------------------------------------*/
017package org.conqat.lib.commons.constraint;
018
019/**
020 * Interface of a constraint checking a local property, i.e. one that can be
021 * verified by only seeing one object. A constraint usually should be stateless.
022 * 
023 * @param <T>
024 *            the type of object being checked by the constraint.
025 * 
026 * @author hummelb
027 */
028public interface ILocalConstraint<T> {
029
030        /**
031         * Checks this constraint and throws an exception only if the constraint is
032         * violated for the object.
033         * 
034         * @param object
035         *            the object to be checked by this constraint.
036         * 
037         * @throws ConstraintViolationException
038         *             if the constraint was violated.
039         */
040        void checkLocalConstraint(T object) throws ConstraintViolationException;
041}