001    /*--------------------------------------------------------------------------+
002    $Id: SimulinkElementNameConstraint.java 26285 2010-02-18 11:22:54Z juergens $
003    |                                                                          |
004    | Copyright 2005-2010 Technische Universitaet Muenchen                     |
005    |                                                                          |
006    | Licensed under the Apache License, Version 2.0 (the "License");          |
007    | you may not use this file except in compliance with the License.         |
008    | You may obtain a copy of the License at                                  |
009    |                                                                          |
010    |    http://www.apache.org/licenses/LICENSE-2.0                            |
011    |                                                                          |
012    | Unless required by applicable law or agreed to in writing, software      |
013    | distributed under the License is distributed on an "AS IS" BASIS,        |
014    | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
015    | See the License for the specific language governing permissions and      |
016    | limitations under the License.                                           |
017    +--------------------------------------------------------------------------*/
018    package edu.tum.cs.simulink.constraints;
019    
020    import edu.tum.cs.commons.constraint.ConstraintViolationException;
021    import edu.tum.cs.commons.constraint.ILocalConstraint;
022    import edu.tum.cs.simulink.model.SimulinkElementBase;
023    
024    /**
025     * This constraint checks if a Simulink element has a defined name and ensures
026     * that the name does not start or end with a slash. This is a mandatory
027     * constraint.
028     * 
029     * @author deissenb
030     * @author $Author: juergens $
031     * @version $Rev: 26285 $
032     * @levd.rating GREEN Hash: 21131D262A9472165AD27FB43B08D542
033     */
034    public class SimulinkElementNameConstraint implements
035                    ILocalConstraint<SimulinkElementBase> {
036    
037            /** See class comment. */
038            public void checkLocalConstraint(SimulinkElementBase element)
039                            throws ConstraintViolationException {
040                    String name = element.getName();
041                    if (name == null || name.length() == 0) {
042                            throw new ConstraintViolationException("Element " + element
043                                            + " has no name.", element);
044                    }
045                    if (name.startsWith("/") || name.endsWith("/")) {
046                            throw new ConstraintViolationException("Name of element " + element
047                                            + " starts or ends with a slash.", element);
048                    }
049            }
050    }