KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > org > sample > registry > model > impl > FindByNameAndTypeVisitor


1 /*
2  * The contents of this file are subject to the terms of the Common Development
3  * and Distribution License (the License). You may not use this file except in
4  * compliance with the License.
5  *
6  * You can obtain a copy of the License at http://www.netbeans.org/cddl.html
7  * or http://www.netbeans.org/cddl.txt.
8  *
9  * When distributing Covered Code, include this CDDL Header Notice in each file
10  * and include the License file at http://www.netbeans.org/cddl.txt.
11  * If applicable, add the following below the CDDL Header, with the fields
12  * enclosed by brackets [] replaced by your own identifying information:
13  * "Portions Copyrighted [year] [name of copyright owner]"
14  *
15  * The Original Software is NetBeans. The Initial Developer of the Original
16  * Software is Sun Microsystems, Inc. Portions Copyright 1997-2006 Sun
17  * Microsystems, Inc. All Rights Reserved.
18  */

19 package org.sample.registry.model.impl;
20
21 import org.sample.registry.model.ReferenceableRegistryComponent;
22 import org.sample.registry.model.RegistryCommon;
23 import org.sample.registry.model.RegistryVisitor;
24 import org.sample.registry.model.Service;
25
26 /**
27  * This visitor assume only components of ServiceType and Service has unique name
28  * among themselvelves within the same document.
29  */

30
31 public class FindByNameAndTypeVisitor<T extends ReferenceableRegistryComponent>
32         extends RegistryVisitor.Deep {
33     
34     private String JavaDoc name;
35     private Class JavaDoc<T> type;
36     private T found;
37     
38     public FindByNameAndTypeVisitor() {
39     }
40
41     public T find(RegistryCommon registry, String JavaDoc name, Class JavaDoc<T> type) {
42         if (name == null || type == null) {
43             return null;
44         }
45         
46         this.name = name;
47         this.type = type;
48         registry.accept(this);
49         return found;
50     }
51
52     public void visit(Service component) {
53         if (name.equals(component.getName())) {
54             found = type.cast(component);
55             return;
56         }
57     }
58 }
59
60
Popular Tags