1 // $Id: UnusedTypeFinderWorker.java 165 2009-05-28 21:46:38Z agony $
2 /*
3 * xsAnalyzer - XML schema analyzing tool. Copyright (C) 2008 Michael Engelhardt
4 *
5 * This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public
6 * License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later
7 * version.
8 *
9 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
10 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
11 *
12 * You should have received a copy of the GNU General Public License along with this program; if not, write to the Free
13 * Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
14 */
15 /**
16 *
17 */
18 package de.mindcrimeilab.xsanalyzer;
19
20 import java.util.Collections;
21 import java.util.HashSet;
22 import java.util.Set;
23
24 import org.apache.commons.logging.Log;
25 import org.apache.commons.logging.LogFactory;
26 import org.apache.xerces.xs.XSObject;
27 import org.apache.xerces.xs.XSTypeDefinition;
28
29 import de.mindcrimeilab.xsanalyzer.util.XSModelHelper;
30
31 /**
32 * @author Michael Engelhardt<me@mindcrime-ilab.de>
33 * @author $Author: agony $
34 * @version $Revision: 165 $
35 *
36 */
37 public class UnusedTypeFinderWorker extends NamespaceFilteredWorker implements XsComponentWorker {
38
39 private static final Log logger = LogFactory.getLog("xsAnalyzerApplicationLogger");
40
41 /** List of unused types */
42 private final Set<XSTypeDefinition> unusedTypes;
43
44 public UnusedTypeFinderWorker(Set<? extends XSTypeDefinition> definedTypes) {
45 super();
46 unusedTypes = new HashSet<XSTypeDefinition>();
47 /* threat all defined types as potentially unsed types. */
48 unusedTypes.addAll(definedTypes);
49 }
50
51 /**
52 * Returns the list of unused types in given model.
53 *
54 * @return the unusedTypes
55 */
56 public Set<XSTypeDefinition> getUnusedTypes() {
57 return Collections.unmodifiableSet(unusedTypes);
58 }
59
60 @Override
61 public boolean isSupported(XSObject object) {
62 return super.isSupported(object);
63 }
64
65 /*
66 * (non-Javadoc)
67 *
68 * @see de.mindcrimeilab.xsanalyzer.XsComponentWorker#execute(org.apache.xerces .xs.XSObject)
69 */
70 @Override
71 public void execute(XSObject object, XSObject parent) {
72 /*
73 * LOOK FORWARD
74 *
75 * get base type of given object and check if the type is in the list of global defined types.
76 *
77 * There are is one special case, if it is a simple type of varity list, there is no real base type.
78 */
79 final XSTypeDefinition type = XSModelHelper.getBaseType(object);
80
81 if (null != type) {
82 boolean result = unusedTypes.remove(type);
83 UnusedTypeFinderWorker.logger.debug("Remove result is [" + result + "]");
84 }
85
86 // checkUsage(definedTypes, object, (XSTypeDefinition) parent);
87 }
88 }