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Java > Open Source Codes > org > xquark > xpath > schema > SchemaTreeBuilder


1 /*
2  * This file belongs to the XQuark distribution.
3  * Copyright (C) 2003 Universite de Versailles Saint-Quentin.
4  *
5  * This program is free software; you can redistribute it and/or
6  * modify it under the terms of the GNU Lesser General Public
7  * License as published by the Free Software Foundation; either
8  * version 2.1 of the License, or (at your option) any later version.
9  *
10  * This program is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13  * Lesser General Public License for more details.
14  *
15  * You should have received a copy of the GNU Lesser General Public
16  * License along with this program; if not, write to the Free Software
17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307.
18  * You can also get it at http://www.gnu.org/licenses/lgpl.html
19  *
20  * For more information on this software, see http://www.xquark.org.
21  */
22
23 package org.xquark.xpath.schema;
24
25
26 import java.util.Iterator JavaDoc;
27
28 import org.xquark.schema.ComplexType;
29 import org.xquark.schema.Declaration;
30 import org.xquark.schema.Schema;
31 import org.xquark.xpath.*;
32
33 /**
34  * Specific implementation of XTreeBuilder.
35  *
36  */
37 public class SchemaTreeBuilder extends TypedXTreeBuilder
38 {
39 private static final String JavaDoc RCSRevision = "$Revision: 1.1 $";
40 private static final String JavaDoc RCSName = "$Name: $";
41     public XTreeNode allocateNode(XTreeNode parent, String JavaDoc namespace, String JavaDoc localName, byte type)
42     {
43         return new SchemaNode(tree, (SchemaNode)parent, namespace, localName, type);
44     }
45     public XTreeNode allocateNode(XTreeNode parent, Declaration decl)
46     {
47         return new SchemaNode(tree, (SchemaNode)parent, decl);
48     }
49     
50     public XTree allocateTree()
51     {
52         return new XTree();
53     }
54     
55     private void expand(TypedXTreeNode node)
56     {
57         if (node.getDeclaration().getType() instanceof ComplexType)
58         {
59             ComplexType type = (ComplexType)node.getDeclaration().getType();
60             Declaration decl = null;
61             
62             // process attributes
63 Iterator JavaDoc it = type.getAttributeDeclarations().iterator();
64             while(it.hasNext())
65             {
66                 decl = (Declaration) it.next();
67                 createNamedNode(node, decl.getNamespace(), decl.getName(), NodeKind.ATTRIBUTE);
68             }
69         
70             // process elements
71 it = type.getElementDeclarations().iterator();
72             while(it.hasNext())
73             {
74                 decl = (Declaration) it.next();
75                 expand((SchemaNode)createNamedNode(node, decl.getNamespace(), decl.getName(), NodeKind.ELEMENT));
76             }
77         }
78     }
79     public void expandSchemaTree(Schema schema)
80     {
81         Iterator JavaDoc it = schema.getElementDeclarations().iterator();
82         
83         while(it.hasNext())
84         { // process every root element declarations
85 expand(createTypedNode(tree.getRoot(), (Declaration)it.next()));
86         }
87     }
88 }
89
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