KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > org > apache > xalan > xsltc > trax > XSLTCSource


1
2 /*
3  * Copyright 2001-2004 The Apache Software Foundation.
4  *
5  * Licensed under the Apache License, Version 2.0 (the "License");
6  * you may not use this file except in compliance with the License.
7  * You may obtain a copy of the License at
8  *
9  * http://www.apache.org/licenses/LICENSE-2.0
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  */
17 /*
18  * $Id: XSLTCSource.java,v 1.9 2004/02/16 22:57:21 minchau Exp $
19  */
20
21 package org.apache.xalan.xsltc.trax;
22
23 import javax.xml.transform.Source JavaDoc;
24 import javax.xml.transform.stream.StreamSource JavaDoc;
25
26 import org.apache.xalan.xsltc.DOM;
27 import org.apache.xalan.xsltc.StripFilter;
28 import org.apache.xalan.xsltc.compiler.util.ErrorMsg;
29 import org.apache.xalan.xsltc.dom.DOMWSFilter;
30 import org.apache.xalan.xsltc.dom.SAXImpl;
31 import org.apache.xalan.xsltc.dom.XSLTCDTMManager;
32 import org.apache.xalan.xsltc.runtime.AbstractTranslet;
33
34 import org.xml.sax.SAXException JavaDoc;
35
36 /**
37  * @author Morten Jorgensen
38  */
39 public final class XSLTCSource implements Source JavaDoc {
40
41     private String JavaDoc _systemId = null;
42     private Source JavaDoc _source = null;
43     private ThreadLocal JavaDoc _dom = new ThreadLocal JavaDoc();
44
45     /**
46      * Create a new XSLTC-specific source from a system ID
47      */
48     public XSLTCSource(String JavaDoc systemId)
49     {
50         _systemId = systemId;
51     }
52
53     /**
54      * Create a new XSLTC-specific source from a JAXP Source
55      */
56     public XSLTCSource(Source JavaDoc source)
57     {
58         _source = source;
59     }
60
61     /**
62      * Implements javax.xml.transform.Source.setSystemId()
63      * Set the system identifier for this Source.
64      * This Source can get its input either directly from a file (in this case
65      * it will instanciate and use a JAXP parser) or it can receive it through
66      * ContentHandler/LexicalHandler interfaces.
67      * @param systemId The system Id for this Source
68      */
69     public void setSystemId(String JavaDoc systemId) {
70         _systemId = systemId;
71         if (_source != null) {
72             _source.setSystemId(systemId);
73         }
74     }
75
76     /**
77      * Implements javax.xml.transform.Source.getSystemId()
78      * Get the system identifier that was set with setSystemId.
79      * @return The system identifier that was set with setSystemId,
80      * or null if setSystemId was not called.
81      */
82     public String JavaDoc getSystemId() {
83     if (_source != null) {
84         return _source.getSystemId();
85     }
86     else {
87         return(_systemId);
88     }
89     }
90     
91     /**
92      * Internal interface which returns a DOM for a given DTMManager and translet.
93      */
94     protected DOM getDOM(XSLTCDTMManager dtmManager, AbstractTranslet translet)
95         throws SAXException JavaDoc
96     {
97         SAXImpl idom = (SAXImpl)_dom.get();
98                 
99         if (idom != null) {
100             if (dtmManager != null) {
101                 idom.migrateTo(dtmManager);
102             }
103         }
104         else {
105             Source JavaDoc source = _source;
106             if (source == null) {
107                 if (_systemId != null && _systemId.length() > 0) {
108                     source = new StreamSource JavaDoc(_systemId);
109                 }
110                 else {
111                     ErrorMsg err = new ErrorMsg(ErrorMsg.XSLTC_SOURCE_ERR);
112                     throw new SAXException JavaDoc(err.toString());
113                 }
114             }
115             
116             DOMWSFilter wsfilter = null;
117             if (translet != null && translet instanceof StripFilter) {
118                 wsfilter = new DOMWSFilter(translet);
119             }
120                 
121             boolean hasIdCall = (translet != null) ? translet.hasIdCall() : false;
122             
123             if (dtmManager == null) {
124                 dtmManager = XSLTCDTMManager.newInstance();
125             }
126             
127             idom = (SAXImpl)dtmManager.getDTM(source, true, wsfilter, false, false, hasIdCall);
128             
129             String JavaDoc systemId = getSystemId();
130             if (systemId != null) {
131                 idom.setDocumentURI(systemId);
132             }
133             _dom.set(idom);
134         }
135         return idom;
136     }
137
138 }
139
Popular Tags