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Java > Open Source Codes > com > sun > org > apache > xerces > internal > jaxp > DocumentBuilderFactoryImpl


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57
58
59 package com.sun.org.apache.xerces.internal.jaxp;
60
61 import java.util.Hashtable JavaDoc;
62
63 import javax.xml.parsers.DocumentBuilder JavaDoc;
64 import javax.xml.parsers.DocumentBuilderFactory JavaDoc;
65 import javax.xml.parsers.ParserConfigurationException JavaDoc;
66 import javax.xml.validation.Schema JavaDoc;
67 import com.sun.org.apache.xerces.internal.dom.DOMMessageFormatter;
68
69 import com.sun.org.apache.xerces.internal.impl.Constants;
70 import com.sun.org.apache.xerces.internal.parsers.DOMParser;
71 import org.xml.sax.SAXException JavaDoc;
72
73 /**
74  * @author Rajiv Mordani
75  * @author Edwin Goei
76  * @version $Id: DocumentBuilderFactoryImpl.java,v 1.14 2004/02/24 23:15:58 mrglavas Exp $
77  */
78 public class DocumentBuilderFactoryImpl extends DocumentBuilderFactory JavaDoc {
79     /** These are DocumentBuilderFactory attributes not DOM attributes */
80     private Hashtable JavaDoc attributes;
81     private Schema JavaDoc grammar;
82     private boolean isXIncludeAware;
83     
84     /**
85      * Creates a new instance of a {@link javax.xml.parsers.DocumentBuilder}
86      * using the currently configured parameters.
87      */
88     public DocumentBuilder JavaDoc newDocumentBuilder()
89     throws ParserConfigurationException JavaDoc {
90         // check the consistency between the specified schema and
91 // the schema property. I thought about putting this into
92 // DocumentBuilderImpl, but because of the hack in the getAttribute method,
93 // we can't really do that. -KK
94 if( attributes!= null && attributes.containsKey("http://java.sun.com/xml/jaxp/properties/schemaLanguage") && grammar!=null )
95             throw new ParserConfigurationException JavaDoc(
96             DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN,
97             "jaxp-schema-support",null));
98         
99         
100         try {
101             return new DocumentBuilderImpl(this, attributes);
102         } catch (SAXException JavaDoc se) {
103             // Handles both SAXNotSupportedException, SAXNotRecognizedException
104 throw new ParserConfigurationException JavaDoc(se.getMessage());
105         }
106     }
107     
108     /**
109      * Allows the user to set specific attributes on the underlying
110      * implementation.
111      * @param name name of attribute
112      * @param value null means to remove attribute
113      */
114     public void setAttribute(String JavaDoc name, Object JavaDoc value)
115     throws IllegalArgumentException JavaDoc {
116         // This handles removal of attributes
117 if (value == null) {
118             if (attributes != null) {
119                 attributes.remove(name);
120             }
121             // Unrecognized attributes do not cause an exception
122 return;
123         }
124         
125         // This is ugly. We have to collect the attributes and then
126 // later create a DocumentBuilderImpl to verify the attributes.
127
128         // Create Hashtable if none existed before
129 if (attributes == null) {
130             attributes = new Hashtable JavaDoc();
131         }
132         
133         attributes.put(name, value);
134         
135         // Test the attribute name by possibly throwing an exception
136 try {
137             new DocumentBuilderImpl(this, attributes);
138         } catch (Exception JavaDoc e) {
139             attributes.remove(name);
140             throw new IllegalArgumentException JavaDoc(e.getMessage());
141         }
142     }
143     
144     /**
145      * Allows the user to retrieve specific attributes on the underlying
146      * implementation.
147      */
148     public Object JavaDoc getAttribute(String JavaDoc name) throws IllegalArgumentException JavaDoc {
149         // See if it's in the attributes Hashtable
150 if (attributes != null) {
151             Object JavaDoc val = attributes.get(name);
152             if (val != null) {
153                 return val;
154             }
155         }
156         
157         DOMParser domParser = null;
158         try {
159             // We create a dummy DocumentBuilderImpl in case the attribute
160 // name is not one that is in the attributes hashtable.
161 domParser =
162             new DocumentBuilderImpl(this, attributes).getDOMParser();
163             return domParser.getProperty(name);
164         } catch (SAXException JavaDoc se1) {
165             // assert(name is not recognized or not supported), try feature
166 try {
167                 boolean result = domParser.getFeature(name);
168                 // Must have been a feature
169 return result ? Boolean.TRUE : Boolean.FALSE;
170             } catch (SAXException JavaDoc se2) {
171                 // Not a property or a feature
172 throw new IllegalArgumentException JavaDoc(se1.getMessage());
173             }
174         }
175     }
176     
177     public Schema JavaDoc getSchema() {
178         return grammar;
179     }
180     
181     public void setSchema(Schema JavaDoc grammar) {
182         this.grammar = grammar;
183     }
184     
185     public boolean isXIncludeAware() {
186         return this.isXIncludeAware;
187     }
188     
189     public void setXIncludeAware(boolean state) {
190         this.isXIncludeAware = state;
191     }
192     
193     public void setFeature(String JavaDoc name, boolean value)
194     throws ParserConfigurationException JavaDoc{
195         
196         //Revisit::
197 //for now use attributes itself. we just support on feature.
198 //If we need to use setFeature in full fledge we should
199 //document what is supported by setAttribute
200 //and what is by setFeature.
201 //user should not use setAttribute("xyz",Boolean.TRUE)
202 //instead of setFeature("xyz",true);
203 if(attributes == null)
204             attributes = new Hashtable JavaDoc();
205         if(name.equals(Constants.FEATURE_SECURE_PROCESSING)){
206             attributes.put(Constants.FEATURE_SECURE_PROCESSING,Boolean.valueOf(value));
207         } else throw new ParserConfigurationException JavaDoc(
208         DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN,
209         "jaxp_feature_not_supported",
210         new Object JavaDoc[] {name}));
211         
212     }
213     
214     public boolean getFeature(String JavaDoc name)
215     throws ParserConfigurationException JavaDoc {
216         
217         if (name.equals(Constants.FEATURE_SECURE_PROCESSING)){
218             Object JavaDoc ob = attributes.get(Constants.FEATURE_SECURE_PROCESSING);
219             if(ob == null) return false;
220             return ((Boolean JavaDoc)ob).booleanValue();
221         }
222         else
223             throw new ParserConfigurationException JavaDoc(DOMMessageFormatter.formatMessage(
224             DOMMessageFormatter.DOM_DOMAIN,"jaxp_feature_not_supported",
225             new Object JavaDoc[] {name}));
226     }
227 }
228
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