svn commit: r730481 - /xerces/java/branches/stax-dev/src/org/apache/xerces/stax/DefaultNamespaceContext.java

[mr...@apache.org]

Author: mrglavas
Date: Wed Dec 31 13:15:56 2008
New Revision: 730481

URL: http://svn.apache.org/viewvc?rev=730481&view=rev
Log:
A NamespaceContext which only contains bindings for the xml and xmlns prefixes.

Added:
    xerces/java/branches/stax-dev/src/org/apache/xerces/stax/DefaultNamespaceContext.java   (with props)

Added: xerces/java/branches/stax-dev/src/org/apache/xerces/stax/DefaultNamespaceContext.java
URL: http://svn.apache.org/viewvc/xerces/java/branches/stax-dev/src/org/apache/xerces/stax/DefaultNamespaceContext.java?rev=730481&view=auto
==============================================================================
--- xerces/java/branches/stax-dev/src/org/apache/xerces/stax/DefaultNamespaceContext.java (added)
+++ xerces/java/branches/stax-dev/src/org/apache/xerces/stax/DefaultNamespaceContext.java Wed Dec 31 13:15:56 2008
@@ -0,0 +1,120 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ * 
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.xerces.stax;
+
+import java.util.Collections;
+import java.util.Iterator;
+import java.util.NoSuchElementException;
+
+import javax.xml.XMLConstants;
+import javax.xml.namespace.NamespaceContext;
+
+/**
+ * <p>A <code>NamespaceContext</code> which only 
+ * contains bindings for the xml and xmlns prefixes.</p>
+ * 
+ * @xerces.internal
+ * 
+ * @author Michael Glavassevich, IBM
+ * 
+ * @version $Id$
+ */
+public class DefaultNamespaceContext implements NamespaceContext {
+    
+    /**
+     * Singleton instance.
+     */
+    private static final DefaultNamespaceContext DEFAULT_NAMESPACE_CONTEXT_INSTANCE 
+        = new DefaultNamespaceContext();
+    
+    private DefaultNamespaceContext() {}
+    
+    /** Returns the one and only instance of this class. */
+    public static DefaultNamespaceContext getInstance() {
+        return DEFAULT_NAMESPACE_CONTEXT_INSTANCE;
+    }
+    
+    public String getNamespaceURI(String prefix) {
+        if (prefix == null) {
+            throw new IllegalArgumentException("Prefix cannot be null.");
+        }
+        else if (XMLConstants.XML_NS_PREFIX.equals(prefix)) {
+            return XMLConstants.XML_NS_URI;
+        }
+        else if (XMLConstants.XMLNS_ATTRIBUTE.equals(prefix)) {
+            return XMLConstants.XMLNS_ATTRIBUTE_NS_URI;
+        }
+        return XMLConstants.NULL_NS_URI;
+    } // getNamespaceURI(String)
+
+    public String getPrefix(String namespaceURI) {
+        if (namespaceURI == null) {
+            throw new IllegalArgumentException("Namespace URI cannot be null.");
+        }
+        else if (XMLConstants.XML_NS_URI.equals(namespaceURI)) {
+            return XMLConstants.XML_NS_PREFIX;
+        }
+        else if (XMLConstants.XMLNS_ATTRIBUTE_NS_URI.equals(namespaceURI)) {
+            return XMLConstants.XMLNS_ATTRIBUTE;
+        }
+        return null;
+    } // getPrefix(String)
+
+    public Iterator getPrefixes(String namespaceURI) {
+        if (namespaceURI == null) {
+            throw new IllegalArgumentException("Namespace URI cannot be null.");
+        }
+        else if (XMLConstants.XML_NS_URI.equals(namespaceURI)) {
+            return new Iterator() {
+                boolean more = true;
+                public boolean hasNext() {
+                    return more;
+                }
+                public Object next() {
+                    if (!hasNext()) {
+                        throw new NoSuchElementException();
+                    }
+                    more = false;
+                    return XMLConstants.XML_NS_PREFIX;
+                }
+                public void remove() {
+                    throw new UnsupportedOperationException();                   
+                }  
+            };
+        }
+        else if (XMLConstants.XMLNS_ATTRIBUTE_NS_URI.equals(namespaceURI)) {
+            return new Iterator() {
+                boolean more = true;
+                public boolean hasNext() {
+                    return more;
+                }
+                public Object next() {
+                    if (!hasNext()) {
+                        throw new NoSuchElementException();
+                    }
+                    more = false;
+                    return XMLConstants.XMLNS_ATTRIBUTE;
+                }
+                public void remove() {
+                    throw new UnsupportedOperationException();                   
+                }  
+            };
+        }
+        return Collections.EMPTY_LIST.iterator();
+    } // getPrefixes(String)
+}

Propchange: xerces/java/branches/stax-dev/src/org/apache/xerces/stax/DefaultNamespaceContext.java
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Propchange: xerces/java/branches/stax-dev/src/org/apache/xerces/stax/DefaultNamespaceContext.java
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    svn:keywords = Author Date Id Revision



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