1 /*
   2  * Copyright (c) 2005, 2017, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package com.sun.org.apache.xerces.internal.util;
  27 
  28 import java.util.Iterator;
  29 import java.util.List;
  30 import javax.xml.namespace.NamespaceContext;
  31 
  32 /**
  33  * Writing a wrapper to re-use most of the namespace functionality
  34  * already provided by NamespaceSupport, which implements NamespaceContext
  35  * from XNI. It would be good if we can change the XNI NamespaceContext
  36  * interface to implement the JAXP NamespaceContext interface.
  37  *
  38  * Note that NamespaceSupport assumes the use of symbols. Since this class
  39  * can be exposed to the application, we must intern all Strings before
  40  * calling NamespaceSupport methods.
  41  *
  42  * @author  Neeraj Bajaj, Sun Microsystems, inc.
  43  * @author Santiago.PericasGeertsen@sun.com
  44  *
  45  */
  46 public class NamespaceContextWrapper implements NamespaceContext {
  47 
  48     private com.sun.org.apache.xerces.internal.xni.NamespaceContext fNamespaceContext;
  49 
  50     public NamespaceContextWrapper(NamespaceSupport namespaceContext) {
  51         fNamespaceContext = namespaceContext ;
  52     }
  53 
  54     public String getNamespaceURI(String prefix) {
  55         if (prefix == null) {
  56             throw new IllegalArgumentException("Prefix can't be null");
  57         }
  58         return fNamespaceContext.getURI(prefix.intern());
  59     }
  60 
  61     public String getPrefix(String namespaceURI) {
  62         if (namespaceURI == null) {
  63             throw new IllegalArgumentException("URI can't be null.");
  64         }
  65         return fNamespaceContext.getPrefix(namespaceURI.intern());
  66     }
  67 
  68     /**
  69      * TODO: Namespace doesn't give information giving multiple prefixes for
  70      * the same namespaceURI.
  71      */
  72     public Iterator<String> getPrefixes(String namespaceURI) {
  73         if (namespaceURI == null) {
  74             throw new IllegalArgumentException("URI can't be null.");
  75         }
  76         else {
  77            List<String> vector =
  78                 ((NamespaceSupport) fNamespaceContext).getPrefixes(namespaceURI.intern());
  79             return vector.iterator();
  80         }
  81     }
  82 
  83     /**
  84      * This method supports all functions in the NamespaceContext utility class
  85      */
  86     public com.sun.org.apache.xerces.internal.xni.NamespaceContext getNamespaceContext() {
  87         return fNamespaceContext;
  88     }
  89 
  90 }