1 /*
   2  * Copyright (c) 1997, 2015, 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.tools.internal.xjc.reader.xmlschema.parser;
  27 
  28 import com.sun.tools.internal.xjc.reader.internalizer.AbstractReferenceFinderImpl;
  29 import com.sun.tools.internal.xjc.reader.internalizer.DOMForest;
  30 import com.sun.tools.internal.xjc.reader.internalizer.InternalizationLogic;
  31 import com.sun.tools.internal.xjc.util.DOMUtils;
  32 import com.sun.xml.internal.bind.v2.WellKnownNamespace;
  33 
  34 import org.w3c.dom.Element;
  35 import org.w3c.dom.NodeList;
  36 import org.xml.sax.Attributes;
  37 import org.xml.sax.helpers.XMLFilterImpl;
  38 
  39 /**
  40  * XML Schema specific internalization logic.
  41  *
  42  * @author
  43  *     Kohsuke Kawaguchi (kohsuke.kawaguchi@sun.com)
  44  */
  45 public class XMLSchemaInternalizationLogic implements InternalizationLogic {
  46 
  47     /**
  48      * This filter looks for {@code <xs:import> and <xs:include>}
  49      * and parses those documents referenced by them.
  50      */
  51     private static final class ReferenceFinder extends AbstractReferenceFinderImpl {
  52         ReferenceFinder( DOMForest parent ) {
  53             super(parent);
  54         }
  55 
  56         protected String findExternalResource( String nsURI, String localName, Attributes atts) {
  57             if( WellKnownNamespace.XML_SCHEMA.equals(nsURI)
  58             && ("import".equals(localName) || "include".equals(localName) ) )
  59                 return atts.getValue("schemaLocation");
  60             else
  61                 return null;
  62         }
  63     }
  64 
  65     public XMLFilterImpl createExternalReferenceFinder(DOMForest parent) {
  66         return new ReferenceFinder(parent);
  67     }
  68 
  69     public boolean checkIfValidTargetNode(DOMForest parent, Element bindings, Element target) {
  70         return WellKnownNamespace.XML_SCHEMA.equals(target.getNamespaceURI());
  71     }
  72 
  73     public Element refineTarget(Element target) {
  74         // look for existing xs:annotation
  75         Element annotation = DOMUtils.getFirstChildElement(target, WellKnownNamespace.XML_SCHEMA, "annotation");
  76         if(annotation==null)
  77             // none exists. need to make one
  78             annotation = insertXMLSchemaElement( target, "annotation" );
  79 
  80         // then look for appinfo
  81         Element appinfo = DOMUtils.getFirstChildElement(annotation, WellKnownNamespace.XML_SCHEMA, "appinfo" );
  82         if(appinfo==null)
  83             // none exists. need to make one
  84             appinfo = insertXMLSchemaElement( annotation, "appinfo" );
  85 
  86         return appinfo;
  87     }
  88 
  89     /**
  90      * Creates a new XML Schema element of the given local name
  91      * and insert it as the first child of the given parent node.
  92      *
  93      * @return
  94      *      Newly create element.
  95      */
  96     private Element insertXMLSchemaElement( Element parent, String localName ) {
  97         // use the same prefix as the parent node to avoid modifying
  98         // the namespace binding.
  99         String qname = parent.getTagName();
 100         int idx = qname.indexOf(':');
 101         if(idx==-1)     qname = localName;
 102         else            qname = qname.substring(0,idx+1)+localName;
 103 
 104         Element child = parent.getOwnerDocument().createElementNS( WellKnownNamespace.XML_SCHEMA, qname );
 105 
 106         NodeList children = parent.getChildNodes();
 107 
 108         if( children.getLength()==0 )
 109             parent.appendChild(child);
 110         else
 111             parent.insertBefore( child, children.item(0) );
 112 
 113         return child;
 114     }
 115 }
--- EOF ---