XSDAttributeGroupTraverser


1   /*
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4    *
5    * Copyright (c) 2001-2003 The Apache Software Foundation.  All rights
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57  package com.sun.org.apache.xerces.internal.impl.xs.traversers;
58  
59  import com.sun.org.apache.xerces.internal.impl.xs.SchemaGrammar;
60  import com.sun.org.apache.xerces.internal.impl.xs.SchemaSymbols;
61  import com.sun.org.apache.xerces.internal.impl.xs.XSAnnotationImpl;
62  import com.sun.org.apache.xerces.internal.impl.xs.XSAttributeGroupDecl;
63  import com.sun.org.apache.xerces.internal.util.DOMUtil;
64  import com.sun.org.apache.xerces.internal.util.XMLSymbols;
65  import com.sun.org.apache.xerces.internal.xni.QName;
66  import org.w3c.dom.Element  ;
67  
68  /**
69   * The attribute group definition schema component traverser.
70   *
71   * <attributeGroup
72   *   id = ID
73   *   name = NCName
74   *   ref = QName
75   *   {any attributes with non-schema namespace . . .}>
76   *   Content: (annotation?, ((attribute | attributeGroup)*, anyAttribute?))
77   * </attributeGroup>
78   *
79   * @author Rahul Srivastava, Sun Microsystems Inc.
80   * @author Sandy Gao, IBM
81   *
82   * @version $Id: XSDAttributeGroupTraverser.java,v 1.11 2003/06/23 16:35:22 neilg Exp $
83   */
84  class XSDAttributeGroupTraverser extends XSDAbstractTraverser {
85  
86      XSDAttributeGroupTraverser (XSDHandler handler,
87                                  XSAttributeChecker gAttrCheck) {
88  
89          super(handler, gAttrCheck);
90      }
91  
92  
93      XSAttributeGroupDecl traverseLocal(Element   elmNode,
94                                         XSDocumentInfo schemaDoc,
95                                         SchemaGrammar grammar) {
96  
97          // General Attribute Checking for elmNode declared locally
98          Object  [] attrValues = fAttrChecker.checkAttributes(elmNode, false, schemaDoc);
99  
100         // get attribute
101         QName   refAttr = (QName)   attrValues[XSAttributeChecker.ATTIDX_REF];
102 
103         XSAttributeGroupDecl attrGrp = null;
104 
105         // ref should be here.
106         if (refAttr == null) {
107             reportSchemaError("s4s-att-must-appear", new Object  []{"attributeGroup (local)", "ref"}, elmNode);
108             fAttrChecker.returnAttrArray(attrValues, schemaDoc);
109             return null;
110         }
111 
112         // get global decl
113         attrGrp = (XSAttributeGroupDecl)fSchemaHandler.getGlobalDecl(schemaDoc, XSDHandler.ATTRIBUTEGROUP_TYPE, refAttr, elmNode);
114 
115 
116         // no children are allowed here except annotation, which is optional.
117         Element   child = DOMUtil.getFirstChildElement(elmNode);
118         if (child != null) {
119             String   childName = DOMUtil.getLocalName(child);
120             if (childName.equals(SchemaSymbols.ELT_ANNOTATION)) {
121                 traverseAnnotationDecl(child, attrValues, false, schemaDoc);
122                 child = DOMUtil.getNextSiblingElement(child);
123             }
124 
125             if (child != null) {
126                 Object  [] args = new Object   [] {refAttr.rawname, "(annotation?)", DOMUtil.getLocalName(child)};
127                 reportSchemaError("s4s-elt-must-match.1", args, child);
128             }
129          } // if
130 
131         fAttrChecker.returnAttrArray(attrValues, schemaDoc);
132         return attrGrp;
133 
134     } // traverseLocal
135 
136     XSAttributeGroupDecl traverseGlobal(Element   elmNode,
137                                         XSDocumentInfo schemaDoc,
138                                         SchemaGrammar grammar) {
139 
140         XSAttributeGroupDecl attrGrp = new XSAttributeGroupDecl();
141 
142         // General Attribute Checking for elmNode declared globally
143         Object  [] attrValues = fAttrChecker.checkAttributes(elmNode, true, schemaDoc);
144 
145         String    nameAttr   = (String  ) attrValues[XSAttributeChecker.ATTIDX_NAME];
146 
147         // global declaration must have a name
148         if (nameAttr == null) {
149             reportSchemaError("s4s-att-must-appear", new Object  []{"attributeGroup (global)", "name"}, elmNode);
150             nameAttr = "no name";
151         }
152 
153         attrGrp.fName = nameAttr;
154         attrGrp.fTargetNamespace = schemaDoc.fTargetNamespace;
155 
156         // check the content
157         Element   child = DOMUtil.getFirstChildElement(elmNode);
158         XSAnnotationImpl annotation = null;
159 
160         if (child!=null) {
161             String   childName = DOMUtil.getLocalName(child);
162             if (childName.equals(SchemaSymbols.ELT_ANNOTATION)) {
163               annotation = traverseAnnotationDecl(child, attrValues, false, schemaDoc);
164               child = DOMUtil.getNextSiblingElement(child);
165           }
166         }
167 
168         // Traverse the attribute and attribute group elements and fill in the 
169         // attributeGroup structure
170 
171         Element   nextNode = traverseAttrsAndAttrGrps(child, attrGrp, schemaDoc, grammar, null);
172         if (nextNode!=null) {
173             // An invalid element was found...
174             Object  [] args = new Object   [] {nameAttr, "(annotation?, ((attribute | attributeGroup)*, anyAttribute?))", DOMUtil.getLocalName(nextNode)};
175             reportSchemaError("s4s-elt-must-match.1", args, nextNode);
176         } 
177  
178         // Remove prohibited attributes from the set
179         attrGrp.removeProhibitedAttrs();
180         
181         // check for restricted redefine:
182         XSAttributeGroupDecl redefinedAttrGrp = (XSAttributeGroupDecl)fSchemaHandler.getGrpOrAttrGrpRedefinedByRestriction(
183                 XSDHandler.ATTRIBUTEGROUP_TYPE, 
184                 new QName(XMLSymbols.EMPTY_STRING, nameAttr, nameAttr, schemaDoc.fTargetNamespace), 
185                 schemaDoc, elmNode); 
186         if(redefinedAttrGrp != null) {
187             Object  [] errArgs = attrGrp.validRestrictionOf(nameAttr, redefinedAttrGrp);
188             if (errArgs != null) {
189                 reportSchemaError((String  )errArgs[errArgs.length-1], errArgs, child);               
190                 reportSchemaError("src-redefine.7.2.2", new Object   [] {nameAttr, errArgs[errArgs.length-1]}, child);
191             }
192         }
193 
194         attrGrp.fAnnotation = annotation;
195 
196         // make an entry in global declarations.
197         grammar.addGlobalAttributeGroupDecl(attrGrp);
198 
199         fAttrChecker.returnAttrArray(attrValues, schemaDoc);
200         return attrGrp;
201 
202     } // traverseGlobal
203 
204 } // XSDAttributeGroupTraverser
205
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