/*
* Copyright 2001, 2002,2004 The Apache Software Foundation.
*
* Licensed 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 com.sun.org.apache.xerces.internal.impl.xs.traversers;
import com.sun.org.apache.xerces.internal.impl.xs.SchemaGrammar;
import com.sun.org.apache.xerces.internal.impl.xs.SchemaSymbols;
import com.sun.org.apache.xerces.internal.impl.xs.XSElementDecl;
import com.sun.org.apache.xerces.internal.impl.xs.identity.IdentityConstraint;
import com.sun.org.apache.xerces.internal.impl.xs.identity.UniqueOrKey;
import com.sun.org.apache.xerces.internal.util.DOMUtil;
import org.w3c.dom.Element;
/**
* This class contains code that is used to traverse both <key>s and
* <unique>s.
*
* @xerces.internal
*
* @author Neil Graham, IBM
* @version $Id: XSDUniqueOrKeyTraverser.java,v 1.2.6.1 2005/09/09 07:25:38 sunithareddy Exp $
*/
class XSDUniqueOrKeyTraverser extends XSDAbstractIDConstraintTraverser {
public XSDUniqueOrKeyTraverser (XSDHandler handler,
XSAttributeChecker gAttrCheck) {
super(handler, gAttrCheck);
}
void traverse(Element uElem, XSElementDecl element,
XSDocumentInfo schemaDoc, SchemaGrammar grammar) {
// General Attribute Checking
Object[] attrValues = fAttrChecker.checkAttributes(uElem, false, schemaDoc);
// create identity constraint
String uName = (String)attrValues[XSAttributeChecker.ATTIDX_NAME];
if(uName == null){
reportSchemaError("s4s-att-must-appear", new Object [] {DOMUtil.getLocalName(uElem) , SchemaSymbols.ATT_NAME }, uElem);
//return this array back to pool
fAttrChecker.returnAttrArray(attrValues, schemaDoc);
return;
}
UniqueOrKey uniqueOrKey = null;
if(DOMUtil.getLocalName(uElem).equals(SchemaSymbols.ELT_UNIQUE)) {
uniqueOrKey = new UniqueOrKey(schemaDoc.fTargetNamespace, uName, element.fName, IdentityConstraint.IC_UNIQUE);
} else {
uniqueOrKey = new UniqueOrKey(schemaDoc.fTargetNamespace, uName, element.fName, IdentityConstraint.IC_KEY);
}
// it's XSDElementTraverser's job to ensure that there's no
// duplication (or if there is that restriction is involved
// and there's identity).
// get selector and fields
traverseIdentityConstraint(uniqueOrKey, uElem, schemaDoc, attrValues);
// and stuff this in the grammar
grammar.addIDConstraintDecl(element, uniqueOrKey);
// and fix up attributeChecker
fAttrChecker.returnAttrArray(attrValues, schemaDoc);
} // traverse(Element,XSDElementDecl,XSDocumentInfo, SchemaGrammar)
} // XSDUniqueOrKeyTraverser