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/*
* 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.impl.xs.traversers;
import org.apache.xerces.impl.xs.SchemaGrammar;
import org.apache.xerces.impl.xs.SchemaSymbols;
import org.apache.xerces.impl.xs.XSElementDecl;
import org.apache.xerces.impl.xs.identity.IdentityConstraint;
import org.apache.xerces.impl.xs.identity.UniqueOrKey;
import org.apache.xerces.util.DOMUtil;
import org.w3c.dom.Element;
/**
* This class contains code that is used to traverse both s and
* s.
*
* @xerces.internal
*
* @author Neil Graham, IBM
* @version $Id: XSDUniqueOrKeyTraverser.java 884566 2009-11-26 14:30:01Z knoaman $
*/
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, IdentityConstraint.IC_UNIQUE);
} else {
uniqueOrKey = new UniqueOrKey(schemaDoc.fTargetNamespace, uName, 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).
// If errors occurred in traversing the identity constraint, then don't
// add it to the schema, to avoid errors when processing the instance.
if (traverseIdentityConstraint(uniqueOrKey, uElem, schemaDoc, attrValues)) {
// and stuff this in the grammar
if (grammar.getIDConstraintDecl(uniqueOrKey.getIdentityConstraintName()) == null) {
grammar.addIDConstraintDecl(element, uniqueOrKey);
}
final String loc = fSchemaHandler.schemaDocument2SystemId(schemaDoc);
final IdentityConstraint idc = grammar.getIDConstraintDecl(uniqueOrKey.getIdentityConstraintName(), loc);
if (idc == null) {
grammar.addIDConstraintDecl(element, uniqueOrKey, loc);
}
// handle duplicates
if (fSchemaHandler.fTolerateDuplicates) {
if (idc != null) {
if (idc instanceof UniqueOrKey) {
uniqueOrKey = (UniqueOrKey) uniqueOrKey;
}
}
fSchemaHandler.addIDConstraintDecl(uniqueOrKey);
}
}
// and fix up attributeChecker
fAttrChecker.returnAttrArray(attrValues, schemaDoc);
} // traverse(Element,XSDElementDecl,XSDocumentInfo, SchemaGrammar)
} // XSDUniqueOrKeyTraverser
