/*
* 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.xpath.XPathException;
import org.apache.xerces.impl.xs.SchemaSymbols;
import org.apache.xerces.impl.xs.identity.Field;
import org.apache.xerces.impl.xs.identity.IdentityConstraint;
import org.apache.xerces.impl.xs.identity.Selector;
import org.apache.xerces.util.DOMUtil;
import org.apache.xerces.util.XMLChar;
import org.w3c.dom.Element;
/**
* This class contains code that all three IdentityConstraint
* traversers (the XSDUniqueTraverser, XSDKeyTraverser and
* XSDKeyrefTraverser) rely upon.
*
* @xerces.internal
*
* @version $Id: XSDAbstractIDConstraintTraverser.java 774786 2009-05-14 14:31:10Z sandygao $
*/
class XSDAbstractIDConstraintTraverser extends XSDAbstractTraverser {
public XSDAbstractIDConstraintTraverser (XSDHandler handler,
XSAttributeChecker gAttrCheck) {
super(handler, gAttrCheck);
}
boolean traverseIdentityConstraint(IdentityConstraint ic,
Element icElem, XSDocumentInfo schemaDoc, Object [] icElemAttrs) {
// General Attribute Checking will have been done on icElem by caller
// check for <annotation> and get selector
Element sElem = DOMUtil.getFirstChildElement(icElem);
if(sElem == null) {
reportSchemaError("s4s-elt-must-match.2",
new Object[]{"identity constraint", "(annotation?, selector, field+)"},
icElem);
return false;
}
// General Attribute Checking on sElem
// first child could be an annotation
if (DOMUtil.getLocalName(sElem).equals(SchemaSymbols.ELT_ANNOTATION)) {
ic.addAnnotation(traverseAnnotationDecl(sElem, icElemAttrs, false, schemaDoc));
sElem = DOMUtil.getNextSiblingElement(sElem);
// if no more children report an error
if(sElem == null) {
reportSchemaError("s4s-elt-must-match.2", new Object[]{"identity constraint", "(annotation?, selector, field+)"}, icElem);
return false;
}
}
else {
String text = DOMUtil.getSyntheticAnnotation(icElem);
if (text != null) {
ic.addAnnotation(traverseSyntheticAnnotation(icElem, text, icElemAttrs, false, schemaDoc));
}
}
// must be <selector>
if(!DOMUtil.getLocalName(sElem).equals(SchemaSymbols.ELT_SELECTOR)) {
reportSchemaError("s4s-elt-must-match.1", new Object[]{"identity constraint", "(annotation?, selector, field+)", SchemaSymbols.ELT_SELECTOR}, sElem);
return false;
}
Object [] attrValues = fAttrChecker.checkAttributes(sElem, false, schemaDoc);
// make sure <selector>'s content is fine:
Element selChild = DOMUtil.getFirstChildElement(sElem);
if (selChild !=null) {
// traverse annotation if any
if (DOMUtil.getLocalName(selChild).equals(SchemaSymbols.ELT_ANNOTATION)) {
ic.addAnnotation(traverseAnnotationDecl(selChild, attrValues, false, schemaDoc));
selChild = DOMUtil.getNextSiblingElement(selChild);
}
else {
reportSchemaError("s4s-elt-must-match.1", new Object[]{SchemaSymbols.ELT_SELECTOR, "(annotation?)", DOMUtil.getLocalName(selChild)}, selChild);
}
if (selChild != null) {
reportSchemaError("s4s-elt-must-match.1", new Object [] {SchemaSymbols.ELT_SELECTOR, "(annotation?)", DOMUtil.getLocalName(selChild)}, selChild);
}
}
else {
String text = DOMUtil.getSyntheticAnnotation(sElem);
if (text != null) {
ic.addAnnotation(traverseSyntheticAnnotation(icElem, text, attrValues, false, schemaDoc));
}
}
String sText = ((String)attrValues[XSAttributeChecker.ATTIDX_XPATH]);
if(sText == null) {
reportSchemaError("s4s-att-must-appear", new Object [] {SchemaSymbols.ELT_SELECTOR, SchemaSymbols.ATT_XPATH}, sElem);
return false;
}
sText = XMLChar.trim(sText);
Selector.XPath sXpath = null;
try {
sXpath = new Selector.XPath(sText, fSymbolTable,
schemaDoc.fNamespaceSupport);
Selector selector = new Selector(sXpath, ic);
ic.setSelector(selector);
}
catch (XPathException e) {
reportSchemaError(e.getKey(), new Object[]{sText}, sElem);
// put back attr values...
fAttrChecker.returnAttrArray(attrValues, schemaDoc);
return false;
}
// put back attr values...
fAttrChecker.returnAttrArray(attrValues, schemaDoc);
// get fields
Element fElem = DOMUtil.getNextSiblingElement(sElem);
if(fElem == null) {
reportSchemaError("s4s-elt-must-match.2", new Object[]{"identity constraint", "(annotation?, selector, field+)"}, sElem);
return false;
}
while (fElem != null) {
if(!DOMUtil.getLocalName(fElem).equals(SchemaSymbols.ELT_FIELD)) {
reportSchemaError("s4s-elt-must-match.1", new Object[]{"identity constraint", "(annotation?, selector, field+)", SchemaSymbols.ELT_FIELD}, fElem);
fElem = DOMUtil.getNextSiblingElement(fElem);
continue;
}
// General Attribute Checking
attrValues = fAttrChecker.checkAttributes(fElem, false, schemaDoc);
// and make sure <field>'s content is fine:
Element fieldChild = DOMUtil.getFirstChildElement(fElem);
if (fieldChild != null) {
// traverse annotation
if (DOMUtil.getLocalName(fieldChild).equals(SchemaSymbols.ELT_ANNOTATION)) {
ic.addAnnotation(traverseAnnotationDecl(fieldChild, attrValues, false, schemaDoc));
fieldChild = DOMUtil.getNextSiblingElement(fieldChild);
}
}
if (fieldChild != null) {
reportSchemaError("s4s-elt-must-match.1", new Object [] {SchemaSymbols.ELT_FIELD, "(annotation?)", DOMUtil.getLocalName(fieldChild)}, fieldChild);
}
else {
String text = DOMUtil.getSyntheticAnnotation(fElem);
if (text != null) {
ic.addAnnotation(traverseSyntheticAnnotation(icElem, text, attrValues, false, schemaDoc));
}
}
String fText = ((String)attrValues[XSAttributeChecker.ATTIDX_XPATH]);
if (fText == null) {
reportSchemaError("s4s-att-must-appear", new Object [] {SchemaSymbols.ELT_FIELD, SchemaSymbols.ATT_XPATH}, fElem);
fAttrChecker.returnAttrArray(attrValues, schemaDoc);
return false;
}
fText = XMLChar.trim(fText);
try {
Field.XPath fXpath = new Field.XPath(fText, fSymbolTable,
schemaDoc.fNamespaceSupport);
Field field = new Field(fXpath, ic);
ic.addField(field);
}
catch (XPathException e) {
reportSchemaError(e.getKey(), new Object[]{fText}, fElem);
// put back attr values...
fAttrChecker.returnAttrArray(attrValues, schemaDoc);
return false;
}
fElem = DOMUtil.getNextSiblingElement(fElem);
// put back attr values...
fAttrChecker.returnAttrArray(attrValues, schemaDoc);
}
return ic.getFieldCount() > 0;
} // traverseIdentityConstraint(IdentityConstraint,Element, XSDocumentInfo)
} // XSDAbstractIDConstraintTraverser