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A processor for parsing, validating, serializing and manipulating XML, written in Java
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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.xpath.XPathException;
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.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.apache.xerces.xni.QName;
import org.w3c.dom.Element;
/**
* This class contains code that all three IdentityConstraint
* traversers (the XSDUniqueTraverser, XSDKeyTraverser and
* XSDKeyrefTraverser) rely upon.
*
* @xerces.internal
*
* @version $Id$
*/
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 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
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 '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, getXPathDefaultNamespace(attrValues, schemaDoc));
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 '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, getXPathDefaultNamespace(attrValues, schemaDoc));
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)
/*
* Get the value of xpathDefaultNamespace attribute for xs:selector or xs:field.
*/
private String getXPathDefaultNamespace(Object[] attrValues, XSDocumentInfo schemaDoc) {
String xpathDefaultNamespace = ((String)attrValues[XSAttributeChecker.ATTIDX_XPATHDEFAULTNS]);
if (xpathDefaultNamespace == null) {
xpathDefaultNamespace = schemaDoc.fXpathDefaultNamespace;
}
return xpathDefaultNamespace;
} // getXPathDefaultNamespace
void traverseIdentityConstraintReferral(Element icElem, XSElementDecl element,
XSDocumentInfo schemaDoc, SchemaGrammar grammar) {
// General Attribute Checking
Object[] attrValues = fAttrChecker.checkAttributes(icElem, false, schemaDoc);
QName referredIcQName = (QName)attrValues[XSAttributeChecker.ATTIDX_REF];
IdentityConstraint referredIc = (IdentityConstraint)fSchemaHandler.getGlobalDecl(schemaDoc, XSDHandler.IDENTITYCONSTRAINT_TYPE, referredIcQName, icElem);
// TODO: If the referredIc had a problem such as the refer attribute did not resolve to a unique/key,
// the referredIc will not have been built but it will be hidden.
// When we try to get its declaration, it will display Internal error.
// Same thing happens when a keyref has refer attribute which is its own name. But the internal error would be correct.
if (referredIc == null) {
fAttrChecker.returnAttrArray(attrValues, schemaDoc);
return;
}
short referralIcCategory;
String icCategoryName = DOMUtil.getLocalName(icElem);
// Check that the category of referred ic is same as this
if (icCategoryName.equals(SchemaSymbols.ELT_UNIQUE)) {
referralIcCategory = IdentityConstraint.IC_UNIQUE;
} else if (icCategoryName.equals(SchemaSymbols.ELT_KEY)) {
referralIcCategory = IdentityConstraint.IC_KEY;
} else {
referralIcCategory = IdentityConstraint.IC_KEYREF;
}
if (referredIc.getCategory() != referralIcCategory) {
reportSchemaError("src-identity-constraint.5", new Object[]{DOMUtil.getLocalName(icElem)}, icElem);
fAttrChecker.returnAttrArray(attrValues, schemaDoc);
return;
}
// Check ic structure; the only child allowed is annotation
Element annoElem = DOMUtil.getFirstChildElement(icElem);
if (annoElem != null) {
if (DOMUtil.getLocalName(annoElem).equals(SchemaSymbols.ELT_ANNOTATION)) {
// when annotation is found, we add it to the annotation list of the enclosing element directly
element.addAnnotation(traverseAnnotationDecl(annoElem, attrValues, false, schemaDoc));
annoElem = DOMUtil.getNextSiblingElement(annoElem);
} else {
reportSchemaError("s4s-elt-must-match.1", new Object [] {icElem.getLocalName(), "(annotation?)", DOMUtil.getLocalName(annoElem)}, annoElem);
return;
}
if (annoElem != null) {
reportSchemaError("s4s-elt-must-match.1", new Object [] {icElem.getLocalName(), "(annotation?)", DOMUtil.getLocalName(annoElem)}, annoElem);
return;
}
} else {
String text = DOMUtil.getSyntheticAnnotation(icElem);
if (text != null) {
element.addAnnotation(traverseSyntheticAnnotation(icElem, text, attrValues, false, schemaDoc));
}
}
// Add the annotations of the ic to the enclosing element
/*XSObjectListImpl annotationsList = (XSObjectListImpl)referredIc.getAnnotations();
if (annotationsList != XSObjectListImpl.EMPTY_LIST) {
// copy the ic annotations into the enclosing element
for (int i=0; i