org.apache.xerces.impl.xs.traversers.XSDAbstractIDConstraintTraverser Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of xercesImpl Show documentation
Show all versions of xercesImpl Show documentation
Xerces2 is the next generation of high performance, fully compliant XML parsers in the Apache Xerces family.
This new version of Xerces introduces the Xerces Native Interface (XNI), a complete framework for building
parser components and configurations that is extremely modular and easy to program. The Apache Xerces2 parser is
the reference implementation of XNI but other parser components, configurations, and parsers can be written
using the Xerces Native Interface. For complete design and implementation documents, refer to the XNI Manual.
Xerces2 is a fully conforming XML Schema 1.0 processor. A partial experimental implementation of the XML Schema
1.1 Structures and Datatypes Working Drafts (December 2009) and an experimental implementation of the XML Schema
Definition Language (XSD): Component Designators (SCD) Candidate Recommendation (January 2010) are provided for
evaluation. For more information, refer to the XML Schema page. Xerces2 also provides a complete implementation
of the Document Object Model Level 3 Core and Load/Save W3C Recommendations and provides a complete
implementation of the XML Inclusions (XInclude) W3C Recommendation. It also provides support for OASIS XML
Catalogs v1.1. Xerces2 is able to parse documents written according to the XML 1.1 Recommendation, except that
it does not yet provide an option to enable normalization checking as described in section 2.13 of this
specification. It also handles namespaces according to the XML Namespaces 1.1 Recommendation, and will correctly
serialize XML 1.1 documents if the DOM level 3 load/save APIs are in use.
The newest version!
/*
* 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 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);
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);
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