/*
* Copyright 2001-2005 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.opti;
import java.io.IOException;
import com.sun.org.apache.xerces.internal.impl.Constants;
import com.sun.org.apache.xerces.internal.impl.XMLErrorReporter;
import com.sun.org.apache.xerces.internal.impl.xs.SchemaSymbols;
import com.sun.org.apache.xerces.internal.impl.xs.XSMessageFormatter;
import com.sun.org.apache.xerces.internal.util.XMLAttributesImpl;
import com.sun.org.apache.xerces.internal.util.XMLChar;
import com.sun.org.apache.xerces.internal.xni.Augmentations;
import com.sun.org.apache.xerces.internal.xni.NamespaceContext;
import com.sun.org.apache.xerces.internal.xni.QName;
import com.sun.org.apache.xerces.internal.xni.XMLAttributes;
import com.sun.org.apache.xerces.internal.xni.XMLLocator;
import com.sun.org.apache.xerces.internal.xni.XMLString;
import com.sun.org.apache.xerces.internal.xni.XNIException;
import com.sun.org.apache.xerces.internal.xni.parser.XMLEntityResolver;
import com.sun.org.apache.xerces.internal.xni.parser.XMLInputSource;
import com.sun.org.apache.xerces.internal.xni.parser.XMLParserConfiguration;
import org.w3c.dom.Document;
/**
* @xerces.internal
*
* @author Rahul Srivastava, Sun Microsystems Inc.
* @author Sandy Gao, IBM
*
* @version $Id: SchemaDOMParser.java,v 1.2.6.1 2005/09/08 10:42:07 sunithareddy Exp $
*/
public class SchemaDOMParser extends DefaultXMLDocumentHandler {
//
// Data
//
/** Property identifier: error reporter. */
public static final String ERROR_REPORTER =
Constants.XERCES_PROPERTY_PREFIX + Constants.ERROR_REPORTER_PROPERTY;
/** Feature identifier: generate synthetic annotations. */
public static final String GENERATE_SYNTHETIC_ANNOTATION =
Constants.XERCES_FEATURE_PREFIX + Constants.GENERATE_SYNTHETIC_ANNOTATIONS_FEATURE;
// the locator containing line/column information
protected XMLLocator fLocator;
// namespace context, needed for producing
// representations of annotations
protected NamespaceContext fNamespaceContext = null;
SchemaDOM schemaDOM;
XMLParserConfiguration config;
//
// Constructors
//
/** Default constructor. */
public SchemaDOMParser(XMLParserConfiguration config) {
this.config = config;
}
// where an annotation element itself begins
// -1 means not in an annotation's scope
private int fAnnotationDepth = -1;
// Where xs:appinfo or xs:documentation starts;
// -1 means not in the scope of either of the two elements.
private int fInnerAnnotationDepth = -1;
// The current element depth
private int fDepth = -1;
// Use to report the error when characters are not allowed.
XMLErrorReporter fErrorReporter;
// fields for generate-synthetic annotations feature
private boolean fGenerateSyntheticAnnotation = false;
private BooleanStack fHasNonSchemaAttributes = new BooleanStack();
private BooleanStack fSawAnnotation = new BooleanStack();
private XMLAttributes fEmptyAttr = new XMLAttributesImpl();
//
// XMLDocumentHandler methods
//
public void startDocument(XMLLocator locator, String encoding,
NamespaceContext namespaceContext, Augmentations augs)
throws XNIException {
fErrorReporter = (XMLErrorReporter)config.getProperty(ERROR_REPORTER);
fGenerateSyntheticAnnotation = config.getFeature(GENERATE_SYNTHETIC_ANNOTATION);
fHasNonSchemaAttributes.clear();
fSawAnnotation.clear();
schemaDOM = new SchemaDOM();
fAnnotationDepth = -1;
fInnerAnnotationDepth = -1;
fDepth = -1;
fLocator = locator;
fNamespaceContext = namespaceContext;
schemaDOM.setDocumentURI(locator.getExpandedSystemId());
} // startDocument(XMLLocator,String,NamespaceContext, Augmentations)
/**
* The end of the document.
* @param augs Additional information that may include infoset augmentations
*
* @throws XNIException Thrown by handler to signal an error.
*/
public void endDocument(Augmentations augs) throws XNIException {
// To debug the DOM created uncomment the line below
// schemaDOM.printDOM();
} // endDocument()
/**
* A comment.
*
* @param text The text in the comment.
* @param augs Additional information that may include infoset augmentations
*
* @exception XNIException
* Thrown by application to signal an error.
*/
public void comment(XMLString text, Augmentations augs) throws XNIException {
if(fAnnotationDepth > -1) {
schemaDOM.comment(text);
}
}
/**
* A processing instruction. Processing instructions consist of a
* target name and, optionally, text data. The data is only meaningful
* to the application.
* <p>
* Typically, a processing instruction's data will contain a series
* of pseudo-attributes. These pseudo-attributes follow the form of
* element attributes but are <strong>not</strong> parsed or presented
* to the application as anything other than text. The application is
* responsible for parsing the data.
*
* @param target The target.
* @param data The data or null if none specified.
* @param augs Additional information that may include infoset augmentations
*
* @exception XNIException
* Thrown by handler to signal an error.
*/
public void processingInstruction(String target, XMLString data, Augmentations augs)
throws XNIException {
if(fAnnotationDepth > -1) {
schemaDOM.processingInstruction(target, data.toString());
}
}
/**
* Character content.
*
* @param text The content.
* @param augs Additional information that may include infoset augmentations
*
* @exception XNIException
* Thrown by handler to signal an error.
*/
public void characters(XMLString text, Augmentations augs) throws XNIException {
// when it's not within xs:appinfo or xs:documentation
if (fInnerAnnotationDepth == -1 ) {
for (int i=text.offset; i<text.offset+text.length; i++) {
// and there is a non-whitespace character
if (!XMLChar.isSpace(text.ch[i])) {
// the string we saw: starting from the first non-whitespace character.
String txt = new String(text.ch, i, text.length+text.offset-i);
// report an error
fErrorReporter.reportError(XSMessageFormatter.SCHEMA_DOMAIN,
"s4s-elt-character",
new Object[]{txt},
XMLErrorReporter.SEVERITY_ERROR);
break;
}
}
// don't call super.characters() when it's not within one of the 2
// annotation elements: the traversers ignore them anyway. We can
// save time/memory creating the text nodes.
}
// when it's within either of the 2 elements, characters are allowed
// and we need to store them.
else {
schemaDOM.characters(text);
}
}
/**
* The start of an element.
*
* @param element The name of the element.
* @param attributes The element attributes.
* @param augs Additional information that may include infoset augmentations
*
* @exception XNIException
* Thrown by handler to signal an error.
*/
public void startElement(QName element, XMLAttributes attributes, Augmentations augs)
throws XNIException {
fDepth++;
// while it is true that non-whitespace character data
// may only occur in appInfo or documentation
// elements, it's certainly legal for comments and PI's to
// occur as children of annotation; we need
// to account for these here.
if (fAnnotationDepth == -1) {
if (element.uri == SchemaSymbols.URI_SCHEMAFORSCHEMA &&
element.localpart == SchemaSymbols.ELT_ANNOTATION) {
if (fGenerateSyntheticAnnotation) {
if (fSawAnnotation.size() > 0) {
fSawAnnotation.pop();
}
fSawAnnotation.push(true);
}
fAnnotationDepth = fDepth;
schemaDOM.startAnnotation(element, attributes, fNamespaceContext);
}
else if (element.uri == SchemaSymbols.URI_SCHEMAFORSCHEMA && fGenerateSyntheticAnnotation) {
fSawAnnotation.push(false);
fHasNonSchemaAttributes.push(hasNonSchemaAttributes(element, attributes));
}
} else if(fDepth == fAnnotationDepth+1) {
fInnerAnnotationDepth = fDepth;
schemaDOM.startAnnotationElement(element, attributes);
} else {
schemaDOM.startAnnotationElement(element, attributes);
// avoid falling through; don't call startElement in this case
return;
}
schemaDOM.startElement(element, attributes,
fLocator.getLineNumber(),
fLocator.getColumnNumber(),
fLocator.getCharacterOffset());
}
/**
* An empty element.
*
* @param element The name of the element.
* @param attributes The element attributes.
* @param augs Additional information that may include infoset augmentations
*
* @exception XNIException
* Thrown by handler to signal an error.
*/
public void emptyElement(QName element, XMLAttributes attributes, Augmentations augs)
throws XNIException {
if (fGenerateSyntheticAnnotation && fAnnotationDepth == -1 &&
element.uri == SchemaSymbols.URI_SCHEMAFORSCHEMA && element.localpart != SchemaSymbols.ELT_ANNOTATION && hasNonSchemaAttributes(element, attributes)) {
schemaDOM.startElement(element, attributes,
fLocator.getLineNumber(),
fLocator.getColumnNumber(),
fLocator.getCharacterOffset());
attributes.removeAllAttributes();
String schemaPrefix = fNamespaceContext.getPrefix(SchemaSymbols.URI_SCHEMAFORSCHEMA);
QName annQName = new QName(schemaPrefix, SchemaSymbols.ELT_ANNOTATION, schemaPrefix + (schemaPrefix.length() == 0?"":":") + SchemaSymbols.ELT_ANNOTATION, SchemaSymbols.URI_SCHEMAFORSCHEMA);
schemaDOM.startAnnotation(annQName, attributes, fNamespaceContext);
QName elemQName = new QName(schemaPrefix, SchemaSymbols.ELT_DOCUMENTATION, schemaPrefix + (schemaPrefix.length() == 0?"":":") + SchemaSymbols.ELT_DOCUMENTATION, SchemaSymbols.URI_SCHEMAFORSCHEMA);
schemaDOM.startAnnotationElement(elemQName, attributes);
schemaDOM.characters(new XMLString("SYNTHETIC_ANNOTATION".toCharArray(), 0, 20 ));
schemaDOM.endSyntheticAnnotationElement(elemQName, false);
schemaDOM.endSyntheticAnnotationElement(annQName, true);
schemaDOM.endElement();
return;
}
// the order of events that occurs here is:
// schemaDOM.startAnnotation/startAnnotationElement (if applicable)
// schemaDOM.emptyElement (basically the same as startElement then endElement)
// schemaDOM.endAnnotationElement (if applicable)
// the order of events that would occur if this was <element></element>:
// schemaDOM.startAnnotation/startAnnotationElement (if applicable)
// schemaDOM.startElement
// schemaDOM.endAnnotationElement (if applicable)
// schemaDOM.endElementElement
// Thus, we can see that the order of events isn't the same. However, it doesn't
// seem to matter. -- PJM
if (fAnnotationDepth == -1) {
// this is messed up, but a case to consider:
if (element.uri == SchemaSymbols.URI_SCHEMAFORSCHEMA &&
element.localpart == SchemaSymbols.ELT_ANNOTATION) {
schemaDOM.startAnnotation(element, attributes, fNamespaceContext);
}
} else {
schemaDOM.startAnnotationElement(element, attributes);
}
schemaDOM.emptyElement(element, attributes,
fLocator.getLineNumber(),
fLocator.getColumnNumber(),
fLocator.getCharacterOffset());
if (fAnnotationDepth == -1) {
// this is messed up, but a case to consider:
if (element.uri == SchemaSymbols.URI_SCHEMAFORSCHEMA &&
element.localpart == SchemaSymbols.ELT_ANNOTATION) {
schemaDOM.endAnnotationElement(element, true);
}
} else {
schemaDOM.endAnnotationElement(element, false);
}
}
/**
* The end of an element.
*
* @param element The name of the element.
* @param augs Additional information that may include infoset augmentations
*
* @exception XNIException
* Thrown by handler to signal an error.
*/
public void endElement(QName element, Augmentations augs) throws XNIException {
// when we reach the endElement of xs:appinfo or xs:documentation,
// change fInnerAnnotationDepth to -1
if(fAnnotationDepth > -1) {
if (fInnerAnnotationDepth == fDepth) {
fInnerAnnotationDepth = -1;
schemaDOM.endAnnotationElement(element, false);
schemaDOM.endElement();
} else if (fAnnotationDepth == fDepth) {
fAnnotationDepth = -1;
schemaDOM.endAnnotationElement(element, true);
schemaDOM.endElement();
} else { // inside a child of annotation
schemaDOM.endAnnotationElement(element, false);
}
} else { // not in an annotation at all
if(element.uri == SchemaSymbols.URI_SCHEMAFORSCHEMA && fGenerateSyntheticAnnotation) {
boolean value = fHasNonSchemaAttributes.pop();
boolean sawann = fSawAnnotation.pop();
if (value && !sawann) {
String schemaPrefix = fNamespaceContext.getPrefix(SchemaSymbols.URI_SCHEMAFORSCHEMA);
QName annQName = new QName(schemaPrefix, SchemaSymbols.ELT_ANNOTATION, schemaPrefix + (schemaPrefix.length() == 0?"":":") + SchemaSymbols.ELT_ANNOTATION, SchemaSymbols.URI_SCHEMAFORSCHEMA);
schemaDOM.startAnnotation(annQName, fEmptyAttr, fNamespaceContext);
QName elemQName = new QName(schemaPrefix, SchemaSymbols.ELT_DOCUMENTATION, schemaPrefix + (schemaPrefix.length() == 0?"":":") + SchemaSymbols.ELT_DOCUMENTATION, SchemaSymbols.URI_SCHEMAFORSCHEMA);
schemaDOM.startAnnotationElement(elemQName, fEmptyAttr);
schemaDOM.characters(new XMLString("SYNTHETIC_ANNOTATION".toCharArray(), 0, 20 ));
schemaDOM.endSyntheticAnnotationElement(elemQName, false);
schemaDOM.endSyntheticAnnotationElement(annQName, true);
}
}
schemaDOM.endElement();
}
fDepth--;
}
/**
* @param attributes
* @return
*/
private boolean hasNonSchemaAttributes(QName element, XMLAttributes attributes) {
final int length = attributes.getLength();
for (int i = 0; i < length; ++i) {
String uri = attributes.getURI(i);
if (uri != null && uri != SchemaSymbols.URI_SCHEMAFORSCHEMA &&
uri != NamespaceContext.XMLNS_URI &&
!(uri == NamespaceContext.XML_URI &&
attributes.getQName(i) == SchemaSymbols.ATT_XML_LANG && element.localpart == SchemaSymbols.ELT_SCHEMA)) {
return true;
}
}
return false;
}
/**
* Ignorable whitespace. For this method to be called, the document
* source must have some way of determining that the text containing
* only whitespace characters should be considered ignorable. For
* example, the validator can determine if a length of whitespace
* characters in the document are ignorable based on the element
* content model.
*
* @param text The ignorable whitespace.
* @param augs Additional information that may include infoset augmentations
*
* @exception XNIException
* Thrown by handler to signal an error.
*/
public void ignorableWhitespace(XMLString text, Augmentations augs) throws XNIException {
// unlikely to be called, but you never know...
if (fAnnotationDepth != -1 ) {
schemaDOM.characters(text);
}
}
/**
* The start of a CDATA section.
*
* @param augs Additional information that may include infoset augmentations
*
* @exception XNIException
* Thrown by handler to signal an error.
*/
public void startCDATA(Augmentations augs) throws XNIException {
// only deal with CDATA boundaries within an annotation.
if (fAnnotationDepth != -1) {
schemaDOM.startAnnotationCDATA();
}
}
/**
* The end of a CDATA section.
*
* @param augs Additional information that may include infoset augmentations
*
* @exception XNIException
* Thrown by handler to signal an error.
*/
public void endCDATA(Augmentations augs) throws XNIException {
// only deal with CDATA boundaries within an annotation.
if (fAnnotationDepth != -1) {
schemaDOM.endAnnotationCDATA();
}
}
//
// other methods
//
/**
* Returns the DOM document object.
*/
public Document getDocument() {
return schemaDOM;
}
/**
* Delegates to SchemaParsingConfig.setFeature
* @param featureId
* @param state
*/
public void setFeature(String featureId, boolean state){
config.setFeature(featureId, state);
}
/**
* Delegates to SchemaParsingConfig.getFeature
* @param featureId
* @return boolean
*/
public boolean getFeature(String featureId){
return config.getFeature(featureId);
}
/**
* Delegates to SchemaParsingConfig.setProperty.
* @param propertyId
* @param value
*/
public void setProperty(String propertyId, Object value){
config.setProperty(propertyId, value);
}
/**
* Delegates to SchemaParsingConfig.getProperty.
* @param propertyId
* @return Object
*/
public Object getProperty(String propertyId){
return config.getProperty(propertyId);
}
/**
* Delegates to SchemaParsingConfig.setEntityResolver.
* @param er XMLEntityResolver
*/
public void setEntityResolver(XMLEntityResolver er) {
config.setEntityResolver(er);
}
/**
* Delegates parsing to SchemaParsingConfig
*
* @param inputSource
* @throws IOException
*/
public void parse(XMLInputSource inputSource) throws IOException {
config.parse(inputSource);
}
/**
* Gets the document from SchemaParsingConfig
* @return Document
*/
public Document getDocument2() {
return ((SchemaParsingConfig)config).getDocument();
}
/**
* Reset SchemaParsingConfig
*/
public void reset() {
((SchemaParsingConfig)config).reset();
}
/**
* ResetNodePool on SchemaParsingConfig
*/
public void resetNodePool() {
((SchemaParsingConfig)config).resetNodePool();
}
/**
* A simple boolean based stack.
*
* @xerces.internal
*/
private static final class BooleanStack {
//
// Data
//
/** Stack depth. */
private int fDepth;
/** Stack data. */
private boolean[] fData;
//
// Constructor
//
public BooleanStack () {}
//
// Public methods
//
/** Returns the size of the stack. */
public int size() {
return fDepth;
}
/** Pushes a value onto the stack. */
public void push(boolean value) {
ensureCapacity(fDepth + 1);
fData[fDepth++] = value;
}
/** Pops a value off of the stack. */
public boolean pop() {
return fData[--fDepth];
}
/** Clears the stack. */
public void clear() {
fDepth = 0;
}
//
// Private methods
//
/** Ensures capacity. */
private void ensureCapacity(int size) {
if (fData == null) {
fData = new boolean[32];
}
else if (fData.length <= size) {
boolean[] newdata = new boolean[fData.length * 2];
System.arraycopy(fData, 0, newdata, 0, fData.length);
fData = newdata;
}
}
}
}
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