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package com.sun.org.apache.xerces.internal.impl;
import com.sun.org.apache.xerces.internal.impl.msg.XMLMessageFormatter;
import com.sun.org.apache.xerces.internal.util.SymbolTable;
import com.sun.org.apache.xerces.internal.util.XMLSymbols;
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.XMLDocumentHandler;
import com.sun.org.apache.xerces.internal.xni.XMLLocator;
import com.sun.org.apache.xerces.internal.xni.XMLResourceIdentifier;
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.XMLComponent;
import com.sun.org.apache.xerces.internal.xni.parser.XMLComponentManager;
import com.sun.org.apache.xerces.internal.xni.parser.XMLConfigurationException;
import com.sun.org.apache.xerces.internal.xni.parser.XMLDocumentFilter;
import com.sun.org.apache.xerces.internal.xni.parser.XMLDocumentSource;
/**
* This class performs namespace binding on the startElement and endElement
* method calls and passes all other methods through to the registered
* document handler. This class can be configured to only pass the
* start and end prefix mappings (start/endPrefixMapping).
*
* This component requires the following features and properties from the
* component manager that uses it:
*
* - http://xml.org/sax/features/namespaces
* - http://apache.org/xml/properties/internal/symbol-table
* - http://apache.org/xml/properties/internal/error-reporter
*
*
* @xerces.internal
*
* @author Andy Clark, IBM
*
* @version $Id: XMLNamespaceBinder.java,v 1.4 2010-11-01 04:39:41 joehw Exp $
*/
public class XMLNamespaceBinder
implements XMLComponent, XMLDocumentFilter {
//
// Constants
//
// feature identifiers
/** Feature identifier: namespaces. */
protected static final String NAMESPACES =
Constants.SAX_FEATURE_PREFIX + Constants.NAMESPACES_FEATURE;
// property identifiers
/** Property identifier: symbol table. */
protected static final String SYMBOL_TABLE =
Constants.XERCES_PROPERTY_PREFIX + Constants.SYMBOL_TABLE_PROPERTY;
/** Property identifier: error reporter. */
protected static final String ERROR_REPORTER =
Constants.XERCES_PROPERTY_PREFIX + Constants.ERROR_REPORTER_PROPERTY;
// recognized features and properties
/** Recognized features. */
private static final String[] RECOGNIZED_FEATURES = {
NAMESPACES,
};
/** Feature defaults. */
private static final Boolean[] FEATURE_DEFAULTS = {
null,
};
/** Recognized properties. */
private static final String[] RECOGNIZED_PROPERTIES = {
SYMBOL_TABLE,
ERROR_REPORTER,
};
/** Property defaults. */
private static final Object[] PROPERTY_DEFAULTS = {
null,
null,
};
//
// Data
//
// features
/** Namespaces. */
protected boolean fNamespaces;
// properties
/** Symbol table. */
protected SymbolTable fSymbolTable;
/** Error reporter. */
protected XMLErrorReporter fErrorReporter;
// handlers
/** Document handler. */
protected XMLDocumentHandler fDocumentHandler;
protected XMLDocumentSource fDocumentSource;
// settings
/** Only pass start and end prefix mapping events. */
protected boolean fOnlyPassPrefixMappingEvents;
// shared context
/** Namespace context. */
private NamespaceContext fNamespaceContext;
// temp vars
/** Attribute QName. */
private QName fAttributeQName = new QName();
//
// Constructors
//
/** Default constructor. */
public XMLNamespaceBinder() {
} // ()
//
// Public methods
//
// settings
/**
* Sets whether the namespace binder only passes the prefix mapping
* events to the registered document handler or passes all document
* events.
*
* @param onlyPassPrefixMappingEvents True to pass only the prefix
* mapping events; false to pass
* all events.
*/
public void setOnlyPassPrefixMappingEvents(boolean onlyPassPrefixMappingEvents) {
fOnlyPassPrefixMappingEvents = onlyPassPrefixMappingEvents;
} // setOnlyPassPrefixMappingEvents(boolean)
/**
* Returns true if the namespace binder only passes the prefix mapping
* events to the registered document handler; false if the namespace
* binder passes all document events.
*/
public boolean getOnlyPassPrefixMappingEvents() {
return fOnlyPassPrefixMappingEvents;
} // getOnlyPassPrefixMappingEvents():boolean
//
// XMLComponent methods
//
/**
* Resets the component. The component can query the component manager
* about any features and properties that affect the operation of the
* component.
*
* @param componentManager The component manager.
*
* @throws SAXException Thrown by component on initialization error.
* For example, if a feature or property is
* required for the operation of the component, the
* component manager may throw a
* SAXNotRecognizedException or a
* SAXNotSupportedException.
*/
public void reset(XMLComponentManager componentManager)
throws XNIException {
// features
fNamespaces = componentManager.getFeature(NAMESPACES, true);
// Xerces properties
fSymbolTable = (SymbolTable)componentManager.getProperty(SYMBOL_TABLE);
fErrorReporter = (XMLErrorReporter)componentManager.getProperty(ERROR_REPORTER);
} // reset(XMLComponentManager)
/**
* Returns a list of feature identifiers that are recognized by
* this component. This method may return null if no features
* are recognized by this component.
*/
public String[] getRecognizedFeatures() {
return (String[])(RECOGNIZED_FEATURES.clone());
} // getRecognizedFeatures():String[]
/**
* Sets the state of a feature. This method is called by the component
* manager any time after reset when a feature changes state.
*
* Note: Components should silently ignore features
* that do not affect the operation of the component.
*
* @param featureId The feature identifier.
* @param state The state of the feature.
*
* @throws SAXNotRecognizedException The component should not throw
* this exception.
* @throws SAXNotSupportedException The component should not throw
* this exception.
*/
public void setFeature(String featureId, boolean state)
throws XMLConfigurationException {
} // setFeature(String,boolean)
/**
* Returns a list of property identifiers that are recognized by
* this component. This method may return null if no properties
* are recognized by this component.
*/
public String[] getRecognizedProperties() {
return (String[])(RECOGNIZED_PROPERTIES.clone());
} // getRecognizedProperties():String[]
/**
* Sets the value of a property during parsing.
*
* @param propertyId
* @param value
*/
public void setProperty(String propertyId, Object value)
throws XMLConfigurationException {
// Xerces properties
if (propertyId.startsWith(Constants.XERCES_PROPERTY_PREFIX)) {
final int suffixLength = propertyId.length() - Constants.XERCES_PROPERTY_PREFIX.length();
if (suffixLength == Constants.SYMBOL_TABLE_PROPERTY.length() &&
propertyId.endsWith(Constants.SYMBOL_TABLE_PROPERTY)) {
fSymbolTable = (SymbolTable)value;
}
else if (suffixLength == Constants.ERROR_REPORTER_PROPERTY.length() &&
propertyId.endsWith(Constants.ERROR_REPORTER_PROPERTY)) {
fErrorReporter = (XMLErrorReporter)value;
}
return;
}
} // setProperty(String,Object)
/**
* Returns the default state for a feature, or null if this
* component does not want to report a default value for this
* feature.
*
* @param featureId The feature identifier.
*
* @since Xerces 2.2.0
*/
public Boolean getFeatureDefault(String featureId) {
for (int i = 0; i < RECOGNIZED_FEATURES.length; i++) {
if (RECOGNIZED_FEATURES[i].equals(featureId)) {
return FEATURE_DEFAULTS[i];
}
}
return null;
} // getFeatureDefault(String):Boolean
/**
* Returns the default state for a property, or null if this
* component does not want to report a default value for this
* property.
*
* @param propertyId The property identifier.
*
* @since Xerces 2.2.0
*/
public Object getPropertyDefault(String propertyId) {
for (int i = 0; i < RECOGNIZED_PROPERTIES.length; i++) {
if (RECOGNIZED_PROPERTIES[i].equals(propertyId)) {
return PROPERTY_DEFAULTS[i];
}
}
return null;
} // getPropertyDefault(String):Object
//
// XMLDocumentSource methods
//
/** Sets the document handler to receive information about the document. */
public void setDocumentHandler(XMLDocumentHandler documentHandler) {
fDocumentHandler = documentHandler;
} // setDocumentHandler(XMLDocumentHandler)
/** Returns the document handler */
public XMLDocumentHandler getDocumentHandler() {
return fDocumentHandler;
} // setDocumentHandler(XMLDocumentHandler)
//
// XMLDocumentHandler methods
//
/** Sets the document source */
public void setDocumentSource(XMLDocumentSource source){
fDocumentSource = source;
} // setDocumentSource
/** Returns the document source */
public XMLDocumentSource getDocumentSource (){
return fDocumentSource;
} // getDocumentSource
/**
* This method notifies the start of a general entity.
*
* Note: This method is not called for entity references
* appearing as part of attribute values.
*
* @param name The name of the general entity.
* @param identifier The resource identifier.
* @param encoding The auto-detected IANA encoding name of the entity
* stream. This value will be null in those situations
* where the entity encoding is not auto-detected (e.g.
* internal entities or a document entity that is
* parsed from a java.io.Reader).
* @param augs Additional information that may include infoset augmentations
*
* @exception XNIException Thrown by handler to signal an error.
*/
public void startGeneralEntity(String name,
XMLResourceIdentifier identifier,
String encoding, Augmentations augs)
throws XNIException {
if (fDocumentHandler != null && !fOnlyPassPrefixMappingEvents) {
fDocumentHandler.startGeneralEntity(name, identifier, encoding, augs);
}
} // startEntity(String,String,String,String,String)
/**
* Notifies of the presence of a TextDecl line in an entity. If present,
* this method will be called immediately following the startEntity call.
*
* Note: This method will never be called for the
* document entity; it is only called for external general entities
* referenced in document content.
*
* Note: This method is not called for entity references
* appearing as part of attribute values.
*
* @param version The XML version, or null if not specified.
* @param encoding The IANA encoding name of the entity.
* @param augs Additional information that may include infoset augmentations
*
* @throws XNIException Thrown by handler to signal an error.
*/
public void textDecl(String version, String encoding, Augmentations augs)
throws XNIException {
if (fDocumentHandler != null && !fOnlyPassPrefixMappingEvents) {
fDocumentHandler.textDecl(version, encoding, augs);
}
} // textDecl(String,String)
/**
* The start of the document.
*
* @param locator The system identifier of the entity if the entity
* is external, null otherwise.
* @param encoding The auto-detected IANA encoding name of the entity
* stream. This value will be null in those situations
* where the entity encoding is not auto-detected (e.g.
* internal entities or a document entity that is
* parsed from a java.io.Reader).
* @param namespaceContext
* The namespace context in effect at the
* start of this document.
* This object represents the current context.
* Implementors of this class are responsible
* for copying the namespace bindings from the
* the current context (and its parent contexts)
* if that information is important.
* @param augs Additional information that may include infoset augmentations
*
* @throws XNIException Thrown by handler to signal an error.
*/
public void startDocument(XMLLocator locator, String encoding,
NamespaceContext namespaceContext, Augmentations augs)
throws XNIException {
fNamespaceContext = namespaceContext;
if (fDocumentHandler != null && !fOnlyPassPrefixMappingEvents) {
fDocumentHandler.startDocument(locator, encoding, namespaceContext, augs);
}
} // startDocument(XMLLocator,String)
/**
* Notifies of the presence of an XMLDecl line in the document. If
* present, this method will be called immediately following the
* startDocument call.
*
* @param version The XML version.
* @param encoding The IANA encoding name of the document, or null if
* not specified.
* @param standalone The standalone value, or null if not specified.
* @param augs Additional information that may include infoset augmentations
*
* @throws XNIException Thrown by handler to signal an error.
*/
public void xmlDecl(String version, String encoding, String standalone, Augmentations augs)
throws XNIException {
if (fDocumentHandler != null && !fOnlyPassPrefixMappingEvents) {
fDocumentHandler.xmlDecl(version, encoding, standalone, augs);
}
} // xmlDecl(String,String,String)
/**
* Notifies of the presence of the DOCTYPE line in the document.
*
* @param rootElement The name of the root element.
* @param publicId The public identifier if an external DTD or null
* if the external DTD is specified using SYSTEM.
* @param systemId The system identifier if an external DTD, null
* otherwise.
* @param augs Additional information that may include infoset augmentations
*
* @throws XNIException Thrown by handler to signal an error.
*/
public void doctypeDecl(String rootElement,
String publicId, String systemId, Augmentations augs)
throws XNIException {
if (fDocumentHandler != null && !fOnlyPassPrefixMappingEvents) {
fDocumentHandler.doctypeDecl(rootElement, publicId, systemId, augs);
}
} // doctypeDecl(String,String,String)
/**
* A comment.
*
* @param text The text in the comment.
* @param augs Additional information that may include infoset augmentations
*
* @throws XNIException Thrown by application to signal an error.
*/
public void comment(XMLString text, Augmentations augs) throws XNIException {
if (fDocumentHandler != null && !fOnlyPassPrefixMappingEvents) {
fDocumentHandler.comment(text, augs);
}
} // comment(XMLString)
/**
* A processing instruction. Processing instructions consist of a
* target name and, optionally, text data. The data is only meaningful
* to the application.
*
* Typically, a processing instruction's data will contain a series
* of pseudo-attributes. These pseudo-attributes follow the form of
* element attributes but are not 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
*
* @throws XNIException Thrown by handler to signal an error.
*/
public void processingInstruction(String target, XMLString data, Augmentations augs)
throws XNIException {
if (fDocumentHandler != null && !fOnlyPassPrefixMappingEvents) {
fDocumentHandler.processingInstruction(target, data, augs);
}
} // processingInstruction(String,XMLString)
/**
* Binds the namespaces. This method will handle calling the
* document handler to start the prefix mappings.
*
* Note: This method makes use of the
* fAttributeQName variable. Any contents of the variable will
* be destroyed. Caller should copy the values out of this
* temporary variable before calling this method.
*
* @param element The name of the element.
* @param attributes The element attributes.
* @param augs Additional information that may include infoset augmentations
*
* @throws XNIException Thrown by handler to signal an error.
*/
public void startElement(QName element, XMLAttributes attributes, Augmentations augs)
throws XNIException {
if (fNamespaces) {
handleStartElement(element, attributes, augs, false);
}
else if (fDocumentHandler != null) {
fDocumentHandler.startElement(element, attributes, augs);
}
} // startElement(QName,XMLAttributes)
/**
* An empty element.
*
* @param element The name of the element.
* @param attributes The element attributes.
* @param augs Additional information that may include infoset augmentations
*
* @throws XNIException Thrown by handler to signal an error.
*/
public void emptyElement(QName element, XMLAttributes attributes, Augmentations augs)
throws XNIException {
if (fNamespaces) {
handleStartElement(element, attributes, augs, true);
handleEndElement(element, augs, true);
}
else if (fDocumentHandler != null) {
fDocumentHandler.emptyElement(element, attributes, augs);
}
} // emptyElement(QName,XMLAttributes)
/**
* Character content.
*
* @param text The content.
* @param augs Additional information that may include infoset augmentations
*
* @throws XNIException Thrown by handler to signal an error.
*/
public void characters(XMLString text, Augmentations augs) throws XNIException {
if (fDocumentHandler != null && !fOnlyPassPrefixMappingEvents) {
fDocumentHandler.characters(text, augs);
}
} // characters(XMLString)
/**
* 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
*
* @throws XNIException Thrown by handler to signal an error.
*/
public void ignorableWhitespace(XMLString text, Augmentations augs) throws XNIException {
if (fDocumentHandler != null && !fOnlyPassPrefixMappingEvents) {
fDocumentHandler.ignorableWhitespace(text, augs);
}
} // ignorableWhitespace(XMLString)
/**
* The end of an element.
*
* @param element The name of the element.
* @param augs Additional information that may include infoset augmentations
*
* @throws XNIException Thrown by handler to signal an error.
*/
public void endElement(QName element, Augmentations augs) throws XNIException {
if (fNamespaces) {
handleEndElement(element, augs, false);
}
else if (fDocumentHandler != null) {
fDocumentHandler.endElement(element, augs);
}
} // endElement(QName)
/**
* The start of a CDATA section.
* @param augs Additional information that may include infoset augmentations
*
* @throws XNIException Thrown by handler to signal an error.
*/
public void startCDATA(Augmentations augs) throws XNIException {
if (fDocumentHandler != null && !fOnlyPassPrefixMappingEvents) {
fDocumentHandler.startCDATA(augs);
}
} // startCDATA()
/**
* The end of a CDATA section.
* @param augs Additional information that may include infoset augmentations
*
* @throws XNIException Thrown by handler to signal an error.
*/
public void endCDATA(Augmentations augs) throws XNIException {
if (fDocumentHandler != null && !fOnlyPassPrefixMappingEvents) {
fDocumentHandler.endCDATA(augs);
}
} // endCDATA()
/**
* 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 {
if (fDocumentHandler != null && !fOnlyPassPrefixMappingEvents) {
fDocumentHandler.endDocument(augs);
}
} // endDocument()
/**
* This method notifies the end of a general entity.
*
* Note: This method is not called for entity references
* appearing as part of attribute values.
*
* @param name The name of the entity.
* @param augs Additional information that may include infoset augmentations
*
* @exception XNIException
* Thrown by handler to signal an error.
*/
public void endGeneralEntity(String name, Augmentations augs) throws XNIException {
if (fDocumentHandler != null && !fOnlyPassPrefixMappingEvents) {
fDocumentHandler.endGeneralEntity(name, augs);
}
} // endEntity(String)
//
// Protected methods
//
/** Handles start element. */
protected void handleStartElement(QName element, XMLAttributes attributes,
Augmentations augs,
boolean isEmpty) throws XNIException {
// add new namespace context
fNamespaceContext.pushContext();
if (element.prefix == XMLSymbols.PREFIX_XMLNS) {
fErrorReporter.reportError(XMLMessageFormatter.XMLNS_DOMAIN,
"ElementXMLNSPrefix",
new Object[]{element.rawname},
XMLErrorReporter.SEVERITY_FATAL_ERROR);
}
// search for new namespace bindings
int length = attributes.getLength();
for (int i = 0; i < length; i++) {
String localpart = attributes.getLocalName(i);
String prefix = attributes.getPrefix(i);
// when it's of form xmlns="..." or xmlns:prefix="...",
// it's a namespace declaration. but prefix:xmlns="..." isn't.
if (prefix == XMLSymbols.PREFIX_XMLNS ||
prefix == XMLSymbols.EMPTY_STRING && localpart == XMLSymbols.PREFIX_XMLNS) {
// get the internalized value of this attribute
String uri = fSymbolTable.addSymbol(attributes.getValue(i));
// 1. "xmlns" can't be bound to any namespace
if (prefix == XMLSymbols.PREFIX_XMLNS && localpart == XMLSymbols.PREFIX_XMLNS) {
fErrorReporter.reportError(XMLMessageFormatter.XMLNS_DOMAIN,
"CantBindXMLNS",
new Object[]{attributes.getQName(i)},
XMLErrorReporter.SEVERITY_FATAL_ERROR);
}
// 2. the namespace for "xmlns" can't be bound to any prefix
if (uri == NamespaceContext.XMLNS_URI) {
fErrorReporter.reportError(XMLMessageFormatter.XMLNS_DOMAIN,
"CantBindXMLNS",
new Object[]{attributes.getQName(i)},
XMLErrorReporter.SEVERITY_FATAL_ERROR);
}
// 3. "xml" can't be bound to any other namespace than it's own
if (localpart == XMLSymbols.PREFIX_XML) {
if (uri != NamespaceContext.XML_URI) {
fErrorReporter.reportError(XMLMessageFormatter.XMLNS_DOMAIN,
"CantBindXML",
new Object[]{attributes.getQName(i)},
XMLErrorReporter.SEVERITY_FATAL_ERROR);
}
}
// 4. the namespace for "xml" can't be bound to any other prefix
else {
if (uri ==NamespaceContext.XML_URI) {
fErrorReporter.reportError(XMLMessageFormatter.XMLNS_DOMAIN,
"CantBindXML",
new Object[]{attributes.getQName(i)},
XMLErrorReporter.SEVERITY_FATAL_ERROR);
}
}
prefix = localpart != XMLSymbols.PREFIX_XMLNS ? localpart : XMLSymbols.EMPTY_STRING;
// http://www.w3.org/TR/1999/REC-xml-names-19990114/#dt-prefix
// We should only report an error if there is a prefix,
// that is, the local part is not "xmlns". -SG
// Since this is an error condition in XML 1.0,
// and should be relatively uncommon in XML 1.1,
// making this test into a method call to reuse code
// should be acceptable. - NG
if(prefixBoundToNullURI(uri, localpart)) {
fErrorReporter.reportError(XMLMessageFormatter.XMLNS_DOMAIN,
"EmptyPrefixedAttName",
new Object[]{attributes.getQName(i)},
XMLErrorReporter.SEVERITY_FATAL_ERROR);
continue;
}
// declare prefix in context
fNamespaceContext.declarePrefix(prefix, uri.length() != 0 ? uri : null);
}
}
// bind the element
String prefix = element.prefix != null
? element.prefix : XMLSymbols.EMPTY_STRING;
element.uri = fNamespaceContext.getURI(prefix);
if (element.prefix == null && element.uri != null) {
element.prefix = XMLSymbols.EMPTY_STRING;
}
if (element.prefix != null && element.uri == null) {
fErrorReporter.reportError(XMLMessageFormatter.XMLNS_DOMAIN,
"ElementPrefixUnbound",
new Object[]{element.prefix, element.rawname},
XMLErrorReporter.SEVERITY_FATAL_ERROR);
}
// bind the attributes
for (int i = 0; i < length; i++) {
attributes.getName(i, fAttributeQName);
String aprefix = fAttributeQName.prefix != null
? fAttributeQName.prefix : XMLSymbols.EMPTY_STRING;
String arawname = fAttributeQName.rawname;
if (arawname == XMLSymbols.PREFIX_XMLNS) {
fAttributeQName.uri = fNamespaceContext.getURI(XMLSymbols.PREFIX_XMLNS);
attributes.setName(i, fAttributeQName);
}
else if (aprefix != XMLSymbols.EMPTY_STRING) {
fAttributeQName.uri = fNamespaceContext.getURI(aprefix);
if (fAttributeQName.uri == null) {
fErrorReporter.reportError(XMLMessageFormatter.XMLNS_DOMAIN,
"AttributePrefixUnbound",
new Object[]{element.rawname,arawname,aprefix},
XMLErrorReporter.SEVERITY_FATAL_ERROR);
}
attributes.setName(i, fAttributeQName);
}
}
// verify that duplicate attributes don't exist
// Example: