org.apache.xml.dtm.ref.sax2dtm
Class SAX2DTM

java.lang.Object
  org.apache.xml.dtm.ref.DTMDefaultBase
      org.apache.xml.dtm.ref.DTMDefaultBaseTraversers
          org.apache.xml.dtm.ref.DTMDefaultBaseIterators
              org.apache.xml.dtm.ref.sax2dtm.SAX2DTM

All Implemented Interfaces:

org.xml.sax.ContentHandler, org.xml.sax.ext.DeclHandler, org.xml.sax.DTDHandler, DTM, org.xml.sax.EntityResolver, org.xml.sax.ErrorHandler, org.xml.sax.ext.LexicalHandler

Direct Known Subclasses:

SAX2RTFDTM

public class SAX2DTM

extends DTMDefaultBaseIterators

implements org.xml.sax.EntityResolver, org.xml.sax.DTDHandler, org.xml.sax.ContentHandler, org.xml.sax.ErrorHandler, org.xml.sax.ext.DeclHandler, org.xml.sax.ext.LexicalHandler

This class implements a DTM that tends to be optimized more for speed than for compactness, that is constructed via SAX2 ContentHandler events.

Nested Class Summary

Nested classes inherited from class org.apache.xml.dtm.ref.DTMDefaultBaseIterators

Nested classes inherited from class org.apache.xml.dtm.ref.DTMDefaultBaseTraversers

Field Summary

private static boolean	DEBUG Set true to monitor SAX events and similar diagnostic info.
private static int	ENTITY_FIELD_NAME m_entities name offset.
private static int	ENTITY_FIELD_NOTATIONNAME m_entities notation name offset.
private static int	ENTITY_FIELD_PUBLICID m_entities public ID offset.
private static int	ENTITY_FIELD_SYSTEMID m_entities system ID offset.
private static int	ENTITY_FIELDS_PER Number of entries per record for m_entities.
protected FastStringBuffer	m_chars All the character content, including attribute values, are stored in this buffer.
private int	m_coalescedTextType Type of coalesced text block.
protected IntStack	m_contextIndexes Namespace support, only relevent at construction time.
protected SuballocatedIntVector	m_data This vector holds offset and length data.
protected SuballocatedIntVector	m_dataOrQName Data or qualified name values, one array element for each node.
protected boolean	m_endDocumentOccured End document has been reached.
private Vector	m_entities Vector of entities.
(package private) static String[]	m_fixednames fixed dom-style names.
protected Hashtable	m_idAttributes This table holds the ID string to node associations, for XML IDs.
private IncrementalSAXSource	m_incrementalSAXSource If we're building the model incrementally on demand, we need to be able to tell the source when to send us more data.
private boolean	m_insideDTD We are inside the DTD.
private org.xml.sax.Locator	m_locator The SAX Document locator
protected IntStack	m_parents The parent stack, needed only for construction.
(package private) boolean	m_pastFirstElement
protected Vector	m_prefixMappings Namespace support, only relevent at construction time.
protected int	m_previous The current previous node, needed only for construction time.
protected IntVector	m_sourceColumn Made protected for access by SAX2RTFDTM.
protected IntVector	m_sourceLine Made protected for access by SAX2RTFDTM.
protected StringVector	m_sourceSystemId Made protected for access by SAX2RTFDTM.
private int	m_textPendingStart The starting offset within m_chars for the text or CDATA_SECTION node currently being acumulated, or -1 if there is no text node in progress
private int	m_textType Type of next characters() event within text block in prgress.
protected boolean	m_useSourceLocationProperty Describes whether information about document source location should be maintained or not.
private DTMStringPool	m_valuesOrPrefixes pool of string values that come as strings.
protected DTMTreeWalker	m_walker Tree Walker for dispatchToEvents.

Fields inherited from class org.apache.xml.dtm.ref.DTMDefaultBase

m_blocksize, m_documentBaseURI, m_dtmIdent, m_elemIndexes, m_expandedNameTable, m_exptype, m_firstch, m_indexing, m_initialblocksize, m_mgr, m_mgrDefault, m_namespaceDeclSetElements, m_namespaceDeclSets, m_nextsib, m_parent, m_prevsib, m_shouldStripWhitespaceStack, m_shouldStripWS, m_size, m_traversers, m_wsfilter, m_xstrf, NOTPROCESSED

Fields inherited from interface org.apache.xml.dtm.DTM

ATTRIBUTE_NODE, CDATA_SECTION_NODE, COMMENT_NODE, DOCUMENT_FRAGMENT_NODE, DOCUMENT_NODE, DOCUMENT_TYPE_NODE, ELEMENT_NODE, ENTITY_NODE, ENTITY_REFERENCE_NODE, NAMESPACE_NODE, NOTATION_NODE, NTYPES, NULL, PROCESSING_INSTRUCTION_NODE, TEXT_NODE

Constructor Summary

SAX2DTM(DTMManager mgr, javax.xml.transform.Source source, int dtmIdentity, DTMWSFilter whiteSpaceFilter, XMLStringFactory xstringfactory, boolean doIndexing)
Construct a SAX2DTM object ready to be constructed from SAX2 ContentHandler events.

Method Summary

protected int	_dataOrQName(int identity) Get the data or qualified name for the given node identity.
protected int	addNode(int type, int expandedTypeID, int parentIndex, int previousSibling, int dataOrPrefix, boolean canHaveFirstChild) Construct the node map from the node.
void	attributeDecl(String eName, String aName, String type, String valueDefault, String value) Report an attribute type declaration.
void	characters(char[] ch, int start, int length) Receive notification of character data inside an element.
protected void	charactersFlush() Check whether accumulated text should be stripped; if not, append the appropriate flavor of text/cdata node.
void	clearCoRoutine() Ask the CoRoutine parser to doTerminate and clear the reference.
void	clearCoRoutine(boolean callDoTerminate) Ask the CoRoutine parser to doTerminate and clear the reference.
void	comment(char[] ch, int start, int length) Report an XML comment anywhere in the document.
protected boolean	declAlreadyDeclared(String prefix) Check if a declaration has already been made for a given prefix.
void	dispatchCharactersEvents(int nodeHandle, org.xml.sax.ContentHandler ch, boolean normalize) Directly call the characters method on the passed ContentHandler for the string-value of the given node (see http://www.w3.org/TR/xpath#data-model for the definition of a node's string-value).
void	dispatchToEvents(int nodeHandle, org.xml.sax.ContentHandler ch) Directly create SAX parser events from a subtree.
void	elementDecl(String name, String model) Report an element type declaration.
void	endCDATA() Report the end of a CDATA section.
void	endDocument() Receive notification of the end of the document.
void	endDTD() Report the end of DTD declarations.
void	endElement(String uri, String localName, String qName) Receive notification of the end of an element.
void	endEntity(String name) Report the end of an entity.
void	endPrefixMapping(String prefix) Receive notification of the end of a Namespace mapping.
void	error(org.xml.sax.SAXParseException e) Receive notification of a recoverable parser error.
void	externalEntityDecl(String name, String publicId, String systemId) Report a parsed external entity declaration.
void	fatalError(org.xml.sax.SAXParseException e) Report a fatal XML parsing error.
int	getAttributeNode(int nodeHandle, String namespaceURI, String name) Retrieves an attribute node by by qualified name and namespace URI.
org.xml.sax.ContentHandler	getContentHandler() getContentHandler returns "our SAX builder" -- the thing that someone else should send SAX events to in order to extend this DTM model.
org.xml.sax.ext.DeclHandler	getDeclHandler() Return this DTM's DeclHandler.
String	getDocumentTypeDeclarationPublicIdentifier() Return the public identifier of the external subset, normalized as described in 4.2.2 External Entities [XML].
String	getDocumentTypeDeclarationSystemIdentifier() A document type declaration information item has the following properties: 1.
org.xml.sax.DTDHandler	getDTDHandler() Return this DTM's DTDHandler.
int	getElementById(String elementId) Returns the Element whose ID is given by elementId.
org.xml.sax.EntityResolver	getEntityResolver() Return this DTM's EntityResolver.
org.xml.sax.ErrorHandler	getErrorHandler() Return this DTM's ErrorHandler.
org.xml.sax.ext.LexicalHandler	getLexicalHandler() Return this DTM's lexical handler.
String	getLocalName(int nodeHandle) Given a node handle, return its XPath-style localname.
String	getNamespaceURI(int nodeHandle) Given a node handle, return its DOM-style namespace URI (As defined in Namespaces, this is the declared URI which this node's prefix -- or default in lieu thereof -- was mapped to.)
protected int	getNextNodeIdentity(int identity) Get the next node identity value in the list, and call the iterator if it hasn't been added yet.
String	getNodeName(int nodeHandle) Given a node handle, return its DOM-style node name.
String	getNodeNameX(int nodeHandle) Given a node handle, return the XPath node name.
String	getNodeValue(int nodeHandle) Given a node handle, return its node value.
protected int	getNumberOfNodes() Get the number of nodes that have been added.
String	getPrefix(int nodeHandle) Given a namespace handle, return the prefix that the namespace decl is mapping.
private String	getPrefix(String qname, String uri) Get a prefix either from the qname or from the uri mapping, or just make one up!
javax.xml.transform.SourceLocator	getSourceLocatorFor(int node) Retrieve the SourceLocator associated with a specific node.
XMLString	getStringValue(int nodeHandle) Get the string-value of a node as a String object (see http://www.w3.org/TR/xpath#data-model for the definition of a node's string-value).
String	getUnparsedEntityURI(String name) The getUnparsedEntityURI function returns the URI of the unparsed entity with the specified name in the same document as the context node (see [3.3 Unparsed Entities]).
void	ignorableWhitespace(char[] ch, int start, int length) Receive notification of ignorable whitespace in element content.
void	internalEntityDecl(String name, String value) Report an internal entity declaration.
boolean	isAttributeSpecified(int attributeHandle) 5.
private boolean	isTextType(int type) Bottleneck determination of text type.
boolean	needsTwoThreads()
protected boolean	nextNode() This method should try and build one or more nodes in the table.
void	notationDecl(String name, String publicId, String systemId) Receive notification of a notation declaration.
void	processingInstruction(String target, String data) Receive notification of a processing instruction.
org.xml.sax.InputSource	resolveEntity(String publicId, String systemId) Resolve an external entity.
void	setDocumentLocator(org.xml.sax.Locator locator) Receive a Locator object for document events.
void	setIDAttribute(String id, int elem) Set an ID string to node association in the ID table.
void	setIncrementalSAXSource(IncrementalSAXSource incrementalSAXSource) Bind a IncrementalSAXSource to this DTM.
void	setProperty(String property, Object value) Set a run time property for this DTM instance.
void	skippedEntity(String name) Receive notification of a skipped entity.
void	startCDATA() Report the start of a CDATA section.
void	startDocument() Receive notification of the beginning of the document.
void	startDTD(String name, String publicId, String systemId) Report the start of DTD declarations, if any.
void	startElement(String uri, String localName, String qName, org.xml.sax.Attributes attributes) Receive notification of the start of an element.
void	startEntity(String name) Report the beginning of an entity in content.
void	startPrefixMapping(String prefix, String uri) Receive notification of the start of a Namespace mapping.
void	unparsedEntityDecl(String name, String publicId, String systemId, String notationName) Receive notification of an unparsed entity declaration.
void	warning(org.xml.sax.SAXParseException e) Receive notification of a parser warning.

Methods inherited from class org.apache.xml.dtm.ref.DTMDefaultBaseIterators

getAxisIterator, getTypedAxisIterator

Methods inherited from class org.apache.xml.dtm.ref.DTMDefaultBaseTraversers

getAxisTraverser

Methods inherited from class org.apache.xml.dtm.ref.DTMDefaultBase

_exptype, _firstch, _level, _nextsib, _parent, _prevsib, _type, appendChild, appendTextChild, declareNamespaceInContext, documentRegistration, documentRelease, dumpDTM, dumpNode, ensureSizeOfIndex, error, findGTE, findInSortedSuballocatedIntVector, findNamespaceContext, getDocument, getDocumentAllDeclarationsProcessed, getDocumentBaseURI, getDocumentEncoding, getDocumentRoot, getDocumentStandalone, getDocumentSystemIdentifier, getDocumentVersion, getDTMIDs, getExpandedTypeID, getExpandedTypeID, getFirstAttribute, getFirstChild, getFirstNamespaceNode, getLastChild, getLevel, getLocalNameFromExpandedNameID, getManager, getNamespaceFromExpandedNameID, getNamespaceType, getNextAttribute, getNextNamespaceNode, getNextSibling, getNode, getNodeType, getOwnerDocument, getParent, getPreviousSibling, getShouldStripWhitespace, getStringValueChunk, getStringValueChunkCount, hasChildNodes, indexNode, isCharacterElementContentWhitespace, isDocumentAllDeclarationsProcessed, isNodeAfter, isSupported, makeNodeHandle, makeNodeIdentity, popShouldStripWhitespace, pushShouldStripWhitespace, setDocumentBaseURI, setFeature, setShouldStripWhitespace, supportsPreStripping

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

DEBUG

private static final boolean DEBUG

Set true to monitor SAX events and similar diagnostic info.

See Also:

Constant Field Values

m_incrementalSAXSource

private IncrementalSAXSource m_incrementalSAXSource

If we're building the model incrementally on demand, we need to be able to tell the source when to send us more data. Note that if this has not been set, and you attempt to read ahead of the current build point, we'll probably throw a null-pointer exception. We could try to wait-and-retry instead, as a very poor fallback, but that has all the known problems with multithreading on multiprocessors and we Don't Want to Go There.

See Also:

setIncrementalSAXSource

m_chars

protected FastStringBuffer m_chars

All the character content, including attribute values, are stored in this buffer. %REVIEW% Should this have an option of being shared across DTMs? Sequentially only; not threadsafe... Currently, I think not. %REVIEW% Initial size was pushed way down to reduce weight of RTFs. pending reduction in number of RTF DTMs. Now that we're sharing a DTM between RTFs, and tail-pruning... consider going back to the larger/faster. Made protected rather than private so SAX2RTFDTM can access it.

m_data

protected SuballocatedIntVector m_data

This vector holds offset and length data.

m_parents

protected transient IntStack m_parents

The parent stack, needed only for construction. Made protected rather than private so SAX2RTFDTM can access it.

m_previous

protected transient int m_previous

The current previous node, needed only for construction time. Made protected rather than private so SAX2RTFDTM can access it.

m_prefixMappings

protected transient Vector m_prefixMappings

Namespace support, only relevent at construction time. Made protected rather than private so SAX2RTFDTM can access it.

m_contextIndexes

protected transient IntStack m_contextIndexes

Namespace support, only relevent at construction time. Made protected rather than private so SAX2RTFDTM can access it.

m_textType

private transient int m_textType

Type of next characters() event within text block in prgress.

m_coalescedTextType

private transient int m_coalescedTextType

Type of coalesced text block. See logic in the characters() method.

m_locator

private transient org.xml.sax.Locator m_locator

The SAX Document locator

m_insideDTD

private transient boolean m_insideDTD

We are inside the DTD. This is used for ignoring comments.

m_walker

protected DTMTreeWalker m_walker

Tree Walker for dispatchToEvents.

m_valuesOrPrefixes

private DTMStringPool m_valuesOrPrefixes

pool of string values that come as strings.

m_endDocumentOccured

protected boolean m_endDocumentOccured

End document has been reached. Made protected rather than private so SAX2RTFDTM can access it.

m_dataOrQName

protected SuballocatedIntVector m_dataOrQName

Data or qualified name values, one array element for each node.

m_idAttributes

protected Hashtable m_idAttributes

This table holds the ID string to node associations, for XML IDs.

m_fixednames

static final String[] m_fixednames

fixed dom-style names.

m_entities

private Vector m_entities

Vector of entities. Each record is composed of four Strings: publicId, systemID, notationName, and name.

ENTITY_FIELD_PUBLICID

private static final int ENTITY_FIELD_PUBLICID

m_entities public ID offset.

See Also:

Constant Field Values

ENTITY_FIELD_SYSTEMID

private static final int ENTITY_FIELD_SYSTEMID

m_entities system ID offset.

See Also:

Constant Field Values

ENTITY_FIELD_NOTATIONNAME

private static final int ENTITY_FIELD_NOTATIONNAME

m_entities notation name offset.

See Also:

Constant Field Values

ENTITY_FIELD_NAME

private static final int ENTITY_FIELD_NAME

m_entities name offset.

See Also:

Constant Field Values

ENTITY_FIELDS_PER

private static final int ENTITY_FIELDS_PER

Number of entries per record for m_entities.

See Also:

Constant Field Values

m_textPendingStart

private int m_textPendingStart

The starting offset within m_chars for the text or CDATA_SECTION node currently being acumulated, or -1 if there is no text node in progress

m_useSourceLocationProperty

protected boolean m_useSourceLocationProperty

Describes whether information about document source location should be maintained or not. Made protected for access by SAX2RTFDTM.

m_sourceSystemId

protected StringVector m_sourceSystemId

Made protected for access by SAX2RTFDTM.

m_sourceLine

protected IntVector m_sourceLine

Made protected for access by SAX2RTFDTM.

m_sourceColumn

protected IntVector m_sourceColumn

Made protected for access by SAX2RTFDTM.

m_pastFirstElement

boolean m_pastFirstElement

Constructor Detail

SAX2DTM

public SAX2DTM(DTMManager mgr,
               javax.xml.transform.Source source,
               int dtmIdentity,
               DTMWSFilter whiteSpaceFilter,
               XMLStringFactory xstringfactory,
               boolean doIndexing)

Construct a SAX2DTM object ready to be constructed from SAX2 ContentHandler events.

Parameters:

mgr - The DTMManager who owns this DTM.

source - the JAXP 1.1 Source object for this DTM.

dtmIdentity - The DTM identity ID for this DTM.

whiteSpaceFilter - The white space filter for this DTM, which may be null.

xstringfactory - XMLString factory for creating character content.

doIndexing - true if the caller considers it worth it to use indexing schemes.

Method Detail

_dataOrQName

protected int _dataOrQName(int identity)

Get the data or qualified name for the given node identity.

Parameters:

identity - The node identity.

Returns:

The data or qualified name, or DTM.NULL.

clearCoRoutine

public void clearCoRoutine()

Ask the CoRoutine parser to doTerminate and clear the reference.

clearCoRoutine

public void clearCoRoutine(boolean callDoTerminate)

Ask the CoRoutine parser to doTerminate and clear the reference. If the CoRoutine parser has already been cleared, this will have no effect.

Parameters:

callDoTerminate - true of doTerminate should be called on the coRoutine parser.

setIncrementalSAXSource

public void setIncrementalSAXSource(IncrementalSAXSource incrementalSAXSource)

Bind a IncrementalSAXSource to this DTM. If we discover we need nodes that have not yet been built, we will ask this object to send us more events, and it will manage interactions with its data sources. Note that we do not actually build the IncrementalSAXSource, since we don't know what source it's reading from, what thread that source will run in, or when it will run.

Parameters:

incrementalSAXSource - The parser that we want to recieve events from on demand.

getContentHandler

public org.xml.sax.ContentHandler getContentHandler()

getContentHandler returns "our SAX builder" -- the thing that someone else should send SAX events to in order to extend this DTM model. %REVIEW% Should this return null if constrution already done/begun?

Specified by:

getContentHandler in interface DTM

Returns:

null if this model doesn't respond to SAX events, "this" if the DTM object has a built-in SAX ContentHandler, the IncrementalSAXSource if we're bound to one and should receive the SAX stream via it for incremental build purposes...

getLexicalHandler

public org.xml.sax.ext.LexicalHandler getLexicalHandler()

Return this DTM's lexical handler. %REVIEW% Should this return null if constrution already done/begun?

Specified by:

getLexicalHandler in interface DTM

Returns:

null if this model doesn't respond to lexical SAX events, "this" if the DTM object has a built-in SAX ContentHandler, the IncrementalSAXSource if we're bound to one and should receive the SAX stream via it for incremental build purposes...

getEntityResolver

public org.xml.sax.EntityResolver getEntityResolver()

Return this DTM's EntityResolver.

Specified by:

getEntityResolver in interface DTM

Returns:

null if this model doesn't respond to SAX entity ref events.

getDTDHandler

public org.xml.sax.DTDHandler getDTDHandler()

Return this DTM's DTDHandler.

Specified by:

getDTDHandler in interface DTM

Returns:

null if this model doesn't respond to SAX dtd events.

getErrorHandler

public org.xml.sax.ErrorHandler getErrorHandler()

Return this DTM's ErrorHandler.

Specified by:

getErrorHandler in interface DTM

Returns:

null if this model doesn't respond to SAX error events.

getDeclHandler

public org.xml.sax.ext.DeclHandler getDeclHandler()

Return this DTM's DeclHandler.

Specified by:

getDeclHandler in interface DTM

Returns:

null if this model doesn't respond to SAX Decl events.

needsTwoThreads

public boolean needsTwoThreads()

Specified by:

needsTwoThreads in interface DTM

Returns:

true iff we're building this model incrementally (eg we're partnered with a IncrementalSAXSource) and thus require that the transformation and the parse run simultaneously. Guidance to the DTMManager.

dispatchCharactersEvents

public void dispatchCharactersEvents(int nodeHandle,
                                     org.xml.sax.ContentHandler ch,
                                     boolean normalize)
                              throws org.xml.sax.SAXException

Directly call the characters method on the passed ContentHandler for the string-value of the given node (see http://www.w3.org/TR/xpath#data-model for the definition of a node's string-value). Multiple calls to the ContentHandler's characters methods may well occur for a single call to this method.

Specified by:

dispatchCharactersEvents in interface DTM

Specified by:

dispatchCharactersEvents in class DTMDefaultBase

Parameters:

nodeHandle - The node ID.

ch - A non-null reference to a ContentHandler.

normalize - true if the content should be normalized according to the rules for the XPath normalize-space function.

Throws:

org.xml.sax.SAXException

getNodeName

public String getNodeName(int nodeHandle)

Given a node handle, return its DOM-style node name. This will include names such as #text or #document.

Specified by:

getNodeName in interface DTM

Specified by:

getNodeName in class DTMDefaultBase

Parameters:

nodeHandle - the id of the node.

Returns:

String Name of this node, which may be an empty string. %REVIEW% Document when empty string is possible... %REVIEW-COMMENT% It should never be empty, should it?

getNodeNameX

public String getNodeNameX(int nodeHandle)

Given a node handle, return the XPath node name. This should be the name as described by the XPath data model, NOT the DOM-style name.

Specified by:

getNodeNameX in interface DTM

Overrides:

getNodeNameX in class DTMDefaultBase

Parameters:

nodeHandle - the id of the node.

Returns:

String Name of this node, which may be an empty string.

isAttributeSpecified

public boolean isAttributeSpecified(int attributeHandle)

5. [specified] A flag indicating whether this attribute was actually specified in the start-tag of its element, or was defaulted from the DTD.

Specified by:

isAttributeSpecified in interface DTM

Specified by:

isAttributeSpecified in class DTMDefaultBase

Parameters:

attributeHandle - Must be a valid handle to an attribute node.

Returns:

true if the attribute was specified; false if it was defaulted.

getDocumentTypeDeclarationSystemIdentifier

public String getDocumentTypeDeclarationSystemIdentifier()

A document type declaration information item has the following properties: 1. [system identifier] The system identifier of the external subset, if it exists. Otherwise this property has no value.

Specified by:

getDocumentTypeDeclarationSystemIdentifier in interface DTM

Specified by:

getDocumentTypeDeclarationSystemIdentifier in class DTMDefaultBase

Returns:

the system identifier String object, or null if there is none.

getNextNodeIdentity

protected int getNextNodeIdentity(int identity)

Get the next node identity value in the list, and call the iterator if it hasn't been added yet.

Specified by:

getNextNodeIdentity in class DTMDefaultBase

Parameters:

identity - The node identity (index).

Returns:

identity+1, or DTM.NULL.

dispatchToEvents

public void dispatchToEvents(int nodeHandle,
                             org.xml.sax.ContentHandler ch)
                      throws org.xml.sax.SAXException

Directly create SAX parser events from a subtree.

Specified by:

dispatchToEvents in interface DTM

Specified by:

dispatchToEvents in class DTMDefaultBase

Parameters:

nodeHandle - The node ID.

ch - A non-null reference to a ContentHandler.

Throws:

org.xml.sax.SAXException

getNumberOfNodes

protected int getNumberOfNodes()

Get the number of nodes that have been added.

Specified by:

getNumberOfNodes in class DTMDefaultBase

Returns:

The number of that are currently in the tree.

nextNode

protected boolean nextNode()

This method should try and build one or more nodes in the table.

Specified by:

nextNode in class DTMDefaultBase

Returns:

The true if a next node is found or false if there are no more nodes.

isTextType

private final boolean isTextType(int type)

Bottleneck determination of text type.

Parameters:

type - oneof DTM.XXX_NODE.

Returns:

true if this is a text or cdata section.

addNode

protected int addNode(int type,
                      int expandedTypeID,
                      int parentIndex,
                      int previousSibling,
                      int dataOrPrefix,
                      boolean canHaveFirstChild)

Construct the node map from the node.

Parameters:

type - raw type ID, one of DTM.XXX_NODE.

expandedTypeID - The expended type ID.

parentIndex - The current parent index.

previousSibling - The previous sibling index.

dataOrPrefix - index into m_data table, or string handle.

canHaveFirstChild - true if the node can have a first child, false if it is atomic.

Returns:

The index identity of the node that was added.

getNodeValue

public String getNodeValue(int nodeHandle)

Given a node handle, return its node value. This is mostly as defined by the DOM, but may ignore some conveniences.

Specified by:

getNodeValue in interface DTM

Specified by:

getNodeValue in class DTMDefaultBase

Parameters:

nodeHandle - The node id.

Returns:

String Value of this node, or null if not meaningful for this node type.

getLocalName

public String getLocalName(int nodeHandle)

Given a node handle, return its XPath-style localname. (As defined in Namespaces, this is the portion of the name after any colon character).

Specified by:

getLocalName in interface DTM

Specified by:

getLocalName in class DTMDefaultBase

Parameters:

nodeHandle - the id of the node.

Returns:

String Local name of this node.

getUnparsedEntityURI

public String getUnparsedEntityURI(String name)

The getUnparsedEntityURI function returns the URI of the unparsed entity with the specified name in the same document as the context node (see [3.3 Unparsed Entities]). It returns the empty string if there is no such entity.

XML processors may choose to use the System Identifier (if one is provided) to resolve the entity, rather than the URI in the Public Identifier. The details are dependent on the processor, and we would have to support some form of plug-in resolver to handle this properly. Currently, we simply return the System Identifier if present, and hope that it a usable URI or that our caller can map it to one. TODO: Resolve Public Identifiers... or consider changing function name.

If we find a relative URI reference, XML expects it to be resolved in terms of the base URI of the document. The DOM doesn't do that for us, and it isn't entirely clear whether that should be done here; currently that's pushed up to a higher level of our application. (Note that DOM Level 1 didn't store the document's base URI.) TODO: Consider resolving Relative URIs.

(The DOM's statement that "An XML processor may choose to completely expand entities before the structure model is passed to the DOM" refers only to parsed entities, not unparsed, and hence doesn't affect this function.)

Specified by:

getUnparsedEntityURI in interface DTM

Specified by:

getUnparsedEntityURI in class DTMDefaultBase

Parameters:

name - A string containing the Entity Name of the unparsed entity.

Returns:

String containing the URI of the Unparsed Entity, or an empty string if no such entity exists.

getPrefix

public String getPrefix(int nodeHandle)

Given a namespace handle, return the prefix that the namespace decl is mapping. Given a node handle, return the prefix used to map to the namespace.

%REVIEW% Are you sure you want "" for no prefix?

%REVIEW-COMMENT% I think so... not totally sure. -sb

Specified by:

getPrefix in interface DTM

Specified by:

getPrefix in class DTMDefaultBase

Parameters:

nodeHandle - the id of the node.

Returns:

String prefix of this node's name, or "" if no explicit namespace prefix was given.

getAttributeNode

public int getAttributeNode(int nodeHandle,
                            String namespaceURI,
                            String name)

Retrieves an attribute node by by qualified name and namespace URI.

Specified by:

getAttributeNode in interface DTM

Specified by:

getAttributeNode in class DTMDefaultBase

Parameters:

nodeHandle - int Handle of the node upon which to look up this attribute..

namespaceURI - The namespace URI of the attribute to retrieve, or null.

name - The local name of the attribute to retrieve.

Returns:

The attribute node handle with the specified name ( nodeName) or DTM.NULL if there is no such attribute.

getDocumentTypeDeclarationPublicIdentifier

public String getDocumentTypeDeclarationPublicIdentifier()

Return the public identifier of the external subset, normalized as described in 4.2.2 External Entities [XML]. If there is no external subset or if it has no public identifier, this property has no value.

Specified by:

getDocumentTypeDeclarationPublicIdentifier in interface DTM

Specified by:

getDocumentTypeDeclarationPublicIdentifier in class DTMDefaultBase

Returns:

the public identifier String object, or null if there is none.

getNamespaceURI

public String getNamespaceURI(int nodeHandle)

Given a node handle, return its DOM-style namespace URI (As defined in Namespaces, this is the declared URI which this node's prefix -- or default in lieu thereof -- was mapped to.)

%REVIEW% Null or ""? -sb

Specified by:

getNamespaceURI in interface DTM

Specified by:

getNamespaceURI in class DTMDefaultBase

Parameters:

nodeHandle - the id of the node.

Returns:

String URI value of this node's namespace, or null if no namespace was resolved.

getStringValue

public XMLString getStringValue(int nodeHandle)

Get the string-value of a node as a String object (see http://www.w3.org/TR/xpath#data-model for the definition of a node's string-value).

Specified by:

getStringValue in interface DTM

Specified by:

getStringValue in class DTMDefaultBase

Parameters:

nodeHandle - The node ID.

Returns:

A string object that represents the string-value of the given node.

getElementById

public int getElementById(String elementId)

Returns the Element whose ID is given by elementId. If no such element exists, returns DTM.NULL. Behavior is not defined if more than one element has this ID. Attributes (including those with the name "ID") are not of type ID unless so defined by DTD/Schema information available to the DTM implementation. Implementations that do not know whether attributes are of type ID or not are expected to return DTM.NULL.

%REVIEW% Presumably IDs are still scoped to a single document, and this operation searches only within a single document, right? Wouldn't want collisions between DTMs in the same process.

Specified by:

getElementById in interface DTM

Specified by:

getElementById in class DTMDefaultBase

Parameters:

elementId - The unique id value for an element.

Returns:

The handle of the matching element.

getPrefix

private String getPrefix(String qname,
                         String uri)

Get a prefix either from the qname or from the uri mapping, or just make one up!

Parameters:

qname - The qualified name, which may be null.

uri - The namespace URI, which may be null.

Returns:

The prefix if there is one, or null.

setIDAttribute

public void setIDAttribute(String id,
                           int elem)

Set an ID string to node association in the ID table.

Parameters:

id - The ID string.

elem - The associated element handle.

charactersFlush

protected void charactersFlush()

Check whether accumulated text should be stripped; if not, append the appropriate flavor of text/cdata node.

resolveEntity

public org.xml.sax.InputSource resolveEntity(String publicId,
                                             String systemId)
                                      throws org.xml.sax.SAXException

Resolve an external entity.

Always return null, so that the parser will use the system identifier provided in the XML document. This method implements the SAX default behaviour: application writers can override it in a subclass to do special translations such as catalog lookups or URI redirection.

Specified by:

resolveEntity in interface org.xml.sax.EntityResolver

Parameters:

publicId - The public identifer, or null if none is available.

systemId - The system identifier provided in the XML document.

Returns:

The new input source, or null to require the default behaviour.

Throws:

org.xml.sax.SAXException - Any SAX exception, possibly wrapping another exception.

org.xml.sax.SAXException

See Also:

EntityResolver.resolveEntity(java.lang.String, java.lang.String)

notationDecl

public void notationDecl(String name,
                         String publicId,
                         String systemId)
                  throws org.xml.sax.SAXException

Receive notification of a notation declaration.

By default, do nothing. Application writers may override this method in a subclass if they wish to keep track of the notations declared in a document.

Specified by:

notationDecl in interface org.xml.sax.DTDHandler

Parameters:

name - The notation name.

publicId - The notation public identifier, or null if not available.

systemId - The notation system identifier.

Throws:

org.xml.sax.SAXException - Any SAX exception, possibly wrapping another exception.

org.xml.sax.SAXException

See Also:

DTDHandler.notationDecl(java.lang.String, java.lang.String, java.lang.String)

unparsedEntityDecl

public void unparsedEntityDecl(String name,
                               String publicId,
                               String systemId,
                               String notationName)
                        throws org.xml.sax.SAXException

Receive notification of an unparsed entity declaration.

By default, do nothing. Application writers may override this method in a subclass to keep track of the unparsed entities declared in a document.

Specified by:

unparsedEntityDecl in interface org.xml.sax.DTDHandler

Parameters:

name - The entity name.

publicId - The entity public identifier, or null if not available.

systemId - The entity system identifier.

notationName - The name of the associated notation.

Throws:

org.xml.sax.SAXException - Any SAX exception, possibly wrapping another exception.

org.xml.sax.SAXException

See Also:

DTDHandler.unparsedEntityDecl(java.lang.String, java.lang.String, java.lang.String, java.lang.String)

setDocumentLocator

public void setDocumentLocator(org.xml.sax.Locator locator)

Receive a Locator object for document events.

By default, do nothing. Application writers may override this method in a subclass if they wish to store the locator for use with other document events.

Specified by:

setDocumentLocator in interface org.xml.sax.ContentHandler

Parameters:

locator - A locator for all SAX document events.

See Also:

ContentHandler.setDocumentLocator(org.xml.sax.Locator), Locator

startDocument

public void startDocument()
                   throws org.xml.sax.SAXException

Receive notification of the beginning of the document.

Specified by:

startDocument in interface org.xml.sax.ContentHandler

Throws:

org.xml.sax.SAXException - Any SAX exception, possibly wrapping another exception.

See Also:

ContentHandler.startDocument()

endDocument

public void endDocument()
                 throws org.xml.sax.SAXException

Receive notification of the end of the document.

Specified by:

endDocument in interface org.xml.sax.ContentHandler

Throws:

org.xml.sax.SAXException - Any SAX exception, possibly wrapping another exception.

See Also:

ContentHandler.endDocument()

startPrefixMapping

public void startPrefixMapping(String prefix,
                               String uri)
                        throws org.xml.sax.SAXException

Receive notification of the start of a Namespace mapping.

By default, do nothing. Application writers may override this method in a subclass to take specific actions at the start of each Namespace prefix scope (such as storing the prefix mapping).

Specified by:

startPrefixMapping in interface org.xml.sax.ContentHandler

Parameters:

prefix - The Namespace prefix being declared.

uri - The Namespace URI mapped to the prefix.

Throws:

org.xml.sax.SAXException - Any SAX exception, possibly wrapping another exception.

See Also:

ContentHandler.startPrefixMapping(java.lang.String, java.lang.String)

endPrefixMapping

public void endPrefixMapping(String prefix)
                      throws org.xml.sax.SAXException

Receive notification of the end of a Namespace mapping.

By default, do nothing. Application writers may override this method in a subclass to take specific actions at the end of each prefix mapping.

Specified by:

endPrefixMapping in interface org.xml.sax.ContentHandler

Parameters:

prefix - The Namespace prefix being declared.

Throws:

org.xml.sax.SAXException - Any SAX exception, possibly wrapping another exception.

See Also:

ContentHandler.endPrefixMapping(java.lang.String)

declAlreadyDeclared

protected boolean declAlreadyDeclared(String prefix)

Check if a declaration has already been made for a given prefix.

Parameters:

prefix - non-null prefix string.

Returns:

true if the declaration has already been declared in the current context.

startElement

public void startElement(String uri,
                         String localName,
                         String qName,
                         org.xml.sax.Attributes attributes)
                  throws org.xml.sax.SAXException

Receive notification of the start of an element.

By default, do nothing. Application writers may override this method in a subclass to take specific actions at the start of each element (such as allocating a new tree node or writing output to a file).

Specified by:

startElement in interface org.xml.sax.ContentHandler

Parameters:

uri - The Namespace URI, or the empty string if the element has no Namespace URI or if Namespace processing is not being performed.

localName - The local name (without prefix), or the empty string if Namespace processing is not being performed.

qName - The qualified name (with prefix), or the empty string if qualified names are not available.

attributes - The specified or defaulted attributes.

Throws:

org.xml.sax.SAXException - Any SAX exception, possibly wrapping another exception.

See Also:

ContentHandler.startElement(java.lang.String, java.lang.String, java.lang.String, org.xml.sax.Attributes)

endElement

public void endElement(String uri,
                       String localName,
                       String qName)
                throws org.xml.sax.SAXException

Receive notification of the end of an element.

By default, do nothing. Application writers may override this method in a subclass to take specific actions at the end of each element (such as finalising a tree node or writing output to a file).

Specified by:

endElement in interface org.xml.sax.ContentHandler

Parameters:

uri - The Namespace URI, or the empty string if the element has no Namespace URI or if Namespace processing is not being performed.

localName - The local name (without prefix), or the empty string if Namespace processing is not being performed.

qName - The qualified XML 1.0 name (with prefix), or the empty string if qualified names are not available.

Throws:

org.xml.sax.SAXException - Any SAX exception, possibly wrapping another exception.

See Also:

ContentHandler.endElement(java.lang.String, java.lang.String, java.lang.String)

characters

public void characters(char[] ch,
                       int start,
                       int length)
                throws org.xml.sax.SAXException

Receive notification of character data inside an element.

By default, do nothing. Application writers may override this method to take specific actions for each chunk of character data (such as adding the data to a node or buffer, or printing it to a file).

Specified by:

characters in interface org.xml.sax.ContentHandler

Parameters:

ch - The characters.

start - The start position in the character array.

length - The number of characters to use from the character array.

Throws:

org.xml.sax.SAXException - Any SAX exception, possibly wrapping another exception.

See Also:

ContentHandler.characters(char[], int, int)

ignorableWhitespace

public void ignorableWhitespace(char[] ch,
                                int start,
                                int length)
                         throws org.xml.sax.SAXException

Receive notification of ignorable whitespace in element content.

By default, do nothing. Application writers may override this method to take specific actions for each chunk of ignorable whitespace (such as adding data to a node or buffer, or printing it to a file).

Specified by:

ignorableWhitespace in interface org.xml.sax.ContentHandler

Parameters:

ch - The whitespace characters.

start - The start position in the character array.

length - The number of characters to use from the character array.

Throws:

org.xml.sax.SAXException - Any SAX exception, possibly wrapping another exception.

See Also:

ContentHandler.ignorableWhitespace(char[], int, int)

processingInstruction

public void processingInstruction(String target,
                                  String data)
                           throws org.xml.sax.SAXException

Receive notification of a processing instruction.

By default, do nothing. Application writers may override this method in a subclass to take specific actions for each processing instruction, such as setting status variables or invoking other methods.

Specified by:

processingInstruction in interface org.xml.sax.ContentHandler

Parameters:

target - The processing instruction target.

data - The processing instruction data, or null if none is supplied.

Throws:

org.xml.sax.SAXException - Any SAX exception, possibly wrapping another exception.

See Also:

ContentHandler.processingInstruction(java.lang.String, java.lang.String)

skippedEntity

public void skippedEntity(String name)
                   throws org.xml.sax.SAXException

Receive notification of a skipped entity.

By default, do nothing. Application writers may override this method in a subclass to take specific actions for each processing instruction, such as setting status variables or invoking other methods.

Specified by:

skippedEntity in interface org.xml.sax.ContentHandler

Parameters:

name - The name of the skipped entity.

Throws:

org.xml.sax.SAXException - Any SAX exception, possibly wrapping another exception.

See Also:

ContentHandler.processingInstruction(java.lang.String, java.lang.String)

warning

public void warning(org.xml.sax.SAXParseException e)
             throws org.xml.sax.SAXException

Receive notification of a parser warning.

The default implementation does nothing. Application writers may override this method in a subclass to take specific actions for each warning, such as inserting the message in a log file or printing it to the console.

Specified by:

warning in interface org.xml.sax.ErrorHandler

Parameters:

e - The warning information encoded as an exception.

Throws:

org.xml.sax.SAXException - Any SAX exception, possibly wrapping another exception.

See Also:

ErrorHandler.warning(org.xml.sax.SAXParseException), SAXParseException

error

public void error(org.xml.sax.SAXParseException e)
           throws org.xml.sax.SAXException

Receive notification of a recoverable parser error.

The default implementation does nothing. Application writers may override this method in a subclass to take specific actions for each error, such as inserting the message in a log file or printing it to the console.

Specified by:

error in interface org.xml.sax.ErrorHandler

Parameters:

e - The warning information encoded as an exception.

Throws:

org.xml.sax.SAXException - Any SAX exception, possibly wrapping another exception.

See Also:

ErrorHandler.warning(org.xml.sax.SAXParseException), SAXParseException

fatalError

public void fatalError(org.xml.sax.SAXParseException e)
                throws org.xml.sax.SAXException

Report a fatal XML parsing error.

The default implementation throws a SAXParseException. Application writers may override this method in a subclass if they need to take specific actions for each fatal error (such as collecting all of the errors into a single report): in any case, the application must stop all regular processing when this method is invoked, since the document is no longer reliable, and the parser may no longer report parsing events.

Specified by:

fatalError in interface org.xml.sax.ErrorHandler

Parameters:

e - The error information encoded as an exception.

Throws:

org.xml.sax.SAXException - Any SAX exception, possibly wrapping another exception.

See Also:

ErrorHandler.fatalError(org.xml.sax.SAXParseException), SAXParseException

elementDecl

public void elementDecl(String name,
                        String model)
                 throws org.xml.sax.SAXException

Report an element type declaration.

The content model will consist of the string "EMPTY", the string "ANY", or a parenthesised group, optionally followed by an occurrence indicator. The model will be normalized so that all whitespace is removed,and will include the enclosing parentheses.

Specified by:

elementDecl in interface org.xml.sax.ext.DeclHandler

Parameters:

name - The element type name.

model - The content model as a normalized string.

Throws:

org.xml.sax.SAXException - The application may raise an exception.

attributeDecl

public void attributeDecl(String eName,
                          String aName,
                          String type,
                          String valueDefault,
                          String value)
                   throws org.xml.sax.SAXException

Report an attribute type declaration.

Only the effective (first) declaration for an attribute will be reported. The type will be one of the strings "CDATA", "ID", "IDREF", "IDREFS", "NMTOKEN", "NMTOKENS", "ENTITY", "ENTITIES", or "NOTATION", or a parenthesized token group with the separator "|" and all whitespace removed.

Specified by:

attributeDecl in interface org.xml.sax.ext.DeclHandler

Parameters:

eName - The name of the associated element.

aName - The name of the attribute.

type - A string representing the attribute type.

valueDefault - A string representing the attribute default ("#IMPLIED", "#REQUIRED", or "#FIXED") or null if none of these applies.

value - A string representing the attribute's default value, or null if there is none.

Throws:

org.xml.sax.SAXException - The application may raise an exception.

internalEntityDecl

public void internalEntityDecl(String name,
                               String value)
                        throws org.xml.sax.SAXException

Report an internal entity declaration.

Only the effective (first) declaration for each entity will be reported.

Specified by:

internalEntityDecl in interface org.xml.sax.ext.DeclHandler

Parameters:

name - The name of the entity. If it is a parameter entity, the name will begin with '%'.

value - The replacement text of the entity.

Throws:

org.xml.sax.SAXException - The application may raise an exception.

See Also:

externalEntityDecl(java.lang.String, java.lang.String, java.lang.String), DTDHandler.unparsedEntityDecl(java.lang.String, java.lang.String, java.lang.String, java.lang.String)

externalEntityDecl

public void externalEntityDecl(String name,
                               String publicId,
                               String systemId)
                        throws org.xml.sax.SAXException

Report a parsed external entity declaration.

Only the effective (first) declaration for each entity will be reported.

Specified by:

externalEntityDecl in interface org.xml.sax.ext.DeclHandler

Parameters:

name - The name of the entity. If it is a parameter entity, the name will begin with '%'.

publicId - The declared public identifier of the entity, or null if none was declared.

systemId - The declared system identifier of the entity.

Throws:

org.xml.sax.SAXException - The application may raise an exception.

See Also:

internalEntityDecl(java.lang.String, java.lang.String), DTDHandler.unparsedEntityDecl(java.lang.String, java.lang.String, java.lang.String, java.lang.String)

startDTD

public void startDTD(String name,
                     String publicId,
                     String systemId)
              throws org.xml.sax.SAXException

Report the start of DTD declarations, if any.

Any declarations are assumed to be in the internal subset unless otherwise indicated by a startEntity event.

Note that the start/endDTD events will appear within the start/endDocument events from ContentHandler and before the first startElement event.

Specified by:

startDTD in interface org.xml.sax.ext.LexicalHandler

Parameters:

name - The document type name.

publicId - The declared public identifier for the external DTD subset, or null if none was declared.

systemId - The declared system identifier for the external DTD subset, or null if none was declared.

Throws:

org.xml.sax.SAXException - The application may raise an exception.

See Also:

endDTD(), startEntity(java.lang.String)

endDTD

public void endDTD()
            throws org.xml.sax.SAXException

Report the end of DTD declarations.

Specified by:

endDTD in interface org.xml.sax.ext.LexicalHandler

Throws:

org.xml.sax.SAXException - The application may raise an exception.

See Also:

startDTD(java.lang.String, java.lang.String, java.lang.String)

startEntity

public void startEntity(String name)
                 throws org.xml.sax.SAXException

Report the beginning of an entity in content.

NOTE: entity references in attribute values -- and the start and end of the document entity -- are never reported.

The start and end of the external DTD subset are reported using the pseudo-name "[dtd]". All other events must be properly nested within start/end entity events.

Note that skipped entities will be reported through the skippedEntity event, which is part of the ContentHandler interface.

Specified by:

startEntity in interface org.xml.sax.ext.LexicalHandler

Parameters:

name - The name of the entity. If it is a parameter entity, the name will begin with '%'.

Throws:

org.xml.sax.SAXException - The application may raise an exception.

See Also:

endEntity(java.lang.String), DeclHandler.internalEntityDecl(java.lang.String, java.lang.String), DeclHandler.externalEntityDecl(java.lang.String, java.lang.String, java.lang.String)

endEntity

public void endEntity(String name)
               throws org.xml.sax.SAXException

Report the end of an entity.

Specified by:

endEntity in interface org.xml.sax.ext.LexicalHandler

Parameters:

name - The name of the entity that is ending.

Throws:

org.xml.sax.SAXException - The application may raise an exception.

See Also:

startEntity(java.lang.String)

startCDATA

public void startCDATA()
                throws org.xml.sax.SAXException

Report the start of a CDATA section.

The contents of the CDATA section will be reported through the regular characters event.

Specified by:

startCDATA in interface org.xml.sax.ext.LexicalHandler

Throws:

org.xml.sax.SAXException - The application may raise an exception.

See Also:

endCDATA()

endCDATA

public void endCDATA()
              throws org.xml.sax.SAXException

Report the end of a CDATA section.

Specified by:

endCDATA in interface org.xml.sax.ext.LexicalHandler

Throws:

org.xml.sax.SAXException - The application may raise an exception.

See Also:

startCDATA()

comment

public void comment(char[] ch,
                    int start,
                    int length)
             throws org.xml.sax.SAXException

Report an XML comment anywhere in the document.

This callback will be used for comments inside or outside the document element, including comments in the external DTD subset (if read).

Specified by:

comment in interface org.xml.sax.ext.LexicalHandler

Parameters:

ch - An array holding the characters in the comment.

start - The starting position in the array.

length - The number of characters to use from the array.

Throws:

org.xml.sax.SAXException - The application may raise an exception.

setProperty

public void setProperty(String property,
                        Object value)

Set a run time property for this DTM instance. %REVIEW% Now that we no longer use this method to support getSourceLocatorFor, can we remove it?

Specified by:

setProperty in interface DTM

Parameters:

property - a String value

value - an Object value

getSourceLocatorFor

public javax.xml.transform.SourceLocator getSourceLocatorFor(int node)

Retrieve the SourceLocator associated with a specific node. This is only meaningful if the XalanProperties.SOURCE_LOCATION flag was set True using setProperty; if it was never set, or was set false, we will return null. (We _could_ return a locator with the document's base URI and bogus line/column information. Trying that; see the else clause.)

Specified by:

getSourceLocatorFor in interface DTM

Parameters:

node - an int value

Returns:

a SourceLocator value or null if no location is available