Package net.ontopia.topicmaps.xml

Class XTMContentHandler

java.lang.Object

org.xml.sax.helpers.DefaultHandler

net.ontopia.topicmaps.xml.AbstractTopicMapContentHandler

net.ontopia.topicmaps.xml.XTMContentHandler

All Implemented Interfaces:

ContentHandler, DTDHandler, EntityResolver, ErrorHandler, DeclHandler, LexicalHandler

public class XTMContentHandler
extends AbstractTopicMapContentHandler
implements LexicalHandler, DeclHandler

INTERNAL: SAX2 content handler used for importing XTM 1.0 topic map documents. The content handler builds a topic map object based on a SAX event stream conforming to the XTM topic map interchange syntax. See http://www.topicmaps.org/xtm/1.0/

Field Summary

Fields

Modifier and Type	Field	Description
protected Map<String,String>	entities	Keeps track of the declared entities, in order that the base URI can be set correctly in external entities.
protected boolean	isSubDocument	Used to tell if we are reading the top-level XTM document (false) or if we are reading a merged-in XTM document (true).
static final String	NS_NS
static final String	NS_XLINK
static final String	NS_XTM
static final LocatorIF	nullPSI
protected ExternalReferenceHandlerIF	ref_handler
static final String	SAX_DECL_HANDLER
static final String	SAX_LEXICAL_HANDLER
protected TopicMapStoreFactoryIF	stores

Fields inherited from class net.ontopia.topicmaps.xml.AbstractTopicMapContentHandler

doc_address, ehandler, info, locator, parents, processed_documents_accumulated, processed_documents_current, processed_documents_from_parent, propagated_themes

Constructor Summary

Constructors

Constructor	Description
XTMContentHandler(TopicMapStoreFactoryIF stores, LocatorIF base_address)
XTMContentHandler(TopicMapStoreFactoryIF stores, LocatorIF base_address, Collection<LocatorIF> processed_documents)

Method Summary

Modifier and Type	Method	Description
protected void	addItemIdentifier(TMObjectIF tmobject, LocatorIF sourceLocator)
protected TopicIF	addSubjectIdentifier(TopicIF topic, LocatorIF subjectIndicator)
void	attributeDecl(String eName, String aName, String type, String mode, String value)
void	characters(char[] ch, int start, int length)
void	comment(char[] ch, int start, int length)
protected LocatorIF	createLocator(String address)
protected TopicIF	createTopicFromLazyTopic()
protected LocatorIF	createURILocator(String address)
void	elementDecl(String name, String model)
void	endCDATA()
void	endDocument()
void	endDTD()
void	endElement(String uri, String name, String qName)
void	endEntity(String name)
void	endPrefixMapping(String prefix)
void	externalEntityDecl(String name, String publicId, String systemId)
protected LocatorIF	getBaseAddress()
static TopicIF	getDefaultOccurrenceTopic(TopicMapIF topicmap)
ExternalReferenceHandlerIF	getExternalReferenceHandler()	INTERNAL: Gets the external reference handler.
static TopicIF	getNullTopic(TopicMapIF topicmap)
protected TopicIF	getParentTopic()
protected TopicIF	getReferencedExternalTopic(LocatorIF orig_locator)
Collection<TopicMapIF>	getTopicMaps()	INTERNAL: Gets the topic maps found after having parsed the input source.
void	internalEntityDecl(String name, String value)
protected void	processMember(TopicIF player)
protected void	processTheme(TopicIF theme)
protected void	processTopicReference(TopicIF referenced_topic)
void	register(XMLReader parser)	INTERNAL: Registers the handler with the parser and configures the parser.
protected void	registerSourceLocator(TMObjectIF tmobject, String id)
protected TopicIF	registerSourceLocator(TopicIF topic, LocatorIF locator)
protected TopicIF	registerSubjectIndicator(TopicIF topic, LocatorIF locator)
protected TopicIF	registerSubjectLocator(TopicIF topic, LocatorIF locator)
static void	removeDefaultOccurrenceTopic(TopicMapIF topicmap)
static void	removeNullTopic(TopicMapIF topicmap)
protected TopicIF	resolveResourceRef(LocatorIF locator)
protected TopicIF	resolveSourceLocatorOrSubjectIndicator(LocatorIF locator)
protected TopicIF	resolveTopicRef(String address)
void	setExternalReferenceHandler(ExternalReferenceHandlerIF ref_handler)	INTERNAL: Sets the external reference handler.
void	setSubDocument(boolean isSubDocument)	INTERNAL: Tell the handler whether this is a top-level document or not.
void	startCDATA()
void	startDocument()
void	startDTD(String name, String publicId, String systemId)
void	startElement(String uri, String name, String qName, Attributes atts)
void	startEntity(String name)
void	startPrefixMapping(String prefix, String uri)

Methods inherited from class net.ontopia.topicmaps.xml.AbstractTopicMapContentHandler

getDefaultErrorHandler, getLocationInfo, getPropagatedThemes, propagateThemes, setDocumentLocator, setPropagatedThemes

Methods inherited from class org.xml.sax.helpers.DefaultHandler

error, fatalError, ignorableWhitespace, notationDecl, processingInstruction, resolveEntity, skippedEntity, unparsedEntityDecl, warning

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.xml.sax.ContentHandler

declaration

Field Details

NS_XTM

public static final String NS_XTM

See Also:

• Constant Field Values

NS_XLINK

public static final String NS_XLINK

See Also:

• Constant Field Values

NS_NS

public static final String NS_NS

See Also:

• Constant Field Values

nullPSI

public static final LocatorIF nullPSI

SAX_LEXICAL_HANDLER

public static final String SAX_LEXICAL_HANDLER

See Also:

• Constant Field Values

SAX_DECL_HANDLER

public static final String SAX_DECL_HANDLER

See Also:

• Constant Field Values

stores

protected TopicMapStoreFactoryIF stores

entities

protected Map<String,String> entities

Keeps track of the declared entities, in order that the base URI can be set correctly in external entities.

isSubDocument

protected boolean isSubDocument

Used to tell if we are reading the top-level XTM document (false) or if we are reading a merged-in XTM document (true).

ref_handler

protected ExternalReferenceHandlerIF ref_handler

Constructor Details

XTMContentHandler

public XTMContentHandler(TopicMapStoreFactoryIF stores,
 LocatorIF base_address)

XTMContentHandler

public XTMContentHandler(TopicMapStoreFactoryIF stores,
 LocatorIF base_address,
 Collection<LocatorIF> processed_documents)

Method Details

getTopicMaps

public Collection<TopicMapIF> getTopicMaps()

INTERNAL: Gets the topic maps found after having parsed the input source.

getExternalReferenceHandler

public ExternalReferenceHandlerIF getExternalReferenceHandler()

INTERNAL: Gets the external reference handler. The reference handler will receive notifications on references to external topics and topic maps.

setExternalReferenceHandler

public void setExternalReferenceHandler(ExternalReferenceHandlerIF ref_handler)

INTERNAL: Sets the external reference handler.

setSubDocument

public void setSubDocument(boolean isSubDocument)

INTERNAL: Tell the handler whether this is a top-level document or not.

register

public void register(XMLReader parser)

INTERNAL: Registers the handler with the parser and configures the parser.

Overrides:

register in class AbstractTopicMapContentHandler

startDocument

public void startDocument()

Specified by:

startDocument in interface ContentHandler

Overrides:

startDocument in class DefaultHandler

endDocument

public void endDocument()

Specified by:

endDocument in interface ContentHandler

Overrides:

endDocument in class DefaultHandler

startElement

public void startElement(String uri,
 String name,
 String qName,
 Attributes atts)
                  throws SAXException

Specified by:

startElement in interface ContentHandler

Overrides:

startElement in class DefaultHandler

Throws:

SAXException

characters

public void characters(char[] ch,
 int start,
 int length)

Specified by:

characters in interface ContentHandler

Overrides:

characters in class DefaultHandler

endElement

public void endElement(String uri,
 String name,
 String qName)
                throws SAXException

Specified by:

endElement in interface ContentHandler

Overrides:

endElement in class DefaultHandler

Throws:

SAXException

startPrefixMapping

public void startPrefixMapping(String prefix,
 String uri)

Specified by:

startPrefixMapping in interface ContentHandler

Overrides:

startPrefixMapping in class DefaultHandler

endPrefixMapping

public void endPrefixMapping(String prefix)

Specified by:

endPrefixMapping in interface ContentHandler

Overrides:

endPrefixMapping in class DefaultHandler

getBaseAddress

protected LocatorIF getBaseAddress()

resolveTopicRef

protected TopicIF resolveTopicRef(String address)
                           throws SAXException

Throws:

SAXException

resolveResourceRef

protected TopicIF resolveResourceRef(LocatorIF locator)

registerSubjectLocator

protected TopicIF registerSubjectLocator(TopicIF topic,
 LocatorIF locator)

registerSourceLocator

protected void registerSourceLocator(TMObjectIF tmobject,
 String id)

registerSourceLocator

protected TopicIF registerSourceLocator(TopicIF topic,
 LocatorIF locator)

registerSubjectIndicator

protected TopicIF registerSubjectIndicator(TopicIF topic,
 LocatorIF locator)

resolveSourceLocatorOrSubjectIndicator

protected TopicIF resolveSourceLocatorOrSubjectIndicator(LocatorIF locator)

createLocator

protected LocatorIF createLocator(String address)

createURILocator

protected LocatorIF createURILocator(String address)

getReferencedExternalTopic

protected TopicIF getReferencedExternalTopic(LocatorIF orig_locator)
                                      throws SAXException

Throws:

SAXException

processTheme

protected void processTheme(TopicIF theme)

processTopicReference

protected void processTopicReference(TopicIF referenced_topic)

processMember

protected void processMember(TopicIF player)

addItemIdentifier

protected void addItemIdentifier(TMObjectIF tmobject,
 LocatorIF sourceLocator)

addSubjectIdentifier

protected TopicIF addSubjectIdentifier(TopicIF topic,
 LocatorIF subjectIndicator)

getParentTopic

protected TopicIF getParentTopic()

createTopicFromLazyTopic

protected TopicIF createTopicFromLazyTopic()

startEntity

public void startEntity(String name)

Specified by:

startEntity in interface LexicalHandler

endEntity

public void endEntity(String name)

Specified by:

endEntity in interface LexicalHandler

comment

public void comment(char[] ch,
 int start,
 int length)

Specified by:

comment in interface LexicalHandler

startCDATA

public void startCDATA()

Specified by:

startCDATA in interface LexicalHandler

endCDATA

public void endCDATA()

Specified by:

endCDATA in interface LexicalHandler

startDTD

public void startDTD(String name,
 String publicId,
 String systemId)

Specified by:

startDTD in interface LexicalHandler

endDTD

public void endDTD()

Specified by:

endDTD in interface LexicalHandler

externalEntityDecl

public void externalEntityDecl(String name,
 String publicId,
 String systemId)

Specified by:

externalEntityDecl in interface DeclHandler

attributeDecl

public void attributeDecl(String eName,
 String aName,
 String type,
 String mode,
 String value)

Specified by:

attributeDecl in interface DeclHandler

elementDecl

public void elementDecl(String name,
 String model)

Specified by:

elementDecl in interface DeclHandler

internalEntityDecl

public void internalEntityDecl(String name,
 String value)

Specified by:

internalEntityDecl in interface DeclHandler

getNullTopic

public static TopicIF getNullTopic(TopicMapIF topicmap)

getDefaultOccurrenceTopic

public static TopicIF getDefaultOccurrenceTopic(TopicMapIF topicmap)

removeNullTopic

public static void removeNullTopic(TopicMapIF topicmap)

removeDefaultOccurrenceTopic

public static void removeDefaultOccurrenceTopic(TopicMapIF topicmap)