Package net.ontopia.topicmaps.query.parser

Class LocalParseContext

java.lang.Object

net.ontopia.topicmaps.query.parser.LocalParseContext

All Implemented Interfaces:

DeclarationContextIF, ParseContextIF

public class LocalParseContext
extends Object
implements ParseContextIF, DeclarationContextIF

INTERNAL: Represents the local context in which a tolog query or rule file is being parsed. Context may be the context bound to a QueryProcessorIF object, or it may be only a transient local context for a query.

Field Summary

Fields inherited from interface net.ontopia.topicmaps.query.parser.ParseContextIF

ITEM_IDENTIFIER, MODULE, SUBJECT_IDENTIFIER, SUBJECT_LOCATOR

Constructor Summary

Constructors

Constructor	Description
LocalParseContext(ParseContextIF subcontext)

Method Summary

Modifier and Type	Method	Description
LocatorIF	absolutify(String uriref)
void	addPredicate(PredicateIF predicate)	INTERNAL: Adds a new predicate to the context.
void	addPrefixBinding(String prefix, String uri, int qualification)	INTERNAL: Adds a prefix binding to the context.
void	dump()	INTERNAL: Used for debugging.
ModuleIF	getModule(String uri)
TMObjectIF	getObject(QName qname)
TMObjectIF	getObjectByItemId(String uri)
TMObjectIF	getObjectByObjectId(String id)
PredicateIF	getPredicate(TopicIF topic, boolean assoc)
PredicateIF	getPredicate(ParsedRule rule)
PredicateIF	getPredicate(QName qname, boolean assoc)	INTERNAL: Returns the named predicate, or null if it does not exist.
TopicIF	getTopic(QName qname)	INTERNAL: Interprets the given prefix and localname as a topic, returning null if none is found.
TopicIF	getTopicBySubjectIdentifier(String uri)
TopicIF	getTopicBySubjectLocator(String uri)
TopicMapIF	getTopicMap()	INTERNAL: Returns the topic map being parsed against.
boolean	isBuiltInPredicate(String name)	INTERNAL: Used to find out if the given predicate name is the name of a built-in predicate.
boolean	isLoading(String uri)	INTERNAL: Returns true if the uri is being loaded or has already been loaded.
LocatorIF	resolveQName(QName qname)	INTERNAL: Returns the full locator for the given QName, or reports an error if the prefix is unbound, or if the prefix is bound to something other than a subject identifier namespace (since this is used for the CTM part of tolog INSERT only).

Methods inherited from class java.lang.Object

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

Constructor Detail

LocalParseContext

public LocalParseContext(ParseContextIF subcontext)

Method Detail

getTopicMap

public TopicMapIF getTopicMap()

Description copied from interface: ParseContextIF

INTERNAL: Returns the topic map being parsed against.

Specified by:

getTopicMap in interface ParseContextIF

resolveQName

public LocatorIF resolveQName(QName qname)

Description copied from interface: ParseContextIF

INTERNAL: Returns the full locator for the given QName, or reports an error if the prefix is unbound, or if the prefix is bound to something other than a subject identifier namespace (since this is used for the CTM part of tolog INSERT only). FIXME: what exception to throw?

Specified by:

resolveQName in interface ParseContextIF

addPrefixBinding

public void addPrefixBinding(String prefix,
                             String uri,
                             int qualification)
                      throws AntlrWrapException

Description copied from interface: ParseContextIF

INTERNAL: Adds a prefix binding to the context.

Specified by:

addPrefixBinding in interface ParseContextIF

Parameters:

prefix - The prefix whose binding is being defined.

uri - The (possibly relative) URI reference to which the prefix is bound.

qualification - The interpretation of the URI. (Defined using local constants.)

Throws:

AntlrWrapException

isLoading

public boolean isLoading(String uri)

Description copied from interface: ParseContextIF

INTERNAL: Returns true if the uri is being loaded or has already been loaded. This method is used to make sure that there are no infinite recursion when importing modules.

Specified by:

isLoading in interface ParseContextIF

isBuiltInPredicate

public boolean isBuiltInPredicate(String name)

Description copied from interface: ParseContextIF

INTERNAL: Used to find out if the given predicate name is the name of a built-in predicate. Needed for error checking, see bug #1082.

Specified by:

isBuiltInPredicate in interface ParseContextIF

addPredicate

public void addPredicate(PredicateIF predicate)
                  throws AntlrWrapException

Description copied from interface: ParseContextIF

INTERNAL: Adds a new predicate to the context.

Specified by:

addPredicate in interface ParseContextIF

Throws:

AntlrWrapException

getTopic

public TopicIF getTopic(QName qname)
                 throws AntlrWrapException

Description copied from interface: ParseContextIF

INTERNAL: Interprets the given prefix and localname as a topic, returning null if none is found.

Specified by:

getTopic in interface ParseContextIF

Throws:

AntlrWrapException

getObject

public TMObjectIF getObject(QName qname)
                     throws AntlrWrapException

Specified by:

getObject in interface ParseContextIF

Throws:

AntlrWrapException

getPredicate

public PredicateIF getPredicate(QName qname,
                                boolean assoc)
                         throws AntlrWrapException

Description copied from interface: ParseContextIF

INTERNAL: Returns the named predicate, or null if it does not exist.

Specified by:

getPredicate in interface ParseContextIF

Throws:

AntlrWrapException

getPredicate

public PredicateIF getPredicate(TopicIF topic,
                                boolean assoc)

Specified by:

getPredicate in interface ParseContextIF

getPredicate

public PredicateIF getPredicate(ParsedRule rule)

Specified by:

getPredicate in interface ParseContextIF

getModule

public ModuleIF getModule(String uri)

Specified by:

getModule in interface ParseContextIF

absolutify

public LocatorIF absolutify(String uriref)
                     throws AntlrWrapException

Specified by:

absolutify in interface ParseContextIF

Throws:

AntlrWrapException

getObjectByObjectId

public TMObjectIF getObjectByObjectId(String id)
                               throws AntlrWrapException

Specified by:

getObjectByObjectId in interface ParseContextIF

Throws:

AntlrWrapException

getTopicBySubjectIdentifier

public TopicIF getTopicBySubjectIdentifier(String uri)
                                    throws AntlrWrapException

Specified by:

getTopicBySubjectIdentifier in interface ParseContextIF

Throws:

AntlrWrapException

getTopicBySubjectLocator

public TopicIF getTopicBySubjectLocator(String uri)
                                 throws AntlrWrapException

Specified by:

getTopicBySubjectLocator in interface ParseContextIF

Throws:

AntlrWrapException

getObjectByItemId

public TMObjectIF getObjectByItemId(String uri)
                             throws AntlrWrapException

Specified by:

getObjectByItemId in interface ParseContextIF

Throws:

AntlrWrapException

dump

public void dump()

Description copied from interface: ParseContextIF

INTERNAL: Used for debugging.

Specified by:

dump in interface ParseContextIF