net.ontopia.topicmaps.impl.rdbms
Class Topic

java.lang.Object
  net.ontopia.persistence.proxy.AbstractRWPersistent
      net.ontopia.topicmaps.impl.rdbms.TMObject
          net.ontopia.topicmaps.impl.rdbms.Topic

All Implemented Interfaces:

PersistentIF, TMObjectIF, TopicIF

public class Topic
extends TMObject
implements TopicIF

INTERNAL: The rdbms topic implementation.

Field Summary

static String	CLASS_INDICATOR
protected static String[]	fields
protected static int	LF_indicators
protected static int	LF_names
protected static int	LF_occurrences
protected static int	LF_reified
protected static int	LF_roles
protected static int	LF_subjects
protected static int	LF_types

Fields inherited from class net.ontopia.persistence.proxy.AbstractRWPersistent

id, MASKS, txn, values

Constructor Summary

Topic()

Topic(TransactionIF txn)

Method Summary

int	_p_getFieldCount()
void	addSubjectIdentifier(LocatorIF subject_indicator) PUBLIC: Adds the given subject identifier to the set of subject identifiers for this topic.
void	addSubjectLocator(LocatorIF subject_locator) PUBLIC: Adds the given subject locator to the set of subject locators for this topic.
void	addType(TopicIF type) PUBLIC: Adds a type to this topic.
void	detach()
String	getClassIndicator() INTERNAL: Returns the token that can be used to indicate the class of this instance.
String	getObjectId() PUBLIC: Gets the id of this object.
Collection<OccurrenceIF>	getOccurrences() PUBLIC: Gets the occurrences of this topic.
ReifiableIF	getReified() PUBLIC: Returns the topic map object that this topic reifies.
Collection<AssociationRoleIF>	getRoles() PUBLIC: Gets the association roles played by this topic.
Collection<AssociationRoleIF>	getRolesByType(TopicIF roletype) PUBLIC: Gets the association roles of the specifed type played by this topic.
Collection<AssociationRoleIF>	getRolesByType(TopicIF roletype, TopicIF assoc_type) PUBLIC: Gets the association roles of the specifed type played by this topic.
Collection<LocatorIF>	getSubjectIdentifiers() PUBLIC: Gets the subject identitifers of this topic.
Collection<LocatorIF>	getSubjectLocators() PUBLIC: Gets the subject locators of this topic.
Collection<TopicNameIF>	getTopicNames() PUBLIC: Gets the names of this topic.
Collection<TopicIF>	getTypes() PUBLIC: Gets the types that this topic is an instance of.
void	merge(TopicIF topic) EXPERIMENTAL: Merges the characteristics of one topic into another topic.
void	remove() PUBLIC: Removes the object from its parent.
void	removeSubjectIdentifier(LocatorIF subject_indicator) PUBLIC: Removes the given subject identifier from the set of subject identifiers for this topic.
void	removeSubjectLocator(LocatorIF subject_locator) PUBLIC: Removes the given subject locator from the set of subject locators for this topic.
void	removeType(TopicIF type) PUBLIC: Removes a type from this topic.
String	toString()

Methods inherited from class net.ontopia.topicmaps.impl.rdbms.TMObject

addItemIdentifier, fireEvent, getItemIdentifiers, getTopicMap, isReadOnly, removeItemIdentifier, transactionChanged

Methods inherited from class net.ontopia.persistence.proxy.AbstractRWPersistent

_p_getIdentity, _p_getTransaction, _p_getType, _p_setIdentity, _p_setTransaction, _p_toString, clearAll, detachCollectionField, detachField, executeQuery, getValue, isDeleted, isDirty, isDirty, isDirtyFlushed, isDirtyFlushed, isInDatabase, isLoaded, isNewObject, isPersistent, isTransient, loadCollectionField, loadField, loadFieldNoCheck, loadValue, nextDirty, nextDirty, nextDirtyFlushed, nextDirtyFlushed, setDeleted, setDirty, setDirtyFlushed, setInDatabase, setNewObject, setPersistent, setValue, unsetValue, valueAdded, valueChanged, valueRemoved

Methods inherited from class java.lang.Object

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

Methods inherited from interface net.ontopia.topicmaps.core.TMObjectIF

addItemIdentifier, getItemIdentifiers, getTopicMap, isReadOnly, removeItemIdentifier

Field Detail

LF_subjects

protected static final int LF_subjects

See Also:

Constant Field Values

LF_indicators

protected static final int LF_indicators

See Also:

Constant Field Values

LF_types

protected static final int LF_types

See Also:

Constant Field Values

LF_names

protected static final int LF_names

See Also:

Constant Field Values

LF_occurrences

protected static final int LF_occurrences

See Also:

Constant Field Values

LF_roles

protected static final int LF_roles

See Also:

Constant Field Values

LF_reified

protected static final int LF_reified

See Also:

Constant Field Values

fields

protected static final String[] fields

CLASS_INDICATOR

public static final String CLASS_INDICATOR

See Also:

Constant Field Values

Constructor Detail

Topic

public Topic()

Topic

public Topic(TransactionIF txn)

Method Detail

detach

public void detach()

Specified by:

detach in interface PersistentIF

Specified by:

detach in class AbstractRWPersistent

_p_getFieldCount

public int _p_getFieldCount()

Specified by:

_p_getFieldCount in interface PersistentIF

getClassIndicator

public String getClassIndicator()

Description copied from class: TMObject

INTERNAL: Returns the token that can be used to indicate the class of this instance. This indicator is currently only used by source locators.

Specified by:

getClassIndicator in class TMObject

getObjectId

public String getObjectId()

Description copied from interface: TMObjectIF

PUBLIC: Gets the id of this object. The object id is part of the topic map id space, and must be unique. The object id is not significant (or unique) outside the current topic map. The object id is immutable. The object id is thus stable through this object's lifetime.

Specified by:

getObjectId in interface TMObjectIF

Specified by:

getObjectId in class TMObject

Returns:

string which is this object's id.

getSubjectLocators

public Collection<LocatorIF> getSubjectLocators()

Description copied from interface: TopicIF

PUBLIC: Gets the subject locators of this topic. These are locators for resources that directly address the subject of this topic. Such a resource is also called an addressable subject. The subject locators are not guaranteed to have any specific order within the returned collection.

Specified by:

getSubjectLocators in interface TopicIF

Returns:

A collection of LocatorIF objects serving as subject locators.

addSubjectLocator

public void addSubjectLocator(LocatorIF subject_locator)
                       throws ConstraintViolationException

Description copied from interface: TopicIF

PUBLIC: Adds the given subject locator to the set of subject locators for this topic.

Specified by:

addSubjectLocator in interface TopicIF

Parameters:

subject_locator - A locator for the subject locator to be added; an object implementing LocatorIF.

Throws:

ConstraintViolationException - Thrown if the topic map already has a topic with this subject locator.

removeSubjectLocator

public void removeSubjectLocator(LocatorIF subject_locator)

Description copied from interface: TopicIF

PUBLIC: Removes the given subject locator from the set of subject locators for this topic. If the topic does not have the given subject locator then this method has no effect.

Specified by:

removeSubjectLocator in interface TopicIF

Parameters:

subject_locator - A locator for the subject locator to be removed; an object implementing LocatorIF.

getSubjectIdentifiers

public Collection<LocatorIF> getSubjectIdentifiers()

Description copied from interface: TopicIF

PUBLIC: Gets the subject identitifers of this topic. These are locators for resources that indirectly address or otherwise indicate the subject of this topic. A subject identifier is intended as a surrogate for a subject which cannot be addressed directly. The subject identifiers are not guaranteed to have any specific order within the returned collection.

Specified by:

getSubjectIdentifiers in interface TopicIF

Returns:

A collection of LocatorIF objects serving as subject identifiers.

addSubjectIdentifier

public void addSubjectIdentifier(LocatorIF subject_indicator)
                          throws ConstraintViolationException

Description copied from interface: TopicIF

PUBLIC: Adds the given subject identifier to the set of subject identifiers for this topic.

Specified by:

addSubjectIdentifier in interface TopicIF

Parameters:

subject_indicator - A locator for the subject identifier to be added; an object implementing LocatorIF.

Throws:

ConstraintViolationException - Thrown if the topic map already has a topic with this addressable subject.

removeSubjectIdentifier

public void removeSubjectIdentifier(LocatorIF subject_indicator)

Description copied from interface: TopicIF

PUBLIC: Removes the given subject identifier from the set of subject identifiers for this topic. If the topic does not have the given subject identifier then this method has no effect.

Specified by:

removeSubjectIdentifier in interface TopicIF

Parameters:

subject_indicator - A locator for the subject identifier to be removed; an object implementing LocatorIF.

getTopicNames

public Collection<TopicNameIF> getTopicNames()

Description copied from interface: TopicIF

PUBLIC: Gets the names of this topic.

Specified by:

getTopicNames in interface TopicIF

Returns:

A collection of TopicNameIF objects.

getOccurrences

public Collection<OccurrenceIF> getOccurrences()

Description copied from interface: TopicIF

PUBLIC: Gets the occurrences of this topic. The occurrences are not guaranteed to have any specific order.

Specified by:

getOccurrences in interface TopicIF

Returns:

A collection of OccurrenceIF objects.

getRoles

public Collection<AssociationRoleIF> getRoles()

Description copied from interface: TopicIF

PUBLIC: Gets the association roles played by this topic. There is no guarantee as to the order these are returned in.

Specified by:

getRoles in interface TopicIF

Returns:

A collection of AssociationRoleIF objects.

getRolesByType

public Collection<AssociationRoleIF> getRolesByType(TopicIF roletype)

Description copied from interface: TopicIF

PUBLIC: Gets the association roles of the specifed type played by this topic. There is no guarantee as to the order these are returned in.

Specified by:

getRolesByType in interface TopicIF

Returns:

A collection of AssociationRoleIF objects.

getRolesByType

public Collection<AssociationRoleIF> getRolesByType(TopicIF roletype,
                                                    TopicIF assoc_type)

Description copied from interface: TopicIF

PUBLIC: Gets the association roles of the specifed type played by this topic. The association roles must be part of an association of the specified type. There is no guarantee as to the order these are returned in.

Specified by:

getRolesByType in interface TopicIF

Returns:

A collection of AssociationRoleIF objects.

merge

public void merge(TopicIF topic)

Description copied from interface: TopicIF

EXPERIMENTAL: Merges the characteristics of one topic into another topic. The source topic stripped of characteristics, all of which are moved to the target topic. Duplicate characteristics are suppressed. The topics must be in the same topic map, and the source topic is removed from the topic map.

Specified by:

merge in interface TopicIF

Parameters:

topic - topicIF; the source topic. This is empty after the operation and is removed from the topic map.

remove

public void remove()

Description copied from interface: TMObjectIF

PUBLIC: Removes the object from its parent.

Specified by:

remove in interface TMObjectIF

getTypes

public Collection<TopicIF> getTypes()

Description copied from interface: TopicIF

PUBLIC: Gets the types that this topic is an instance of. There is no guarantee as to which order these will be returned in.

Specified by:

getTypes in interface TopicIF

Returns:

A collection of TopicIF objects.

addType

public void addType(TopicIF type)

Description copied from interface: TopicIF

PUBLIC: Adds a type to this topic.

Specified by:

addType in interface TopicIF

Parameters:

type - The additional type; an object implementing TopicIF.

removeType

public void removeType(TopicIF type)

Description copied from interface: TopicIF

PUBLIC: Removes a type from this topic. If the given topic is not present amongst the types, then the method has no effect.

Specified by:

removeType in interface TopicIF

Parameters:

type - The type to be removed; an object implementing TopicIF.

getReified

public ReifiableIF getReified()

Description copied from interface: TopicIF

PUBLIC: Returns the topic map object that this topic reifies.

Specified by:

getReified in interface TopicIF

toString

public String toString()

Overrides:

toString in class Object