systems.dmx.core

Interface Topic

Show UML class diagram

All Superinterfaces:

DMXObject, Identifiable, JSONEnabled

All Known Subinterfaces:

AssociationType, DMXType, RelatedTopic, TopicType

All Known Implementing Classes:

AssociationTypeImpl, DMXTypeImpl, RelatedTopicImpl, TopicImpl, TopicTypeImpl

public interface Topic
extends DMXObject

Specification of a topic -- DMX's central data object.

Author:

Jörg Richter

Method Summary

Modifier and Type	Method and Description
Topic	findChildTopic(String topicTypeUri) Searches this topic's child topics for a topic of the given type.
TopicModel	getModel()
Topic	loadChildTopics()
Topic	loadChildTopics(String assocDefUri)
void	update(TopicModel model)

Methods inherited from interface systems.dmx.core.DMXObject

delete, getAssociation, getAssociations, getChildTopics, getDatabaseVendorObject, getId, getProperty, getRelatedAssociation, getRelatedAssociations, getRelatedTopic, getRelatedTopics, getRelatedTopics, getRelatedTopics, getSimpleValue, getType, getTypeUri, getUri, hasProperty, removeProperty, setChildTopics, setProperty, setSimpleValue, setSimpleValue, setSimpleValue, setSimpleValue, setSimpleValue, setTypeUri, setUri, updateChildTopics

Methods inherited from interface systems.dmx.core.JSONEnabled

toJSON

Method Detail

update

void update(TopicModel model)

findChildTopic

Topic findChildTopic(String topicTypeUri)

Searches this topic's child topics for a topic of the given type. Only the child topics which are already loaded into memory are searched; the DB is not accessed.

The first topic found is returned, according to a depth-first search. For multiple-value childs the first topic is returned. If the given type matches this topic directly it is returned immediately.

The search is driven by this topic's type definition. That is child topics which do not adhere to the type definition are not found.

TODO: make this generic by moving to DMXObject interface?

Returns:

the found topic, or null.

loadChildTopics

Topic loadChildTopics()

Specified by:

loadChildTopics in interface DMXObject

loadChildTopics

Topic loadChildTopics(String assocDefUri)

Specified by:

loadChildTopics in interface DMXObject

getModel

TopicModel getModel()

Specified by:

getModel in interface DMXObject