de.deepamehta.plugins.facets

Class FacetsPlugin

Show UML class diagram

java.lang.Object

de.deepamehta.core.osgi.PluginActivator

de.deepamehta.plugins.facets.FacetsPlugin

All Implemented Interfaces:

PluginContext, FacetsService, org.osgi.framework.BundleActivator

public class FacetsPlugin
extends PluginActivator
implements FacetsService

Field Summary

Fields

Modifier and Type	Field and Description
private Logger	logger

Fields inherited from class de.deepamehta.core.osgi.PluginActivator

bundle, dms

Constructor Summary

Constructors

Constructor and Description
FacetsPlugin()

Method Summary

Methods

Modifier and Type	Method and Description
void	addFacetTypeToTopic(long topicId, String facetTypeUri)
private RelatedTopic	fetchChildTopic(DeepaMehtaObject object, AssociationDefinition assocDef) Fetches and returns a child topic or null if no such topic extists.
private ResultList<RelatedTopic>	fetchChildTopics(DeepaMehtaObject object, AssociationDefinition assocDef) Fetches and returns child topics.
private AssociationDefinition	getAssocDef(String facetTypeUri)
private String	getChildTypeUri(String facetTypeUri)
Topic	getFacet(DeepaMehtaObject object, String facetTypeUri) Retrieves a facet value.
Topic	getFacet(long topicId, String facetTypeUri)
ResultList<RelatedTopic>	getFacets(DeepaMehtaObject object, String facetTypeUri) Retrieves the values of a multi-facet.
ResultList<RelatedTopic>	getFacets(long topicId, String facetTypeUri)
Topic	getFacettedTopic(long topicId, List<String> facetTypeUris)
boolean	hasFacet(long topicId, String facetTypeUri, long facetTopicId)
private boolean	isMultiFacet(String facetTypeUri)
void	updateFacet(DeepaMehtaObject object, String facetTypeUri, FacetValue value) Updates a facet.
void	updateFacet(long topicId, String facetTypeUri, FacetValue value)

Methods inherited from class de.deepamehta.core.osgi.PluginActivator

getBundleContext, getPluginName, getStaticResource, getUri, init, preInstall, publishFileSystem, serviceArrived, serviceGone, setCoreService, shutdown, start, stop, toString

Methods inherited from class java.lang.Object

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

Field Detail

logger

private Logger logger

Constructor Detail

FacetsPlugin

public FacetsPlugin()

Method Detail

getFacet

public Topic getFacet(long topicId,
             String facetTypeUri)

Specified by:

getFacet in interface FacetsService

getFacet

public Topic getFacet(DeepaMehtaObject object,
             String facetTypeUri)

Description copied from interface: FacetsService

Retrieves a facet value. ### TODO: rename to getFacetValue ### TODO: add fetchComposite parameter

Specified by:

getFacet in interface FacetsService

Parameters:

object - The facetted object: a topic, association, a type ...

facetTypeUri - URI of the facet type.

Returns:

The retrieved facet value (including its child topics) or null if no such topic extists.

getFacets

public ResultList<RelatedTopic> getFacets(long topicId,
                                 String facetTypeUri)

Specified by:

getFacets in interface FacetsService

getFacets

public ResultList<RelatedTopic> getFacets(DeepaMehtaObject object,
                                 String facetTypeUri)

Description copied from interface: FacetsService

Retrieves the values of a multi-facet. ### TODO: rename to getFacetValues ### TODO: add fetchComposite parameter

Specified by:

getFacets in interface FacetsService

Parameters:

object - The facetted object: a topic, association, a type ...

facetTypeUri - URI of the facet type.

Returns:

The retrieved facet values (including their child topics). The list may be empty.

getFacettedTopic

public Topic getFacettedTopic(long topicId,
                     List<String> facetTypeUris)

Specified by:

getFacettedTopic in interface FacetsService

addFacetTypeToTopic

public void addFacetTypeToTopic(long topicId,
                       String facetTypeUri)

Specified by:

addFacetTypeToTopic in interface FacetsService

updateFacet

public void updateFacet(long topicId,
               String facetTypeUri,
               FacetValue value)

Specified by:

updateFacet in interface FacetsService

updateFacet

public void updateFacet(DeepaMehtaObject object,
               String facetTypeUri,
               FacetValue value)

Description copied from interface: FacetsService

Updates a facet.

Specified by:

updateFacet in interface FacetsService

Parameters:

object - The facetted object: a topic, association, a type ...

facetTypeUri - URI of the facet type.

hasFacet

public boolean hasFacet(long topicId,
               String facetTypeUri,
               long facetTopicId)

Specified by:

hasFacet in interface FacetsService

fetchChildTopic

private RelatedTopic fetchChildTopic(DeepaMehtaObject object,
                           AssociationDefinition assocDef)

Fetches and returns a child topic or null if no such topic extists.

Note: There is a principal copy in AttachedDeepaMehtaObject but here the precondition is different: The given association definition must not necessarily originate from the given object's type definition. ### TODO: meanwhile we have the ValueStorage. Can we use its method instead?

fetchChildTopics

private ResultList<RelatedTopic> fetchChildTopics(DeepaMehtaObject object,
                                        AssociationDefinition assocDef)

Fetches and returns child topics.

Note: There is a principal copy in AttachedDeepaMehtaObject but here the precondition is different: The given association definition must not necessarily originate from the given object's type definition. ### TODO: meanwhile we have the ValueStorage. Can we use its method instead?

isMultiFacet

private boolean isMultiFacet(String facetTypeUri)

getChildTypeUri

private String getChildTypeUri(String facetTypeUri)

getAssocDef

private AssociationDefinition getAssocDef(String facetTypeUri)