edu.cornell.mannlib.vitro.webapp.modelaccess.adapters

Class ModelMakerWithPersistentEmptyModels

java.lang.Object

edu.cornell.mannlib.vitro.webapp.modelaccess.adapters.AbstractModelMakerDecorator

edu.cornell.mannlib.vitro.webapp.modelaccess.adapters.ModelMakerWithPersistentEmptyModels

All Implemented Interfaces:

com.hp.hpl.jena.rdf.model.ModelGetter, com.hp.hpl.jena.rdf.model.ModelMaker, com.hp.hpl.jena.rdf.model.ModelSource

public class ModelMakerWithPersistentEmptyModels
extends AbstractModelMakerDecorator

This ModelMaker will remember the URIs of models you create, even if you don't add triples to them. Of course, when VIVO is shut down, this ModelMaker forgets. This is a useful decorator for some triple stores which do not remember empty models. SDB, for example. With this decorator, a GUI can offer to let you create a model, and then offer to let you add triples to it. Without this decorator, you would need to do that in a single step. If you are dealing with a triple store where listModels() is a costly operation, you might be better off using a ListCachingModelMaker instead. The drawback is that ListCachingModelMaker will not see models that were created at a lower level; perhaps by RDFServiceDataset.getNamedModel(). The methods that create a model must add its name to the list. The methods that remove a model must remove its name from the list.

Constructor Summary

Constructors

Constructor and Description
ModelMakerWithPersistentEmptyModels(com.hp.hpl.jena.rdf.model.ModelMaker inner)

Method Summary

Modifier and Type	Method and Description
com.hp.hpl.jena.rdf.model.Model	createModel(String name)
com.hp.hpl.jena.rdf.model.Model	createModel(String name, boolean strict)
com.hp.hpl.jena.rdf.model.Model	getModel(String URL)
com.hp.hpl.jena.rdf.model.Model	getModel(String URL, com.hp.hpl.jena.rdf.model.ModelReader loadIfAbsent)
boolean	hasModel(String name)
com.hp.hpl.jena.util.iterator.ExtendedIterator<String>	listModels()
com.hp.hpl.jena.rdf.model.Model	openModel(String name)
com.hp.hpl.jena.rdf.model.Model	openModel(String name, boolean strict)
com.hp.hpl.jena.rdf.model.Model	openModelIfPresent(String name)
void	removeModel(String name)

Methods inherited from class edu.cornell.mannlib.vitro.webapp.modelaccess.adapters.AbstractModelMakerDecorator

close, createDefaultModel, createFreshModel, getGraphMaker, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

ModelMakerWithPersistentEmptyModels

public ModelMakerWithPersistentEmptyModels(com.hp.hpl.jena.rdf.model.ModelMaker inner)

Method Detail

hasModel

public boolean hasModel(String name)

Specified by:

hasModel in interface com.hp.hpl.jena.rdf.model.ModelMaker

Overrides:

hasModel in class AbstractModelMakerDecorator

listModels

public com.hp.hpl.jena.util.iterator.ExtendedIterator<String> listModels()

Specified by:

listModels in interface com.hp.hpl.jena.rdf.model.ModelMaker

Overrides:

listModels in class AbstractModelMakerDecorator

getModel

public com.hp.hpl.jena.rdf.model.Model getModel(String URL)

Specified by:

getModel in interface com.hp.hpl.jena.rdf.model.ModelGetter

Overrides:

getModel in class AbstractModelMakerDecorator

getModel

public com.hp.hpl.jena.rdf.model.Model getModel(String URL,
                                                com.hp.hpl.jena.rdf.model.ModelReader loadIfAbsent)

Specified by:

getModel in interface com.hp.hpl.jena.rdf.model.ModelGetter

Overrides:

getModel in class AbstractModelMakerDecorator

createModel

public com.hp.hpl.jena.rdf.model.Model createModel(String name,
                                                   boolean strict)

Specified by:

createModel in interface com.hp.hpl.jena.rdf.model.ModelMaker

Overrides:

createModel in class AbstractModelMakerDecorator

createModel

public com.hp.hpl.jena.rdf.model.Model createModel(String name)

Specified by:

createModel in interface com.hp.hpl.jena.rdf.model.ModelMaker

Overrides:

createModel in class AbstractModelMakerDecorator

openModel

public com.hp.hpl.jena.rdf.model.Model openModel(String name)

Specified by:

openModel in interface com.hp.hpl.jena.rdf.model.ModelSource

Overrides:

openModel in class AbstractModelMakerDecorator

openModelIfPresent

public com.hp.hpl.jena.rdf.model.Model openModelIfPresent(String name)

Specified by:

openModelIfPresent in interface com.hp.hpl.jena.rdf.model.ModelSource

Overrides:

openModelIfPresent in class AbstractModelMakerDecorator

openModel

public com.hp.hpl.jena.rdf.model.Model openModel(String name,
                                                 boolean strict)

Specified by:

openModel in interface com.hp.hpl.jena.rdf.model.ModelMaker

Overrides:

openModel in class AbstractModelMakerDecorator

removeModel

public void removeModel(String name)

Specified by:

removeModel in interface com.hp.hpl.jena.rdf.model.ModelMaker

Overrides:

removeModel in class AbstractModelMakerDecorator