com.hp.hpl.jena.ontology
Class OntModelSpec

java.lang.Object
  com.hp.hpl.jena.ontology.OntModelSpec

public class OntModelSpec
extends Object

Encapsulates a description of the components of an ontology model, including the storage scheme, reasoner and language profile.

Version:

CVS $Id: OntModelSpec.java,v 1.2 2009-10-06 13:04:34 ian_dickinson Exp $

Author:

Ian Dickinson, HP Labs (email)

Field Summary

static OntModelSpec	DAML_MEM A specification for DAML models that are stored in memory and do no additional entailment reasoning
static OntModelSpec	DAML_MEM_RDFS_INF A specification for DAML models that are stored in memory and use the RDFS inferencer for additional entailments
static OntModelSpec	DAML_MEM_RULE_INF A specification for DAML models that are stored in memory and use a subset of the DAML semantic model additional entailments
static OntModelSpec	DAML_MEM_TRANS_INF A specification for DAML models that are stored in memory and use the transitive reasoner for entailments
static OntModelSpec	OWL_DL_MEM A specification for OWL DL models that are stored in memory and do no additional entailment reasoning
static OntModelSpec	OWL_DL_MEM_RDFS_INF A specification for OWL DL models that are stored in memory and use the RDFS inferencer for additional entailments
static OntModelSpec	OWL_DL_MEM_RULE_INF A specification for OWL DL models that are stored in memory and use the OWL rules inference engine for additional entailments
static OntModelSpec	OWL_DL_MEM_TRANS_INF A specification for OWL DL models that are stored in memory and use the transitive inferencer for additional entailments
static OntModelSpec	OWL_LITE_MEM A specification for OWL Lite models that are stored in memory and do no entailment additional reasoning
static OntModelSpec	OWL_LITE_MEM_RDFS_INF A specification for OWL Lite models that are stored in memory and use the RDFS inferencer for additional entailments
static OntModelSpec	OWL_LITE_MEM_RULES_INF A specification for OWL Lite models that are stored in memory and use the OWL rules inference engine for additional entailments
static OntModelSpec	OWL_LITE_MEM_TRANS_INF A specification for OWL Lite models that are stored in memory and use the transitive inferencer for additional entailments
static OntModelSpec	OWL_MEM A specification for OWL models that are stored in memory and do no additional entailment reasoning
static OntModelSpec	OWL_MEM_MICRO_RULE_INF A specification for OWL models that are stored in memory and use the micro OWL rules inference engine for additional entailments
static OntModelSpec	OWL_MEM_MINI_RULE_INF A specification for OWL models that are stored in memory and use the mini OWL rules inference engine for additional entailments
static OntModelSpec	OWL_MEM_RDFS_INF A specification for OWL models that are stored in memory and use the RDFS inferencer for additional entailments
static OntModelSpec	OWL_MEM_RULE_INF A specification for OWL models that are stored in memory and use the OWL rules inference engine for additional entailments
static OntModelSpec	OWL_MEM_TRANS_INF A specification for OWL models that are stored in memory and use the transitive inferencer for additional entailments
static OntModelSpec	RDFS_MEM A specification for RDFS ontology models that are stored in memory and do no additional entailment reasoning
static OntModelSpec	RDFS_MEM_RDFS_INF A specification for RDFS ontology models that are stored in memory and use the RDFS inferencer for additional entailments
static OntModelSpec	RDFS_MEM_TRANS_INF A specification for RDFS ontology models that are stored in memory and use the transitive reasoner for entailments

Constructor Summary

OntModelSpec(ModelMaker baseMaker, ModelMaker importsMaker, OntDocumentManager docMgr, ReasonerFactory rFactory, String languageURI)
Construct a new ontology model specification from the supplied components.

OntModelSpec(ModelMaker importsMaker, OntDocumentManager docMgr, ReasonerFactory rFactory, String languageURI)
Construct a new ontology model specification with the given specification parameters

OntModelSpec(OntModelSpec spec)
Create one model spec as a copy of another.

OntModelSpec(String baseModelName, ModelMaker baseMaker, ModelMaker importsMaker, OntDocumentManager docMgr, ReasonerFactory rFactory, String languageURI)
Construct a new ontology model specification from the supplied components.

Method Summary

static OntModelSpec	assemble(Model model) Answer the OntModelSpec described using the Jena Assembler vocabulary properties of the single resource in model of type JA:OntModelSpec.
static OntModelSpec	assemble(Resource root) Answer the OntModelSpec described using the Jena Assembler vocabulary properties of root.
Model	createBaseModel() Answer a base model constructed according to this specification.
Model	doCreateModel() Create an OntModel according to this model specification.
boolean	equals(Object other)
ModelMaker	getBaseModelMaker() Answer the model maker used for creating base models.
static OntModelSpec	getDefaultSpec(String languageURI) Answer a default specification for the given language URI.
OntDocumentManager	getDocumentManager() Answer the document manager for this model specification.
ModelGetter	getImportModelGetter()
ModelMaker	getImportModelMaker() Answer the model maker used for creating imported models.
String[][]	getKnownPrefixes() Returns the set of known (built-in) namespace prefixes for this OntModelSpec
String	getLanguage() Answer the URI of the ontology language to use when constructing models from this specification.
Profile	getProfile() Answer the language profile for this ontology specification
Reasoner	getReasoner() Answer the reasoner that will be used to infer additional entailed triples in the ontology model.
ReasonerFactory	getReasonerFactory() Answer the current reasoner factory
Model	implementCreateModelOver(String name) Create an OntModel according to this model specification.
void	setBaseModelMaker(ModelMaker m) Set the model maker used for base models.
void	setDocumentManager(OntDocumentManager docMgr) Set the document manager in this specification
void	setImportModelGetter(ModelGetter mg)
void	setImportModelMaker(ModelMaker maker) Set the model maker that will be used when the ontology model needs to create an additional container for an imported ontology
void	setLanguage(String languageURI) Set the URI of the ontology to use for models that conform to this specification.
void	setReasoner(Reasoner reasoner) Set the reasoner that will be used by ontology models that conform to this specification to compute entailments.
void	setReasonerFactory(ReasonerFactory rFactory) Set the factory object that will be used to generate the reasoner object for this model specification.

Methods inherited from class java.lang.Object

getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

OWL_MEM

public static final OntModelSpec OWL_MEM

A specification for OWL models that are stored in memory and do no additional entailment reasoning

OWL_MEM_RDFS_INF

public static final OntModelSpec OWL_MEM_RDFS_INF

A specification for OWL models that are stored in memory and use the RDFS inferencer for additional entailments

OWL_MEM_TRANS_INF

public static final OntModelSpec OWL_MEM_TRANS_INF

A specification for OWL models that are stored in memory and use the transitive inferencer for additional entailments

OWL_MEM_RULE_INF

public static final OntModelSpec OWL_MEM_RULE_INF

A specification for OWL models that are stored in memory and use the OWL rules inference engine for additional entailments

OWL_MEM_MICRO_RULE_INF

public static final OntModelSpec OWL_MEM_MICRO_RULE_INF

A specification for OWL models that are stored in memory and use the micro OWL rules inference engine for additional entailments

OWL_MEM_MINI_RULE_INF

public static final OntModelSpec OWL_MEM_MINI_RULE_INF

A specification for OWL models that are stored in memory and use the mini OWL rules inference engine for additional entailments

OWL_DL_MEM

public static final OntModelSpec OWL_DL_MEM

A specification for OWL DL models that are stored in memory and do no additional entailment reasoning

OWL_DL_MEM_RDFS_INF

public static final OntModelSpec OWL_DL_MEM_RDFS_INF

A specification for OWL DL models that are stored in memory and use the RDFS inferencer for additional entailments

OWL_DL_MEM_TRANS_INF

public static final OntModelSpec OWL_DL_MEM_TRANS_INF

A specification for OWL DL models that are stored in memory and use the transitive inferencer for additional entailments

OWL_DL_MEM_RULE_INF

public static final OntModelSpec OWL_DL_MEM_RULE_INF

A specification for OWL DL models that are stored in memory and use the OWL rules inference engine for additional entailments

OWL_LITE_MEM

public static final OntModelSpec OWL_LITE_MEM

A specification for OWL Lite models that are stored in memory and do no entailment additional reasoning

OWL_LITE_MEM_TRANS_INF

public static final OntModelSpec OWL_LITE_MEM_TRANS_INF

A specification for OWL Lite models that are stored in memory and use the transitive inferencer for additional entailments

OWL_LITE_MEM_RDFS_INF

public static final OntModelSpec OWL_LITE_MEM_RDFS_INF

A specification for OWL Lite models that are stored in memory and use the RDFS inferencer for additional entailments

OWL_LITE_MEM_RULES_INF

public static final OntModelSpec OWL_LITE_MEM_RULES_INF

A specification for OWL Lite models that are stored in memory and use the OWL rules inference engine for additional entailments

DAML_MEM

public static final OntModelSpec DAML_MEM

A specification for DAML models that are stored in memory and do no additional entailment reasoning

DAML_MEM_TRANS_INF

public static final OntModelSpec DAML_MEM_TRANS_INF

A specification for DAML models that are stored in memory and use the transitive reasoner for entailments

DAML_MEM_RDFS_INF

public static final OntModelSpec DAML_MEM_RDFS_INF

A specification for DAML models that are stored in memory and use the RDFS inferencer for additional entailments

DAML_MEM_RULE_INF

public static final OntModelSpec DAML_MEM_RULE_INF

A specification for DAML models that are stored in memory and use a subset of the DAML semantic model additional entailments

RDFS_MEM

public static final OntModelSpec RDFS_MEM

A specification for RDFS ontology models that are stored in memory and do no additional entailment reasoning

RDFS_MEM_TRANS_INF

public static final OntModelSpec RDFS_MEM_TRANS_INF

A specification for RDFS ontology models that are stored in memory and use the transitive reasoner for entailments

RDFS_MEM_RDFS_INF

public static final OntModelSpec RDFS_MEM_RDFS_INF

A specification for RDFS ontology models that are stored in memory and use the RDFS inferencer for additional entailments

Constructor Detail

OntModelSpec

public OntModelSpec(ModelMaker importsMaker,
                    OntDocumentManager docMgr,
                    ReasonerFactory rFactory,
                    String languageURI)

Construct a new ontology model specification with the given specification parameters

Parameters:

importsMaker - The model maker, which will be used to construct stores for statements in the imported ontologies and the base ontology. Use null to get a default (memory) model maker.

docMgr - The document manager, or null for the default document manager.

rFactory - The factory for the reasoner to use to infer additional triples in the model, or null for no reasoner

languageURI - The URI of the ontology language. Required.

OntModelSpec

public OntModelSpec(ModelMaker baseMaker,
                    ModelMaker importsMaker,
                    OntDocumentManager docMgr,
                    ReasonerFactory rFactory,
                    String languageURI)

Construct a new ontology model specification from the supplied components.

Parameters:

baseMaker - the model-maker to use for the base model

importsMaker - the model-maker to use for imported models

docMgr - the document manager (null for the default manager)

rFactory - the reasoner (null for no reasoner)

languageURI - the ontology language URI (must not be null)

OntModelSpec

public OntModelSpec(String baseModelName,
                    ModelMaker baseMaker,
                    ModelMaker importsMaker,
                    OntDocumentManager docMgr,
                    ReasonerFactory rFactory,
                    String languageURI)

Construct a new ontology model specification from the supplied components.

Parameters:

baseModelName - the name of the model in the baseModelMaker

baseMaker - the model-maker to use for the base model

importsMaker - the model-maker to use for imported models

docMgr - the document manager (null for the default manager)

rFactory - the reasoner (null for no reasoner)

languageURI - the ontology language URI (must not be null)

OntModelSpec

public OntModelSpec(OntModelSpec spec)

Create one model spec as a copy of another. This is useful when what is required is similar to an existing spec, but with some changes. Note: this is only a shallow copy, so the structured objects (reasoners, document managers, etc) are not themselves copied. Thus, even after calling this copy constructor, making a change to the document manager in the copy specification will also affect the one that the copy was made from. The correct idiom is to replace the object before side-effecting it, e.g:

   OntModelSpec newSpec = new OntModelSpec( existingSpec );
   newSpec.setDocumentManager( new OntDocumentManager() );
   newSpec.getDocumentManager().setMetaDataSearchPath( "..." );
 

Parameters:

spec -

Method Detail

equals

public boolean equals(Object other)

Overrides:

equals in class Object

getImportModelMaker

public ModelMaker getImportModelMaker()

Answer the model maker used for creating imported models.

Returns:

The ModelMaker that is used to get or create a model used to hold imports to an OntModel.

getBaseModelMaker

public ModelMaker getBaseModelMaker()

Answer the model maker used for creating base models.

getImportModelGetter

public ModelGetter getImportModelGetter()

setImportModelGetter

public void setImportModelGetter(ModelGetter mg)

assemble

public static OntModelSpec assemble(Resource root)

Answer the OntModelSpec described using the Jena Assembler vocabulary properties of root. If the assembled resource is not an OntModelSpec, throw an exception reporting the constructed class.

assemble

public static OntModelSpec assemble(Model model)

Answer the OntModelSpec described using the Jena Assembler vocabulary properties of the single resource in model of type JA:OntModelSpec.

getDefaultSpec

public static OntModelSpec getDefaultSpec(String languageURI)

Answer a default specification for the given language URI. This default will typically use a memory model and have minimal inferencing capabilities. Specifically, OWL and RDFS languages will have RDFS level inferencing capability (chosen to give a reasonable balance between power and efficiency of computation), and DAML language will have the minimal DAML rule reasoner. To get other (more powerful or less powerful) reasoning capabilities, users should create ontology models by passing an explicit OntModelSpec parameter to the model factory.

Parameters:

languageURI - The ontology language we want a default model spec for

Returns:

The default model spec for that language

Throws:

OntologyException - if the URI is not a recognised name of an ontology language

getDocumentManager

public OntDocumentManager getDocumentManager()

Answer the document manager for this model specification. Defaults to a standard instance of OntDocumentManager

Returns:

The document manager to be used by models matching this specification

setDocumentManager

public void setDocumentManager(OntDocumentManager docMgr)

Set the document manager in this specification

Parameters:

docMgr - The new document manager

setImportModelMaker

public void setImportModelMaker(ModelMaker maker)

Set the model maker that will be used when the ontology model needs to create an additional container for an imported ontology

Parameters:

maker - The new model maker to use

setBaseModelMaker

public void setBaseModelMaker(ModelMaker m)

Set the model maker used for base models.

Parameters:

m - The model maker that is used to create the base model if one is not supplied when a model is created.

getReasoner

public Reasoner getReasoner()

Answer the reasoner that will be used to infer additional entailed triples in the ontology model.

Returns:

The reasoner for this specification

setReasoner

public void setReasoner(Reasoner reasoner)

Set the reasoner that will be used by ontology models that conform to this specification to compute entailments. Note: The reasoner is generated on demand by the reasoner factory. To prevent this spec from having a reasoner, set the reasoner factory to null, see setReasonerFactory(com.hp.hpl.jena.reasoner.ReasonerFactory).

Parameters:

reasoner - The new reasoner

setReasonerFactory

public void setReasonerFactory(ReasonerFactory rFactory)

Set the factory object that will be used to generate the reasoner object for this model specification. Note that the reasoner itself is cached, so setting the factory after a call to getReasoner() will have no effect.

Parameters:

rFactory - The new reasoner factory, or null to prevent any reasoner being used

getReasonerFactory

public ReasonerFactory getReasonerFactory()

Answer the current reasoner factory

Returns:

The reasoner factory, or null.

getLanguage

public String getLanguage()

Answer the URI of the ontology language to use when constructing models from this specification. Well known language URI's are available from the ProfileRegistry

Returns:

The ontology language URI

setLanguage

public void setLanguage(String languageURI)

Set the URI of the ontology to use for models that conform to this specification.

Parameters:

languageURI - The new language URI

Throws:

OntologyException - if the URI does not map to a known language profile

getProfile

public Profile getProfile()

Answer the language profile for this ontology specification

Returns:

An ontology language profile object

doCreateModel

public Model doCreateModel()

Create an OntModel according to this model specification. The base model comes from the attached base ModelMaker.

Returns:

an OntModel satisfying this specification

implementCreateModelOver

public Model implementCreateModelOver(String name)

Create an OntModel according to this model specification. The base model comes from the underlying ModelMaker and is named by the given name.

createBaseModel

public Model createBaseModel()

Answer a base model constructed according to this specification. This is used for the "base" (i.e. non-imported) model for an OntModel.

getKnownPrefixes

public String[][] getKnownPrefixes()

Returns the set of known (built-in) namespace prefixes for this OntModelSpec

Returns:

Known prefixes as an array of length-2 arrays