org.openrdf.sesame.sailimpl.rdbms
Class RdfSchemaRepository

java.lang.Object
  org.openrdf.sesame.sailimpl.rdbms.RdfSource
      org.openrdf.sesame.sailimpl.rdbms.RdfRepository
          org.openrdf.sesame.sailimpl.rdbms.RdfSchemaRepository

All Implemented Interfaces:

RdfRepository, RdfSchemaRepository, RdfSchemaSource, RdfSource, Sail, TableNames, ValueFactory

Direct Known Subclasses:

VersioningRdbmsSail

public class RdfSchemaRepository

extends RdfRepository

implements RdfSchemaRepository, TableNames

A portable implementation of the RdfSchemaRepository interface for relational databases. This class defines the RDF Schema specific methods and takes care of RDF Model Theory inferencing. The superclasses define the basic RDF functionality.

Version:

$Revision: 1.15.4.5 $

Author:

Arjohn Kampman

Field Summary

static String	INFERENCER_KEY Key used to store a fully qualified inferencer class name in the initialization parameters.
int	rdfAltId
int	rdfBagId
int	rdfFirstId
int	rdfListId
int	rdfNilId
int	rdfObjectId
int	rdfPredicateId
int	rdfPropertyId
int	rdfRestId
int	rdfsClassId
int	rdfsCommentId
int	rdfsContainerId
int	rdfsContainerMembershipPropertyId
int	rdfsDatatypeId
int	rdfsDomainId
int	rdfSeqId
int	rdfsIsDefinedById
int	rdfsLabelId
int	rdfsLiteralId
int	rdfsMemberId
int	rdfsRangeId
int	rdfsResourceId
int	rdfsSeeAlsoId
int	rdfsSubClassOfId
int	rdfsSubPropertyOfId
int	rdfStatementId
int	rdfSubjectId
int	rdfTypeId
int	rdfValueId
int	rdfXMLLiteralId
static String	USE_DEPENDENCY_INFERENCER_KEY

Fields inherited from class org.openrdf.sesame.sailimpl.rdbms.RdfSource

JDBC_DRIVER_KEY, JDBC_URL_KEY, KEY_EXPORT_FLAGS, KEY_SCHEMACREATOR, KEY_SCHEMAVERSION, PASSWORD_KEY, USER_KEY, VALUE_DIRTY, VALUE_UP_TO_DATE

Fields inherited from interface org.openrdf.sesame.sailimpl.rdbms.TableNames

ADDED_TRIPLES_TABLE, ALL_INFERRED_TABLE, ALL_NEW_TRIPLES_TABLE, CLASS_TABLE, DEPEND_TABLE, DIRECT_SUBCLASSOF_TABLE, DIRECT_SUBPROPERTYOF_TABLE, DOMAIN_TABLE, EXPIRED_LITERALS_TABLE, EXPIRED_RESOURCES_TABLE, EXPIRED_TRIPLES_TABLE, EXPIRED_VALUES_TABLE, GROUNDED_TRIPLES_TABLE, INFERRED_TABLE, INSTANCEOF_TABLE, LITERALS_TABLE, NAMESPACES_TABLE, NEW_GROUNDED_TRIPLES_TABLE, NEW_TRIPLES_TABLE, PROPER_INSTANCEOF_TABLE, PROPERTY_TABLE, RANGE_TABLE, RAW_TRIPLES_TABLE, REP_INFO_TABLE, RESOURCES_TABLE, SUBCLASSOF_TABLE, SUBPROPERTYOF_TABLE, TRIPLES_TABLE

Constructor Summary

RdfSchemaRepository()

Method Summary

void	clearRepository() Clears the repository.
StatementIterator	getClasses() Gets all defined classes.
StatementIterator	getDirectSubClassOf(Resource subClass, Resource superClass) Gets all direct subClassOf relations with a specific sub- and/or superclass.
StatementIterator	getDirectSubPropertyOf(Resource subProperty, Resource superProperty) Gets all direct subPropertyOf relations with a specific sub- and/or superproperty.
StatementIterator	getDirectType(Resource anInstance, Resource aClass) Gets all direct type relations with a specific instance and/or class.
StatementIterator	getDomain(Resource prop, Resource domain) Gets all domain relations with a specific property and/or domain class.
StatementIterator	getExplicitStatements(Resource subj, URI pred, Value obj) Gets all explicitly added statements with a specific subject, predicate and/or object.
LiteralIterator	getLiterals(String label, String language, URI datatype) Gets all literals with a specific label, language and/or datatype.
StatementIterator	getProperties() Gets all defined properties.
StatementIterator	getRange(Resource prop, Resource domain) Gets all range relations with a specific property and/or range class.
RDBMS	getRDBMS()
StatementIterator	getSubClassOf(Resource subClass, Resource superClass) Gets all subClassOf relations with a specific sub- and/or superclass.
StatementIterator	getSubPropertyOf(Resource subProperty, Resource superProperty) Gets all subPropertyOf relations with a specific sub- and/or superproperty.
StatementIterator	getType(Resource anInstance, Resource aClass) Gets all type relations with a specific instance and/or class.
boolean	hasExplicitStatement(Resource subj, URI pred, Value obj) Checks if an explicitly added statement with a specific subject, predicate and/or object is present in the repository.
void	initialize(Map configParams) Initializes the Sail using a set of configuration parameters.
boolean	isClass(Resource resource) Checks whether the supplied resource represents a class.
boolean	isDirectSubClassOf(Resource subClass, Resource superClass) Checks whether one resource is a direct subclass of another.
boolean	isDirectSubPropertyOf(Resource subProperty, Resource superProperty) Checks whether one resource is a direct subproperty of another.
boolean	isDirectType(Resource anInstance, Resource aClass) Checks whether one resource is a direct instance of another.
boolean	isProperty(Resource resource) Checks whether the supplied resource represents a property.
boolean	isSubClassOf(Resource subClass, Resource superClass) Checks whether one resource is a subclass of another.
boolean	isSubPropertyOf(Resource subProperty, Resource superProperty) Checks whether one resource is a subproperty of another.
boolean	isType(Resource anInstance, Resource aClass) Checks whether one resource is an instance of another.

Methods inherited from class org.openrdf.sesame.sailimpl.rdbms.RdfRepository

addListener, addStatement, changeNamespacePrefix, commitTransaction, removeListener, removeStatements, startTransaction, transactionStarted

Methods inherited from class org.openrdf.sesame.sailimpl.rdbms.RdfSource

createBNode, createBNode, createLiteral, createLiteral, createLiteral, createStatement, createURI, createURI, getLiteral, getNamespaces, getResource, getStatements, getStatements, getValue, getValueFactory, hasStatement, hasStatement, initialize, initialize, optimizeQuery, shutDown

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.openrdf.sesame.sail.RdfSource

getNamespaces, getStatements, getValueFactory, hasStatement, optimizeQuery

Methods inherited from interface org.openrdf.sesame.sail.Sail

shutDown

Methods inherited from interface org.openrdf.sesame.sail.RdfRepository

addListener, addStatement, changeNamespacePrefix, commitTransaction, removeListener, removeStatements, startTransaction, transactionStarted

Field Detail

INFERENCER_KEY

public static final String INFERENCER_KEY

Key used to store a fully qualified inferencer class name in the initialization parameters.

See Also:

Constant Field Values

USE_DEPENDENCY_INFERENCER_KEY

public static final String USE_DEPENDENCY_INFERENCER_KEY

See Also:

Constant Field Values

rdfTypeId

public int rdfTypeId

rdfPropertyId

public int rdfPropertyId

rdfXMLLiteralId

public int rdfXMLLiteralId

rdfStatementId

public int rdfStatementId

rdfSubjectId

public int rdfSubjectId

rdfPredicateId

public int rdfPredicateId

rdfObjectId

public int rdfObjectId

rdfAltId

public int rdfAltId

rdfBagId

public int rdfBagId

rdfSeqId

public int rdfSeqId

rdfListId

public int rdfListId

rdfFirstId

public int rdfFirstId

rdfRestId

public int rdfRestId

rdfNilId

public int rdfNilId

rdfValueId

public int rdfValueId

rdfsResourceId

public int rdfsResourceId

rdfsLiteralId

public int rdfsLiteralId

rdfsClassId

public int rdfsClassId

rdfsSubClassOfId

public int rdfsSubClassOfId

rdfsSubPropertyOfId

public int rdfsSubPropertyOfId

rdfsDomainId

public int rdfsDomainId

rdfsRangeId

public int rdfsRangeId

rdfsCommentId

public int rdfsCommentId

rdfsLabelId

public int rdfsLabelId

rdfsDatatypeId

public int rdfsDatatypeId

rdfsContainerId

public int rdfsContainerId

rdfsMemberId

public int rdfsMemberId

rdfsContainerMembershipPropertyId

public int rdfsContainerMembershipPropertyId

rdfsIsDefinedById

public int rdfsIsDefinedById

rdfsSeeAlsoId

public int rdfsSeeAlsoId

Constructor Detail

RdfSchemaRepository

public RdfSchemaRepository()

Method Detail

initialize

public void initialize(Map configParams)
                throws SailInitializationException

Description copied from interface: Sail

Initializes the Sail using a set of configuration parameters. The relevant names and values of the parameters are determined by the implementation of the interface.

Specified by:

initialize in interface Sail

Overrides:

initialize in class RdfRepository

Throws:

SailInitializationException

See Also:

Sail.initialize(java.util.Map)

clearRepository

public void clearRepository()
                     throws SailUpdateException

Description copied from interface: RdfRepository

Clears the repository. After the repository was cleared, it will be in the same state as after initialization. You must start a transaction before this method can be used.

Specified by:

clearRepository in interface RdfRepository

Overrides:

clearRepository in class RdfRepository

Throws:

SailUpdateException

getExplicitStatements

public StatementIterator getExplicitStatements(Resource subj,
                                               URI pred,
                                               Value obj)

Description copied from interface: RdfSchemaSource

Gets all explicitly added statements with a specific subject, predicate and/or object. All of these parameters may be null to indicate wildcards.

Specified by:

getExplicitStatements in interface RdfSchemaSource

Parameters:

subj - subject of pattern

pred - predicate of pattern

obj - object of pattern

Returns:

iterator over statements

See Also:

RdfSource.getStatements(org.openrdf.model.Resource, org.openrdf.model.URI, org.openrdf.model.Value)

hasExplicitStatement

public boolean hasExplicitStatement(Resource subj,
                                    URI pred,
                                    Value obj)

Description copied from interface: RdfSchemaSource

Checks if an explicitly added statement with a specific subject, predicate and/or object is present in the repository. All of these parameters may be null to indicate wildcards.

Specified by:

hasExplicitStatement in interface RdfSchemaSource

Parameters:

subj - subject of statement

pred - predicate of statement

obj - object of statement

Returns:

boolean indicating if the specified statement is present.

See Also:

RdfSource.hasStatement(org.openrdf.model.Resource, org.openrdf.model.URI, org.openrdf.model.Value)

getClasses

public StatementIterator getClasses()

Description copied from interface: RdfSchemaSource

Gets all defined classes.

Specified by:

getClasses in interface RdfSchemaSource

Returns:

A StatementIterator containing statements of the form (someClass, rdf:type, rdfs:Class).

isClass

public boolean isClass(Resource resource)

Description copied from interface: RdfSchemaSource

Checks whether the supplied resource represents a class.

Specified by:

isClass in interface RdfSchemaSource

Parameters:

resource - A resource

Returns:

true if resource is a class, false otherwise.

getProperties

public StatementIterator getProperties()

Description copied from interface: RdfSchemaSource

Gets all defined properties.

Specified by:

getProperties in interface RdfSchemaSource

Returns:

A StatementIterator containing statements of the form (someProperty, rdf:type, rdf:Property).

isProperty

public boolean isProperty(Resource resource)

Description copied from interface: RdfSchemaSource

Checks whether the supplied resource represents a property.

Specified by:

isProperty in interface RdfSchemaSource

Parameters:

resource - A resource

Returns:

true if resource is a property, false otherwise.

getSubClassOf

public StatementIterator getSubClassOf(Resource subClass,
                                       Resource superClass)

Description copied from interface: RdfSchemaSource

Gets all subClassOf relations with a specific sub- and/or superclass. Note that the subClassOf relation is reflexive: a class is implicitly always a subclass of itself.

Specified by:

getSubClassOf in interface RdfSchemaSource

Parameters:

subClass - The subclass of the relations that should be returned, or null if relations with any subclass should be returned.

superClass - The superclass of the relations that should be returned, or null if relations with any superclass should be returned.

Returns:

A StatementIterator containing statements of the form (someSubClass, rdfs:subClassOf, someSuperClass).

getDirectSubClassOf

public StatementIterator getDirectSubClassOf(Resource subClass,
                                             Resource superClass)

Description copied from interface: RdfSchemaSource

Gets all direct subClassOf relations with a specific sub- and/or superclass. A class A is a direct subclass of class B if there is no class C such that A is a subclass of C and C is a subclass of B.

Specified by:

getDirectSubClassOf in interface RdfSchemaSource

Parameters:

subClass - The subclass of the relations that should be returned, or null if relations with any subclass should be returned.

superClass - The superclass of the relations that should be returned, or null if relations with any superclass should be returned.

Returns:

A StatementIterator containing statements of the form (someSubClass, rdfs:subClassOf, someSuperClass).

isSubClassOf

public boolean isSubClassOf(Resource subClass,
                            Resource superClass)

Description copied from interface: RdfSchemaSource

Checks whether one resource is a subclass of another.

Specified by:

isSubClassOf in interface RdfSchemaSource

Parameters:

subClass - A class

superClass - A class

Returns:

true if subClass is a subclass of superClass, false otherwise.

isDirectSubClassOf

public boolean isDirectSubClassOf(Resource subClass,
                                  Resource superClass)

Description copied from interface: RdfSchemaSource

Checks whether one resource is a direct subclass of another.

Specified by:

isDirectSubClassOf in interface RdfSchemaSource

Parameters:

subClass - A class

superClass - A class

Returns:

true if subClass is a direct subclass of superClass, false otherwise.

getSubPropertyOf

public StatementIterator getSubPropertyOf(Resource subProperty,
                                          Resource superProperty)

Description copied from interface: RdfSchemaSource

Gets all subPropertyOf relations with a specific sub- and/or superproperty. Note that the subPropertyOf relation is reflexive: a property is implicitly always a subproperty of itself.

Specified by:

getSubPropertyOf in interface RdfSchemaSource

Parameters:

subProperty - The subproperty of the relations that should be returned, or null if relations with any subproperty should be returned.

superProperty - The superproperty of the relations that should be returned, or null if relations with any superproperty should be returned.

Returns:

A StatementIterator containing statements of the form (someSubProperty, rdfs:subPropertyOf, someSuperProperty).

getDirectSubPropertyOf

public StatementIterator getDirectSubPropertyOf(Resource subProperty,
                                                Resource superProperty)

Description copied from interface: RdfSchemaSource

Gets all direct subPropertyOf relations with a specific sub- and/or superproperty. A property A is a direct subproperty of property B if there is no property C such that A is a subproperty of C and C is a subproperty of B.

Specified by:

getDirectSubPropertyOf in interface RdfSchemaSource

Parameters:

subProperty - The subproperty of the relations that should be returned, or null if relations with any subproperty should be returned.

superProperty - The superproperty of the relations that should be returned, or null if relations with any superproperty should be returned.

Returns:

A StatementIterator containing statements of the form (someSubProperty, rdfs:subPropertyOf, someSuperProperty).

isSubPropertyOf

public boolean isSubPropertyOf(Resource subProperty,
                               Resource superProperty)

Description copied from interface: RdfSchemaSource

Checks whether one resource is a subproperty of another.

Specified by:

isSubPropertyOf in interface RdfSchemaSource

Parameters:

subProperty - A property

superProperty - A property

Returns:

true if subProperty is a subproperty of superProperty, false otherwise.

isDirectSubPropertyOf

public boolean isDirectSubPropertyOf(Resource subProperty,
                                     Resource superProperty)

Description copied from interface: RdfSchemaSource

Checks whether one resource is a direct subproperty of another.

Specified by:

isDirectSubPropertyOf in interface RdfSchemaSource

Parameters:

subProperty - A property

superProperty - A property

Returns:

true if subProperty is a direct subproperty of superProperty, false otherwise.

getDomain

public StatementIterator getDomain(Resource prop,
                                   Resource domain)

Description copied from interface: RdfSchemaSource

Gets all domain relations with a specific property and/or domain class.

Specified by:

getDomain in interface RdfSchemaSource

Parameters:

prop - The property of the relations that should be returned, or null if relations with any property should be returned.

domain - The domain of the relations that should be returned, or null if relations with any domain should be returned.

Returns:

A StatementIterator containing statements of the form (someProperty, rdfs:domain, someClass).

getRange

public StatementIterator getRange(Resource prop,
                                  Resource domain)

Description copied from interface: RdfSchemaSource

Gets all range relations with a specific property and/or range class.

Specified by:

getRange in interface RdfSchemaSource

Parameters:

prop - The property of the relations that should be returned, or null if relations with any property should be returned.

domain - The range of the relations that should be returned, or null if relations with any range should be returned.

Returns:

A StatementIterator containing statements of the form (someProperty, rdfs:range, someClass).

getType

public StatementIterator getType(Resource anInstance,
                                 Resource aClass)

Description copied from interface: RdfSchemaSource

Gets all type relations with a specific instance and/or class.

Specified by:

getType in interface RdfSchemaSource

Parameters:

anInstance - The instance of the relations that should be returned, or null if relations with any instance should be returned.

aClass - The class of the relations that should be returned, or null if relations with any class should be returned.

Returns:

A StatementIterator containing statements of the form (someInstance, rdf:type, someClass).

getDirectType

public StatementIterator getDirectType(Resource anInstance,
                                       Resource aClass)

Description copied from interface: RdfSchemaSource

Gets all direct type relations with a specific instance and/or class.

Specified by:

getDirectType in interface RdfSchemaSource

Parameters:

anInstance - The instance of the relations that should be returned, or null if relations with any instance should be returned.

aClass - The class of the relations that should be returned, or null if relations with any class should be returned.

Returns:

A StatementIterator containing statements of the form (someInstance, rdf:type, someClass).

isType

public boolean isType(Resource anInstance,
                      Resource aClass)

Description copied from interface: RdfSchemaSource

Checks whether one resource is an instance of another.

Specified by:

isType in interface RdfSchemaSource

Parameters:

anInstance - An instance

aClass - A class

Returns:

true if anInstance is a instance of aClass, false otherwise.

isDirectType

public boolean isDirectType(Resource anInstance,
                            Resource aClass)

Description copied from interface: RdfSchemaSource

Checks whether one resource is a direct instance of another.

Specified by:

isDirectType in interface RdfSchemaSource

Parameters:

anInstance - An instance

aClass - A class

Returns:

true if anInstance is a direct instance of aClass, false otherwise.

getLiterals

public LiteralIterator getLiterals(String label,
                                   String language,
                                   URI datatype)

Description copied from interface: RdfSchemaSource

Gets all literals with a specific label, language and/or datatype.

Specified by:

getLiterals in interface RdfSchemaSource

Parameters:

label - The label of the literals that should be returned, or null if literals with any label should be returned.

language - The language of the literals that should be returned, or null if literals with any language should be returned.

datatype - The datatype of the literals that should be returned, or null if literals with any datatype should be returned.

Returns:

A LiteralIterator containing literals that match the specified pattern.

getRDBMS

public RDBMS getRDBMS()