Package org.eclipse.rdf4j.sail.memory.model

Class MemIRI

java.lang.Object

org.eclipse.rdf4j.sail.memory.model.MemResource

org.eclipse.rdf4j.sail.memory.model.MemIRI

All Implemented Interfaces:

Serializable, IRI, Resource, Value, MemValue

public class MemIRI
extends MemResource
implements IRI

A MemoryStore-specific implementation of URI that stores separated namespace and local name information to enable reuse of namespace String objects (reducing memory usage) and that gives it node properties.

See Also:

• Serialized Form

Field Summary

Fields inherited from interface org.eclipse.rdf4j.sail.memory.model.MemValue

EMPTY_LIST

Constructor Summary

Constructors

Constructor	Description
MemIRI(Object creator, String namespace, String localName)	Creates a new MemURI for a URI.

Method Summary

Modifier and Type	Method	Description
void	addObjectStatement(MemStatement st)	Adds a statement to this MemValue's list of statements for which it is the object.
void	addPredicateStatement(MemStatement st)	Adds a statement to this MemURI's list of statements for which it is the predicate.
void	cleanSnapshotsFromObjectStatements(int currentSnapshot)	Removes statements from old snapshots (those that have expired at or before the specified snapshot version) from this MemValue's list of statements for which it is the object.
void	cleanSnapshotsFromPredicateStatements(int currentSnapshot)	Removes statements from old snapshots (those that have expired at or before the specified snapshot version) from this MemValue's list of statements for which it is the predicate.
boolean	equals(Object o)	Compares this IRI to another object.
Object	getCreator()	Returns the object that created this MemValue.
String	getLocalName()	Gets the local name part of this IRI.
String	getNamespace()	Gets the namespace part of this IRI.
int	getObjectStatementCount()	Gets the number of statements for which this MemValue is the object.
MemStatementList	getObjectStatementList()	Gets the list of statements for which this MemValue is the object.
int	getPredicateStatementCount()	Gets the number of Statements for which this MemURI is the predicate.
MemStatementList	getPredicateStatementList()	Gets the list of statements for which this MemURI is the predicate.
int	hashCode()	Computes the hash code of this IRI.
boolean	hasObjectStatements()
boolean	hasPredicateStatements()
boolean	hasStatements()	Checks whether this MemValue has any statements.
String	stringValue()	Returns the String-value of a Value object.
String	toString()

Methods inherited from class org.eclipse.rdf4j.sail.memory.model.MemResource

addContextStatement, addSubjectStatement, cleanSnapshotsFromContextStatements, cleanSnapshotsFromSubjectStatements, getContextStatementCount, getContextStatementList, getSubjectStatementCount, getSubjectStatementList, hasContextStatements, hasSubjectStatements

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.eclipse.rdf4j.model.IRI

isIRI

Methods inherited from interface org.eclipse.rdf4j.model.Resource

isResource

Methods inherited from interface org.eclipse.rdf4j.model.Value

isBNode, isLiteral, isTriple

Constructor Details

MemIRI

public MemIRI(Object creator,
 String namespace,
 String localName)

Creates a new MemURI for a URI.

Parameters:

creator - The object that is creating this MemURI.

namespace - namespace part of URI.

localName - localname part of URI.

Method Details

toString

public String toString()

Overrides:

toString in class Object

stringValue

public String stringValue()

Description copied from interface: Value

Returns the String-value of a Value object. This returns either a Literal's label, a IRI's URI or a BNode's ID.

Specified by:

stringValue in interface Value

getNamespace

public String getNamespace()

Description copied from interface: IRI

Gets the namespace part of this IRI.

The namespace is defined as per the algorithm described in the class documentation.

Specified by:

getNamespace in interface IRI

Returns:

the namespace of this IRI

getLocalName

public String getLocalName()

Description copied from interface: IRI

Gets the local name part of this IRI.

The local name is defined as per the algorithm described in the class documentation.

Specified by:

getLocalName in interface IRI

Returns:

the local name of this IRI

equals

public boolean equals(Object o)

Description copied from interface: IRI

Compares this IRI to another object.

Specified by:

equals in interface IRI

Overrides:

equals in class Object

Parameters:

o - the object to compare this IRI to

Returns:

true, if the other object is an instance of IRI and their string values are equal; false, otherwise

hashCode

public int hashCode()

Description copied from interface: IRI

Computes the hash code of this IRI.

Specified by:

hashCode in interface IRI

Overrides:

hashCode in class Object

Returns:

a hash code for this IRI computed as Value.stringValue().hashCode()

getCreator

public Object getCreator()

Description copied from interface: MemValue

Returns the object that created this MemValue. MemValues are only unique within a single repository, but an application could use several repositories at the same time, passing MemValues generated by one Sail to another Sail. In such situations, the MemValue of the first Sail cannot be used by the second Sail.

Specified by:

getCreator in interface MemValue

hasStatements

public boolean hasStatements()

Description copied from interface: MemValue

Checks whether this MemValue has any statements. A MemValue object has statements if there is at least one statement where it is used as the subject, predicate, object or context value.

Specified by:

hasStatements in interface MemValue

Returns:

true if the MemValue has statements, false otherwise.

getPredicateStatementList

public MemStatementList getPredicateStatementList()

Gets the list of statements for which this MemURI is the predicate.

Returns:

a MemStatementList containing the statements.

getPredicateStatementCount

public int getPredicateStatementCount()

Gets the number of Statements for which this MemURI is the predicate.

Returns:

An integer larger than or equal to 0.

addPredicateStatement

public void addPredicateStatement(MemStatement st)
                           throws InterruptedException

Adds a statement to this MemURI's list of statements for which it is the predicate.

Throws:

InterruptedException

cleanSnapshotsFromPredicateStatements

public void cleanSnapshotsFromPredicateStatements(int currentSnapshot)
                                           throws InterruptedException

Removes statements from old snapshots (those that have expired at or before the specified snapshot version) from this MemValue's list of statements for which it is the predicate.

Parameters:

currentSnapshot - The current snapshot version.

Throws:

InterruptedException

getObjectStatementList

public MemStatementList getObjectStatementList()

Description copied from interface: MemValue

Gets the list of statements for which this MemValue is the object.

Specified by:

getObjectStatementList in interface MemValue

Returns:

A MemStatementList containing the statements.

getObjectStatementCount

public int getObjectStatementCount()

Description copied from interface: MemValue

Gets the number of statements for which this MemValue is the object.

Specified by:

getObjectStatementCount in interface MemValue

Returns:

An integer larger than or equal to 0.

addObjectStatement

public void addObjectStatement(MemStatement st)
                        throws InterruptedException

Description copied from interface: MemValue

Adds a statement to this MemValue's list of statements for which it is the object.

Specified by:

addObjectStatement in interface MemValue

Throws:

InterruptedException

cleanSnapshotsFromObjectStatements

public void cleanSnapshotsFromObjectStatements(int currentSnapshot)
                                        throws InterruptedException

Description copied from interface: MemValue

Removes statements from old snapshots (those that have expired at or before the specified snapshot version) from this MemValue's list of statements for which it is the object.

Specified by:

cleanSnapshotsFromObjectStatements in interface MemValue

Parameters:

currentSnapshot - The current snapshot version.

Throws:

InterruptedException

hasPredicateStatements

public boolean hasPredicateStatements()

Specified by:

hasPredicateStatements in interface MemValue

hasObjectStatements

public boolean hasObjectStatements()

Specified by:

hasObjectStatements in interface MemValue