org.openrdf.sail.memory.model
Class MemURI

java.lang.Object
  org.openrdf.sail.memory.model.MemURI

All Implemented Interfaces:

Serializable, Resource, URI, Value, MemResource, MemValue

public class MemURI
extends Object
implements URI, MemResource

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.openrdf.sail.memory.model.MemValue

EMPTY_LIST

Constructor Summary

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

Method Summary

void	addContextStatement(MemStatement st) Adds a statement to this MemResource's list of statements for which it represents the context.
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	addSubjectStatement(MemStatement st) Adds a statement to this MemResource's list of statements for which it is the subject.
void	cleanSnapshotsFromContextStatements(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 context.
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.
void	cleanSnapshotsFromSubjectStatements(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 subject.
boolean	equals(Object other) Compares a URI object to another object.
int	getContextStatementCount() Gets the number of statements for which this MemResource represents the context.
MemStatementList	getContextStatementList() Gets the list of statements for which this MemResource represents the context.
Object	getCreator() Returns the object that created this MemValue.
String	getLocalName() Gets the local name of this URI.
String	getNamespace() Gets the namespace of this URI.
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	getSubjectStatementCount() Gets the number of statements for which this MemResource is the subject.
MemStatementList	getSubjectStatementList() Gets the list of statements for which this MemResource is the subject.
int	hashCode() The hash code of a URI is defined as the hash code of its String-representation: toString().hashCode.
void	removeContextStatement(MemStatement st) Removes a statement from this MemResource's list of statements for which it represents the context.
void	removeObjectStatement(MemStatement st) Removes a statement from this MemValue's list of statements for which it is the object.
void	removePredicateStatement(MemStatement st) Removes a statement from this MemURI's list of statements for which it is the predicate.
void	removeSubjectStatement(MemStatement st) Removes a statement from this MemResource's list of statements for which it is the subject.
String	stringValue() Returns the String-value of a Value object.
String	toString() Returns the String-representation of this URI.

Methods inherited from class java.lang.Object

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

Constructor Detail

MemURI

public MemURI(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 Detail

toString

public String toString()

Description copied from interface: URI

Returns the String-representation of this URI.

Specified by:

toString in interface URI

Overrides:

toString in class Object

Returns:

The String-representation of this URI.

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 URI's URI or a BNode's ID.

Specified by:

stringValue in interface Value

getNamespace

public String getNamespace()

Description copied from interface: URI

Gets the namespace of this URI. The namespace is defined as per the algorithm described in the class documentation.

Specified by:

getNamespace in interface URI

Returns:

The URI's namespace.

getLocalName

public String getLocalName()

Description copied from interface: URI

Gets the local name of this URI. The local name is defined as per the algorithm described in the class documentation.

Specified by:

getLocalName in interface URI

Returns:

The URI's local name.

equals

public boolean equals(Object other)

Description copied from interface: URI

Compares a URI object to another object.

Specified by:

equals in interface URI

Overrides:

equals in class Object

Parameters:

other - The object to compare this URI to.

Returns:

true if the other object is an instance of URI and their String-representations are equal, false otherwise.

hashCode

public int hashCode()

Description copied from interface: URI

The hash code of a URI is defined as the hash code of its String-representation: toString().hashCode.

Specified by:

hashCode in interface URI

Overrides:

hashCode in class Object

Returns:

A hash code for the URI.

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

getSubjectStatementList

public MemStatementList getSubjectStatementList()

Description copied from interface: MemResource

Gets the list of statements for which this MemResource is the subject.

Specified by:

getSubjectStatementList in interface MemResource

Returns:

a MemStatementList containing the statements.

getSubjectStatementCount

public int getSubjectStatementCount()

Description copied from interface: MemResource

Gets the number of statements for which this MemResource is the subject.

Specified by:

getSubjectStatementCount in interface MemResource

Returns:

An integer larger than or equal to 0.

addSubjectStatement

public void addSubjectStatement(MemStatement st)

Description copied from interface: MemResource

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

Specified by:

addSubjectStatement in interface MemResource

removeSubjectStatement

public void removeSubjectStatement(MemStatement st)

Description copied from interface: MemResource

Removes a statement from this MemResource's list of statements for which it is the subject.

Specified by:

removeSubjectStatement in interface MemResource

cleanSnapshotsFromSubjectStatements

public void cleanSnapshotsFromSubjectStatements(int currentSnapshot)

Description copied from interface: MemResource

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 subject.

Specified by:

cleanSnapshotsFromSubjectStatements in interface MemResource

Parameters:

currentSnapshot - The current snapshot version.

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)

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

removePredicateStatement

public void removePredicateStatement(MemStatement st)

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

cleanSnapshotsFromPredicateStatements

public 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.

Parameters:

currentSnapshot - The current snapshot version.

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)

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

removeObjectStatement

public void removeObjectStatement(MemStatement st)

Description copied from interface: MemValue

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

Specified by:

removeObjectStatement in interface MemValue

cleanSnapshotsFromObjectStatements

public void cleanSnapshotsFromObjectStatements(int currentSnapshot)

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.

getContextStatementList

public MemStatementList getContextStatementList()

Description copied from interface: MemResource

Gets the list of statements for which this MemResource represents the context.

Specified by:

getContextStatementList in interface MemResource

Returns:

a MemStatementList containing the statements.

getContextStatementCount

public int getContextStatementCount()

Description copied from interface: MemResource

Gets the number of statements for which this MemResource represents the context.

Specified by:

getContextStatementCount in interface MemResource

Returns:

An integer larger than or equal to 0.

addContextStatement

public void addContextStatement(MemStatement st)

Description copied from interface: MemResource

Adds a statement to this MemResource's list of statements for which it represents the context.

Specified by:

addContextStatement in interface MemResource

removeContextStatement

public void removeContextStatement(MemStatement st)

Description copied from interface: MemResource

Removes a statement from this MemResource's list of statements for which it represents the context.

Specified by:

removeContextStatement in interface MemResource

cleanSnapshotsFromContextStatements

public void cleanSnapshotsFromContextStatements(int currentSnapshot)

Description copied from interface: MemResource

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 context.

Specified by:

cleanSnapshotsFromContextStatements in interface MemResource

Parameters:

currentSnapshot - The current snapshot version.