org.eclipse.rdf4j.sail.nativerdf

Class ValueStore

java.lang.Object

org.eclipse.rdf4j.model.impl.AbstractValueFactory

org.eclipse.rdf4j.sail.nativerdf.ValueStore

All Implemented Interfaces:

ValueFactory

Deprecated.

since 3.0. This feature is for internal use only: its existence, signature or behavior may change without warning from one release to the next.

@InternalUseOnly
 @Deprecated
public class ValueStore
extends AbstractValueFactory

File-based indexed storage and retrieval of RDF values. ValueStore maps RDF values to integer IDs and vice-versa.

Author:

Arjohn Kampman

Field Summary

Fields

Modifier and Type	Field and Description
static int	NAMESPACE_CACHE_SIZE Deprecated. The default namespace cache size.
static int	NAMESPACE_ID_CACHE_SIZE Deprecated. The default namespace id cache size.
static int	VALUE_CACHE_SIZE Deprecated. The default value cache size.
static int	VALUE_ID_CACHE_SIZE Deprecated. The default value id cache size.

Constructor Summary

Constructors

Constructor and Description
ValueStore(File dataDir) Deprecated.
ValueStore(File dataDir, boolean forceSync) Deprecated.
ValueStore(File dataDir, boolean forceSync, int valueCacheSize, int valueIDCacheSize, int namespaceCacheSize, int namespaceIDCacheSize) Deprecated.

Method Summary

Modifier and Type	Method and Description
void	checkConsistency() Deprecated. Checks that every value has exactly one ID.
void	clear() Deprecated. Removes all values from the ValueStore.
void	close() Deprecated. Closes the ValueStore, releasing any file references, etc.
NativeBNode	createBNode(String nodeID) Deprecated. Creates a new blank node with the given node identifier.
NativeIRI	createIRI(String uri) Deprecated. Creates a new IRI from the supplied string-representation.
NativeIRI	createIRI(String namespace, String localName) Deprecated. Creates a new IRI from the supplied namespace and local name.
NativeLiteral	createLiteral(String value) Deprecated. Creates a new literal with the supplied label.
NativeLiteral	createLiteral(String value, IRI datatype) Deprecated. Creates a new literal with the supplied label and datatype.
NativeLiteral	createLiteral(String value, String language) Deprecated. Creates a new literal with the supplied label and language attribute.
int	getID(Value value) Deprecated. Gets the ID for the specified value.
NativeBNode	getNativeBNode(BNode bnode) Deprecated. Creates a NativeBNode that is equal to the supplied bnode.
NativeLiteral	getNativeLiteral(Literal l) Deprecated. Creates an NativeLiteral that is equal to the supplied literal.
NativeResource	getNativeResource(Resource resource) Deprecated.
NativeIRI	getNativeURI(IRI uri) Deprecated. Creates a NativeURI that is equal to the supplied URI.
NativeValue	getNativeValue(Value value) Deprecated.
Lock	getReadLock() Deprecated. Gets a read lock on this value store that can be used to prevent values from being removed while the lock is active.
ValueStoreRevision	getRevision() Deprecated.
NativeValue	getValue(int id) Deprecated. Gets the value for the specified ID.
static void	main(String[] args) Deprecated.
int	storeValue(Value value) Deprecated. Stores the supplied value and returns the ID that has been assigned to it.
void	sync() Deprecated. Synchronizes any changes that are cached in memory to disk.

Methods inherited from class org.eclipse.rdf4j.model.impl.AbstractValueFactory

createBNode, createFPLiteral, createIntegerLiteral, createLiteral, createLiteral, createLiteral, createLiteral, createLiteral, createLiteral, createLiteral, createLiteral, createLiteral, createLiteral, createLiteral, createNumericLiteral, createStatement, createStatement, initBNodeParams

Methods inherited from class java.lang.Object

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

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

createLiteral, createStatement, createStatement, createURI, createURI

Field Detail

VALUE_CACHE_SIZE

public static final int VALUE_CACHE_SIZE

Deprecated.

The default value cache size.

See Also:

Constant Field Values

VALUE_ID_CACHE_SIZE

public static final int VALUE_ID_CACHE_SIZE

Deprecated.

The default value id cache size.

See Also:

Constant Field Values

NAMESPACE_CACHE_SIZE

public static final int NAMESPACE_CACHE_SIZE

Deprecated.

The default namespace cache size.

See Also:

Constant Field Values

NAMESPACE_ID_CACHE_SIZE

public static final int NAMESPACE_ID_CACHE_SIZE

Deprecated.

The default namespace id cache size.

See Also:

Constant Field Values

Constructor Detail

ValueStore

public ValueStore(File dataDir)
           throws IOException

Deprecated.

Throws:

IOException

ValueStore

public ValueStore(File dataDir,
                  boolean forceSync)
           throws IOException

Deprecated.

Throws:

IOException

ValueStore

public ValueStore(File dataDir,
                  boolean forceSync,
                  int valueCacheSize,
                  int valueIDCacheSize,
                  int namespaceCacheSize,
                  int namespaceIDCacheSize)
           throws IOException

Deprecated.

Throws:

IOException

Method Detail

getRevision

public ValueStoreRevision getRevision()

Deprecated.

getReadLock

public Lock getReadLock()
                 throws InterruptedException

Deprecated.

Gets a read lock on this value store that can be used to prevent values from being removed while the lock is active.

Throws:

InterruptedException

getValue

public NativeValue getValue(int id)
                     throws IOException

Deprecated.

Gets the value for the specified ID.

Parameters:

id - A value ID.

Returns:

The value for the ID, or null no such value could be found.

Throws:

IOException - If an I/O error occurred.

getID

public int getID(Value value)
          throws IOException

Deprecated.

Gets the ID for the specified value.

Parameters:

value - A value.

Returns:

The ID for the specified value, or NativeValue.UNKNOWN_ID if no such ID could be found.

Throws:

IOException - If an I/O error occurred.

storeValue

public int storeValue(Value value)
               throws IOException

Deprecated.

Stores the supplied value and returns the ID that has been assigned to it. In case the value was already present, the value will not be stored again and the ID of the existing value is returned.

Parameters:

value - The Value to store.

Returns:

The ID that has been assigned to the value.

Throws:

IOException - If an I/O error occurred.

clear

public void clear()
           throws IOException

Deprecated.

Removes all values from the ValueStore.

Throws:

IOException - If an I/O error occurred.

sync

public void sync()
          throws IOException

Deprecated.

Synchronizes any changes that are cached in memory to disk.

Throws:

IOException - If an I/O error occurred.

close

public void close()
           throws IOException

Deprecated.

Closes the ValueStore, releasing any file references, etc. Once closed, the ValueStore can no longer be used.

Throws:

IOException - If an I/O error occurred.

checkConsistency

public void checkConsistency()
                      throws SailException,
                             IOException

Deprecated.

Checks that every value has exactly one ID.

Throws:

IOException

SailException

createIRI

public NativeIRI createIRI(String uri)

Deprecated.

Description copied from interface: ValueFactory

Creates a new IRI from the supplied string-representation.

Specified by:

createIRI in interface ValueFactory

Overrides:

createIRI in class AbstractValueFactory

Parameters:

uri - A string-representation of a IRI.

Returns:

An object representing the IRI.

createIRI

public NativeIRI createIRI(String namespace,
                           String localName)

Deprecated.

Description copied from interface: ValueFactory

Creates a new IRI from the supplied namespace and local name. Calling this method is funtionally equivalent to calling createIRI(namespace+localName), but allows the ValueFactory to reuse supplied namespace and local name strings whenever possible. Note that the values returned by IRI.getNamespace() and IRI.getLocalName() are not necessarily the same as the values that are supplied to this method.

Specified by:

createIRI in interface ValueFactory

Overrides:

createIRI in class AbstractValueFactory

Parameters:

namespace - The IRI's namespace.

localName - The IRI's local name.

createBNode

public NativeBNode createBNode(String nodeID)

Deprecated.

Description copied from interface: ValueFactory

Creates a new blank node with the given node identifier.

Specified by:

createBNode in interface ValueFactory

Overrides:

createBNode in class AbstractValueFactory

Parameters:

nodeID - The blank node identifier.

Returns:

An object representing the blank node.

createLiteral

public NativeLiteral createLiteral(String value)

Deprecated.

Description copied from interface: ValueFactory

Creates a new literal with the supplied label. The return value of Literal.getDatatype() for the returned object must be XMLSchema.STRING.

Specified by:

createLiteral in interface ValueFactory

Overrides:

createLiteral in class AbstractValueFactory

Parameters:

value - The literal's label, must not be null.

createLiteral

public NativeLiteral createLiteral(String value,
                                   String language)

Deprecated.

Description copied from interface: ValueFactory

Creates a new literal with the supplied label and language attribute. The return value of Literal.getDatatype() for the returned object must be RDF.LANGSTRING.

Specified by:

createLiteral in interface ValueFactory

Overrides:

createLiteral in class AbstractValueFactory

Parameters:

value - The literal's label, must not be null.

language - The literal's language attribute, must not be null.

createLiteral

public NativeLiteral createLiteral(String value,
                                   IRI datatype)

Deprecated.

Description copied from interface: ValueFactory

Creates a new literal with the supplied label and datatype.

Specified by:

createLiteral in interface ValueFactory

Overrides:

createLiteral in class AbstractValueFactory

Parameters:

value - The literal's label, must not be null.

datatype - The literal's datatype. If it is null, the datatype XMLSchema.STRING will be assigned to this literal.

getNativeValue

public NativeValue getNativeValue(Value value)

Deprecated.

getNativeResource

public NativeResource getNativeResource(Resource resource)

Deprecated.

getNativeURI

public NativeIRI getNativeURI(IRI uri)

Deprecated.

Creates a NativeURI that is equal to the supplied URI. This method returns the supplied URI itself if it is already a NativeURI that has been created by this ValueStore, which prevents unnecessary object creations.

Returns:

A NativeURI for the specified URI.

getNativeBNode

public NativeBNode getNativeBNode(BNode bnode)

Deprecated.

Creates a NativeBNode that is equal to the supplied bnode. This method returns the supplied bnode itself if it is already a NativeBNode that has been created by this ValueStore, which prevents unnecessary object creations.

Returns:

A NativeBNode for the specified bnode.

getNativeLiteral

public NativeLiteral getNativeLiteral(Literal l)

Deprecated.

Creates an NativeLiteral that is equal to the supplied literal. This method returns the supplied literal itself if it is already a NativeLiteral that has been created by this ValueStore, which prevents unnecessary object creations.

Returns:

A NativeLiteral for the specified literal.

main

public static void main(String[] args)
                 throws Exception

Deprecated.

Throws:

Exception