com.bigdata.rdf.internal.impl.extensions

Class CompressedTimestampExtension<V extends BigdataValue>

java.lang.Object

com.bigdata.rdf.internal.impl.extensions.CompressedTimestampExtension<V>

All Implemented Interfaces:

IExtension<V>

public class CompressedTimestampExtension<V extends BigdataValue>
extends Object
implements IExtension<V>

Effective, packed representation of timestamps typed as . Builds on the PackedLongIV datatype for representing timestamps, thus supporting the range [0;72057594037927935L]. The datatype is recommended for use with timestamps specified in seconds and milliseconds; you should not run into any range issues there at all. Using the datatype for timestamps in microseconds or smaller is discouraged: in the microseconds case the value 72057594037927935 corresponds to Fri, 04 May 2198 23:50:03 GMT, so you couldn't represent dates beyond that time.

Field Summary

Fields

Modifier and Type	Field and Description
static org.openrdf.model.URI	COMPRESSED_TIMESTAMP

Constructor Summary

Constructors

Constructor and Description
CompressedTimestampExtension(IDatatypeURIResolver resolver)

Method Summary

Methods

Modifier and Type	Method and Description
V	asValue(LiteralExtensionIV iv, BigdataValueFactory vf) Create an RDF value from an LiteralExtensionIV.
LiteralExtensionIV	createIV(org.openrdf.model.Value value) Convert the supplied value into an internal representation as PackedLongIV.
Set<BigdataURI>	getDatatypes() Return the fully resolved datatype(s) handled by this interface in the form of a BigdataURI with the TermId already set.

Methods inherited from class java.lang.Object

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

Field Detail

COMPRESSED_TIMESTAMP

public static final org.openrdf.model.URI COMPRESSED_TIMESTAMP

Constructor Detail

CompressedTimestampExtension

public CompressedTimestampExtension(IDatatypeURIResolver resolver)

Method Detail

getDatatypes

public Set<BigdataURI> getDatatypes()

Description copied from interface: IExtension

Return the fully resolved datatype(s) handled by this interface in the form of a BigdataURI with the TermId already set.

Specified by:

getDatatypes in interface IExtension<V extends BigdataValue>

Returns:

the datatype

createIV

public LiteralExtensionIV createIV(org.openrdf.model.Value value)

Convert the supplied value into an internal representation as PackedLongIV.

Specified by:

createIV in interface IExtension<V extends BigdataValue>

Parameters:

value - The RDF Value

Returns:

The extension IV -or- null if the Value can not be inlined using this IExtension.

asValue

public V asValue(LiteralExtensionIV iv,
        BigdataValueFactory vf)

Description copied from interface: IExtension

Create an RDF value from an LiteralExtensionIV.

Specified by:

asValue in interface IExtension<V extends BigdataValue>

Parameters:

iv - The extension IV

vf - The bigdata value factory

Returns:

The RDF Value