Package org.wikidata.wdtk.rdf

Class RdfSerializer

java.lang.Object

org.wikidata.wdtk.rdf.RdfSerializer

All Implemented Interfaces:

EntityDocumentDumpProcessor, EntityDocumentProcessor

public class RdfSerializer
extends Object
implements EntityDocumentDumpProcessor

This class implements EntityDocumentDumpProcessor to provide a RDF serializer to render RDF graphs of EntityDocument objects.

Author:

Michael Günther

Field Summary

Fields

Modifier and Type	Field	Description
static final int	TASK_ALIASES
static final int	TASK_ALL_ENTITIES
static final int	TASK_ALL_EXACT_DATA
static final int	TASK_DATATYPES
static final int	TASK_DESCRIPTIONS
static final int	TASK_ITEMS
static final int	TASK_LABELS
static final int	TASK_PROPERTIES
static final int	TASK_PROPERTY_LINKS
static final int	TASK_SIMPLE_STATEMENTS
static final int	TASK_SITELINKS
static final int	TASK_STATEMENTS
static final int	TASK_TERMS

Constructor Summary

Constructors

Constructor	Description
RdfSerializer(org.eclipse.rdf4j.rio.RDFFormat format, OutputStream output, Sites sites, PropertyRegister propertyRegister)	Creates a new RDF serializer for the specified format and output stream.

Method Summary

Modifier and Type	Method	Description
void	close()	Finishes the processing by performing any final steps, such as closing resources.
int	getTasks()	Returns the tasks that should be performed during export.
long	getTripleCount()	Returns the number of triples that have been written so far.
void	open()	Starts the processing by performing any initial steps to prepare processing.
void	processItemDocument(ItemDocument itemDocument)	Processes the given ItemDocument.
void	processPropertyDocument(PropertyDocument propertyDocument)	Processes the given PropertyDocument.
void	setTasks(int tasks)	Sets the tasks that should be performed during export.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.wikidata.wdtk.datamodel.interfaces.EntityDocumentProcessor

processEntityRedirectDocument, processLexemeDocument, processMediaInfoDocument

Field Details

TASK_STATEMENTS

public static final int TASK_STATEMENTS

See Also:

• Constant Field Values

TASK_SITELINKS

public static final int TASK_SITELINKS

See Also:

• Constant Field Values

TASK_DATATYPES

public static final int TASK_DATATYPES

See Also:

• Constant Field Values

TASK_PROPERTY_LINKS

public static final int TASK_PROPERTY_LINKS

See Also:

• Constant Field Values

TASK_LABELS

public static final int TASK_LABELS

See Also:

• Constant Field Values

TASK_DESCRIPTIONS

public static final int TASK_DESCRIPTIONS

See Also:

• Constant Field Values

TASK_ALIASES

public static final int TASK_ALIASES

See Also:

• Constant Field Values

TASK_TERMS

public static final int TASK_TERMS

See Also:

• Constant Field Values

TASK_ALL_EXACT_DATA

public static final int TASK_ALL_EXACT_DATA

See Also:

• Constant Field Values

TASK_SIMPLE_STATEMENTS

public static final int TASK_SIMPLE_STATEMENTS

See Also:

• Constant Field Values

TASK_ITEMS

public static final int TASK_ITEMS

See Also:

• Constant Field Values

TASK_PROPERTIES

public static final int TASK_PROPERTIES

See Also:

• Constant Field Values

TASK_ALL_ENTITIES

public static final int TASK_ALL_ENTITIES

See Also:

• Constant Field Values

Constructor Details

RdfSerializer

public RdfSerializer(org.eclipse.rdf4j.rio.RDFFormat format,
 OutputStream output,
 Sites sites,
 PropertyRegister propertyRegister)

Creates a new RDF serializer for the specified format and output stream.

Parameters:

format - RDF format, such as RDFFormat.TURTLE

output - the output stream to write to

sites - information about site links

Method Details

setTasks

public void setTasks(int tasks)

Sets the tasks that should be performed during export. The value should be a combination of flags such as TASK_STATEMENTS.

Parameters:

tasks - the tasks to be performed

getTasks

public int getTasks()

Returns the tasks that should be performed during export. The value should be a combination of flags such as TASK_STATEMENTS.

Returns:

tasks to be performed

getTripleCount

public long getTripleCount()

Returns the number of triples that have been written so far.

Returns:

number of triples

open

public void open()

Description copied from interface: EntityDocumentDumpProcessor

Starts the processing by performing any initial steps to prepare processing.

Specified by:

open in interface EntityDocumentDumpProcessor

processItemDocument

public void processItemDocument(ItemDocument itemDocument)

Description copied from interface: EntityDocumentProcessor

Processes the given ItemDocument.

Specified by:

processItemDocument in interface EntityDocumentProcessor

Parameters:

itemDocument - the ItemDocument

processPropertyDocument

public void processPropertyDocument(PropertyDocument propertyDocument)

Description copied from interface: EntityDocumentProcessor

Processes the given PropertyDocument.

Specified by:

processPropertyDocument in interface EntityDocumentProcessor

Parameters:

propertyDocument - the PropertyDocument

close

public void close()

Description copied from interface: EntityDocumentDumpProcessor

Finishes the processing by performing any final steps, such as closing resources.

Specified by:

close in interface EntityDocumentDumpProcessor