Package org.eclipse.rdf4j.query.resultio.sparqljson

Class SPARQLStarResultsJSONWriter

java.lang.Object

org.eclipse.rdf4j.query.resultio.AbstractQueryResultWriter

org.eclipse.rdf4j.query.resultio.sparqljson.SPARQLResultsJSONWriter

org.eclipse.rdf4j.query.resultio.sparqljson.SPARQLStarResultsJSONWriter

All Implemented Interfaces:

org.eclipse.rdf4j.common.io.CharSink, org.eclipse.rdf4j.common.io.Sink, QueryResultHandler, QueryResultWriter, TupleQueryResultWriter, TupleQueryResultHandler

Direct Known Subclasses:

SPARQLStarResultsJSONWriter

public class SPARQLStarResultsJSONWriter
extends SPARQLResultsJSONWriter

Writer for SPARQL-star JSON results. This is equivalent to the SPARQL JSON writer with the addition of support for RDF-star triples. See SPARQLStarResultsJSONConstants for a description of the RDF-star extension.

Author:

Pavel Mihaylov

Field Summary

Fields

Modifier and Type	Field	Description
protected boolean	documentOpen
protected boolean	firstTupleWritten
protected boolean	headerComplete
protected boolean	headerOpen
protected com.fasterxml.jackson.core.JsonGenerator	jg
protected boolean	linksFound
protected boolean	tupleVariablesFound

Constructor Summary

Constructors

Constructor	Description
SPARQLStarResultsJSONWriter(OutputStream out)

Method Summary

Modifier and Type	Method	Description
boolean	acceptsFileFormat(org.eclipse.rdf4j.common.lang.FileFormat format)
protected void	endDocument()
void	endHeader()
void	endQueryResult()
TupleQueryResultFormat	getQueryResultFormat()
Collection<org.eclipse.rdf4j.rio.RioSetting<?>>	getSupportedSettings()
TupleQueryResultFormat	getTupleQueryResultFormat()
Writer	getWriter()
void	handleBoolean(boolean value)
void	handleLinks(List<String> linkUrls)
void	handleNamespace(String prefix, String uri)
protected void	handleSolutionImpl(BindingSet bindingSet)
void	handleStylesheet(String stylesheetUrl)
void	startDocument()
void	startHeader()
void	startQueryResult(List<String> columnHeaders)

Methods inherited from class org.eclipse.rdf4j.query.resultio.sparqljson.SPARQLResultsJSONWriter

writeValue

Methods inherited from class org.eclipse.rdf4j.query.resultio.AbstractQueryResultWriter

getFileFormat, getWriterConfig, handleSolution, setWriterConfig, xsdStringToPlainLiteral

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.query.QueryResultHandler

endQueryResult, handleBoolean, handleLinks, handleSolution, startQueryResult

Methods inherited from interface org.eclipse.rdf4j.query.resultio.QueryResultWriter

endHeader, getSupportedSettings, getWriterConfig, handleNamespace, handleStylesheet, setWriterConfig, startDocument, startHeader

Methods inherited from interface org.eclipse.rdf4j.common.io.Sink

getFileFormat

Field Detail

firstTupleWritten

protected boolean firstTupleWritten

documentOpen

protected boolean documentOpen

headerOpen

protected boolean headerOpen

headerComplete

protected boolean headerComplete

tupleVariablesFound

protected boolean tupleVariablesFound

linksFound

protected boolean linksFound

jg

protected final com.fasterxml.jackson.core.JsonGenerator jg

Constructor Detail

SPARQLStarResultsJSONWriter

public SPARQLStarResultsJSONWriter(OutputStream out)

Method Detail

getTupleQueryResultFormat

public TupleQueryResultFormat getTupleQueryResultFormat()

Specified by:

getTupleQueryResultFormat in interface TupleQueryResultWriter

Overrides:

getTupleQueryResultFormat in class SPARQLResultsJSONWriter

getQueryResultFormat

public TupleQueryResultFormat getQueryResultFormat()

Specified by:

getQueryResultFormat in interface QueryResultWriter

Overrides:

getQueryResultFormat in class SPARQLResultsJSONWriter

acceptsFileFormat

public boolean acceptsFileFormat(org.eclipse.rdf4j.common.lang.FileFormat format)

getWriter

public final Writer getWriter()

Specified by:

getWriter in interface org.eclipse.rdf4j.common.io.CharSink

endHeader

public void endHeader()
               throws QueryResultHandlerException

Specified by:

endHeader in interface QueryResultWriter

Throws:

QueryResultHandlerException

startQueryResult

public void startQueryResult(List<String> columnHeaders)
                      throws TupleQueryResultHandlerException

Specified by:

startQueryResult in interface QueryResultHandler

Overrides:

startQueryResult in class AbstractQueryResultWriter

Throws:

TupleQueryResultHandlerException

handleSolutionImpl

protected void handleSolutionImpl(BindingSet bindingSet)
                           throws TupleQueryResultHandlerException

Overrides:

handleSolutionImpl in class AbstractQueryResultWriter

Throws:

TupleQueryResultHandlerException

endQueryResult

public void endQueryResult()
                    throws TupleQueryResultHandlerException

Specified by:

endQueryResult in interface QueryResultHandler

Throws:

TupleQueryResultHandlerException

startDocument

public void startDocument()
                   throws QueryResultHandlerException

Specified by:

startDocument in interface QueryResultWriter

Throws:

QueryResultHandlerException

handleStylesheet

public void handleStylesheet(String stylesheetUrl)
                      throws QueryResultHandlerException

Specified by:

handleStylesheet in interface QueryResultWriter

Throws:

QueryResultHandlerException

startHeader

public void startHeader()
                 throws QueryResultHandlerException

Specified by:

startHeader in interface QueryResultWriter

Throws:

QueryResultHandlerException

handleLinks

public void handleLinks(List<String> linkUrls)
                 throws QueryResultHandlerException

Specified by:

handleLinks in interface QueryResultHandler

Throws:

QueryResultHandlerException

handleBoolean

public void handleBoolean(boolean value)
                   throws QueryResultHandlerException

Specified by:

handleBoolean in interface QueryResultHandler

Throws:

QueryResultHandlerException

getSupportedSettings

public final Collection<org.eclipse.rdf4j.rio.RioSetting<?>> getSupportedSettings()

Specified by:

getSupportedSettings in interface QueryResultWriter

Overrides:

getSupportedSettings in class AbstractQueryResultWriter

handleNamespace

public void handleNamespace(String prefix,
                            String uri)
                     throws QueryResultHandlerException

Specified by:

handleNamespace in interface QueryResultWriter

Throws:

QueryResultHandlerException

endDocument

protected void endDocument()
                    throws IOException

Throws:

IOException