com.stardog.stark.query.io.json

Class AbstractSPARQLJSONWriter<T>

java.lang.Object

com.stardog.stark.query.io.json.AbstractSPARQLJSONWriter<T>

All Implemented Interfaces:

QueryResultWriter<T>, QueryResultHandler<T>

Direct Known Subclasses:

SPARQLJSONBooleanResultWriter, SPARQLJSONSelectResultWriter

public abstract class AbstractSPARQLJSONWriter<T>
extends Object
implements QueryResultWriter<T>

Since:

1.0

Version:

1.0

Author:

Michael Grove

Field Summary

Fields

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

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AbstractSPARQLJSONWriter(OutputStream theOutput, Options theOptions)

Method Summary

Modifier and Type	Method and Description
void	end() Signal that query processing has completed
protected void	endHeader()
QueryResultFormat	format() The format this writer will serialize output in
void	links(List<String> theLinks) Handle the set of links from the result
void	namespace(String thePrefix, String theIRI)
void	start() Indicates that writing has begun.
protected void	startHeader()
protected void	writeValue(Value value)

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.stardog.stark.query.io.QueryResultWriter

handle

Field Detail

jg

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

mOptions

protected final Options mOptions

firstTupleWritten

protected boolean firstTupleWritten

documentOpen

protected boolean documentOpen

headerOpen

protected boolean headerOpen

headerComplete

protected boolean headerComplete

tupleVariablesFound

protected boolean tupleVariablesFound

linksFound

protected boolean linksFound

Constructor Detail

AbstractSPARQLJSONWriter

protected AbstractSPARQLJSONWriter(@Nonnull
                                   OutputStream theOutput,
                                   @Nonnull
                                   Options theOptions)

Method Detail

start

public void start()

Indicates that writing has begun.

Specified by:

start in interface QueryResultWriter<T>

Specified by:

start in interface QueryResultHandler<T>

links

public void links(@Nonnull
                  List<String> theLinks)

Handle the set of links from the result

Specified by:

links in interface QueryResultWriter<T>

Specified by:

links in interface QueryResultHandler<T>

Parameters:

theLinks - The links

See Also:

"link"

namespace

public void namespace(@Nonnull
                      String thePrefix,
                      @Nonnull
                      String theIRI)
               throws ResultWritingFailed

Specified by:

namespace in interface QueryResultWriter<T>

Throws:

ResultWritingFailed

end

public void end()

Signal that query processing has completed

Specified by:

end in interface QueryResultWriter<T>

Specified by:

end in interface QueryResultHandler<T>

startHeader

protected void startHeader()

endHeader

protected void endHeader()

writeValue

protected void writeValue(@Nonnull
                          Value value)
                   throws IOException

Throws:

IOException

format

@Nonnull
public QueryResultFormat format()

The format this writer will serialize output in

Specified by:

format in interface QueryResultWriter<T>

Returns:

the format