Package com.complexible.common.rdf.query.resultio

Class AbstractDataExporterQueryResultWriter

java.lang.Object

com.complexible.common.rdf.query.resultio.AbstractDataExporterQueryResultWriter

All Implemented Interfaces:

QueryResultWriter<BindingSet>, SelectQueryResultWriter, QueryResultHandler<BindingSet>, SelectQueryResultHandler

Direct Known Subclasses:

HTMLQueryResultWriter, TextTableQueryResultWriter

public abstract class AbstractDataExporterQueryResultWriter
extends Object
implements SelectQueryResultWriter

Since:

1.2

Version:

6.0

Author:

Evren Sirin, Michael Grove

Field Summary

Fields

Modifier and Type	Field	Description
protected int	mColCount
protected RDFValueColumn[]	mColumns
protected TextTabularOutput	mExporter
protected final PrintStream	mOut
protected Object[]	mResult

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	AbstractDataExporterQueryResultWriter(OutputStream theOut, Options theOptions, QueryResultFormat theFormat)

Method Summary

Modifier and Type	Method	Description
void	addNamespaces(Iterable<Namespace> theNamespaces)
protected abstract com.brsanthu.dataexporter.DataExporter	createExporter()	Creates the exporter and sets its options
void	end()	Signal that query processing has completed
QueryResultFormat	format()	The format this writer will serialize output in
void	handle(BindingSet theBinding)	Handle a result to a query
void	links(List<String> theList)	Handle the set of links from the result
void	namespace(String thePrefix, String theIRI)
void	start()	Indicates that writing has begun.
void	variables(List<String> theSelectVars)	The variables in the projection of the query

Methods inherited from class java.lang.Object

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

Field Details

mOut

protected final PrintStream mOut

mExporter

protected TextTabularOutput mExporter

mColCount

protected int mColCount

mColumns

protected RDFValueColumn[] mColumns

mResult

protected Object[] mResult

Constructor Details

AbstractDataExporterQueryResultWriter

protected AbstractDataExporterQueryResultWriter(OutputStream theOut,
 Options theOptions,
 QueryResultFormat theFormat)

Method Details

format

@Nonnull
public QueryResultFormat format()

The format this writer will serialize output in

Specified by:

format in interface QueryResultWriter<BindingSet>

Returns:

the format

links

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

Handle the set of links from the result

Specified by:

links in interface QueryResultHandler<BindingSet>

Specified by:

links in interface QueryResultWriter<BindingSet>

Parameters:

theList - The links

See Also:

• "link"

namespace

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

Specified by:

namespace in interface QueryResultWriter<BindingSet>

Throws:

ResultWritingFailed

addNamespaces

public void addNamespaces(Iterable<Namespace> theNamespaces)

start

public void start()

Indicates that writing has begun.

Specified by:

start in interface QueryResultHandler<BindingSet>

Specified by:

start in interface QueryResultWriter<BindingSet>

variables

public void variables(@Nonnull
 List<String> theSelectVars)

The variables in the projection of the query

Specified by:

variables in interface SelectQueryResultHandler

Parameters:

theSelectVars - the variables

See Also:

• SelectQueryResult.variables()

handle

public void handle(@Nonnull
 BindingSet theBinding)

Handle a result to a query

Specified by:

handle in interface QueryResultHandler<BindingSet>

Specified by:

handle in interface QueryResultWriter<BindingSet>

Parameters:

theBinding - the result

end

public void end()

Signal that query processing has completed

Specified by:

end in interface QueryResultHandler<BindingSet>

Specified by:

end in interface QueryResultWriter<BindingSet>

createExporter

protected abstract com.brsanthu.dataexporter.DataExporter createExporter()

Creates the exporter and sets its options

Returns:

a DataExporter object