org.openrdf.sesame.query
Class StdOutGraphQueryResultWriter

java.lang.Object
  org.openrdf.sesame.query.StdOutGraphQueryResultWriter

All Implemented Interfaces:

GraphQueryResultListener

public class StdOutGraphQueryResultWriter

extends Object

implements GraphQueryResultListener

A default implementation of GraphQueryResultListener that simply writes all results to System.out. Useful for debugging purposes.

Version:

$Revision: 1.5.4.2 $

Author:

Jeen Broekstra

Constructor Summary

StdOutGraphQueryResultWriter()

Method Summary

void	endGraphQueryResult() Indicates the end of a graph-like query result.
void	namespace(String prefix, String name) Reports a namespace and its (preferred) prefix that might be used in the query result.
void	reportError(String msg) Reports an error that has occurred during the query evaluation.
void	startGraphQueryResult() Indicates the start of a graph-like query result.
void	triple(Resource subj, URI pred, Value obj) Delivers the next triple in the query result.

Methods inherited from class java.lang.Object

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

Constructor Detail

StdOutGraphQueryResultWriter

public StdOutGraphQueryResultWriter()

Method Detail

startGraphQueryResult

public void startGraphQueryResult()
                           throws IOException

Description copied from interface: GraphQueryResultListener

Indicates the start of a graph-like query result.

Specified by:

startGraphQueryResult in interface GraphQueryResultListener

Throws:

IOException

endGraphQueryResult

public void endGraphQueryResult()
                         throws IOException

Description copied from interface: GraphQueryResultListener

Indicates the end of a graph-like query result.

Specified by:

endGraphQueryResult in interface GraphQueryResultListener

Throws:

IOException

namespace

public void namespace(String prefix,
                      String name)
               throws IOException

Description copied from interface: GraphQueryResultListener

Reports a namespace and its (preferred) prefix that might be used in the query result. Namespaces will be reported before the start of the query result as much as possible to accomodate listeners that need these mapping beforehand (like an RDF/XML document writer).

Specified by:

namespace in interface GraphQueryResultListener

Throws:

IOException

triple

public void triple(Resource subj,
                   URI pred,
                   Value obj)
            throws IOException

Description copied from interface: GraphQueryResultListener

Delivers the next triple in the query result.

Specified by:

triple in interface GraphQueryResultListener

Throws:

IOException

reportError

public void reportError(String msg)
                 throws IOException

Description copied from interface: GraphQueryResultListener

Reports an error that has occurred during the query evaluation.

Specified by:

reportError in interface GraphQueryResultListener

Throws:

IOException