org.openrdf.query.resultio.binary
Class BinaryQueryResultWriter

java.lang.Object
  org.openrdf.query.resultio.binary.BinaryQueryResultWriter

All Implemented Interfaces:

TupleQueryResultWriter, TupleQueryResultHandler

public class BinaryQueryResultWriter
extends Object
implements TupleQueryResultWriter

Writer for the binary tuple result format. The format is explained in BinaryQueryResultConstants.

Author:

Arjohn Kampman

Constructor Summary

BinaryQueryResultWriter(OutputStream out)

Method Summary

void	endQueryResult() Indicates the end of a sequence of solutions.
void	error(QueryErrorType errType, String msg) Writes an error msg to the stream.
TupleQueryResultFormat	getTupleQueryResultFormat() Gets the query result format that this writer uses.
void	handleSolution(BindingSet bindingSet) Handles a solution.
void	startQueryResult(List<String> bindingNames) Indicates the start of a sequence of Solutions.

Methods inherited from class java.lang.Object

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

Constructor Detail

BinaryQueryResultWriter

public BinaryQueryResultWriter(OutputStream out)

Method Detail

getTupleQueryResultFormat

public final TupleQueryResultFormat getTupleQueryResultFormat()

Description copied from interface: TupleQueryResultWriter

Gets the query result format that this writer uses.

Specified by:

getTupleQueryResultFormat in interface TupleQueryResultWriter

startQueryResult

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

Description copied from interface: TupleQueryResultHandler

Indicates the start of a sequence of Solutions. The supplied bindingNames are an indication of the values that are in the Solutions. For example, a SeRQL query like select X, Y from {X} P {Y} will have binding names X and Y.

Specified by:

startQueryResult in interface TupleQueryResultHandler

Parameters:

bindingNames - An ordered set of binding names.

Throws:

TupleQueryResultHandlerException

endQueryResult

public void endQueryResult()
                    throws TupleQueryResultHandlerException

Description copied from interface: TupleQueryResultHandler

Indicates the end of a sequence of solutions.

Specified by:

endQueryResult in interface TupleQueryResultHandler

Throws:

TupleQueryResultHandlerException

handleSolution

public void handleSolution(BindingSet bindingSet)
                    throws TupleQueryResultHandlerException

Description copied from interface: TupleQueryResultHandler

Handles a solution.

Specified by:

handleSolution in interface TupleQueryResultHandler

Throws:

TupleQueryResultHandlerException

error

public void error(QueryErrorType errType,
                  String msg)
           throws IOException

Writes an error msg to the stream.

Parameters:

errType - The error type.

msg - The error message.

Throws:

IOException - When the error could not be written to the stream.