casa::vpf::WriterVp Class Reference

#include <VisibilityProcessing.h>

Inheritance diagram for casa::vpf::WriterVp:

Public Member Functions
	WriterVp (const String &name, VisibilityIterator *vi=NULL, Bool advanceVi=False, const String &input="In", const String &output="Out")
	Creates a WriterVp node.
Bool	setDisableOutput (Bool disableIt)
	This paradoxical method allows the user to create a single data flow graph and then programmatically decide at run time whether data should be actually output on this particular run.
Protected Member Functions
ProcessingResult	doProcessingImpl (ProcessingType processingType, VpData &inputData, const SubchunkIndex &subChunkIndex)
	Requests processing of the provided (possibly empty) input data.
void	validateImpl ()
	Called to allow the node to validate its initial state.
Private Attributes
Bool	advanceVi_p
Bool	disableOutput_p
	N.B., advancing the flow graphs VI is prohibited.
VisibilityIterator *	vi_p

Detailed Description

Definition at line 451 of file VisibilityProcessing.h.

Constructor & Destructor Documentation

casa::vpf::WriterVp::WriterVp	(	const String &	name,
		VisibilityIterator *	vi = `NULL`,
		Bool	advanceVi = `False`,
		const String &	input = `"In"`,
		const String &	output = `"Out"`
	)

Creates a WriterVp node.

If the vi argument is NULL then the flow graph's VI is used. The advanceVi argument is used to direct the node to advance the VI after each write (i.e., perform a vi++ operation); advancing the flow graph's VI will cause a run time exception.

Member Function Documentation

ProcessingResult casa::vpf::WriterVp::doProcessingImpl	(	ProcessingType	processingType,
		VpData &	inputData,
		const SubchunkIndex &	subChunkIndex
	)			`[protected, virtual]`

Requests processing of the provided (possibly empty) input data.

This is called on each subchunk (then inputData will be nonempty) and at the end of a chunk and the end of the entire data set. These last two call types allow the VP to output any data that it might have been accumulating across multiple subchunks, etc.

Implements casa::vpf::VisibilityProcessor.

Bool casa::vpf::WriterVp::setDisableOutput ( Bool disableIt )

This paradoxical method allows the user to create a single data flow graph and then programmatically decide at run time whether data should be actually output on this particular run.

void casa::vpf::WriterVp::validateImpl ( ) [protected, virtual]

Called to allow the node to validate its initial state.

An AipsError should be thrown if this node decides that it is invalid.

Implements casa::vpf::VisibilityProcessor.