ResampleQBox Class Reference

#include <ResampleQBox.h>

Inherits QBox.

List of all members.

Protected Member Functions
void	setupImpl () throw (AuroraException)
void	initImpl () throw (AuroraException)
void	runImpl (QBoxInvocation &) throw (AuroraException)
	AURORA_DECLARE_QBOX (ResampleQBox,"resample")

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Member Function Documentation

ResampleQBox::AURORA_DECLARE_QBOX (  ResampleQBox  , "resample"  )  [protected]

void ResampleQBox::initImpl (   )  throw (AuroraException) [protected, virtual]

Reimplemented from QBox.

void ResampleQBox::runImpl (  QBoxInvocation &   )  throw (AuroraException) [protected, virtual]

Reimplemented from QBox.

void ResampleQBox::setupImpl (   )  throw (AuroraException) [protected, virtual]

Need at least one agg function ExprContext ctxt; ctxt.setTupleDescription(getInputDescription(0)); s = param("aggregate-function",PARAM_NON_EMPTY); if (s == "") Throw(AuroraTypingException,"Aggregate box must have an 'aggregate-function' defined"); _resample_function = Aggregate::parse(s,ctxt); Set the output stream description, based on the function (see MapQBox.C for some discussion on how to do this) vector<TupleDescription::Field> fields; OUTPUT TYPE IS : order-on agg-function-return-types ORDER-ON field fields.push_back(TupleDescription::Field("orderedon", (_left_field_att->getReturnTypes())[0], _left_order_att_size)); AGGREGATE RETURN TYPES for (int i = 0; i < _resample_function->numOutputFields(); ++i) { string name("agg[0]." + to_string(i)); TupleDescription::Field f_field = _resample_function->getOutputField(i); TupleDescription::Field my_field(name, f_field.getType(), f_field.getSize(), f_field.getOffset()); fields.push_back(my_field); } Implements QBox.

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The documentation for this class was generated from the following files:

• ResampleQBox.h
• ResampleQBox.cc

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