CompositeExecStreamGenerator Class Reference

Generates a result set consisting of columns each generated by its own generator. More...

#include <ExecStreamGenerator.h>

Inheritance diagram for CompositeExecStreamGenerator:

List of all members.

Public Member Functions
	CompositeExecStreamGenerator (vector< shared_ptr< ColumnGenerator< int64_t > > > const &generatorsInit)
virtual int64_t	generateValue (uint iRow, uint iCol)
	Generates one data value.
Private Member Functions
uint	columnCount ()
Private Attributes
vector< boost::shared_ptr< ColumnGenerator< int64_t > > >	generators
uint	currentRow
uint	currentCol

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Detailed Description

Generates a result set consisting of columns each generated by its own generator.

Author:

Julian Hyde

Definition at line 254 of file ExecStreamGenerator.h.

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Constructor & Destructor Documentation

CompositeExecStreamGenerator::CompositeExecStreamGenerator

(

vector< shared_ptr< ColumnGenerator< int64_t > > > const &

generatorsInit

)

[inline, explicit]

Definition at line 261 of file ExecStreamGenerator.h.

References columnCount(), currentCol, and currentRow.

        : generators(generatorsInit)
    {
        currentRow = uint(-1);
        currentCol = columnCount() - 1;
    }

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Member Function Documentation

virtual int64_t CompositeExecStreamGenerator::generateValue	(	uint	iRow,
		uint	iCol
	)			[inline, virtual]

Generates one data value.

Parameters:

	iRow	0-based row number to generate
	iCol	0-based col number to generate

Implements MockProducerExecStreamGenerator.

Definition at line 269 of file ExecStreamGenerator.h.

References columnCount(), currentCol, currentRow, and generators.

    {
        // Check that access is sequential.
        if (iCol == 0) {
            assert(iRow == currentRow + 1);
            assert(currentCol == columnCount() - 1);
        } else {
            assert(iRow == currentRow);
            assert(iCol == currentCol + 1);
        }
        currentRow = iRow;
        currentCol = iCol;

        return generators[iCol]->next();
    }

uint CompositeExecStreamGenerator::columnCount

(

)

[inline, private]

Definition at line 286 of file ExecStreamGenerator.h.

References generators.

Referenced by CompositeExecStreamGenerator(), and generateValue().

    {
        return generators.size();
    }

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Member Data Documentation

vector<boost::shared_ptr<ColumnGenerator<int64_t> > > CompositeExecStreamGenerator::generators [private]

Definition at line 256 of file ExecStreamGenerator.h.

Referenced by columnCount(), and generateValue().

uint CompositeExecStreamGenerator::currentRow [private]

Definition at line 257 of file ExecStreamGenerator.h.

Referenced by CompositeExecStreamGenerator(), and generateValue().

uint CompositeExecStreamGenerator::currentCol [private]

Definition at line 258 of file ExecStreamGenerator.h.

Referenced by CompositeExecStreamGenerator(), and generateValue().

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

• /home/pub/open/dev/fennel/test/ExecStreamGenerator.h

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