DupRepeatingSeqColumnGenerator Class Reference

A duplicating repeating column sequence generator. More...

#include <ExecStreamGenerator.h>

Inheritance diagram for DupRepeatingSeqColumnGenerator:

List of all members.

Public Member Functions
	DupRepeatingSeqColumnGenerator (int numSequenceInit, int numDupsInit)
int64_t	next ()
Private Attributes
int	numDups
int	numSequence
int64_t	curValue

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Detailed Description

A duplicating repeating column sequence generator.

Generates column values in a repeating sequence. Values are duplicated for each sequence value, and repeat after nSequence values. E.g., 0, 0, 0, ..., 1, 1, 1, ... 2, 2, 2, ..., n-1, n-1, n-1, ..., 0, 0, 0, ...

Definition at line 416 of file ExecStreamGenerator.h.

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Constructor & Destructor Documentation

DupRepeatingSeqColumnGenerator::DupRepeatingSeqColumnGenerator	(	int	numSequenceInit,
		int	numDupsInit
	)			[inline, explicit]

Definition at line 423 of file ExecStreamGenerator.h.

References curValue, numDups, and numSequence.

    {
        assert(numSequenceInit > 0);
        assert(numDupsInit > 0);
        numSequence = numSequenceInit;
        numDups = numDupsInit;
        curValue = 0;
    }

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Member Function Documentation

int64_t DupRepeatingSeqColumnGenerator::next

(

)

[inline, virtual]

Implements ColumnGenerator< T >.

Definition at line 434 of file ExecStreamGenerator.h.

References curValue, numDups, and numSequence.

    {
        return (curValue++ % (numDups * numSequence)) / numDups;
    }

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Member Data Documentation

int DupRepeatingSeqColumnGenerator::numDups [private]

Definition at line 418 of file ExecStreamGenerator.h.

Referenced by DupRepeatingSeqColumnGenerator(), and next().

int DupRepeatingSeqColumnGenerator::numSequence [private]

Definition at line 419 of file ExecStreamGenerator.h.

Referenced by DupRepeatingSeqColumnGenerator(), and next().

int64_t DupRepeatingSeqColumnGenerator::curValue [private]

Definition at line 420 of file ExecStreamGenerator.h.

Referenced by DupRepeatingSeqColumnGenerator(), and next().

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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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