A platform for high-performance distributed tool and library development written in C++. It can be deployed in two different cluster modes: standalone or distributed. API for v0.5.0, released on June 13, 2018.
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pdb::HashPartitionTransformationSink< ValueType > Class Template Reference

#include <HashPartitionTransformationSink.h>

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Public Member Functions

 HashPartitionTransformationSink (int numPartitions, int numNodes, TupleSpec &inputSchema, TupleSpec &attToOperateOn)
 
Handle< Object > createNewOutputContainer () override
 
void writeOut (TupleSetPtr input, Handle< Object > &writeToMe) override
 
 ~HashPartitionTransformationSink ()
 
- Public Member Functions inherited from pdb::ComputeSink
virtual ~ComputeSink ()
 

Private Attributes

int whichAttToHash
 
int numPartitions
 
int numNodes
 

Detailed Description

template<class ValueType>
class pdb::HashPartitionTransformationSink< ValueType >

Definition at line 34 of file HashPartitionTransformationSink.h.

Constructor & Destructor Documentation

template<class ValueType >
pdb::HashPartitionTransformationSink< ValueType >::HashPartitionTransformationSink ( int  numPartitions,
int  numNodes,
TupleSpec &  inputSchema,
TupleSpec &  attToOperateOn 
)
inline

constructor.

Parameters
numPartitionsnumber of partitions in the cluster
inputSchemathe schema of input tuple set
attToOperateOnthe column that we want to partition and keep

Definition at line 45 of file HashPartitionTransformationSink.h.

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template<class ValueType >
pdb::HashPartitionTransformationSink< ValueType >::~HashPartitionTransformationSink ( )
inline

Definition at line 125 of file HashPartitionTransformationSink.h.

Member Function Documentation

template<class ValueType >
Handle<Object> pdb::HashPartitionTransformationSink< ValueType >::createNewOutputContainer ( )
inlineoverridevirtual

create container for output

Returns
: a new container for partitioned output

Implements pdb::ComputeSink.

Definition at line 62 of file HashPartitionTransformationSink.h.

template<class ValueType >
void pdb::HashPartitionTransformationSink< ValueType >::writeOut ( TupleSetPtr  input,
Handle< Object > &  writeToMe 
)
inlineoverridevirtual

partition the input tuple set, and store the partitioned result to the output container

Parameters
inputthe input tuple set
writeToMethe output container

Implements pdb::ComputeSink.

Definition at line 89 of file HashPartitionTransformationSink.h.

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Member Data Documentation

template<class ValueType >
int pdb::HashPartitionTransformationSink< ValueType >::numNodes
private

Definition at line 136 of file HashPartitionTransformationSink.h.

template<class ValueType >
int pdb::HashPartitionTransformationSink< ValueType >::numPartitions
private

Definition at line 133 of file HashPartitionTransformationSink.h.

template<class ValueType >
int pdb::HashPartitionTransformationSink< ValueType >::whichAttToHash
private

Definition at line 130 of file HashPartitionTransformationSink.h.

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