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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#include <CPlusPlusLambda.h>
Public Member Functions | |
CPlusPlusLambda (F arg, Handle< ParamOne > &input1, Handle< ParamTwo > &input2, Handle< ParamThree > &input3, Handle< ParamFour > &input4, Handle< ParamFive > &input5) | |
unsigned int | getNumInputs () override |
std::string | getTypeOfLambda () override |
GenericLambdaObjectPtr | getChild (int which) override |
int | getNumChildren () override |
~CPlusPlusLambda () | |
ComputeExecutorPtr | getExecutor (TupleSpec &inputSchema, TupleSpec &attsToOperateOn, TupleSpec &attsToIncludeInOutput) override |
std::string | toTCAPStringForCartesianJoin (int lambdaLabel, std::string computationName, int computationLabel, std::string &outputTupleSetName, std::vector< std::string > &outputColumns, std::string &outputColumnName, std::string &myLambdaName, MultiInputsBase *multiInputsComp) override |
std::map< std::string, std::string > | getInfo () override |
Public Member Functions inherited from pdb::TypedLambdaObject< ReturnType > | |
virtual | ~TypedLambdaObject ()=default |
std::string | getOutputType () override |
Public Member Functions inherited from pdb::GenericLambdaObject | |
virtual | ~GenericLambdaObject ()=default |
void | setInputIndex (int i, unsigned int index) |
virtual unsigned int | getInputIndex (int i) |
virtual ComputeExecutorPtr | getExecutor (TupleSpec &inputSchema, TupleSpec &attsToOperateOn, TupleSpec &attsToIncludeInOutput, ComputeInfoPtr) |
virtual ComputeExecutorPtr | getLeftHasher (TupleSpec &inputSchema, TupleSpec &attsToOperateOn, TupleSpec &attsToIncludeInOutput) |
virtual ComputeExecutorPtr | getLeftHasher (TupleSpec &inputSchema, TupleSpec &attsToOperateOn, TupleSpec &attsToIncludeInOutput, ComputeInfoPtr) |
virtual ComputeExecutorPtr | getRightHasher (TupleSpec &inputSchema, TupleSpec &attsToOperateOn, TupleSpec &attsToIncludeInOutput) |
virtual ComputeExecutorPtr | getRightHasher (TupleSpec &inputSchema, TupleSpec &attsToOperateOn, TupleSpec &attsToIncludeInOutput, ComputeInfoPtr) |
std::string | getTCAPString (const std::string &inputTupleSetName, const std::vector< std::string > &inputColumnNames, const std::vector< std::string > &inputColumnsToApply, const std::string &outputTupleSetName, const std::vector< std::string > &outputColumns, const std::string &outputColumnName, const std::string &tcapOperation, const std::string &computationNameAndLabel, const std::string &lambdaNameAndLabel, const std::map< std::string, std::string > &info) |
virtual std::string | toTCAPString (std::vector< std::string > &inputTupleSetNames, std::vector< std::string > &inputColumnNames, std::vector< std::string > &inputColumnsToApply, std::vector< std::string > &childrenLambdaNames, int lambdaLabel, std::string computationName, int computationLabel, std::string &outputTupleSetName, std::vector< std::string > &outputColumns, std::string &outputColumnName, std::string &myLambdaName, MultiInputsBase *multiInputsComp=nullptr, bool amIPartOfJoinPredicate=false, bool amILeftChildOfEqualLambda=false, bool amIRightChildOfEqualLambda=false, std::string parentLambdaName="", bool isSelfJoin=false) |
Private Attributes | |
F | myFunc |
int | numInputs = 0 |
Definition at line 122 of file CPlusPlusLambda.h.
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inline |
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inline |
Definition at line 178 of file CPlusPlusLambda.h.
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inlineoverridevirtual |
gets a particular child of this Lambda
which | - // TODO missing description |
Implements pdb::GenericLambdaObject.
Definition at line 170 of file CPlusPlusLambda.h.
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inlineoverridevirtual |
Used this gets an executor that appends the result of running this lambda to the end of each tuple
inputSchema | - // TODO missing description |
attsToOperateOn | - // TODO missing description |
attsToIncludeInOutput | - // TODO missing description |
Implements pdb::GenericLambdaObject.
Definition at line 181 of file CPlusPlusLambda.h.
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inlineoverridevirtual |
Returns the additional information about this lambda currently lambda type
Implements pdb::GenericLambdaObject.
Definition at line 485 of file CPlusPlusLambda.h.
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inlineoverridevirtual |
one big technical problem is that when tuples are added to a hash table to be recovered at a later time, we we break a pipeline. The difficulty with this is that when we want to probe a hash table to find a set of hash values, we can't use the input TupleSet as a way to create the columns to store the result of the probe. The hash table needs to be able to create (from scratch) the columns that store the output. This is a problem, because the hash table has no information about the types of the objects that it contains. The way around this is that we have a function attached to each GenericLambdaObject that allows us to ask the GenericLambdaObject to try to add a column to a tuple set, of a specific type, where the type name is specified as a string. When the hash table needs to create an output TupleSet, it can ask all of the GenericLambdaObjects associated with a query to create the necessary columns, as a way to build up the output TupleSet. This method is how the hash table can ask for this. It takes tree args: the type of the column that the hash table wants the tuple set to build, the tuple set to add the column to, and the position where the column will be added. If the GenericLambdaObject cannot build the column (it has no knowledge of that type) a false is returned. Otherwise, a true is returned. virtual bool addColumnToTupleSet (std :: string &typeToMatch, TupleSetPtr addToMe, int posToAddTo) = 0; returns the number of children of this Lambda type
Implements pdb::GenericLambdaObject.
Definition at line 174 of file CPlusPlusLambda.h.
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inlineoverridevirtual |
Used to get number of inputs to this Lambda
Implements pdb::GenericLambdaObject.
Definition at line 162 of file CPlusPlusLambda.h.
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inlineoverridevirtual |
returns the name of this LambdaBase type, as a string
Implements pdb::GenericLambdaObject.
Definition at line 166 of file CPlusPlusLambda.h.
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inlineoverridevirtual |
// TODO missing description
lambdaLabel | - // TODO missing description |
computationName | - // TODO missing description |
computationLabel | - // TODO missing description |
outputTupleSetName | - // TODO missing description |
outputColumns | - // TODO missing description |
outputColumnName | - // TODO missing description |
myLambdaName | - // TODO missing description |
multiInputsComp | - // TODO missing description |
Reimplemented from pdb::GenericLambdaObject.
Definition at line 241 of file CPlusPlusLambda.h.
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private |
Definition at line 125 of file CPlusPlusLambda.h.
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private |
Definition at line 126 of file CPlusPlusLambda.h.