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This commit is contained in:
Leonid Fedorov
@ -17,10 +17,10 @@
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MA 02110-1301, USA. */
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/***********************************************************************
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* $Id$
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*
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*
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***********************************************************************/
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* $Id$
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*
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*
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***********************************************************************/
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/**
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* MariaDB ColumnStore interface for writing a user defined function (UDF).
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@ -55,26 +55,23 @@
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namespace udfsdk
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{
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/**
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* UDFSDK interface. Do not make modification here.
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*/
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class UDFSDK
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{
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public:
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EXPORT UDFSDK();
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public:
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EXPORT UDFSDK();
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EXPORT ~UDFSDK();
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EXPORT ~UDFSDK();
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EXPORT funcexp::FuncMap UDFMap() const;
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protected:
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private:
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//defaults okay
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//UDFSDK(const UDFSDK& rhs);
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//UDFSDK& operator=(const UDFSDK& rhs);
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EXPORT funcexp::FuncMap UDFMap() const;
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protected:
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private:
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// defaults okay
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// UDFSDK(const UDFSDK& rhs);
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// UDFSDK& operator=(const UDFSDK& rhs);
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};
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/**
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@ -104,135 +101,122 @@ private:
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*/
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class MCS_add : public funcexp::Func
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{
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public:
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/*
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* Constructor. Pass the function name to the base constructor.
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||||
*/
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MCS_add() : Func("mcs_add") {}
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public:
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/*
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* Constructor. Pass the function name to the base constructor.
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||||
*/
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MCS_add() : Func("mcs_add")
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{
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}
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/*
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* Destructor. MCS_add does not need to do anything here to clean up.
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||||
*/
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virtual ~MCS_add() {}
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/*
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* Destructor. MCS_add does not need to do anything here to clean up.
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*/
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||||
virtual ~MCS_add()
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{
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}
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||||
|
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/**
|
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* Decide on the function's operation type
|
||||
*
|
||||
* Operation type decides which API needs to be called for each function
|
||||
* parameter. Sometimes it is obvious. e.g. for function substr (c1, c2, c3),
|
||||
* one knows that getStrVal(), getIntVal() and getIntVal() should be called for
|
||||
* the three parameters in sequence. In that case, a dummy type can be returned
|
||||
* because it won't be used in the function implementation. Sometimes the
|
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* operation type is decided by the data type of the function parameters.
|
||||
* e.g., isnull(c1) function, one should call the corresponding getXXXval()
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* function that in compatible with the result type of c1.
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*
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* @parm fp vector of function parameters
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* Each element is a boost::shared_ptr of execplan::ParseTree. class
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* ParseTree is defined in ~/dbcon/execplan/parsetree.h
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* @parm resultType result type of this function
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* Sometimes it may affect the operation type, but most of the time it
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* can be ignored. Struct ColType is defined in ~/dbcon/execplan/calpontsystemcatalog.h
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* @return operation type for this function
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*
|
||||
* This function is called only one from the connector. Once it's determined, it
|
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* will be passed to the getXXXval() APIs during function evaluation.
|
||||
*/
|
||||
execplan::CalpontSystemCatalog::ColType operationType(funcexp::FunctionParm& fp, execplan::CalpontSystemCatalog::ColType& resultType);
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/**
|
||||
* Decide on the function's operation type
|
||||
*
|
||||
* Operation type decides which API needs to be called for each function
|
||||
* parameter. Sometimes it is obvious. e.g. for function substr (c1, c2, c3),
|
||||
* one knows that getStrVal(), getIntVal() and getIntVal() should be called for
|
||||
* the three parameters in sequence. In that case, a dummy type can be returned
|
||||
* because it won't be used in the function implementation. Sometimes the
|
||||
* operation type is decided by the data type of the function parameters.
|
||||
* e.g., isnull(c1) function, one should call the corresponding getXXXval()
|
||||
* function that in compatible with the result type of c1.
|
||||
*
|
||||
* @parm fp vector of function parameters
|
||||
* Each element is a boost::shared_ptr of execplan::ParseTree. class
|
||||
* ParseTree is defined in ~/dbcon/execplan/parsetree.h
|
||||
* @parm resultType result type of this function
|
||||
* Sometimes it may affect the operation type, but most of the time it
|
||||
* can be ignored. Struct ColType is defined in ~/dbcon/execplan/calpontsystemcatalog.h
|
||||
* @return operation type for this function
|
||||
*
|
||||
* This function is called only one from the connector. Once it's determined, it
|
||||
* will be passed to the getXXXval() APIs during function evaluation.
|
||||
*/
|
||||
execplan::CalpontSystemCatalog::ColType operationType(funcexp::FunctionParm& fp,
|
||||
execplan::CalpontSystemCatalog::ColType& resultType);
|
||||
|
||||
/**
|
||||
* Returns an integer result of this function.
|
||||
* All the getXXXvalue APIs take the same arguments. They will be called
|
||||
* for every row in the result set when the function is being evaluated.
|
||||
* So these functions needs to be efficient.
|
||||
*
|
||||
* @parm row reference of the current row
|
||||
* @parm fp function parameters
|
||||
* @parm isNull NULL indicator throughout this function evaluation.
|
||||
* the same reference is passed to all the function argument
|
||||
* evaluations. One always need to know if any argument is NULL
|
||||
* to decide the result of the function. It's explained in detail
|
||||
* in MCS_isnull() function example.
|
||||
* @parm op_ct the operation type that is determined in operationType().
|
||||
*
|
||||
*/
|
||||
virtual int64_t getIntVal(rowgroup::Row& row,
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||||
funcexp::FunctionParm& fp,
|
||||
bool& isNull,
|
||||
execplan::CalpontSystemCatalog::ColType& op_ct);
|
||||
|
||||
/**
|
||||
* Returns a double result of this function.
|
||||
*/
|
||||
|
||||
virtual double getDoubleVal(rowgroup::Row& row,
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||||
funcexp::FunctionParm& fp,
|
||||
bool& isNull,
|
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execplan::CalpontSystemCatalog::ColType& op_ct);
|
||||
|
||||
/**
|
||||
* Returns a long double result of this function.
|
||||
*/
|
||||
|
||||
virtual long double getLongDoubleVal(rowgroup::Row& row,
|
||||
funcexp::FunctionParm& fp,
|
||||
bool& isNull,
|
||||
execplan::CalpontSystemCatalog::ColType& op_ct);
|
||||
/**
|
||||
* Returns a float result of this function.
|
||||
*/
|
||||
virtual float getFloatVal(rowgroup::Row& row,
|
||||
funcexp::FunctionParm& fp,
|
||||
bool& isNull,
|
||||
execplan::CalpontSystemCatalog::ColType& op_ct);
|
||||
|
||||
/**
|
||||
* Returns a string result of this function.
|
||||
*/
|
||||
virtual std::string getStrVal(rowgroup::Row& row,
|
||||
funcexp::FunctionParm& fp,
|
||||
bool& isNull,
|
||||
execplan::CalpontSystemCatalog::ColType& op_ct);
|
||||
|
||||
/**
|
||||
* Returns a bool result of this function.
|
||||
*/
|
||||
virtual bool getBoolVal(rowgroup::Row& row,
|
||||
funcexp::FunctionParm& fp,
|
||||
bool& isNull,
|
||||
/**
|
||||
* Returns an integer result of this function.
|
||||
* All the getXXXvalue APIs take the same arguments. They will be called
|
||||
* for every row in the result set when the function is being evaluated.
|
||||
* So these functions needs to be efficient.
|
||||
*
|
||||
* @parm row reference of the current row
|
||||
* @parm fp function parameters
|
||||
* @parm isNull NULL indicator throughout this function evaluation.
|
||||
* the same reference is passed to all the function argument
|
||||
* evaluations. One always need to know if any argument is NULL
|
||||
* to decide the result of the function. It's explained in detail
|
||||
* in MCS_isnull() function example.
|
||||
* @parm op_ct the operation type that is determined in operationType().
|
||||
*
|
||||
*/
|
||||
virtual int64_t getIntVal(rowgroup::Row& row, funcexp::FunctionParm& fp, bool& isNull,
|
||||
execplan::CalpontSystemCatalog::ColType& op_ct);
|
||||
|
||||
/**
|
||||
* Returns a decimal result of this function.
|
||||
*
|
||||
* IDB_Decimal is defined in ~/execplan/treenode.h
|
||||
*/
|
||||
virtual execplan::IDB_Decimal getDecimalVal(rowgroup::Row& row,
|
||||
funcexp::FunctionParm& fp,
|
||||
bool& isNull,
|
||||
execplan::CalpontSystemCatalog::ColType& op_ct);
|
||||
/**
|
||||
* Returns a double result of this function.
|
||||
*/
|
||||
|
||||
/**
|
||||
* Returns an integer representation of a date result of the function.
|
||||
*
|
||||
* Check the date/time functions in ~/utils/funcexp for implementation
|
||||
* example of this API.
|
||||
*/
|
||||
virtual int32_t getDateIntVal(rowgroup::Row& row,
|
||||
funcexp::FunctionParm& fp,
|
||||
bool& isNull,
|
||||
execplan::CalpontSystemCatalog::ColType& op_ct);
|
||||
virtual double getDoubleVal(rowgroup::Row& row, funcexp::FunctionParm& fp, bool& isNull,
|
||||
execplan::CalpontSystemCatalog::ColType& op_ct);
|
||||
|
||||
/**
|
||||
* Returns an integer representation of a datetime result of the function.
|
||||
*
|
||||
* Check the date/time functions in ~/utils/funcexp for implementation
|
||||
* example of this API.
|
||||
*/
|
||||
virtual int64_t getDatetimeIntVal(rowgroup::Row& row,
|
||||
funcexp::FunctionParm& fp,
|
||||
bool& isNull,
|
||||
execplan::CalpontSystemCatalog::ColType& op_ct);
|
||||
/**
|
||||
* Returns a long double result of this function.
|
||||
*/
|
||||
|
||||
virtual long double getLongDoubleVal(rowgroup::Row& row, funcexp::FunctionParm& fp, bool& isNull,
|
||||
execplan::CalpontSystemCatalog::ColType& op_ct);
|
||||
/**
|
||||
* Returns a float result of this function.
|
||||
*/
|
||||
virtual float getFloatVal(rowgroup::Row& row, funcexp::FunctionParm& fp, bool& isNull,
|
||||
execplan::CalpontSystemCatalog::ColType& op_ct);
|
||||
|
||||
/**
|
||||
* Returns a string result of this function.
|
||||
*/
|
||||
virtual std::string getStrVal(rowgroup::Row& row, funcexp::FunctionParm& fp, bool& isNull,
|
||||
execplan::CalpontSystemCatalog::ColType& op_ct);
|
||||
|
||||
/**
|
||||
* Returns a bool result of this function.
|
||||
*/
|
||||
virtual bool getBoolVal(rowgroup::Row& row, funcexp::FunctionParm& fp, bool& isNull,
|
||||
execplan::CalpontSystemCatalog::ColType& op_ct);
|
||||
|
||||
/**
|
||||
* Returns a decimal result of this function.
|
||||
*
|
||||
* IDB_Decimal is defined in ~/execplan/treenode.h
|
||||
*/
|
||||
virtual execplan::IDB_Decimal getDecimalVal(rowgroup::Row& row, funcexp::FunctionParm& fp, bool& isNull,
|
||||
execplan::CalpontSystemCatalog::ColType& op_ct);
|
||||
|
||||
/**
|
||||
* Returns an integer representation of a date result of the function.
|
||||
*
|
||||
* Check the date/time functions in ~/utils/funcexp for implementation
|
||||
* example of this API.
|
||||
*/
|
||||
virtual int32_t getDateIntVal(rowgroup::Row& row, funcexp::FunctionParm& fp, bool& isNull,
|
||||
execplan::CalpontSystemCatalog::ColType& op_ct);
|
||||
|
||||
/**
|
||||
* Returns an integer representation of a datetime result of the function.
|
||||
*
|
||||
* Check the date/time functions in ~/utils/funcexp for implementation
|
||||
* example of this API.
|
||||
*/
|
||||
virtual int64_t getDatetimeIntVal(rowgroup::Row& row, funcexp::FunctionParm& fp, bool& isNull,
|
||||
execplan::CalpontSystemCatalog::ColType& op_ct);
|
||||
};
|
||||
|
||||
/**
|
||||
@ -242,106 +226,92 @@ public:
|
||||
*/
|
||||
class MCS_isnull : public funcexp::Func
|
||||
{
|
||||
public:
|
||||
/*
|
||||
* Constructor. Pass the function name to the base constructor.
|
||||
*/
|
||||
MCS_isnull() : Func("mcs_isnull") {}
|
||||
public:
|
||||
/*
|
||||
* Constructor. Pass the function name to the base constructor.
|
||||
*/
|
||||
MCS_isnull() : Func("mcs_isnull")
|
||||
{
|
||||
}
|
||||
|
||||
/*
|
||||
* Destructor. MCS_add does not need to do anything here to clean up.
|
||||
*/
|
||||
virtual ~MCS_isnull() {}
|
||||
/*
|
||||
* Destructor. MCS_add does not need to do anything here to clean up.
|
||||
*/
|
||||
virtual ~MCS_isnull()
|
||||
{
|
||||
}
|
||||
|
||||
/**
|
||||
* Decide on the function's operation type
|
||||
*/
|
||||
execplan::CalpontSystemCatalog::ColType operationType(funcexp::FunctionParm& fp, execplan::CalpontSystemCatalog::ColType& resultType);
|
||||
/**
|
||||
* Decide on the function's operation type
|
||||
*/
|
||||
execplan::CalpontSystemCatalog::ColType operationType(funcexp::FunctionParm& fp,
|
||||
execplan::CalpontSystemCatalog::ColType& resultType);
|
||||
|
||||
/**
|
||||
* Returns an integer result of this function.
|
||||
*/
|
||||
virtual int64_t getIntVal(rowgroup::Row& row,
|
||||
funcexp::FunctionParm& fp,
|
||||
bool& isNull,
|
||||
execplan::CalpontSystemCatalog::ColType& op_ct);
|
||||
|
||||
/**
|
||||
* Returns a double result of this function.
|
||||
*/
|
||||
virtual double getDoubleVal(rowgroup::Row& row,
|
||||
funcexp::FunctionParm& fp,
|
||||
bool& isNull,
|
||||
execplan::CalpontSystemCatalog::ColType& op_ct);
|
||||
|
||||
/**
|
||||
* Returns a double result of this function.
|
||||
*/
|
||||
virtual long double getLongDoubleVal(rowgroup::Row& row,
|
||||
funcexp::FunctionParm& fp,
|
||||
bool& isNull,
|
||||
execplan::CalpontSystemCatalog::ColType& op_ct);
|
||||
|
||||
/**
|
||||
* Returns a float result of this function.
|
||||
*/
|
||||
virtual float getFloatVal(rowgroup::Row& row,
|
||||
funcexp::FunctionParm& fp,
|
||||
bool& isNull,
|
||||
execplan::CalpontSystemCatalog::ColType& op_ct);
|
||||
|
||||
/**
|
||||
* Returns a string result of this function.
|
||||
*/
|
||||
virtual std::string getStrVal(rowgroup::Row& row,
|
||||
funcexp::FunctionParm& fp,
|
||||
bool& isNull,
|
||||
execplan::CalpontSystemCatalog::ColType& op_ct);
|
||||
|
||||
/**
|
||||
* Returns a bool result of this function.
|
||||
*/
|
||||
virtual bool getBoolVal(rowgroup::Row& row,
|
||||
funcexp::FunctionParm& fp,
|
||||
bool& isNull,
|
||||
/**
|
||||
* Returns an integer result of this function.
|
||||
*/
|
||||
virtual int64_t getIntVal(rowgroup::Row& row, funcexp::FunctionParm& fp, bool& isNull,
|
||||
execplan::CalpontSystemCatalog::ColType& op_ct);
|
||||
|
||||
/**
|
||||
* Returns a decimal result of this function.
|
||||
*
|
||||
* IDB_Decimal is defined in ~/execplan/treenode.h
|
||||
*/
|
||||
virtual execplan::IDB_Decimal getDecimalVal(rowgroup::Row& row,
|
||||
funcexp::FunctionParm& fp,
|
||||
bool& isNull,
|
||||
execplan::CalpontSystemCatalog::ColType& op_ct);
|
||||
/**
|
||||
* Returns a double result of this function.
|
||||
*/
|
||||
virtual double getDoubleVal(rowgroup::Row& row, funcexp::FunctionParm& fp, bool& isNull,
|
||||
execplan::CalpontSystemCatalog::ColType& op_ct);
|
||||
|
||||
/**
|
||||
* Returns an integer representation of a date result of the function.
|
||||
*
|
||||
* Check the date/time functions in ~/utils/funcexp for implementation
|
||||
* example of this API.
|
||||
*/
|
||||
virtual int32_t getDateIntVal(rowgroup::Row& row,
|
||||
funcexp::FunctionParm& fp,
|
||||
bool& isNull,
|
||||
execplan::CalpontSystemCatalog::ColType& op_ct);
|
||||
/**
|
||||
* Returns a double result of this function.
|
||||
*/
|
||||
virtual long double getLongDoubleVal(rowgroup::Row& row, funcexp::FunctionParm& fp, bool& isNull,
|
||||
execplan::CalpontSystemCatalog::ColType& op_ct);
|
||||
|
||||
/**
|
||||
* Returns an integer representation of a datetime result of the function.
|
||||
*
|
||||
* Check the date/time functions in ~/utils/funcexp for implementation
|
||||
* example of this API.
|
||||
*/
|
||||
virtual int64_t getDatetimeIntVal(rowgroup::Row& row,
|
||||
funcexp::FunctionParm& fp,
|
||||
bool& isNull,
|
||||
execplan::CalpontSystemCatalog::ColType& op_ct);
|
||||
/**
|
||||
* Returns a float result of this function.
|
||||
*/
|
||||
virtual float getFloatVal(rowgroup::Row& row, funcexp::FunctionParm& fp, bool& isNull,
|
||||
execplan::CalpontSystemCatalog::ColType& op_ct);
|
||||
|
||||
/**
|
||||
* Returns a string result of this function.
|
||||
*/
|
||||
virtual std::string getStrVal(rowgroup::Row& row, funcexp::FunctionParm& fp, bool& isNull,
|
||||
execplan::CalpontSystemCatalog::ColType& op_ct);
|
||||
|
||||
/**
|
||||
* Returns a bool result of this function.
|
||||
*/
|
||||
virtual bool getBoolVal(rowgroup::Row& row, funcexp::FunctionParm& fp, bool& isNull,
|
||||
execplan::CalpontSystemCatalog::ColType& op_ct);
|
||||
|
||||
/**
|
||||
* Returns a decimal result of this function.
|
||||
*
|
||||
* IDB_Decimal is defined in ~/execplan/treenode.h
|
||||
*/
|
||||
virtual execplan::IDB_Decimal getDecimalVal(rowgroup::Row& row, funcexp::FunctionParm& fp, bool& isNull,
|
||||
execplan::CalpontSystemCatalog::ColType& op_ct);
|
||||
|
||||
/**
|
||||
* Returns an integer representation of a date result of the function.
|
||||
*
|
||||
* Check the date/time functions in ~/utils/funcexp for implementation
|
||||
* example of this API.
|
||||
*/
|
||||
virtual int32_t getDateIntVal(rowgroup::Row& row, funcexp::FunctionParm& fp, bool& isNull,
|
||||
execplan::CalpontSystemCatalog::ColType& op_ct);
|
||||
|
||||
/**
|
||||
* Returns an integer representation of a datetime result of the function.
|
||||
*
|
||||
* Check the date/time functions in ~/utils/funcexp for implementation
|
||||
* example of this API.
|
||||
*/
|
||||
virtual int64_t getDatetimeIntVal(rowgroup::Row& row, funcexp::FunctionParm& fp, bool& isNull,
|
||||
execplan::CalpontSystemCatalog::ColType& op_ct);
|
||||
};
|
||||
|
||||
}
|
||||
} // namespace udfsdk
|
||||
|
||||
#undef EXPORT
|
||||
|
||||
// vim:ts=4 sw=4:
|
||||
|
||||
|
||||
Reference in New Issue
Block a user