casacore
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Abstract base class for aggregate functions giving a bool scalar. More...
#include <ExprGroup.h>
Public Member Functions | |
TableExprGroupFuncBool (TableExprNodeRep *node) | |
TableExprGroupFuncBool (TableExprNodeRep *node, Bool initValue) | |
virtual | ~TableExprGroupFuncBool () |
virtual Bool | getBool (const vector< TableExprId > &) |
Get the aggregated value. More... | |
Public Member Functions inherited from casacore::TableExprGroupFuncBase | |
TableExprGroupFuncBase (TableExprNodeRep *node) | |
Construct from the TaQL aggregation node. More... | |
virtual | ~TableExprGroupFuncBase () |
virtual Bool | isLazy () const |
Does the aggregate function use lazy semantics? The default implementation returns False. More... | |
uInt | seqnr () const |
Get the function's sequence nr. More... | |
void | setSeqnr (uInt seqnr) |
Set the function's sequence nr. More... | |
virtual void | apply (const TableExprId &id)=0 |
Get the operand's value for the given row and apply it to the aggregation. More... | |
virtual void | finish () |
If needed, finish the aggregation. More... | |
virtual CountedPtr< vector< TableExprId > > | getIds () const |
Get the assembled TableExprIds of a group. More... | |
virtual Int64 | getInt (const vector< TableExprId > &=vector< TableExprId >()) |
virtual Double | getDouble (const vector< TableExprId > &=vector< TableExprId >()) |
virtual DComplex | getDComplex (const vector< TableExprId > &=vector< TableExprId >()) |
virtual MVTime | getDate (const vector< TableExprId > &=vector< TableExprId >()) |
virtual String | getString (const vector< TableExprId > &=vector< TableExprId >()) |
virtual MArray< Bool > | getArrayBool (const vector< TableExprId > &=vector< TableExprId >()) |
virtual MArray< Int64 > | getArrayInt (const vector< TableExprId > &=vector< TableExprId >()) |
virtual MArray< Double > | getArrayDouble (const vector< TableExprId > &=vector< TableExprId >()) |
virtual MArray< DComplex > | getArrayDComplex (const vector< TableExprId > &=vector< TableExprId >()) |
virtual MArray< MVTime > | getArrayDate (const vector< TableExprId > &=vector< TableExprId >()) |
virtual MArray< String > | getArrayString (const vector< TableExprId > &=vector< TableExprId >()) |
Protected Attributes | |
Bool | itsValue |
Protected Attributes inherited from casacore::TableExprGroupFuncBase | |
TableExprNodeRep * | itsNode |
TableExprNodeRep * | itsOperand |
uInt | itsSeqnr |
Abstract base class for aggregate functions giving a bool scalar.
Internal
This class is derived from TableExprGroupFuncBase and acts as the abstract base class for aggregate functions resulting in a bool scalar.
Derived classes can use itsValue
to contain the aggregated value. It that case they do not need to implement the get
function.
Definition at line 469 of file ExprGroup.h.
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inlineexplicit |
Definition at line 472 of file ExprGroup.h.
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inline |
Definition at line 475 of file ExprGroup.h.
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virtual |
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virtual |
Get the aggregated value.
Immediate classes can return the already calculated value, while lazy classes will get the values of all rows given by the TableExprIds and do the aggregation.
Reimplemented from casacore::TableExprGroupFuncBase.
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protected |
Definition at line 482 of file ExprGroup.h.