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casacore::TableExprGroupFirst Class Reference

Class derived from TableExprGroupFuncBase for the first value in a group. More...

#include <ExprGroup.h>

Inheritance diagram for casacore::TableExprGroupFirst:
casacore::TableExprGroupFuncBase casacore::TableExprGroupLast

Public Member Functions

 TableExprGroupFirst (TableExprNodeRep *node)
 
virtual ~TableExprGroupFirst ()
 
virtual void apply (const TableExprId &id)
 Get the operand's value for the given row and apply it to the aggregation. More...
 
virtual Bool getBool (const vector< TableExprId > &)
 Get the aggregated value. More...
 
virtual Int64 getInt (const vector< TableExprId > &)
 
virtual Double getDouble (const vector< TableExprId > &)
 
virtual DComplex getDComplex (const vector< TableExprId > &)
 
virtual MVTime getDate (const vector< TableExprId > &)
 
virtual String getString (const vector< TableExprId > &)
 
virtual MArray< BoolgetArrayBool (const vector< TableExprId > &)
 
virtual MArray< Int64getArrayInt (const vector< TableExprId > &)
 
virtual MArray< DoublegetArrayDouble (const vector< TableExprId > &)
 
virtual MArray< DComplex > getArrayDComplex (const vector< TableExprId > &)
 
virtual MArray< MVTimegetArrayDate (const vector< TableExprId > &)
 
virtual MArray< StringgetArrayString (const vector< TableExprId > &)
 
- 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 finish ()
 If needed, finish the aggregation. More...
 
virtual CountedPtr< vector
< TableExprId > > 
getIds () const
 Get the assembled TableExprIds of a group. More...
 

Protected Attributes

TableExprId itsId
 
- Protected Attributes inherited from casacore::TableExprGroupFuncBase
TableExprNodeRepitsNode
 
TableExprNodeRepitsOperand
 
uInt itsSeqnr
 

Detailed Description

Class derived from TableExprGroupFuncBase for the first value in a group.

Intended use:

Internal

Review Status

Test programs:
tExprGroup

Synopsis

This class keeps the TableExprId of the first value in a group. The 'getXXX' functions get the value for that TableExprId.

Definition at line 285 of file ExprGroup.h.

Constructor & Destructor Documentation

casacore::TableExprGroupFirst::TableExprGroupFirst ( TableExprNodeRep node)
explicit
virtual casacore::TableExprGroupFirst::~TableExprGroupFirst ( )
virtual

Member Function Documentation

virtual void casacore::TableExprGroupFirst::apply ( const TableExprId id)
virtual

Get the operand's value for the given row and apply it to the aggregation.

This function should not be called for lazy classes.

Implements casacore::TableExprGroupFuncBase.

Reimplemented in casacore::TableExprGroupLast.

virtual MArray<Bool> casacore::TableExprGroupFirst::getArrayBool ( const vector< TableExprId > &  )
virtual

Reimplemented from casacore::TableExprGroupFuncBase.

virtual MArray<MVTime> casacore::TableExprGroupFirst::getArrayDate ( const vector< TableExprId > &  )
virtual

Reimplemented from casacore::TableExprGroupFuncBase.

virtual MArray<DComplex> casacore::TableExprGroupFirst::getArrayDComplex ( const vector< TableExprId > &  )
virtual

Reimplemented from casacore::TableExprGroupFuncBase.

virtual MArray<Double> casacore::TableExprGroupFirst::getArrayDouble ( const vector< TableExprId > &  )
virtual

Reimplemented from casacore::TableExprGroupFuncBase.

virtual MArray<Int64> casacore::TableExprGroupFirst::getArrayInt ( const vector< TableExprId > &  )
virtual

Reimplemented from casacore::TableExprGroupFuncBase.

virtual MArray<String> casacore::TableExprGroupFirst::getArrayString ( const vector< TableExprId > &  )
virtual

Reimplemented from casacore::TableExprGroupFuncBase.

virtual Bool casacore::TableExprGroupFirst::getBool ( const vector< TableExprId > &  )
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.

virtual MVTime casacore::TableExprGroupFirst::getDate ( const vector< TableExprId > &  )
virtual

Reimplemented from casacore::TableExprGroupFuncBase.

virtual DComplex casacore::TableExprGroupFirst::getDComplex ( const vector< TableExprId > &  )
virtual

Reimplemented from casacore::TableExprGroupFuncBase.

virtual Double casacore::TableExprGroupFirst::getDouble ( const vector< TableExprId > &  )
virtual

Reimplemented from casacore::TableExprGroupFuncBase.

virtual Int64 casacore::TableExprGroupFirst::getInt ( const vector< TableExprId > &  )
virtual

Reimplemented from casacore::TableExprGroupFuncBase.

virtual String casacore::TableExprGroupFirst::getString ( const vector< TableExprId > &  )
virtual

Reimplemented from casacore::TableExprGroupFuncBase.

Member Data Documentation

TableExprId casacore::TableExprGroupFirst::itsId
protected

Definition at line 304 of file ExprGroup.h.


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