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CdbRooNTupleR< E > Class Template Reference

An abstract base class for persistent n-tuples. More...

Inheritance diagram for CdbRooNTupleR< E >:

List of all members.

Public Types
typedef E	ElementType
Public Member Functions
virtual UInt_t	rows () const=0
	Get the number of rows in the tuple.
virtual CdbStatus	get_row (std::vector< E > &theRow, const UInt_t theNumber) const=0
	Get a row at a specified position.
virtual CdbStatus	append_row (const std::vector< E > &theRow)=0
	Append a row by the end of an existing list.
	ClassDefT (CdbRooNTupleR< E >, 1)
Protected Member Functions
	CdbRooNTupleR ()
	Default constructor.
	CdbRooNTupleR (UInt_t theNumberOfColumns, const std::string &theName, const std::string &theDescription, const std::vector< std::string > &theColumnNames)
	Normal constructor.

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Detailed Description

template<class E>
class CdbRooNTupleR< E >

An abstract base class for persistent n-tuples.

This class adds a type safe interface of the n-tuple model by prividing a set of virtual methods to access or modify the contents of a tuple.

RESTRICTIONS:

(1) Rows are numbered beginning from 0.

(2) In all operations with rows, a row is defined through a STD vector of element type. The number of elements in the vector must be exactly the number of columns passed to the constructor.

Definition at line 23 of file CdbRooNTupleR.rdl.

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Member Typedef Documentation

template<class E> typedef E CdbRooNTupleR< E >::ElementType

Definition at line 27 of file CdbRooNTupleR.rdl.

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Constructor & Destructor Documentation

template<class E> CdbRooNTupleR< E >::CdbRooNTupleR (    )  [inline, protected]

Default constructor. Is useless, but it's required by the ROOT I/O streamers. Any attempts to use an object constructed in this way would result in the corresponding errors reported. Definition at line 36 of file CdbRooNTupleR.rdl.

template<class E> CdbRooNTupleR< E >::CdbRooNTupleR (  UInt_t    theNumberOfColumns, const std::string &    theName, const std::string &    theDescription, const std::vector< std::string > &    theColumnNames )  [inline, protected]

Normal constructor. See also: CdbRooNTupleBaseR::CdbRooNTupleBaseR() Definition at line 44 of file CdbRooNTupleR.rdl.

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Member Function Documentation

template<class E> virtual CdbStatus CdbRooNTupleR< E >::append_row (  const std::vector< E > &    theRow )  [pure virtual]

Append a row by the end of an existing list. This method has to be implemented by a subclass. Returns: the completion status of the operation Returned status values: CdbStatus::Success - successfull completion. The vector passed as a parameter will be filled exactly the same number of elements as the number of columns in the tuple. CdbStatus::IllegalParameters - an incomplete row with wrong number of elements passed to the method. The number of elements must match the number of columns. CdbStatus::* - any other problem occured preventing the successfull completion of the operation. The vector passed as a parameter won't be modified. Also see the RESTRICTIONS section at the defintion of the class for more detailed information on values of parameters. Implemented in CdbRooNTupleSimpleImplR< E >.

template<class E> CdbRooNTupleR< E >::ClassDefT (  CdbRooNTupleR< E >   , 1    )

template<class E> virtual CdbStatus CdbRooNTupleR< E >::get_row (  std::vector< E > &    theRow, const UInt_t    theNumber )  const [pure virtual]

Get a row at a specified position. This method has to be implemented by a subclass. Returns: the completion status of the operation Returned status values: CdbStatus::Success - successfull completion. The vector passed as a parameter will be filled exactly the same number of elements as the number of columns in the tuple. CdbStatus::NotFound - a row with specified number is not found. The vector passed as a parameter won't be modified. CdbStatus::* - any other problem occured preventing the successfull completion of the operation. The vector passed as a parameter won't be modified. Also see the RESTRICTIONS section at the defintion of the class for more detailed information on values of parameters. Implemented in CdbRooNTupleSimpleImplR< E >.

template<class E> virtual UInt_t CdbRooNTupleR< E >::rows (    )  const [pure virtual]

Get the number of rows in the tuple. Implemented in CdbRooNTupleSimpleImplR< E >.

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

• CdbRooNTupleR.rdl

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