Class TDbColSetIter

class TDbColSetIter;

Description

Provides a useful way to iterate over the contents of a column set.

Members

Defined in TDbColSetIter:

• Col()constReturns a column ordinal in the set for the currently referenced column definiti...
• TDbColSetIter(const CDbColSet &)Constructs a column set iterator over a column set. The iterator now references ...
• operator *()constDereferences the iterator on the current column definition.
• operator TAny *()const
• operator++()Moves the iterator to the next column in the set -- post increment operator.
• operator++(TInt)Moves the iterator to the next column in the set post increment operator.
• operator->()constGets a member of the currently referenced column definition. This enables the us...

IMPORT_C TDbColSetIter(const CDbColSet &aColSet);

Description

Constructs a column set iterator over a column set. The iterator now references the first column in the set.

Parameters

inline operator TAny *() const;

Description

Return value

inline const TDbCol& operator *() const;

Description

Dereferences the iterator on the current column definition.

Return value

inline const TDbCol* operator->() const;

Description

Gets a member of the currently referenced column definition. This enables the use of the following constructs:

if (iter->iType==EDbColText && iter->iMaxLength<50)

Return value

IMPORT_C TDbColSetIter& operator++();

Description

Moves the iterator to the next column in the set -- post increment operator.

Note that this is implemented in terms of the pre-increment operator, and is less efficient.

Return value

inline TDbColSetIter operator++(TInt);

Description

Moves the iterator to the next column in the set post increment operator.

Note that this is implemented in terms of the pre-increment operator, and is less efficient.

Parameters

Return value

inline TDbColNo Col() const;

Description

Returns a column ordinal in the set for the currently referenced column definition.

Return value