TDbSeekKey Class Reference
Database key value.
The class encapsulates a key value which is passed to RDbTable::SeekL(), for lookup in the currently active index on that rowset.
An instance of this class can store a key value of any type.
Note that the class can only hold a single-column key. Use TDbSeekMultiKey for multi-column keys.
TDbSeekMultiKey RDbTable
Constructor & Destructor Documentation
TDbSeekKey()
Constructs an empty key value.
Add() should be called before the key value is used for lookup.
TDbSeekKey(TInt)
| TDbSeekKey | ( | TInt | aKey | ) | [inline] |
Constructs a key value for an TInt8, TInt16 or TInt32 column.
Parameters
| TInt aKey | The key value to lookup. |
TDbSeekKey(TUint)
| TDbSeekKey | ( | TUint | aKey | ) | [inline] |
Constructs a key value for a Bit, TUint8, TUint16 or TUint32 column.
Parameters
| TUint aKey | The key value to lookup. |
TDbSeekKey(TInt64)
| TDbSeekKey | ( | TInt64 | aKey | ) | [inline] |
TDbSeekKey(TReal32)
Constructs a key value for a TReal32 column.
Parameters
| TReal32 aKey | The key value to lookup. |
TDbSeekKey(TReal64)
Construct a key value for a TReal64 column.
Parameters
| TReal64 aKey | The key value to lookup. |
TDbSeekKey(TTime)
| TDbSeekKey | ( | TTime | aKey | ) | [inline] |
Constructs a key value for a TDateTime column.
Parameters
| TTime aKey | The key value to lookup. |
TDbSeekKey(const TDesC8 &)
| TDbSeekKey | ( | const TDesC8 & | aKey | ) | [inline] |
Constructs a key value for a non-Unicode text column.
Note that the seek key does not copy the text data contained by the descriptor. This needs to be retained until the seek key is no longer required.
Parameters
| const TDesC8 & aKey | The key value to lookup. |
TDbSeekKey(const TDesC16 &)
| TDbSeekKey | ( | const TDesC16 & | aKey | ) | [inline] |
Constructs a key value for a Unicode text column.
Note that the seek key does not copy the text data contained by the descriptor. This needs to be retained until the seek key is no longer required.
Parameters
| const TDesC16 & aKey | The key value to lookup. |
TDbSeekKey(TInt, TInt)
| TDbSeekKey | ( | TInt | aKeys, |
| | TInt | |
| | ) | [protected, inline] |
Member Functions Documentation
Add(TInt)
Appends a key value for an TInt8, TInt16 or TInt32 column.
Parameters
| TInt aKey | The key value to lookup. |
Member Data Documentation
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