#include <D32DBMS.H>
Link against:
edbms.lib
class TDbSeekKey;
Description
Database key value.
The class encapsulates a key value which is passed to RDbTable::SeekL(const TDbSeekKey &,TComparison), 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.
Members
Defined in TDbSeekKey:
See also:
TDbSeekMultiKeyDatabase multi-column key value.RDbTableProvides access to table data as a rowset, allowing manipulation of a named tabl...
Construction and destruction
inline TDbSeekKey();
Description
Constructs an empty key value.
TDbSeekKey::Add(TInt) should be called before the key value is used for lookup.
inline TDbSeekKey(TInt aKey);
Description
Constructs a key value for an TInt8, TInt16 or TInt32 column.
Parameters
TInt aKey |
The key value to lookup.
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inline TDbSeekKey(TUint aKey);
Description
Constructs a key value for a Bit, TUint8, TUint16 or TUint32 column.
Parameters
TUint aKey |
The key value to lookup.
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inline TDbSeekKey(TInt64 aKey);
Description
Parameters
inline TDbSeekKey(TReal32 aKey);
Description
Constructs a key value for a TReal32 column.
Parameters
TReal32 aKey |
The key value to lookup.
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inline TDbSeekKey(TReal64 aKey);
Description
Construct a key value for a TReal64 column.
Parameters
TReal64 aKey |
The key value to lookup.
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inline TDbSeekKey(TTime aKey);
Description
Constructs a key value for a TDateTime column.
Parameters
TTime aKey |
The key value to lookup.
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TDbSeekKey(const TDesC8 &)
inline TDbSeekKey(const TDesC8 &aKey);
Description
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.
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TDbSeekKey(const TDesC16 &)
inline TDbSeekKey(const TDesC16 &aKey);
Description
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.
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protected: inline TDbSeekKey(TInt aKeys, TInt);
Description
Parameters
IMPORT_C TDbSeekKey& Add(TInt aKey);
Description
Appends a key value for an TInt8, TInt16 or TInt32 column.
Parameters
TInt aKey |
The key value to lookup.
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Return value
TDbSeekKey & |
A reference to this database key value object.
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IMPORT_C TDbSeekKey& Add(TUint aKey);
Description
Appends a key value for a Bit, TUint8, TUint16 or TUint32 column.
Parameters
TUint aKey |
The key value to lookup.
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Return value
TDbSeekKey & |
A reference to this database key value object.
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IMPORT_C TDbSeekKey& Add(TInt64 aKey);
Description
Appends a key value for an TInt64 column.
Parameters
TInt64 aKey |
The key value to lookup.
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Return value
TDbSeekKey & |
A reference to this database key value object.
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IMPORT_C TDbSeekKey& Add(TReal32 aKey);
Description
Appends a key value for a TReal32 column.
Parameters
TReal32 aKey |
The key value to lookup.
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Return value
TDbSeekKey & |
A reference to this database key value object.
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IMPORT_C TDbSeekKey& Add(TReal64 aKey);
Description
Appends a key value for a TReal64 column.
Parameters
TReal64 aKey |
The key value to lookup.
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Return value
TDbSeekKey & |
A reference to this database key value object.
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IMPORT_C TDbSeekKey& Add(TTime aKey);
Description
Appends a key value for a DateTime column.
Parameters
TTime aKey |
The key value to lookup. TTime may be either local time or universal time. DBMS doesn't interpret the value of TTime, it is left up to the user to decide which should be used.
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Return value
TDbSeekKey & |
A reference to this database key value object.
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IMPORT_C TDbSeekKey& Add(const TDesC8 &aKey);
Description
Appends 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.
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Return value
TDbSeekKey & |
A reference to this database key value object.
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IMPORT_C TDbSeekKey& Add(const TDesC16 &aKey);
Description
Appends 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.
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Return value
TDbSeekKey & |
A reference to this database key value object.
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