TDbSeekKey Class Reference

class TDbSeekKey

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

Public Member Functions
TDbSeekKey()
TDbSeekKey(TInt)
TDbSeekKey(TUint)
TDbSeekKey(TInt64)
TDbSeekKey(TReal32)
TDbSeekKey(TReal64)
TDbSeekKey(TTime)
TDbSeekKey(const TDesC8 &)
TDbSeekKey(const TDesC16 &)
IMPORT_C TDbSeekKey &Add(TInt)
IMPORT_C TDbSeekKey &Add(TUint)
IMPORT_C TDbSeekKey &Add(TInt64)
IMPORT_C TDbSeekKey &Add(TReal32)
IMPORT_C TDbSeekKey &Add(TReal64)
IMPORT_C TDbSeekKey &Add(TTime)
IMPORT_C TDbSeekKey &Add(const TDesC8 &)
IMPORT_C TDbSeekKey &Add(const TDesC16 &)
Protected Member Functions
TDbSeekKey(TInt, TInt)
Private Member Functions
TDbLookupKey &Check()
Private Attributes
TDbLookupKey iKey
TInt iMaxKeys

Constructor & Destructor Documentation

TDbSeekKey()

TDbSeekKey()[inline]

Constructs an empty key value.

Add() should be called before the key value is used for lookup.

TDbSeekKey(TInt)

TDbSeekKey(TIntaKey)[inline]

Constructs a key value for an TInt8, TInt16 or TInt32 column.

Parameters

TInt aKeyThe key value to lookup.

TDbSeekKey(TUint)

TDbSeekKey(TUintaKey)[inline]

Constructs a key value for a Bit, TUint8, TUint16 or TUint32 column.

Parameters

TUint aKeyThe key value to lookup.

TDbSeekKey(TInt64)

TDbSeekKey(TInt64aKey)[inline]

Parameters

TInt64 aKey

TDbSeekKey(TReal32)

TDbSeekKey(TReal32aKey)[inline]

Constructs a key value for a TReal32 column.

Parameters

TReal32 aKeyThe key value to lookup.

TDbSeekKey(TReal64)

TDbSeekKey(TReal64aKey)[inline]

Construct a key value for a TReal64 column.

Parameters

TReal64 aKeyThe key value to lookup.

TDbSeekKey(TTime)

TDbSeekKey(TTimeaKey)[inline]

Constructs a key value for a TDateTime column.

Parameters

TTime aKeyThe 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 & aKeyThe 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 & aKeyThe key value to lookup.

TDbSeekKey(TInt, TInt)

TDbSeekKey(TIntaKeys,
TInt
)[protected, inline]

Parameters

TInt aKeys
TInt

Member Functions Documentation

Add(TInt)

IMPORT_C TDbSeekKey &Add(TIntaKey)

Parameters

TInt aKey

Add(TUint)

IMPORT_C TDbSeekKey &Add(TUintaKey)

Parameters

TUint aKey

Add(TInt64)

IMPORT_C TDbSeekKey &Add(TInt64aKey)

Parameters

TInt64 aKey

Add(TReal32)

IMPORT_C TDbSeekKey &Add(TReal32aKey)

Parameters

TReal32 aKey

Add(TReal64)

IMPORT_C TDbSeekKey &Add(TReal64aKey)

Parameters

TReal64 aKey

Add(TTime)

IMPORT_C TDbSeekKey &Add(TTimeaKey)

Parameters

TTime aKey

Add(const TDesC8 &)

IMPORT_C TDbSeekKey &Add(const TDesC8 &aKey)

Parameters

const TDesC8 & aKey

Add(const TDesC16 &)

IMPORT_C TDbSeekKey &Add(const TDesC16 &aKey)

Parameters

const TDesC16 & aKey

Check()

TDbLookupKey &Check()[private]

Member Data Documentation

TDbLookupKey iKey

TDbLookupKey iKey[private]

TInt iMaxKeys

TInt iMaxKeys[private]