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77 lines
3.6 KiB
77 lines
3.6 KiB
// Flags for IDB
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#define fidbUnique (1<<0) // Duplicate keys not allowed
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#define fidbAllowAllNulls (1<<2) // Make entries for NULL keys (all segments are null)
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#define fidbAllowSomeNulls (1<<3) // Make entries for keys with some null segments
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#define fidbNoNullSeg (1<<4) // Don't allow a NULL key segment
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#define fidbPrimary (1<<5) // Index is the primary index
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#define fidbLangid (1<<6) // Index langid
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#define fidbHasMultivalue (1<<7) // Has a multivalued segment
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#define fidbAllowFirstNull (1<<8) // First index column NULL allowed in index
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#define fidbClustered (1<<9) // Clustered index
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#define IDBSetUnique( pidb ) ( (pidb)->fidb |= fidbUnique )
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#define IDBResetUnique( pidb ) ( (pidb)->fidb &= ~fidbUnique )
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#define FIDBUnique( pidb ) ( (pidb)->fidb & fidbUnique )
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#define IDBSetAllowAllNulls( pidb ) ( (pidb)->fidb |= fidbAllowAllNulls )
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#define IDBResetAllowAllNulls( pidb ) ( (pidb)->fidb &= ~fidbAllowAllNulls )
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#define FIDBAllowAllNulls( pidb ) ( (pidb)->fidb & fidbAllowAllNulls )
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#define IDBSetAllowSomeNulls( pidb ) ( (pidb)->fidb |= fidbAllowSomeNulls )
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#define IDBResetAllowSomeNulls( pidb ) ( (pidb)->fidb &= ~fidbAllowSomeNulls )
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#define FIDBAllowSomeNulls( pidb ) ( (pidb)->fidb & fidbAllowSomeNulls )
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#define IDBSetNoNullSeg( pidb ) ( (pidb)->fidb |= fidbNoNullSeg )
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#define IDBResetNoNullSeg( pidb ) ( (pidb)->fidb &= ~fidbNoNullSeg )
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#define FIDBNoNullSeg( pidb ) ( (pidb)->fidb & fidbNoNullSeg )
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#define IDBSetPrimary( pidb ) ( (pidb)->fidb |= fidbPrimary )
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#define IDBResetPrimary( pidb ) ( (pidb)->fidb &= ~fidbPrimary )
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#define FIDBPrimary( pidb ) ( (pidb)->fidb & fidbPrimary )
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#define IDBSetLangid( pidb ) ( (pidb)->fidb |= fidbLangid )
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#define IDBResetLangid( pidb ) ( (pidb)->fidb &= ~fidbLangid )
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#define FIDBLangid( pidb ) ( (pidb)->fidb & fidbLangid )
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#define IDBSetMultivalued( pidb ) ( (pidb)->fidb |= fidbMultivalued )
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#define IDBResetMultivalued( pidb ) ( (pidb)->fidb &= ~fidbMultivalued )
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#define FIDBMultivalued( pidb ) ( (pidb)->fidb & fidbMultivalued )
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#define IDBSetAllowFirstNull( pidb ) ( (pidb)->fidb |= fidbAllowFirstNull )
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#define IDBResetAllowFirstNull( pidb ) ( (pidb)->fidb &= ~fidbAllowFirstNull )
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#define FIDBAllowFirstNull( pidb ) ( (pidb)->fidb & fidbAllowFirstNull )
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#define IDBSetClustered( pidb ) ( (pidb)->fidb |= fidbClustered )
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#define IDBResetClustered( pidb ) ( (pidb)->fidb &= ~fidbClustered )
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#define FIDBClustered( pidb ) ( (pidb)->fidb & fidbClustered )
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/* Index Descriptor Block: information about index key
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/**/
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struct _idb
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{
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BYTE rgbitIdx[32]; // bit array for index columns
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CHAR szName[JET_cbNameMost + 1]; // index name
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BYTE cbVarSegMac; // maximum variable segment size
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SHORT fidb; // index flags
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IDXSEG rgidxseg[JET_ccolKeyMost]; // array of columnid for index
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LANGID langid; // language of index
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SHORT iidxsegMac; // number of columns in index
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};
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STATIC INLINE VOID IDBSetColumnIndex( IDB * pidb, FID fid )
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{
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pidb->rgbitIdx[IbFromFid( fid )] |= IbitFromFid( fid );
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}
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STATIC INLINE BOOL FIDBColumnIndex( const IDB * pidb, FID fid )
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{
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return (pidb->rgbitIdx[IbFromFid( fid )] & IbitFromFid( fid ) );
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}
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#define PidbMEMAlloc() (IDB*)PbMEMAlloc(iresIDB)
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#ifdef DEBUG /* Debug check for illegal use of freed idb */
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#define MEMReleasePidb( pidb ) { MEMRelease( iresIDB, (BYTE*)(pidb) ); pidb = pidbNil; }
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#else
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#define MEMReleasePidb( pidb ) { MEMRelease( iresIDB, (BYTE*)(pidb) ); }
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#endif
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