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64 lines
2.9 KiB
64 lines
2.9 KiB
//============== DAE: OS/2 Database Access Engine ===================
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//============== idb.h: Index Descriptor Block ===================
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// Flags for IDB
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#define fidbUnique (1<<0) // Duplicate keys not allowed
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#define fidbHasTagged (1<<1) // Has a tagged segment
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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 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 IDBSetHasTagged( pidb ) ( (pidb)->fidb |= fidbHasTagged )
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#define IDBResetHasTagged( pidb ) ( (pidb)->fidb &= ~fidbHasTagged )
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#define FIDBHasTagged( pidb ) ( (pidb)->fidb & fidbHasTagged )
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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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// Index Descriptor Block: information about index key
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struct _idb
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{
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IDXSEG rgidxseg[JET_ccolKeyMost];
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BYTE rgbitIdx[32];
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LANGID langid; // language of index
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CHAR szName[JET_cbNameMost + 1];
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BYTE iidxsegMac;
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BYTE fidb;
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BYTE rgbFiller[2];
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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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