48 lines
1.7 KiB
C
48 lines
1.7 KiB
C
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//============== DAE: OS/2 Database Access Engine ===================
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//============== fdb.h: Field Descriptor Block ===================
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// Flags for field descriptor
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#define ffieldNotNull (1<<0) // NULL values not allowed
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#define ffieldDeleted (1<<1) // Fixed field has been deleted
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#define ffieldVersion (1<<2) // Version field
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#define ffieldAutoInc (1<<3) // Auto increment field
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#define ffieldMultivalue (1<<4) // Multi-valued column
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#ifdef ANGEL
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#pragma pack(4)
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#endif
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// Entry in field descriptor tables found in an FDB.
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typedef struct _field
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{
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JET_COLTYP coltyp; // column data type
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LANGID langid; // language of field
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WORD wCountry; // country of language
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USHORT cp; // code page of language
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ULONG cbMaxLen; // maximum length
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BYTE ffield; // various flags
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CHAR szFieldName[JET_cbNameMost + 1]; // name of field
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} FIELD;
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// Field Descriptor Block: information about all fields of a file.
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struct _fdb
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{
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FID fidVersion; // fid of version field
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FID fidAutoInc; // fid of auto increment field
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FID fidFixedLast; // Highest fixed field id in use
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FID fidVarLast; // Highest variable field id in use
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FID fidTaggedLast; // Highest tagged field id in use
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LINE lineDefaultRecord; // default record
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struct _field *pfieldFixed; // if FCB of data: pointers to
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struct _field *pfieldVar; // beginnings fixed, variable, and
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struct _field *pfieldTagged; // tagged field tables
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WORD *pibFixedOffsets; // pointer to beginning of table
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// of fixed field offsets
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struct _field rgfield[]; // FIELD structures hang off the end
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// WORD rgibFixedOffsets[]; // followed by the offset table
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};
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#ifdef ANGEL
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#pragma pack()
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#endif
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