/usr/include/postgres-xc/server/utils/datum.h is in postgres-xc-server-dev 1.1-2ubuntu2.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 | /*-------------------------------------------------------------------------
*
* datum.h
* POSTGRES Datum (abstract data type) manipulation routines.
*
* These routines are driven by the 'typbyval' and 'typlen' information,
* which must previously have been obtained by the caller for the datatype
* of the Datum. (We do it this way because in most situations the caller
* can look up the info just once and use it for many per-datum operations.)
*
* Portions Copyright (c) 1996-2012, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* src/include/utils/datum.h
*
*-------------------------------------------------------------------------
*/
#ifndef DATUM_H
#define DATUM_H
/*
* datumGetSize - find the "real" length of a datum
*/
extern Size datumGetSize(Datum value, bool typByVal, int typLen);
/*
* datumCopy - make a copy of a datum.
*
* If the datatype is pass-by-reference, memory is obtained with palloc().
*/
extern Datum datumCopy(Datum value, bool typByVal, int typLen);
/*
* datumFree - free a datum previously allocated by datumCopy, if any.
*
* Does nothing if datatype is pass-by-value.
*/
extern void datumFree(Datum value, bool typByVal, int typLen);
/*
* datumIsEqual
* return true if two datums of the same type are equal, false otherwise.
*
* XXX : See comments in the code for restrictions!
*/
extern bool datumIsEqual(Datum value1, Datum value2,
bool typByVal, int typLen);
#endif /* DATUM_H */
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