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   BEA Tuxedo FML Function Reference

Fdel(), Fdel32() - delete field occurrence from buffer

#include stdio.h> 
#include "fml.h" 
int 
Fdel(FBFR *fbfr, FLDID fieldid, FLDOCC oc) 
#include "fml32.h" 
int 
Fdel32(FBFR32 *fbfr, FLDID32 fieldid, FLDOCC32 oc)

Fdel() deletes the specified field occurrence from the buffer. fbfr is a pointer to a fielded buffer. fieldid is a field identifier. oc is the occurrence number of the field.

Note that when multiple occurrences of a field exist in the fielded buffer and a field occurrence is deleted that is not the last occurrence, also higher occurrences in the buffer are shifted down by one. To maintain the same occurrence number for all occurrences, use Fchg() to set the field occurrence value to a NULL value.

For values of type FLD_PTR, Fdel32() deletes the FLD_PTR field occurrence without changing the referenced buffer or freeing the pointer. The data buffer is treated as an opaque pointer.

Fdel32() is used with 32-bit FML.

A thread in a multithreaded application may issue a call to Fdel() or Fdel32() while running in any context state, including TPINVALIDCONTEXT.

This function returns -1 on error and sets Ferror to indicate the error condition.

Under the following conditions, Fdel() fails and sets Ferror to:

[FALIGNERR]

"fielded buffer not aligned"
The buffer does not begin on the proper boundary.

[FNOTFLD]

"buffer not fielded"
The buffer is not a fielded buffer or has not been initialized by Finit().

[FNOTPRES]

"field not present"
A field occurrence is requested but the specified field and/or occurrence was not found in the fielded buffer.

[FBADFLD]

"unknown field number or type"
A field identifier is specified which is not valid.

Introduction to FML Functions, Fadd, Fadd32(3fml), Fchg, Fchg32(3fml), Fdelall, Fdelall32(3fml), Fdelete, Fdelete32(3fml)