Product Documentation

FairCom ISAM for C

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GetVRecord

Read the variable-length record with a key equal to target.

Short Name

EQLVREC()

Type

ISAM function

Declaration

COUNT GetVRecord(FILNO keyno, pVOID target, pVOID recptr, pVRLEN plen)

Description

In V12 the file number typedef was formally changed from COUNT, a two-byte value to FILNO, a four-byte value. Refer to this link for compatibility details. Four Byte File Numbering

GetVRecord() is the same as its fixed-length counterpart, GetRecord(), except one argument has been added: plen.

plen acts as both an input and output parameter:

  • On input, plen contains the length of the output buffer.
  • On output, the contents of plen is the actual data-record length. If the length of the output buffer is less than the actual record length, a partial read is performed. If an error occurs, plen is unspecified.

Read the function description for GetRecord() for additional important information.

Return

Value

Symbolic Constant

Explanation

0

NO_ERROR

Successful retrieval of current ISAM record.

633

NPLN_ERR

recptr is NULL. No data file read performed.

See c-tree Error Codes for a complete listing of valid c-tree error values.

See also

GetRecord(), GetGTEVRecord(), GetGTVRecord(), GetLTEVRecord(), TransformKey()

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