Re: Reading records by key using C runtime record i/o functions

Oops, you are right! Not sure of those were added or if I've been doing it incorrectly/(the hard way) all this time. Hmmm... I think I'd still stick with _rreadn() though since you are doing partial key. Meaning, if you're looking for names that start with SM for example, seems to me that _rreadn() is the correct answer.
++
Dennis
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There will be a rain dance Friday, weather permitting




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"Charles Wilt" <charles.wilt@xxxxxxxxx> wrote:

Dennis,

Not sure that's true....at least given how I understand the
docs...._rreadk offers the __KEY_NEXTEQ parm value:
__KEY_NEXTEQ
Positions to and reads the next record that has a key equal to the
key value at the current position. The key parameter is ignored.

http://publib.boulder.ibm.com/infocenter/iadthelp/v7r0/topic/com.ibm.etools.iseries.langref.doc/rzan5mst224.htm#HDRRREADK

Thus it seems to me that _rreadk could be used in place of an RPG
READE or an RPG CHAIN, but I'm trying to confirm.

Charles

On Mon, Nov 14, 2011 at 1:32 PM, Dennis <iseries@xxxxxxxxxxxx> wrote:

You want _rreadn()

Http://publib.boulder.ibm.com/infocenter/iadthelp/v7r0/index.jsp?topic=/com.ibm.etools.iseries.langref.doc/rzan5mst225.html
- search for _rreadn.  _rreadk does not honor the current cursor
position, although you could kinda-sorta emulate that (assuming there
is some uniqueness).

++
Dennis
++


Sent from my Galaxy tablet phone.  Please excuse my brevity.
For any grammatic/spelling errors, there is no excuse.
++


"Charles Wilt" <charles.wilt@xxxxxxxxx> wrote:

All,

Little confused...(and I haven't been gone that long! )

_ropen() to open a record file
_rlocate() to position to a particular key (SETLL?)
_rreadk() to read by key  (CHAIN or READE?)
_rreadm() to read next (READ?)

if I want to read a set of records with a certain key, do I need to
call _rlocate() followed by _rreadK() in a loop or can I use
_rreadn()?

Not I'll be dealing with a partial key...

Thanks!
Charles
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