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

[Charles Wilt <charles.wilt@xxxxxxxxx>]

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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