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dal.start.business.method()
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By patvdv at 26 Feb 2008 - 21:57
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dal.start.business.method()
Syntax
void
dal.start.business.method( long|string set_id, string
name, ref long retval [, arg]... )
Description
This starts a specified business method.
The business method must be implemented as a function of type EXTERN LONG. If this is the first call to a particular class (that is, table), the before.open.object.set() hook is automatically called before the business method is called.
Arguments
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set_id
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Indicates the name of the DAL that implements the business method. The set_id argument can be a long (use in external programs) or a string (use in UI scripts).
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name
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The name of the business method.
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retval
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The return value.
Negative values are reserved for the calling mechanism. For example:
-1 DALNOOBJSET
-2 DALNOMETHOD
The business method may return only DALHOOKERROR, 0, or positive numbers.
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arg
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Use these optional arguments to pass arguments to the business method.
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Context
DAL function.
Example
dal.start.business.method("cfcmd100", "print.object.set", ret, feature.f, feature.t)
function extern long print.object.set(
domain cfcmd.feat feature.f,
domain cfcmd.feat feature.t),
{
domain dcbool show.pi
show.pi = tcmcs.dll0011.show.progress.indicator()
if show.pi then
init.progress.indicator(feature.f, feature.t)
endif
select cfcmd100.*
from cfcmd100
where cfcmd100.feat inrange :feature.f and :feature.t
order by cfcmd100._index1
selectdo
if show.pi then
|* calculate progress percentage
prgi.val = prgi.val + prgi.stp
if prgi.tot > 0 then
prgi.prc = (prgi.val / prgi.tot) * 100
endif
if change.progress.indicator(prgi.prc) then
|* user pressed cancel/stop button
return(0)
endif
endif
prnt.data = "cfcmd110"
print.record(1)
endselect
return(0)
}
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