BBjRecordSet::isEmpty

Description

In BBj 4.0 and higher, this method whether a BBjRecordSet is empty (contains no BBjRecordData objects).

Syntax

Return Value

Method

boolean

isEmpty()

Parameters

None.

Return Value

0 = Contains at least one BBjRecordData object

1 = Empty BBjRecordSet

Remarks

None.

Example

REM ' Find if a RecordSet is empty (contains no RecordData objects)

REM ' First, create a data file
FILENAME$="BBjRecordSet.dat"
MODES$=""
TEMPLATE$="STATE:C(2),NAME:C(16*=)"
erase FILENAME$,err=*next
mkeyed FILENAME$,[0:1:2],0,32
channel=unt
open (channel)FILENAME$
dim REC$:TEMPLATE$

REM ' Load the file with state codes and names
while 1
dread rec.state$,rec.name$,END=*break
write record (channel)rec$
wend
close (channel)

REM ' Create a file-based BBjRecordSet
RecordSet! = BBJAPI().createFileRecordSet(FILENAME$,MODES$,TEMPLATE$)

recordset!.first()
while !(recordset!.isEmpty())
   print "Removed record: ",recordset!.getCurrentRecordData().getFieldValue("state")
   RecordSet!.deleteCurrentRecordData()
wend

stop

DATA "AK","Alaska"
DATA "AL","Alabama"
DATA "AR","Arkansas"
DATA "AZ","Arizona"
DATA "CA","California"
DATA "CO","Colorado"
DATA "CT","Connecticut"
DATA "DC","District of Columbia"
DATA "DE","Delaware"
DATA "FL","Florida"
DATA "GA","Georgia"
DATA "GU","Guam"
DATA "HI","Hawaii"
DATA "IA","Iowa"
DATA "ID","Idaho"
DATA "IL","Illinois"
DATA "IN","Indiana"
DATA "KS","Kansas"
DATA "KY","Kentucky"
DATA "LA","Louisiana"
DATA "MA","Massachusetts"
DATA "MD","Maryland"
DATA "ME","Maine"
DATA "MI","Michigan"
DATA "MN","Minnesota"
DATA "MO","Missouri"
DATA "MS","Mississippi"
DATA "MT","Montana"
DATA "NC","North Carolina"
DATA "ND","North Dakota"
DATA "NE","Nebraska"
DATA "NH","New Hampshire"
DATA "NJ","New Jersey"
DATA "NM","New Mexico"
DATA "NV","Nevada"
DATA "NY","New York"
DATA "OH","Ohio"
DATA "OK","Oklahoma"
DATA "OR","Oregon"
DATA "PA","Pennsylvania"
DATA "PR","Puerto Rico"
DATA "RI","Rhode Island"
DATA "SC","South Carolina"
DATA "SD","South Dakota"
DATA "TN","Tennessee"
DATA "TX","Texas"
DATA "UT","Utah"
DATA "VA","Virginia"
DATA "VI","Virgin Islands"
DATA "VT","Vermont"
DATA "WA","Washington"
DATA "WI","Wisconsin"
DATA "WV","West Virginia"
DATA "WY","Wyoming"

See Also

BBjAPI

See the BBj Object Diagram for an illustration of the relationship between BBj Objects.



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