KeyEQ (Dataset function)

KeyEQ returns a Boolean enumeration to indicate whether the specified key was found within the Dataset object. If true, the object is positioned to that record.

This function sets the read position of a VSAM dataset to the record key specified. A subsequent read of the Dataset object will return the specified record.

Syntax

Syntax terms

%boolean	An enumeration object of type Boolean to contain the returned value of AmDaemon. AmDaemon returns True if issued on a Daemon-associated thread; otherwise it returns False.

%boolean	A Boolean enumeration value
key	A key object.

Syntax terms

%boolean	An enumeration object of type Boolean to contain the result of the positioning of the dataset object to key key . KeyEQ returns True if the specified key is found; otherwise it returns False.
Key	The value used to position the Dataset object.

Usage notes

• The default for Key is nulls. Setting the value to nulls will cause reads to begin from the first record.
.

Examples

ALLOCATE DATASET VSAMALT WITH SCOPE=SYSTEM DSN=RDP.VSAM.AIX - VSAM KEYED OLD SHARE ALLOCATE DATASET VSAMDS WITH SCOPE=SYSTEM DSN=RDP.VSAM - VSAM KEYED OLD SHARE Begin %l is longstring %ds is object dataset %ds = new('VSAMALT') if %ds:open then print "Error opening dataset" stop end if %key is string len 4 initial('AAAA') print %ds:keyeq(%key) %l = %ds:readRecord %ds:close %ds = new('VSAMDS') if %ds:open then print "Error opening dataset" stop end if print %ds:keyge(%l:Substring(10,8)) repeat forever %l = %ds:readRecord if %ds:state eq afterEnd then print 'end of rec' loop end end if print %l end repeat %ds:close End FREE VSAMALT FREE VSAMDS