Developing Apama Applications > Apama EPL Reference > Lexical Elements > Keywords > List of identifiers reserved for future use
List of identifiers reserved for future use
EPL might use the identifiers listed in the table below as keywords in a future release. In this release, if you use one of these reserved words, the correlator logs a warning.
List of reserved identifiers
In this table, some identifiers are flagged with as asterisk (*). These identifiers are reserved as keywords only within stream queries. That is, the correlator logs a warning only if you use this identifier inside a stream query. To use one of these identifiers inside a stream query without logging a warning, prefix it with a hash symbol (#). See Escaping keywords to use them as identifiers.
Identifiers reserved for future use
abstract
ALL *
AND *
assert
bignum
BY *
byte
case
char
class
default
enum
EQUALS *
eval
EVERY *
except
extends
FALSE *
finally
FROM
GROUP *
HAVING
immutable
implements
IN *
instanceof
interface
join
JOIN
LARGEST *
native
NOT *
null
OR *
otherwise
PARTITION *
private
protected
public
RETAIN *
RSTREAM *
runtime
SELECT *
SMALLEST *
sortedsequence
switch
sync
SYNC *
synchronized
table
throws
transient
TRUE *
UNIQUE *
void
volatile
WHERE *
window
WITH *
WITHIN *
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