public class ExistsAdjunct
- extends StreamingAdjunct
Generate streaming code for an exists() function call
|Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
public WatchMaker getWatchMaker(Expression expression,
- Description copied from class:
- Get a WatchMaker, a factory class that creates a Watch to evaluate this expression
in streaming mode. This method will only be called if the getImplementationMethod()
method of the expression includes the value
getWatchMaker in class
expression - the expression to be evaluated in streaming mode
reasonsForFailure - if non-null, this is a list supplied by the caller which will be populated
by the callee with one or more messages indicating why it was not possible to allocate a WatchMaker.
Normally if the list is non-empty on return, the return value from the method will be null.
- a Watchmaker to evaluate the expression, or null if it is not streamable with respect
to the specificed argument.
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