This class represents the tuple stream delivered as the output of a trace clause in a
FLWOR expression. It does not change the values of any variables in the tuple stream,
but merely informs the TraceListener whenever a new tuple is requested.
All Methods Instance Methods Concrete Methods
Modifier and Type
Method and Description
Close the tuple stream, indicating that although not all tuples have been read,
no further tuples are required and resources can be released
( nextTuple XPathContext context)
Move on to the next tuple.
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
public boolean nextTuple(
Move on to the next tuple. Before returning, this method must set all the variables corresponding
to the "returned" tuple in the local stack frame associated with the context object
context - the dynamic evaluation context
Returns: true if another tuple has been generated; false if the tuple stream is exhausted. If the
method returns false, the values of the local variables corresponding to this tuple stream
- if any error occurs
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