com.saxonica.stream.adjunct
Class LetExpressionAdjunct
java.lang.Object
com.saxonica.stream.adjunct.StreamingAdjunct
com.saxonica.stream.adjunct.LetExpressionAdjunct
public class LetExpressionAdjunct
- extends StreamingAdjunct
Compiles streaming code to implement a Let expression
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
LetExpressionAdjunct
public LetExpressionAdjunct()
getWatchMaker
public WatchMaker getWatchMaker(Expression expression,
List<String> reasonsForFailure)
throws XPathException
- Description copied from class:
StreamingAdjunct
- 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
Expression.WATCH_METHOD
- Overrides:
getWatchMaker
in class StreamingAdjunct
- Parameters:
expression
- the expression to be evaluated in streaming modereasonsForFailure
- 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.
- Returns:
- a Watchmaker to evaluate the expression, or null if it is not streamable with respect
to the specificed argument.
- Throws:
XPathException
Copyright (c) 2004-2011 Saxonica Limited. All rights reserved.