net.sf.saxon.expr.flwor
Class WhereClausePush
java.lang.Object
net.sf.saxon.expr.flwor.TuplePush
net.sf.saxon.expr.flwor.WhereClausePush
public class WhereClausePush
- extends TuplePush
This class represents the tuple stream delivered as the output of a where clause in a
FLWOR expression: that is, it supplies all the tuples in its input stream that satisfy
a specified predicate. It does not change the values of any variables in the tuple stream.
Method Summary |
void |
close()
Close the tuple stream, indicating that no more tuples will be supplied |
void |
processTuple(XPathContext context)
Notify the availability of the next tuple. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
WhereClausePush
public WhereClausePush(TuplePush destination,
Expression predicate)
processTuple
public void processTuple(XPathContext context)
throws XPathException
- Description copied from class:
TuplePush
- Notify the availability of the next tuple. Before calling this method,
the supplier of the tuples must set all the variables corresponding
to the supplied tuple in the local stack frame associated with the context object
- Specified by:
processTuple
in class TuplePush
- Parameters:
context
- the dynamic evaluation context
- Throws:
XPathException
- if a dynamic error occurs
close
public void close()
throws XPathException
- Description copied from class:
TuplePush
- Close the tuple stream, indicating that no more tuples will be supplied
- Overrides:
close
in class TuplePush
- Throws:
XPathException
- if a dynamic error occurs
Copyright (c) 2004-2011 Saxonica Limited. All rights reserved.