Package net.sf.saxon.expr.flwor
Class ReturnClausePush
- java.lang.Object
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- net.sf.saxon.expr.flwor.TuplePush
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- net.sf.saxon.expr.flwor.ReturnClausePush
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public class ReturnClausePush extends TuplePush
The class represents the final stage in a push-mode tuple pipeline. The previous stages have stored the values corresponding to the current tuple in local variables on the stack; all that remains is to evaluate the return expression (with reference to these variables) and send the results to the current receiver.
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Constructor Summary
Constructors Constructor Description ReturnClausePush(Outputter outputter, Expression returnExpr)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description void
close()
Close the tuple stream, indicating that no more tuples will be suppliedvoid
processTuple(XPathContext context)
Notify the availability of the next tuple.-
Methods inherited from class net.sf.saxon.expr.flwor.TuplePush
getOutputter
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Constructor Detail
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ReturnClausePush
public ReturnClausePush(Outputter outputter, Expression returnExpr)
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Method Detail
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processTuple
public void processTuple(XPathContext context) throws XPathException
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 classTuplePush
- Parameters:
context
- the dynamic evaluation context- Throws:
XPathException
- if a dynamic error occurs
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close
public void close() throws XPathException
Close the tuple stream, indicating that no more tuples will be supplied- Overrides:
close
in classTuplePush
- Throws:
XPathException
- if a dynamic error occurs
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