Package net.sf.saxon.expr.flwor
Class OrderByClausePull
- java.lang.Object
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- net.sf.saxon.expr.flwor.TuplePull
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- net.sf.saxon.expr.flwor.OrderByClausePull
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Field Summary
Fields Modifier and Type Field Description protected AtomicComparer[]
comparers
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Constructor Summary
Constructors Constructor Description OrderByClausePull(TuplePull base, TupleExpression tupleExpr, OrderByClause orderBy, XPathContext context)
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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 although not all tuples have been read, no further tuples are required and resources can be releasedint
compare(int a, int b)
Compare two objects within this Sortable, identified by their position.boolean
nextTuple(XPathContext context)
Move on to the next tuple.void
swap(int a, int b)
Swap two objects within this Sortable, identified by their position.
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Field Detail
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comparers
protected AtomicComparer[] comparers
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Constructor Detail
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OrderByClausePull
public OrderByClausePull(TuplePull base, TupleExpression tupleExpr, OrderByClause orderBy, XPathContext context)
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Method Detail
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nextTuple
public boolean nextTuple(XPathContext context) throws XPathException
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- Specified by:
nextTuple
in classTuplePull
- Parameters:
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 are undefined.
- Throws:
XPathException
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compare
public int compare(int a, int b)
Compare two objects within this Sortable, identified by their position.
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swap
public void swap(int a, int b)
Swap two objects within this Sortable, identified by their position.
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