Package net.sf.saxon.expr.instruct
Class Block.BlockElaborator
java.lang.Object
net.sf.saxon.expr.elab.Elaborator
net.sf.saxon.expr.elab.PullElaborator
net.sf.saxon.expr.instruct.Block.BlockElaborator
- Enclosing class:
Block
Elaborator for a "Block", which is typically either an XPath sequence expression (a, b, c)
or an XSLT sequence constructor
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionGet a function that evaluates the underlying expression in the form of aSequenceIterator
Get a function that evaluates the underlying expression in push mode, by writing events to anOutputter
lazily
(boolean repeatable, boolean lazyEvaluationRequired) Get a function that evaluates the underlying expression lazilyMethods inherited from class net.sf.saxon.expr.elab.PullElaborator
eagerly, elaborateForBoolean, elaborateForItem, elaborateForUnicodeString
Methods inherited from class net.sf.saxon.expr.elab.Elaborator
elaborateForString, getConfiguration, getExpression, handleNullString, handleNullUnicodeString, handlePossiblyNullString, handlePossiblyNullUnicodeString, setExpression
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Constructor Details
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BlockElaborator
public BlockElaborator()
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Method Details
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lazily
Description copied from class:Elaborator
Get a function that evaluates the underlying expression lazily- Overrides:
lazily
in classElaborator
- Parameters:
repeatable
- true if the resultingSequence
must be usable repeatedly; false if it only needs to be used oncelazyEvaluationRequired
- true if the expression MUST be evaluated lazily, for example to prevent spurious errors or side-effects if it has been lifted out of a loop- Returns:
- an evaluator for the expression that returns a
Sequence
(which may be a lazy sequence)
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elaborateForPull
Description copied from class:Elaborator
Get a function that evaluates the underlying expression in the form of aSequenceIterator
- Specified by:
elaborateForPull
in classPullElaborator
- Returns:
- an evaluator for the expression that returns a
SequenceIterator
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elaborateForPush
Description copied from class:Elaborator
Get a function that evaluates the underlying expression in push mode, by writing events to anOutputter
- Overrides:
elaborateForPush
in classPullElaborator
- Returns:
- an evaluator for the expression in push mode
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elaborateForUpdate
- Overrides:
elaborateForUpdate
in classElaborator
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