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| java.lang.Object
 net.sf.saxon.expr.ComputedExpression
net.sf.saxon.instruct.Instruction
net.sf.saxon.instruct.GeneralVariable
net.sf.saxon.instruct.Assign
| Assign | | public class Assign extends GeneralVariable implements BindingReference(Code) | | saxon:assign element in stylesheet.
The saxon:assign element has mandatory attribute name and optional attribute expr.
It also allows xsl:extension-element-prefixes etc.
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| Constructor Summary | |
| public | Assign()
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| createsNewNodes | | final public boolean createsNewNodes()(Code) | | Determine whether this instruction creates new nodes.
This implementation returns true: although the instruction doesn't create new
nodes, pretending that it does causes the optimizer to avoid pulling the instruction out of a loop.
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| getInstructionNameCode | | public int getInstructionNameCode()(Code) | | Get the name of this instruction for diagnostic and tracing purposes
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| promote | | public Expression promote(PromotionOffer offer) throws XPathException(Code) | | Offer promotion for this subexpression. This needs careful handling in the
case of saxon:assign
Parameters:
offer - details of the offer, for example the offer to moveexpressions that don't depend on the context to an outer level inthe containing expression
exception:
net.sf.saxon.trans.XPathException - if any error is detected if the offer is not accepted, return this expression unchanged.Otherwise return the result of rewriting the expression to promotethis subexpression |
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