NegateExpression.NegateElaborator

java.lang.Object

net.sf.saxon.expr.elab.Elaborator

net.sf.saxon.expr.elab.ItemElaborator

net.sf.saxon.expr.NegateExpression.NegateElaborator

Enclosing class:: NegateExpression

public static class NegateExpression.NegateElaborator extends ItemElaborator

Elaborator for a negate expression (that is, unary minus)

Constructor Summary

Constructors

Constructor

Description

NegateElaborator()
Method Summary

Modifier and Type

Method

Description

ItemEvaluator

elaborateForItem()

Get a function that evaluates the underlying expression in the form of a Item.

Methods inherited from class net.sf.saxon.expr.elab.ItemElaborator
eagerly, elaborateForBoolean, elaborateForPull, elaborateForPush, elaborateForUnicodeString

Methods inherited from class net.sf.saxon.expr.elab.Elaborator
elaborateForString, elaborateForUpdate, getConfiguration, getExpression, handleNullString, handleNullUnicodeString, handlePossiblyNullString, handlePossiblyNullUnicodeString, lazily, setExpression

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details
- NegateElaborator
  
  public NegateElaborator()
Method Details
- elaborateForItem
  
  public ItemEvaluator elaborateForItem()
  
  Description copied from class: Elaborator
  
  Get a function that evaluates the underlying expression in the form of a Item. This must only be called for expressions whose result has cardinality zero or one.
  
  Specified by:
  
  elaborateForItem in class ItemElaborator
  
  Returns:
  
  an evaluator for the expression that returns an Item, or null to represent an empty sequence.