net.sf.saxon.expr

Class NumericPromoter

public final class NumericPromoter extends UnaryExpression implements MappingFunction

A NumericPromoter performs numeric promotion on each item in a supplied sequence

Constructor Summary
	NumericPromoter(Expression sequence, int requiredType) Constructor

Method Summary
protected String	displayOperator(NamePool pool) Give a string representation of the operator for use in diagnostics
boolean	equals(Object other) Is this expression the same as another expression?
Item	evaluateItem(XPathContext context) Evaluate as an Item.
ItemType	getItemType(TypeHierarchy th) Determine the data type of the items returned by the expression, if possible
SequenceIterator	iterate(XPathContext context) Iterate over the sequence of values
Object	map(Item item, XPathContext context) Implement the mapping function
Expression	optimize(Optimizer opt, StaticContext env, ItemType contextItemType) Optimize the expression
Expression	simplify(StaticContext env) Simplify an expression
Expression	typeCheck(StaticContext env, ItemType contextItemType) Type-check the expression

Constructor Detail

NumericPromoter

public NumericPromoter(Expression sequence, int requiredType)

Constructor

Parameters: sequence this must be a sequence of atomic values. This is not checked; a ClassCastException will occur if the precondition is not satisfied. requiredType the item type to which all items in the sequence should be converted, using the rules for "cast as".