| java.lang.Object
 net.sf.saxon.expr.ComputedExpression
net.sf.saxon.expr.UnaryExpression
net.sf.saxon.expr.NumericPromoter
| NumericPromoter | | final public class NumericPromoter extends UnaryExpression implements MappingFunction(Code) | | A NumericPromoter performs numeric promotion on each item in a supplied sequence
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| Constructor Summary | |
| public | NumericPromoter(Expression sequence, int requiredType)
Constructor
Parameters:
sequence - this must be a sequence of atomic values. |
| NumericPromoter | | public NumericPromoter(Expression sequence, int requiredType)(Code) | | Constructor
Parameters:
sequence - this must be a sequence of atomic values. This is not checked; a ClassCastExceptionwill occur if the precondition is not satisfied.
Parameters:
requiredType - the item type to which all items in the sequence should be converted,using the rules for "cast as". |
| displayOperator | | protected String displayOperator(NamePool pool)(Code) | | Give a string representation of the operator for use in diagnostics
the operator, as a string |
| equals | | public boolean equals(Object other)(Code) | | Is this expression the same as another expression?
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| evaluateItem | | public Item evaluateItem(XPathContext context) throws XPathException(Code) | | Evaluate as an Item. This should only be called if the expression has cardinality zero-or-one
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| getItemType | | public ItemType getItemType(TypeHierarchy th)(Code) | | Determine the data type of the items returned by the expression, if possible
a value such as Type.STRING, Type.BOOLEAN, Type.NUMBER, Type.NODE,or Type.ITEM (meaning not known in advance)
Parameters:
th - |
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