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java.lang.Objectnet.sf.saxon.expr.ComputedExpression
net.sf.saxon.expr.UnaryExpression
net.sf.saxon.expr.UntypedAtomicConverter
An UntypedAtomicConverter is an expression that converts any untypedAtomic items in a sequence to a specified type
| Field Summary |
| Fields inherited from class net.sf.saxon.expr.UnaryExpression |
operand |
| Fields inherited from class net.sf.saxon.expr.ComputedExpression |
locationId, staticProperties |
| Fields inherited from interface net.sf.saxon.expr.Expression |
EVALUATE_METHOD, ITERATE_METHOD, PROCESS_METHOD |
| Constructor Summary | |
UntypedAtomicConverter(Expression sequence,
AtomicType requiredItemType,
boolean allConverted)
Constructor |
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| Method Summary | |
int |
computeSpecialProperties()
Determine the special properties of this expression |
protected java.lang.String |
displayOperator(Configuration config)
Give a string representation of the operator for use in diagnostics |
Item |
evaluateItem(XPathContext context)
Evaluate as an Item. |
ItemType |
getItemType(TypeHierarchy th)
Determine the data type of the items returned by the expression |
SequenceIterator |
iterate(XPathContext context)
Iterate over the sequence of values |
Expression |
typeCheck(StaticContext env,
ItemType contextItemType)
Type-check the expression |
| Methods inherited from class net.sf.saxon.expr.UnaryExpression |
computeCardinality, display, equals, getBaseExpression, hashCode, iterateSubExpressions, optimize, promote, replaceSubExpression, simplify |
| Methods inherited from class java.lang.Object |
clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
public UntypedAtomicConverter(Expression sequence,
AtomicType requiredItemType,
boolean allConverted)
sequence - this must be a sequence of atomic values. This is not checked; a ClassCastException
will occur if the precondition is not satisfied.requiredItemType - the item type to which untypedAtomic items in the sequence should be converted,
using the rules for "cast as".allConverted - true if the result of this expression is a sequence in which all items
belong to the required type| Method Detail |
public ItemType getItemType(TypeHierarchy th)
getItemType in interface ExpressiongetItemType in class UnaryExpressionth -
public Expression typeCheck(StaticContext env,
ItemType contextItemType)
throws XPathException
typeCheck in interface ExpressiontypeCheck in class UnaryExpressionXPathExceptionpublic int computeSpecialProperties()
computeSpecialProperties in class UnaryExpressionStaticProperty.NON_CREATIVE.
public SequenceIterator iterate(XPathContext context)
throws XPathException
iterate in interface Expressioniterate in class ComputedExpressioncontext - supplies the context for evaluation
XPathException - if any dynamic error occurs evaluating the
expression
public Item evaluateItem(XPathContext context)
throws XPathException
evaluateItem in interface ExpressionevaluateItem in class ComputedExpressioncontext - The context in which the expression is to be evaluated
XPathException - if any dynamic error occurs evaluating the
expressionprotected java.lang.String displayOperator(Configuration config)
displayOperator in class UnaryExpressionconfig -
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