net.sf.saxon.functions
Class Remove
java.lang.Object
net.sf.saxon.expr.ComputedExpression
net.sf.saxon.expr.FunctionCall
net.sf.saxon.functions.SystemFunction
net.sf.saxon.functions.Remove
- All Implemented Interfaces:
- Serializable, Expression
public class Remove
- extends SystemFunction
The XPath 2.0 remove() function
- See Also:
- Serialized Form
Methods inherited from class net.sf.saxon.expr.ComputedExpression |
computeDependencies, computeSpecialProperties, computeStaticProperties, dynamicError, effectiveBooleanValue, evaluateAsString, evaluateItem, getCardinality, getDependencies, getIntrinsicDependencies, getLineNumber, getSpecialProperties, markTailFunctionCalls, setLineNumber, typeError |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Remove
public Remove()
simplify
public Expression simplify()
throws XPathException
- Simplify. Recognize remove(seq, 1) as a TailExpression.
- Specified by:
simplify
in interface Expression
- Overrides:
simplify
in class FunctionCall
- Returns:
- the simplified expression
- Throws:
XPathException
- if an error is discovered during expression
rewriting
getItemType
public ItemType getItemType()
- Determine the data type of the items in the sequence
- Specified by:
getItemType
in interface Expression
- Overrides:
getItemType
in class SystemFunction
- Returns:
- the type of the input sequence
iterate
public SequenceIterator iterate(XPathContext context)
throws XPathException
- Evaluate the function to return an iteration of selected nodes.
- Specified by:
iterate
in interface Expression
- Overrides:
iterate
in class ComputedExpression
- Parameters:
context
- supplies the context for evaluation
- Returns:
- a SequenceIterator that can be used to iterate over the result
of the expression
- Throws:
XPathException
- if any dynamic error occurs evaluating the
expression