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java.lang.Objectnet.sf.saxon.expr.ComputedExpression
net.sf.saxon.expr.FunctionCall
net.sf.saxon.functions.SystemFunction
net.sf.saxon.functions.Subsequence
public class Subsequence
Implements the XPath 2.0 subsequence() function
Field Summary |
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Fields inherited from class net.sf.saxon.functions.SystemFunction |
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operation |
Fields inherited from class net.sf.saxon.expr.FunctionCall |
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argument |
Fields inherited from class net.sf.saxon.expr.ComputedExpression |
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locationId, staticProperties |
Fields inherited from interface net.sf.saxon.expr.Expression |
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EVALUATE_METHOD, ITERATE_METHOD, PROCESS_METHOD |
Constructor Summary | |
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Subsequence()
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Method Summary | |
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int |
computeSpecialProperties()
Get the static properties of this expression (other than its type). |
ItemType |
getItemType(TypeHierarchy th)
Determine the data type of the items in the sequence |
SequenceIterator |
iterate(XPathContext context)
Evaluate the function to return an iteration of selected nodes. |
Methods inherited from class net.sf.saxon.functions.SystemFunction |
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addContextDocumentArgument, checkArguments, computeCardinality, display, getDetails, getErrorCodeForTypeErrors, getRequiredType, main, makeSystemFunction, setDetails, useContextItemAsDefault |
Methods inherited from class net.sf.saxon.expr.FunctionCall |
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checkArgumentCount, getDisplayName, getFunctionNameCode, getNumberOfArguments, iterateSubExpressions, optimize, preEvaluate, promote, setArguments, setFunctionNameCode, simplify, simplifyArguments, typeCheck |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public Subsequence()
Method Detail |
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public ItemType getItemType(TypeHierarchy th)
getItemType
in interface Expression
getItemType
in class SystemFunction
th
-
public int computeSpecialProperties()
computeSpecialProperties
in class SystemFunction
public SequenceIterator iterate(XPathContext context) throws XPathException
iterate
in interface Expression
iterate
in class ComputedExpression
context
- supplies the context for evaluation
XPathException
- if any dynamic error occurs evaluating the
expression
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