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java.lang.Objectcom.icl.saxon.expr.Expression
com.icl.saxon.expr.NodeSetExpression
com.icl.saxon.expr.NodeListExpression
A NodeListExpression is an expression denoting a set of nodes sorted in document order.
It is not possible to write a NodeListExpression directly using XPath; however a node set
expression is treated as a NodeListExpression when it appears in certain contexts, specifically
the select attribute of xsl:apply-templates or xsl:for-each.
Field Summary |
Fields inherited from class com.icl.saxon.expr.Expression |
staticContext |
Constructor Summary | |
NodeListExpression(Expression exp)
Constructor |
Method Summary | |
void |
display(int level)
Diagnostic print of expression structure |
NodeEnumeration |
enumerate(Context c,
boolean sort)
Return an enumeration that returns the nodes in document order |
int |
getDependencies()
Determine which aspects of the context the expression depends on. |
Expression |
reduce(int dependencies,
Context context)
Perform a partial evaluation of the expression, by eliminating specified dependencies on the context. |
Expression |
simplify()
Simplify the expression |
Methods inherited from class com.icl.saxon.expr.NodeSetExpression |
evaluate, evaluateAsBoolean, evaluateAsNodeSet, evaluateAsString, getDataType, outputStringValue, selectFirst |
Methods inherited from class com.icl.saxon.expr.Expression |
containsReferences, evaluateAsNumber, getStaticContext, indent, isContextDocumentNodeSet, make, setStaticContext, usesCurrent |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
public NodeListExpression(Expression exp)
exp
- The expression that delivers the unsorted node-setMethod Detail |
public Expression simplify() throws XPathException
simplify
in class Expression
XPathException
public int getDependencies()
getDependencies
in class Expression
public Expression reduce(int dependencies, Context context) throws XPathException
reduce
in class Expression
dependencies
- The dependencies to be removedcontext
- The context to be used for the partial evaluation
XPathException
public NodeEnumeration enumerate(Context c, boolean sort) throws XPathException
enumerate
in class NodeSetExpression
c
- the evaluation contextsort
- True if the nodes must be returned in document order
XPathException
public void display(int level)
display
in class Expression
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