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java.lang.Object | +--com.icl.saxon.expr.Expression | +--com.icl.saxon.expr.Function | +--com.icl.saxon.functions.StringLength
Fields inherited from class com.icl.saxon.expr.Function |
arguments |
Fields inherited from class com.icl.saxon.expr.Expression |
emptyVector, staticContext |
Constructor Summary | |
StringLength()
|
Method Summary | |
Value |
eval(java.util.Vector args,
Context context)
Evaluate the function, having evaluated its arguments. |
int |
getDataType()
Determine the data type of the exprssion, if possible |
int |
getIntrinsicDependencies()
Determine which aspects of the context the expression depends on. |
java.lang.String |
getName()
Get the name of the function. |
Expression |
simplify()
Simplify If there is an argument and it is a Value, this is a pure function so it can be simplified |
Methods inherited from class com.icl.saxon.expr.Function |
addArgument, checkArgumentCount, evaluate, getDependencies, newInstance, reduce, reduceIntrinsic, simplifyPureFunction, toString |
Methods inherited from class com.icl.saxon.expr.Expression |
containsReferences, enumerate, evaluateAsBoolean, evaluateAsNodeSet, evaluateAsNumber, evaluateAsString, getStaticContext, isNumeric, isRelative, make, make, setStaticContext, usesCurrent |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
public StringLength()
Method Detail |
public java.lang.String getName()
Function
getName
in class Function
com.icl.saxon.expr.Function
public int getDataType()
getDataType
in class Expression
public int getIntrinsicDependencies()
getIntrinsicDependencies
in class Function
public Value eval(java.util.Vector args, Context context) throws org.xml.sax.SAXException
Function
eval
in class Function
com.icl.saxon.expr.Function
arguments
- A Vector, each of whose elements is a Value containing the value of a
supplied argument to the function.context
- The context in which the function is to be evaluatedorg.xml.sax.SAXException
- if the function cannot be evaluated.public Expression simplify() throws org.xml.sax.SAXException
simplify
in class Function
com.icl.saxon.expr.Function
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