: Class FormatNumber
com.icl.saxon.functions
Class FormatNumber
java.lang.Object
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+--com.icl.saxon.expr.Expression
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+--com.icl.saxon.expr.Function
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+--com.icl.saxon.functions.FormatNumber
public class FormatNumber extends Function
Methods inherited from class com.icl.saxon.expr.Expression
containsReferences , enumerate , evaluateAsBoolean , evaluateAsNodeSet , evaluateAsNumber , getStaticContext , indent , isContextDocumentNodeSet , make , outputStringValue , setStaticContext , usesCurrent
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
FormatNumber
public FormatNumber ()
getName
public java.lang.String getName ()
Description copied from class: Function
Get the name of the function.
This method must be implemented in all subclasses.
Overrides: getName
in class Function
Following copied from class: com.icl.saxon.expr.Function
Returns: the name of the function, as used in XSL expressions, but excluding
its namespace prefix
getDataType
public int getDataType ()
Determine the data type of the exprEssion
Overrides: getDataType
in class Expression
Returns: Value.STRING
simplify
public Expression simplify ()
throws XPathException
Simplify and validate
Overrides: simplify
in class Expression
Following copied from class: com.icl.saxon.expr.Expression
Returns: the simplified expression
evaluateAsString
public java.lang.String evaluateAsString (Context context)
throws XPathException
Evaluate in a context where a string is wanted
Overrides: evaluateAsString
in class Expression
Following copied from class: com.icl.saxon.expr.Expression
Parameters: context
- The context in which the expression is to be evaluatedReturns: the value of the expression, evaluated in the current context
evaluate
public Value evaluate (Context c)
throws XPathException
Evaluate in a general context
Overrides: evaluate
in class Expression
Following copied from class: com.icl.saxon.expr.Expression
Parameters: context
- The context in which the expression is to be evaluatedReturns: the value of the expression, evaluated in the current context
formatNumber
public java.lang.String formatNumber (double n,
java.lang.String format,
java.text.DecimalFormatSymbols dfs)
throws XPathException
Here is the method that does the work. It needs to be synchronized because
it remembers information from one invocation to the next; it doesn't matter
if these are in different threads but it can't be interrupted. The reason for
remembering information is that getting a new DecimalFormatSymbols each time
is incredibly expensive, especially with the Microsoft Java VM. Actually
the synchronization is unnecessary if there is a bound Controller.
getDependencies
public int getDependencies ()
Determine the dependencies
Overrides: getDependencies
in class Expression
reduce
public Expression reduce (int dep,
Context c)
throws XPathException
Reduce the dependencies
Overrides: reduce
in class Expression
Following copied from class: com.icl.saxon.expr.Expression
Parameters: dependencies
- The dependencies to be removed, e.g. Context.VARIABLEScontext
- The context to be used for the partial evaluationReturns: a new expression (or Value) that does not have any of the specified dependencies