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: Class Count
com.icl.saxon.functions
Class Count
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.Count
- public class Count
- extends Function
Constructor Summary |
Count()
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Methods inherited from class com.icl.saxon.expr.Expression |
containsReferences, enumerate, evaluateAsBoolean, evaluateAsNodeSet, evaluateAsString, 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 |
Count
public Count()
getName
public java.lang.String getName()
- Function name (for diagnostics)
- 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.NUMBER
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
evaluateAsNumber
public double evaluateAsNumber(Context c)
throws XPathException
- Evaluate the function in a numeric context
- Overrides:
evaluateAsNumber in class Expression
- Following copied from class:
com.icl.saxon.expr.Expression
- Parameters:
context - The context in which the expression is to be evaluated- Returns:
- 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 evaluated- Returns:
- the value of the expression, evaluated in the current context
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 evaluation- Returns:
- a new expression (or Value) that does not have any of the specified dependencies
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