Package com.icl.saxon.functions
Class SystemProperty
- 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.SystemProperty
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public class SystemProperty extends Function
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Field Summary
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Fields inherited from class com.icl.saxon.expr.Expression
staticContext
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Constructor Summary
Constructors Constructor Description SystemProperty()
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description Value
evaluate(Context context)
Evaluate the functionint
getDataType()
Determine the data type of the expressionint
getDependencies()
Get dependenciesjava.lang.String
getName()
Get the name of the function.static Value
getProperty(java.lang.String uri, java.lang.String local)
Here's the real code:Expression
reduce(int dep, Context c)
Remove dependenciesExpression
simplify()
Validate and simplify-
Methods inherited from class com.icl.saxon.expr.Function
addArgument, checkArgumentCount, display, getNumberOfArguments
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Methods inherited from class com.icl.saxon.expr.Expression
containsReferences, enumerate, evaluateAsBoolean, evaluateAsNodeSet, evaluateAsNumber, evaluateAsString, getStaticContext, indent, isContextDocumentNodeSet, make, outputStringValue, setStaticContext, usesCurrent
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Method Detail
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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.
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getDataType
public int getDataType()
Determine the data type of the expression- Specified by:
getDataType
in classExpression
- Returns:
- Value.ANY (meaning not known in advance)
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simplify
public Expression simplify() throws XPathException
Validate and simplify- Overrides:
simplify
in classExpression
- Returns:
- the simplified expression
- Throws:
XPathException
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evaluate
public Value evaluate(Context context) throws XPathException
Evaluate the function- Specified by:
evaluate
in classExpression
- Parameters:
context
- The context in which the expression is to be evaluated- Returns:
- the value of the expression, evaluated in the current context
- Throws:
XPathException
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getProperty
public static Value getProperty(java.lang.String uri, java.lang.String local)
Here's the real code:
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getDependencies
public int getDependencies()
Get dependencies- Specified by:
getDependencies
in classExpression
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reduce
public Expression reduce(int dep, Context c) throws XPathException
Remove dependencies- Specified by:
reduce
in classExpression
- Parameters:
dep
- The dependencies to be removed, e.g. Context.VARIABLESc
- The context to be used for the partial evaluation- Returns:
- a new expression (or Value) that does not have any of the specified dependencies
- Throws:
XPathException
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