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: Class SystemProperty
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com.icl.saxon.functions
Class SystemProperty


java.lang.Object

  |

  +--com.icl.saxon.expr.Expression

        |

        +--com.icl.saxon.expr.Function

              |

              +--com.icl.saxon.functions.SystemProperty
public class SystemProperty
extends Function

Fields inherited from class com.icl.saxon.expr.Function
argument
 
Fields inherited from class com.icl.saxon.expr.Expression
staticContext
 
Constructor Summary
SystemProperty()
           
 
Method Summary
 Value evaluate(Context context)
          Evaluate the function
 int getDataType()
          Determine the data type of the expression
 int getDependencies()
          Get dependencies
 java.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 dependencies
 Expression simplify()
          Validate and simplify
 
Methods inherited from class com.icl.saxon.expr.Function
addArgument, checkArgumentCount, display, getNumberOfArguments
 
Methods inherited from class com.icl.saxon.expr.Expression
containsReferences, enumerate, evaluateAsBoolean, evaluateAsNodeSet, evaluateAsNumber, 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
 

Constructor Detail

SystemProperty


public SystemProperty()
Method Detail

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.ANY (meaning not known in advance)

simplify


public Expression simplify()
                    throws XPathException
Validate and simplify
Overrides:
simplify in class Expression
Following copied from class: com.icl.saxon.expr.Expression
Returns:
the simplified expression

evaluate


public Value evaluate(Context context)
               throws XPathException
Evaluate the function
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

getProperty


public static Value getProperty(java.lang.String uri,
                                java.lang.String local)
Here's the real code:

getDependencies


public int getDependencies()
Get dependencies
Overrides:
getDependencies in class Expression

reduce


public Expression reduce(int dep,
                         Context c)
                  throws XPathException
Remove 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.VARIABLES
context - 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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