Class SubstringBefore

java.lang.Object
com.icl.saxon.expr.Expression
com.icl.saxon.expr.Function
com.icl.saxon.functions.SubstringBefore
public class SubstringBefore extends Function

  • Constructor Details

    • SubstringBefore

      public SubstringBefore()

  • Method Details

    • getName

      public String getName()
      Description copied from class: Function
      Get the name of the function. This method must be implemented in all subclasses.
      Specified by:
      getName in class 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
      Specified by:
      getDataType in class Expression
      Returns:
      Value.STRING

    • simplify

      public Expression simplify() throws XPathException
      Simplify and validate
      Overrides:
      simplify in class Expression
      Returns:
      the simplified expression
      Throws:
      XPathException

    • evaluateAsString

      public String evaluateAsString(Context context) throws XPathException
      Evaluate the function in a string context
      Overrides:
      evaluateAsString in class Expression
      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

    • evaluate

      public Value evaluate(Context c) throws XPathException
      Evaluate in a general context
      Specified by:
      evaluate in class Expression
      Parameters:
      c - The context in which the expression is to be evaluated
      Returns:
      the value of the expression, evaluated in the current context
      Throws:
      XPathException

    • getDependencies

      public int getDependencies()
      Get dependencies
      Specified by:
      getDependencies in class Expression

    • reduce

      public Expression reduce(int dep, Context c) throws XPathException
      Remove dependencies
      Specified by:
      reduce in class Expression
      Parameters:
      dep - The dependencies to be removed, e.g. Context.VARIABLES
      c - 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