Package ognl.enhance

Interface ExpressionAccessor


public interface ExpressionAccessor
Provides pure java expression paths to get/set values from an ognl expression. This is achieved by taking an existing Node parsed expression and using bytecode enhancements to do the same work using pure java vs the ognl interpreter.
  • Method Summary

    Modifier and Type
    Method
    Description
    get(OgnlContext context, Object target)
    Gets the value represented by this expression path, if any.
    void
    set(OgnlContext context, Object target, Object value)
    Sets the value represented by this expression path, if possible.
    void
    setExpression(Node expression)
    Used to set the original root expression node on instances where the compiled version has to fall back to interpreted syntax because of compilation failures.
  • Method Details

    • get

      Object get(OgnlContext context, Object target)
      Gets the value represented by this expression path, if any.
      Parameters:
      context - The standard ognl context used for variable substitution/etc.
      target - The root object this expression is meant for.
      Returns:
      The evaluated value, if any.
    • set

      void set(OgnlContext context, Object target, Object value)
      Sets the value represented by this expression path, if possible.
      Parameters:
      context - The standard ognl context used for variable substitution/etc.
      target - The root object this expression is meant for.
      value - The new value to set if this expression references a settable property.
    • setExpression

      void setExpression(Node expression)
      Used to set the original root expression node on instances where the compiled version has to fall back to interpreted syntax because of compilation failures.
      Parameters:
      expression - The root expression node used to generate this accessor.