Package org.apache.bsf.engines.jython

Class JythonEngine

java.lang.Object
org.apache.bsf.util.BSFEngineImpl
org.apache.bsf.engines.jython.JythonEngine
All Implemented Interfaces:
PropertyChangeListener, EventListener, BSFEngine
public class JythonEngine extends BSFEngineImpl
This is the interface to Jython (http://www.jython.org/) from BSF. It's derived from the JPython 1.x engine
Author:
Sanjiva Weerawarana, Finn Bock <bckfnn@worldonline.dk>, Chuck Murcko, Sonny To" <son.c.to@gmail.com>, 2006-10-30

  • Constructor Details

    • JythonEngine

      public JythonEngine()

  • Method Details

    • call

      public Object call(Object object, String method, Object[] args) throws BSFException
      call the named method of the given object.
      Parameters:
      object - object on which to make the call
      method - name of the method / procedure to call
      args - the arguments to be given to the procedure
      Throws:
      BSFException - if anything goes wrong while eval'ing a BSFException is thrown. The reason indicates the problem.

    • declareBean

      public void declareBean(BSFDeclaredBean bean) throws BSFException
      Declare a bean
      Specified by:
      declareBean in interface BSFEngine
      Overrides:
      declareBean in class BSFEngineImpl
      Parameters:
      bean - the bean to declare
      Throws:
      BSFException - if the engine cannot do this operation

    • apply

      public Object apply(String source, int lineNo, int columnNo, Object funcBody, Vector paramNames, Vector arguments) throws BSFException
      Evaluate an anonymous function (differs from eval() in that apply() handles multiple lines).
      Specified by:
      apply in interface BSFEngine
      Overrides:
      apply in class BSFEngineImpl
      Parameters:
      source - (context info) the source of this expression (e.g., filename)
      lineNo - (context info) the line number in source for expr
      columnNo - (context info) the column number in source for expr
      funcBody - the multi-line, value returning script to evaluate
      paramNames - the names of the parameters above assumes
      arguments - values of the above parameters
      Throws:
      BSFException - if anything goes wrong while doin' it.

    • eval

      public Object eval(String source, int lineNo, int columnNo, Object script) throws BSFException
      Evaluate an expression.
      Parameters:
      source - (context info) the source of this expression (e.g., filename)
      lineNo - (context info) the line number in source for expr
      columnNo - (context info) the column number in source for expr
      script - the expression to evaluate
      Throws:
      BSFException - if anything goes wrong while eval'ing a BSFException is thrown. The reason indicates the problem.

    • exec

      public void exec(String source, int lineNo, int columnNo, Object script) throws BSFException
      Execute a script.
      Specified by:
      exec in interface BSFEngine
      Overrides:
      exec in class BSFEngineImpl
      Parameters:
      source - (context info) the source of this expression (e.g., filename)
      lineNo - (context info) the line number in source for expr
      columnNo - (context info) the column number in source for expr
      script - the script to execute
      Throws:
      BSFException - if anything goes wrong while exec'ing a BSFException is thrown. The reason indicates the problem.

    • iexec

      public void iexec(String source, int lineNo, int columnNo, Object script) throws BSFException
      Execute script code, emulating console interaction.
      Specified by:
      iexec in interface BSFEngine
      Overrides:
      iexec in class BSFEngineImpl
      Parameters:
      source - (context info) the source of this expression (e.g., filename)
      lineNo - (context info) the line number in source for expr
      columnNo - (context info) the column number in source for expr
      script - the script to execute
      Throws:
      BSFException - if anything goes wrong while exec'ing a BSFException is thrown. The reason indicates the problem.

    • initialize

      public void initialize(BSFManager mgr, String lang, Vector declaredBeans) throws BSFException
      Initialize the engine.
      Specified by:
      initialize in interface BSFEngine
      Overrides:
      initialize in class BSFEngineImpl
      Parameters:
      mgr - The BSFManager that's hosting this engine.
      lang - Language string which this engine is handling.
      declaredBeans - Vector of BSFDeclaredObject containing beans that should be declared into the language runtime at init time as best as possible.
      Throws:
      BSFException - if anything goes wrong while init'ing a BSFException is thrown. The reason indicates the problem.

    • undeclareBean

      public void undeclareBean(BSFDeclaredBean bean) throws BSFException
      Undeclare a previously declared bean.
      Specified by:
      undeclareBean in interface BSFEngine
      Overrides:
      undeclareBean in class BSFEngineImpl
      Parameters:
      bean - the bean to undeclare
      Throws:
      BSFException - if the engine cannot do this operation

    • unwrap

      public Object unwrap(org.python.core.PyObject result)

    • propertyChange

      public void propertyChange(PropertyChangeEvent e)
      Description copied from class: BSFEngineImpl
      Receive property change events from the manager and update my fields as needed.
      Specified by:
      propertyChange in interface PropertyChangeListener
      Overrides:
      propertyChange in class BSFEngineImpl
      Parameters:
      e - PropertyChange event with the change data