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org.apache.cocoon.components.flow.apples
Class ApplesProcessor

java.lang.Object
  org.apache.avalon.framework.logger.AbstractLogEnabled
      org.apache.cocoon.components.flow.AbstractInterpreter
          org.apache.cocoon.components.flow.apples.ApplesProcessor

All Implemented Interfaces:

Disposable, Component, Configurable, Contextualizable, LogEnabled, Serviceable, SingleThreaded, ContinuationsDisposer, Interpreter

public class ApplesProcessor
extends AbstractInterpreter
implements Serviceable, ContinuationsDisposer

ApplesProcessor is the core Cocoon component that provides the 'Apples' flow implementation.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.cocoon.components.flow.Interpreter

Interpreter.Argument

Field Summary

Fields inherited from class org.apache.cocoon.components.flow.AbstractInterpreter

avalonContext, checkTime, context, continuationsMgr, manager, needResolve, reloadScripts

Fields inherited from interface org.apache.cocoon.components.flow.Interpreter

ROLE

Constructor Summary

ApplesProcessor()

Method Summary

void	callFunction(String className, List params, Redirector redirector) This method is called from the sitemap, using the syntax <map:call function="..."
void	disposeContinuation(WebContinuation webContinuation) Disposes the passed continuation object.
void	handleContinuation(String continuationId, List params, Redirector redirector) Continues a previously started processing.
void	service(ServiceManager serviceManager) Serviceable

Methods inherited from class org.apache.cocoon.components.flow.AbstractInterpreter

configure, contextualize, dispose, forwardTo, getInterpreterID, process, register, setInterpreterID

Methods inherited from class org.apache.avalon.framework.logger.AbstractLogEnabled

enableLogging, getLogger, setupLogger, setupLogger, setupLogger

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ApplesProcessor

public ApplesProcessor()

Method Detail

callFunction

public void callFunction(String className,
                         List params,
                         Redirector redirector)
                  throws Exception

Description copied from interface: Interpreter

This method is called from the sitemap, using the syntax

   <map:call function="..."/>
 

The method will execute the named function, which must be defined in the given language. There is no assumption made on how various arguments are passed to the function.

The params argument is a List object that contains Interpreter.Argument instances, representing the parameters to be passed to the called function. An Argument instance is a key-value pair, where the key is the name of the parameter, and the value is its desired value. Most languages will ignore the name value and simply pass to the function, in a positional order, the values of the argument. Some languages however can pass the arguments in a different order than the original prototype of the function. For these languages the ability to associate the actual argument with a formal parameter using its name is essential.

A particular language implementation may decide to put the environment, request, response etc. objects in the dynamic scope available to the function at the time of the call. Other implementations may decide to pass these as arguments to the called function.

The current implementation assumes the sitemap implementation is TreeProcessor.

Specified by:

callFunction in interface Interpreter

Parameters:

className - a String value, the name of the function to call

params - a List object whose components are CallFunctionNode.Argument instances. The interpretation of the parameters is left to the actual implementation of the interpreter.

redirector - a Redirector used to call views

Throws:

Exception

handleContinuation

public void handleContinuation(String continuationId,
                               List params,
                               Redirector redirector)
                        throws Exception

Description copied from interface: Interpreter

Continues a previously started processing. The continuation object where the processing should start from is indicated by the continuationId string.

Specified by:

handleContinuation in interface Interpreter

Parameters:

continuationId - a String value

params - a List value, containing the parameters to be passed when invoking the continuation. As opposed to the parameters passed by callFunction, these parameters will only become available in the language's environment, if at all.

redirector - a Redirector used to call views

Throws:

Exception - if an error occurs

disposeContinuation

public void disposeContinuation(WebContinuation webContinuation)

Description copied from interface: ContinuationsDisposer

Disposes the passed continuation object.

This method is called from the ContinuationsManager in the event of the invalidation of a continuation upon the ContinuationsDisposer object passed during the creation of the WebContinuation.

Specified by:

disposeContinuation in interface ContinuationsDisposer

Parameters:

webContinuation - the WebContinuation value representing the continuation object.

service

public void service(ServiceManager serviceManager)
             throws ServiceException

Description copied from class: AbstractInterpreter

Serviceable

Specified by:

service in interface Serviceable

Overrides:

service in class AbstractInterpreter

Throws:

ServiceException