Package org.hippoecm.hst.core.component

Interface HstComponent

All Known Implementing Classes:

GenericHstComponent

public interface HstComponent

A HstComponent can be invoked by a HstComponent container during three different request lifecycle phases: ACTION, RESOURCE and RENDER. A HstComponent should be implemented to be thread-safe because the HST container create one instance to serve each request.

Version:

$Id$

Method Summary

Modifier and Type	Method	Description
void	destroy()	Allows the component to destroy itself
void	doAction(HstRequest request, HstResponse response)	Allows the component to process actions
void	doBeforeRender(HstRequest request, HstResponse response)	Allows the component to do some business logic processing before rendering
void	doBeforeServeResource(HstRequest request, HstResponse response)	Allows the component to do some business logic processing before serving resource
default ComponentConfiguration	getComponentConfiguration()	Returns the ComponentConfiguration for this component or null if not implemented by a subclass
void	init(javax.servlet.ServletContext servletContext, ComponentConfiguration componentConfig)	Allows the component to initialize itself
default void	prepareBeforeRender(HstRequest request, HstResponse response)	This method is invoked before doBeforeRender(HstRequest, HstResponse) method to give an HstComponent a chance to prepare any business service invocation(s).

Method Detail

init

void init(javax.servlet.ServletContext servletContext,
          ComponentConfiguration componentConfig)
   throws HstComponentException

Allows the component to initialize itself

Parameters:

servletContext - the servletConfig of the HST container servlet

componentConfig - the componentConfigBean configuration

Throws:

HstComponentException

prepareBeforeRender

default void prepareBeforeRender(HstRequest request,
                                 HstResponse response)
                          throws HstComponentException

This method is invoked before doBeforeRender(HstRequest, HstResponse) method to give an HstComponent a chance to prepare any business service invocation(s). This method can be implemented to prepare business content objects by creating asynchronous jobs in parallel without having to wait each component's doBeforeRender(HstRequest, HstResponse) execution sequentially.

Parameters:

request -

response -

Throws:

HstComponentException

doBeforeRender

void doBeforeRender(HstRequest request,
                    HstResponse response)
             throws HstComponentException

Allows the component to do some business logic processing before rendering

Parameters:

request -

response -

Throws:

HstComponentException

doAction

void doAction(HstRequest request,
              HstResponse response)
       throws HstComponentException

Allows the component to process actions

Parameters:

request -

response -

Throws:

HstComponentException

doBeforeServeResource

void doBeforeServeResource(HstRequest request,
                           HstResponse response)
                    throws HstComponentException

Allows the component to do some business logic processing before serving resource

Parameters:

request -

response -

Throws:

HstComponentException

destroy

void destroy()
      throws HstComponentException

Allows the component to destroy itself

Throws:

HstComponentException

getComponentConfiguration

default ComponentConfiguration getComponentConfiguration()

Returns the ComponentConfiguration for this component or null if not implemented by a subclass