com.beasys.commerce.foundation.flow
Class FlowManager

java.lang.Object
  |
  +--javax.servlet.GenericServlet
        |
        +--javax.servlet.http.HttpServlet
              |
              +--com.beasys.commerce.foundation.flow.FlowManager

public class FlowManager

extends javax.servlet.http.HttpServlet

implements FlowManagerConstants

Flow Manager servlet. This class is responsible for pulling the property set for the application, caching it, and passing the information to the DestinationDeterminer and DestinationHandler.

See Also:

Serialized Form

Field Summary

protected java.util.HashMap	applications Keep track of the applications and their data.
protected SchemaManager	schemaManager

Fields inherited from interface com.beasys.commerce.foundation.flow.FlowManagerConstants

APPLICATION_FLOW_MANAGER, APPLICATION_RESET_FLAG, PERIOD

Constructor Summary

FlowManager()
Default constructor.

Method Summary

protected java.lang.String	cleanPathInfo(java.lang.String aPath) Clean the path info.
protected java.lang.Object	createObject(java.lang.String aName) Create a new instance for the specified name.
protected com.beasys.commerce.foundation.flow.FlowManager.Application	getApplication(java.lang.String aName, boolean forceReset) Get the application associated to the passed name.
protected java.lang.String	getFlowManagerURI(javax.servlet.http.HttpServletRequest req) Get flow manager URI.
protected java.util.Map	getPropertySet(java.lang.String aName) Get the property set for the application name.
SchemaManager	getSchemaManager() Look up and get a handle to the SchemaManager.
void	init(javax.servlet.ServletConfig config) Initializes the servlet.
void	service(javax.servlet.http.HttpServletRequest req, javax.servlet.http.HttpServletResponse res) Service the request.

Methods inherited from class javax.servlet.http.HttpServlet

doDelete, doGet, doOptions, doPost, doPut, doTrace, getLastModified, service

Methods inherited from class javax.servlet.GenericServlet

destroy, getInitParameter, getInitParameterNames, getServletConfig, getServletContext, getServletInfo, getServletName, init, log, log

Methods inherited from class java.lang.Object

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

Field Detail

applications

protected java.util.HashMap applications

Keep track of the applications and their data.

schemaManager

protected SchemaManager schemaManager

Constructor Detail

FlowManager

public FlowManager()

Default constructor.

Method Detail

init

public void init(javax.servlet.ServletConfig config)
          throws javax.servlet.ServletException

Initializes the servlet.

Overrides:

init in class javax.servlet.GenericServlet

Parameters:

config - a ServletConfig configuration

Throws:

ServletException -

cleanPathInfo

protected java.lang.String cleanPathInfo(java.lang.String aPath)

Clean the path info. If the path starts with a '/', strip it off. If there is a trailing '/', strip it off also.

Parameters:

aPath - the path info from getPathInfo().

Returns:

String

getSchemaManager

public SchemaManager getSchemaManager()
                               throws javax.servlet.ServletException

Look up and get a handle to the SchemaManager.

Returns:

SchemaManager

createObject

protected java.lang.Object createObject(java.lang.String aName)
                                 throws javax.servlet.ServletException

Create a new instance for the specified name. Check all of the exceptions, if there is an exception, wrap it in a ServletException.

Parameters:

aName - a qualified class name.

Returns:

Object a new instance of the class name.

Throws:

ServletException -

getApplication

protected com.beasys.commerce.foundation.flow.FlowManager.Application getApplication(java.lang.String aName,
                                                                                     boolean forceReset)
                                                                              throws javax.servlet.ServletException

Get the application associated to the passed name.

Parameters:

aName - the name of the application.

forceReset - are we forcing the cache to be reset, regardless of the last time it was retrieved.

Returns:

Application struct containing information for the application. Contains ttl, DestinationDeterminer, DestinationHandler, and the last time it was retrieved.

Throws:

ServletException -

getPropertySet

protected java.util.Map getPropertySet(java.lang.String aName)
                                throws javax.servlet.ServletException

Get the property set for the application name.

Parameters:

aName - the application name.

Returns:

Map the property set as a Map.

Throws:

ServletException -

getFlowManagerURI

protected java.lang.String getFlowManagerURI(javax.servlet.http.HttpServletRequest req)

Get flow manager URI.

Parameters:

req -

Returns:

String

service

public void service(javax.servlet.http.HttpServletRequest req,
                    javax.servlet.http.HttpServletResponse res)
             throws java.io.IOException,
                    javax.servlet.ServletException

Service the request. This is the standard servlet service method. 1. Retrieve the application name. 2. Retrieve the application property set. 3. Get the DestinationDeterminer and DestinationHandler. 4. Call the DestinationDeterminer. 5. Call the DestinationHandler.

Overrides:

service in class javax.servlet.http.HttpServlet

Parameters:

req - the request.

res - the response.

Throws:

IOException -

ServletException -