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/* *************************************************************************
IT Mill Toolkit
Development of Browser User Interfaces Made Easy
Copyright (C) 2000-2006 IT Mill Ltd
*************************************************************************
This product is distributed under commercial license that can be found
from the product package on license.pdf. Use of this product might
require purchasing a commercial license from IT Mill Ltd. For guidelines
on usage, see licensing-guidelines.html
*************************************************************************
For more information, contact:
IT Mill Ltd phone: +358 2 4802 7180
Ruukinkatu 2-4 fax: +358 2 4802 7181
20540, Turku email: info@itmill.com
Finland company www: www.itmill.com
Primary source for information and releases: www.itmill.com
********************************************************************** */
package com.itmill.toolkit.service;
import java.io.File;
import java.util.Collection;
import com.itmill.toolkit.Application;
/**
* <code>ApplicationContext</code> provides information about the running
* context of the application. Each context is shared by all applications that
* are open for one user. In web-environment this corresponds to HttpSession.
*
* @author IT Mill Ltd.
* @version
* @VERSION@
* @since 3.1
*/
public interface ApplicationContext {
/**
* Returns application context base directory.
*
* Typically an application is deployed in a such way that is has
* application directory. For web applications this directory is the root
* directory of the web applications. In some cases application might not
* have application directory (for example web applications running inside
* of war).
*
* @return The application base directory
*/
public File getBaseDirectory();
/**
* Gets the applications in this context.
*
* Gets all applications in this context. Each application context contains
* all applications that are open for one user.
*
* @return Collection containing all applications in this context
*/
public Collection getApplications();
/**
* Adds transaction listener to this context.
*
* @param listener
* the listener to be added.
* @see TransactionListener
*/
public void addTransactionListener(TransactionListener listener);
/**
* Removes transaction listener from this context.
*
* @param listener
* the listener to be removed.
* @see TransactionListener
*/
public void removeTransactionListener(TransactionListener listener);
/**
* Interface for listening the application transaction events.
* Implementations of this interface can be used to listen all transactions
* between the client and the application.
*
*/
public interface TransactionListener {
/**
* Invoked at the beginning of every transaction.
*
* @param application
* the Application object.
* @param transactionData
* the Data identifying the transaction.
*/
public void transactionStart(Application application,
Object transactionData);
/**
* Invoked at the end of every transaction.
*
* @param applcation
* the Application object.
* @param transactionData
* the Data identifying the transaction.
*/
public void transactionEnd(Application application,
Object transactionData);
}
}
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