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-/*
- * Copyright 2011 Vaadin Ltd.
- *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not
- * use this file except in compliance with the License. You may obtain a copy of
- * the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
- * License for the specific language governing permissions and limitations under
- * the License.
- */
-
-package com.vaadin.service;
-
-import java.io.File;
-import java.io.Serializable;
-import java.util.Collection;
-
-import com.vaadin.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 a web-environment this corresponds to a
- * HttpSession.
- *
- * @author Vaadin Ltd.
- * @since 3.1
- */
-public interface ApplicationContext extends Serializable {
-
- /**
- * Returns application context base directory.
- *
- * Typically an application is deployed in a such way that is has an
- * application directory. For web applications this directory is the root
- * directory of the web applications. In some cases applications might not
- * have an application directory (for example web applications running
- * inside a war).
- *
- * @return The application base directory or null if the application has no
- * base directory.
- */
- public File getBaseDirectory();
-
- /**
- * Returns a collection of all the applications in this context.
- *
- * Each application context contains all active applications for one user.
- *
- * @return A collection containing all the applications in this context.
- */
- public Collection<Application> getApplications();
-
- /**
- * Adds a transaction listener to this context. The transaction listener is
- * called before and after each each request related to this session except
- * when serving static resources.
- *
- * The transaction listener must not be null.
- *
- * @see com.vaadin.service.ApplicationContext#addTransactionListener(com.vaadin.service.ApplicationContext.TransactionListener)
- */
- public void addTransactionListener(TransactionListener listener);
-
- /**
- * Removes a transaction listener from this context.
- *
- * @param listener
- * the listener to be removed.
- * @see TransactionListener
- */
- public void removeTransactionListener(TransactionListener listener);
-
- /**
- * Returns the time between requests, in seconds, before this context is
- * invalidated. A negative time indicates the context should never timeout.
- */
- public int getMaxInactiveInterval();
-
- /**
- * Interface for listening to transaction events. Implement this interface
- * to listen to all transactions between the client and the application.
- *
- */
- public interface TransactionListener extends Serializable {
-
- /**
- * Invoked at the beginning of every transaction.
- *
- * The transaction is linked to the context, not the application so if
- * you have multiple applications running in the same context you need
- * to check that the request is associated with the application you are
- * interested in. This can be done looking at the application parameter.
- *
- * @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.
- *
- * The transaction is linked to the context, not the application so if
- * you have multiple applications running in the same context you need
- * to check that the request is associated with the application you are
- * interested in. This can be done looking at the application parameter.
- *
- * @param applcation
- * the Application object.
- * @param transactionData
- * the Data identifying the transaction.
- */
- public void transactionEnd(Application application,
- Object transactionData);
-
- }
-}