/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.isis.viewer.wicket.viewer.integration.wicket;
import org.apache.isis.core.commons.authentication.AuthenticationSession;
import org.apache.isis.runtimes.dflt.runtime.system.context.IsisContext;
import org.apache.isis.runtimes.dflt.runtime.system.session.IsisSession;
import org.apache.isis.runtimes.dflt.runtime.system.transaction.IsisTransaction;
import org.apache.isis.runtimes.dflt.runtime.system.transaction.IsisTransactionManager;
import org.apache.log4j.Logger;
import org.apache.wicket.Response;
import org.apache.wicket.protocol.http.WebApplication;
import org.apache.wicket.protocol.http.WebRequest;
import org.apache.wicket.protocol.http.WebRequestCycle;
import org.apache.wicket.protocol.http.request.WebClientInfo;
/**
* Isis-specific implementation of the Wicket's {@link WebRequestCycle}, automatically opening a {@link IsisSession} at
* the beginning of the request and committing the transaction and closing the session at the end.
*/
public class WebRequestCycleForIsis extends WebRequestCycle {
private static final Logger LOG = Logger.getLogger(WebRequestCycleForIsis.class);
public WebRequestCycleForIsis(final WebApplication application, final WebRequest request, final Response response) {
super(application, request, response);
}
/**
* Convenience, downcasts.
*/
@Override
public AuthenticatedWebSessionForIsis getWebSession() {
return (AuthenticatedWebSessionForIsis) super.getWebSession();
}
@Override
protected synchronized void onBeginRequest() {
super.onBeginRequest();
final AuthenticatedWebSessionForIsis wicketSession = getWebSession();
if (wicketSession == null) {
return;
}
if (LOG.isDebugEnabled()) {
LOG.debug("thread usage: " + wicketSession.getThreadUsage());
}
final AuthenticationSession authenticationSession = wicketSession.getAuthenticationSession();
if (authenticationSession == null) {
return;
}
getIsisContext().openSessionInstance(authenticationSession);
getTransactionManager().startTransaction();
}
@Override
protected synchronized void onEndRequest() {
final IsisSession session = getIsisContext().getSessionInstance();
if (session != null) {
// in session
commitTransactionIfAny();
getIsisContext().closeSessionInstance();
}
super.onEndRequest();
}
private void commitTransactionIfAny() {
final IsisTransaction transaction = getTransactionManager().getTransaction();
if (transaction != null) {
if (transaction.getState() == IsisTransaction.State.MUST_ABORT) {
getTransactionManager().abortTransaction();
} else if (transaction.getState() == IsisTransaction.State.IN_PROGRESS) {
getTransactionManager().endTransaction();
}
}
}
/**
* Factored out so can be overridden in testing.
*/
protected IsisContext getIsisContext() {
return IsisContext.getInstance();
}
/**
* Simply downcasts superclass' implementation, for convenience of callers.
*/
@Override
protected WebClientInfo newClientInfo() {
return (WebClientInfo) super.newClientInfo();
}
protected IsisTransactionManager getTransactionManager() {
return IsisContext.getTransactionManager();
}
}