001/*
002 * (C) Copyright 2006-2007 Nuxeo SAS (http://nuxeo.com/) and contributors.
003 *
004 * All rights reserved. This program and the accompanying materials
005 * are made available under the terms of the GNU Lesser General Public License
006 * (LGPL) version 2.1 which accompanies this distribution, and is available at
007 * http://www.gnu.org/licenses/lgpl.html
008 *
009 * This library is distributed in the hope that it will be useful,
010 * but WITHOUT ANY WARRANTY; without even the implied warranty of
011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
012 * Lesser General Public License for more details.
013 *
014 * Contributors:
015 *     Nuxeo - initial API and implementation
016 *
017 * $Id$
018 */
019
020package org.nuxeo.ecm.platform.ui.web.util;
021
022import static org.jboss.seam.ScopeType.APPLICATION;
023
024import java.io.Serializable;
025
026import javax.naming.NamingException;
027
028import org.apache.commons.logging.Log;
029import org.apache.commons.logging.LogFactory;
030import org.jboss.seam.annotations.Create;
031import org.jboss.seam.annotations.In;
032import org.jboss.seam.annotations.Name;
033import org.jboss.seam.annotations.Scope;
034import org.jboss.seam.annotations.Startup;
035import org.jboss.seam.core.Init;
036import org.nuxeo.launcher.config.ConfigurationGenerator;
037import org.nuxeo.runtime.transaction.TransactionHelper;
038
039/**
040 * Component that updates the Seam configuration as needed when app starts
041 *
042 * @author Thierry Delprat
043 */
044@Name("NuxeoSeamConfigurator")
045@Scope(APPLICATION)
046@Startup
047public class SeamConfigurator implements Serializable {
048
049    private static final long serialVersionUID = 178687658975L;
050
051    private static final Log log = LogFactory.getLog(SeamConfigurator.class);
052
053    @In(value = "org.jboss.seam.core.init")
054    transient Init init;
055
056    public boolean isDebugEnabled() {
057        String prop = System.getProperty(ConfigurationGenerator.SEAM_DEBUG_SYSTEM_PROP);
058        if (prop == null) {
059            return false;
060        }
061        return Boolean.parseBoolean(prop);
062    }
063
064    @Create
065    public void init() {
066        // FIXME: this init is done too late: debug components have already
067        // been scanned and not installed => debug page will not work if
068        // available (needs jar jboss-seam-debug to be available)
069        init.setDebug(isDebugEnabled());
070        init.setJbpmInstalled(false);
071        try {
072            TransactionHelper.lookupUserTransaction();
073            log.info("Activate Seam transaction support");
074            init.setTransactionManagementEnabled(true);
075        } catch (NamingException e) {
076            log.info("Deactivate Seam transaction support (no tx manager)");
077            init.setTransactionManagementEnabled(false);
078        }
079    }
080}