ch.elexis.core.application.Desk.java Source code

Introduction

Here is the source code for ch.elexis.core.application.Desk.java

Source

/*******************************************************************************
 * Copyright (c) 2013-2014 MEDEVIT <office@medevit.at>.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *     MEDEVIT <office@medevit.at> - initial API and implementation
 ******************************************************************************/
package ch.elexis.core.application;

import java.util.Map;

import org.eclipse.equinox.app.IApplication;
import org.eclipse.equinox.app.IApplicationContext;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.internal.WorkbenchPlugin;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import ch.elexis.core.application.advisors.ApplicationWorkbenchAdvisor;
import ch.elexis.core.application.advisors.Messages;
import ch.elexis.core.constants.Preferences;
import ch.elexis.core.data.activator.CoreHub;
import ch.elexis.core.data.constants.ElexisSystemPropertyConstants;
import ch.elexis.core.data.extension.AbstractCoreOperationAdvisor;
import ch.elexis.core.data.extension.CoreOperationExtensionPoint;
import ch.elexis.core.data.preferences.CorePreferenceInitializer;
import ch.elexis.core.data.util.LocalLock;
import ch.elexis.core.ui.UiDesk;
import ch.elexis.data.PersistentObject;
import ch.rgw.io.FileTool;

public class Desk implements IApplication {

    private Logger log = LoggerFactory.getLogger(Desk.class);
    private static Map<String, String> args = null;

    protected static AbstractCoreOperationAdvisor cod = null;

    /**
     * @since 3.0.0 log-in has been moved from ApplicationWorkbenchAdvisor to this method
     */
    @Override
    public Object start(IApplicationContext context) throws Exception {
        // register ElexisEvent and MessageEvent listeners
        log.debug("Registering " + CoreEventListenerRegistrar.class.getName());
        new CoreEventListenerRegistrar();

        // Check if we "are complete" - throws Error if not
        cod = CoreOperationExtensionPoint.getCoreOperationAdvisor();

        if (System.getProperty(ElexisSystemPropertyConstants.OPEN_DB_WIZARD) != null) {
            cod.requestDatabaseConnectionConfiguration();
        }

        // connect to the database
        try {
            if (PersistentObject.connect(CoreHub.localCfg) == false)
                log.error(PersistentObject.class.getName() + " initialization failed.");
        } catch (Throwable pe) {
            // error in database connection, we have to exit
            log.error("Database connection error", pe);
            pe.printStackTrace();

            Shell shell = PlatformUI.createDisplay().getActiveShell();
            StringBuilder sb = new StringBuilder();
            sb.append("Could not open database connection. Quitting Elexis.\n\n");
            sb.append("Message: " + pe.getMessage() + "\n\n");
            while (pe.getCause() != null) {
                pe = pe.getCause();
                sb.append("Reason: " + pe.getMessage() + "\n");
            }
            sb.append("\n\nWould you like to re-configure the database connection?");
            boolean retVal = MessageDialog.openQuestion(shell, "Error in database connection", sb.toString());

            if (retVal) {
                cod.requestDatabaseConnectionConfiguration();
            }

            return IApplication.EXIT_OK;
        }

        // check for initialization parameters
        args = context.getArguments();
        if (args.containsKey("--clean-all")) { //$NON-NLS-1$
            String p = CorePreferenceInitializer.getDefaultDBPath();
            FileTool.deltree(p);
            CoreHub.localCfg.clear();
            CoreHub.localCfg.flush();
        }

        // check if we should warn of too many instances
        if (CoreHub.isTooManyInstances()) {
            MessageDialog.openWarning(UiDesk.getDisplay().getActiveShell(), Messages.Warning_tooManyTitle,
                    Messages.Warning_tooManyMessage + CoreHub.getWritableUserDir().getAbsolutePath());
        }

        // care for log-in
        WorkbenchPlugin.unsetSplashShell(UiDesk.getDisplay());
        cod.performLogin(UiDesk.getDisplay().getActiveShell());
        if ((CoreHub.actUser == null) || !CoreHub.actUser.isValid()) {
            // no valid user, exit (don't consider this as an error)
            log.warn("Exit because no valid user logged-in"); //$NON-NLS-1$
            PersistentObject.disconnect();
            System.exit(0);
        }
        // make sure identifiers are initialized
        initIdentifiers();

        // start the workbench
        try {
            int returnCode = PlatformUI.createAndRunWorkbench(UiDesk.getDisplay(),
                    new ApplicationWorkbenchAdvisor());
            // Die Funktion kehrt erst beim Programmende zurck.
            CoreHub.heart.suspend();
            CoreHub.localCfg.flush();
            if (CoreHub.globalCfg != null) {
                CoreHub.globalCfg.flush();
            }
            if (returnCode == PlatformUI.RETURN_RESTART) {
                return IApplication.EXIT_RESTART;
            }
            return IApplication.EXIT_OK;
        } catch (Exception ex) {
            log.error("Exception caught", ex);
            ex.printStackTrace();
            return -1;
        }
    }

    protected void initIdentifiers() {
        if (CoreHub.globalCfg.get(Preferences.INSTALLATION_TIMESTAMP, null) == null) {
            LocalLock localLock = new LocalLock("initInstallationTimestamp");
            if (localLock.tryLock()) {
                CoreHub.globalCfg.set(Preferences.INSTALLATION_TIMESTAMP,
                        Long.toString(System.currentTimeMillis()));
                CoreHub.globalCfg.flush();
            }
            localLock.unlock();
        }
        // TODO add elexis OID if available
        CoreHub.localCfg.set(ch.elexis.core.constants.Preferences.SOFTWARE_OID, "");
        CoreHub.localCfg.flush();
    }

    @Override
    public void stop() {
    }
}