org.openscada.hds.test.HDSApplication5.java Source code

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Here is the source code for org.openscada.hds.test.HDSApplication5.java

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/*
 * This file is part of the openSCADA project
 * Copyright (C) 2006-2011 TH4 SYSTEMS GmbH (http://th4-systems.com)
 *
 * openSCADA is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License version 3
 * only, as published by the Free Software Foundation.
 *
 * OpenSCADA is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License version 3 for more details
 * (a copy is included in the LICENSE file that accompanied this code).
 *
 * You should have received a copy of the GNU Lesser General Public License
 * version 3 along with openSCADA. If not, see
 * <http://opensource.org/licenses/lgpl-3.0.html> for a copy of the LGPLv3 License.
 */

package org.openscada.hds.test;

import java.io.File;
import java.util.Date;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;

import org.apache.commons.io.FileUtils;
import org.openscada.hds.DataFileAccessor;
import org.openscada.hds.DataFileAccessorImpl;
import org.openscada.hds.DataFilePool;

public class HDSApplication5 {

    public static void main(final String[] args) throws Exception {
        final File base = new File("base", "data1");

        FileUtils.deleteDirectory(base.getParentFile());
        base.mkdirs();

        final DataFilePool pool = new DataFilePool(10000);

        final File file1 = new File(base, "f1");

        {
            final DataFileAccessorImpl accessor = DataFileAccessorImpl.create(file1, new Date(), new Date());
            accessor.dispose();
        }

        {
            final DataFileAccessor accessor1 = pool.getAccessor(file1);
            accessor1.dispose();
            System.out.println("Try 1");
        }

        {
            final DataFileAccessor accessor1 = pool.getAccessor(file1);
            accessor1.dispose();
            System.out.println("Try 2");
        }

        final ScheduledExecutorService executorService = Executors.newSingleThreadScheduledExecutor();

        {
            final DataFileAccessor accessor1 = pool.getAccessor(file1);

            try {
                System.out.println("Try 3 - 1");

                executorService.schedule(new Runnable() {
                    @Override
                    public void run() {
                        System.out.println("Dispose 1");
                        accessor1.dispose();
                        System.out.println("Disposed 1");
                    }
                }, 3000, TimeUnit.MILLISECONDS);

                final DataFileAccessor accessor2 = pool.getAccessor(file1);

                if (accessor2 != null) {
                    System.out.println("Finally received");
                    accessor2.dispose();
                }
            } finally {
                accessor1.dispose();
            }
            System.out.println("Try 3 - 2");

            accessor1.dispose();
        }

        {
            final DataFileAccessor accessor1 = pool.getAccessor(file1);
            accessor1.dispose();
            System.out.println("Try 4");
        }

        pool.dispose();

        executorService.shutdown();
    }
}