Android Open Source - feedhive B G Task Update Channel

From Project

Back to project page feedhive.

License

The source code is released under:

SOFTWARE LICENSE ---------------- Copyright (C) 2012, 2013, 2014 Younghyung Cho. <yhcting77@gmail.com> All rights reserved. This file is part of FeedHive This program is licensed under the FreeBSD l...

If you think the Android project feedhive listed in this page is inappropriate, such as containing malicious code/tools or violating the copyright, please email info at java2s dot com, thanks.

Java Source Code

/******************************************************************************
 * Copyright (C) 2012, 2013, 2014/*from w ww.j a  v  a2s  .c  o  m*/
 * Younghyung Cho. <yhcting77@gmail.com>
 * All rights reserved.
 *
 * This file is part of FeedHive
 *
 * This program is licensed under the FreeBSD license
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * The views and conclusions contained in the software and documentation
 * are those of the authors and should not be interpreted as representing
 * official policies, either expressed or implied, of the FreeBSD Project.
 *****************************************************************************/

package free.yhc.feeder.model;

public class BGTaskUpdateChannel extends BGTask<BGTaskUpdateChannel.Arg, Object> {
    private static final boolean DBG = false;
    private static final Utils.Logger P = new Utils.Logger(BGTaskUpdateChannel.class);

    private volatile NetLoader mLoader = null;

    public static class Arg {
        final long    cid;
        final String  customIconref;

        public Arg(long aCid) {
            cid = aCid;
            customIconref = null;
        }
        public Arg(long aCid, String aCustomIconref) {
            cid = aCid;
            customIconref = aCustomIconref;
        }

    }

    public
    BGTaskUpdateChannel(Arg arg) {
        super(arg, BGTask.OPT_WAKELOCK | BGTask.OPT_WIFILOCK);
    }

    @Override
    protected Err
    doBgTask(Arg arg) {
        try {
            mLoader = new NetLoader();
            if (null == arg.customIconref)
                mLoader.updateLoad(arg.cid);
            else
                mLoader.updateLoad(arg.cid, arg.customIconref);
        } catch (FeederException e) {
            //logI("BGTaskUpdateChannel : Updating [" + arg.cid + "] : interrupted!");
            return e.getError();
        }
        return Err.NO_ERR;
    }

    @Override
    public boolean
    cancel(Object param) {
        // I may misunderstand that canceling background task may corrupt DB
        //   by interrupting in the middle of transaction.
        // But java thread doesn't interrupt it's executing.
        // So, I don't worry about this (different from C.)
        super.cancel(param); // cancel thread
        if (null != mLoader)
            mLoader.cancel();     // This is HACK for fast-interrupt.
        return true;
    }
}

Java Source Code List