Android Open Source - feedhive Column Channel






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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...

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Java Source Code

/******************************************************************************
 * Copyright (C) 2012, 2013, 2014/*  w  ww  .j  a va 2 s.co  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.db;

import android.provider.BaseColumns;

public enum ColumnChannel implements DB.Column {
    // Required Channel Elements
    TITLE           ("title",           "text",     "not null"),
    DESCRIPTION     ("description",     "text",     "not null"),

    // Columns for internal use.
    IMAGEBLOB       ("imageblob",       "blob",     "not null"), // image from channel tag.
    LASTUPDATE      ("lastupdate",      "integer",  "not null"), // time when channel is updated, lastly
    // For fast/simple comparison, flag of 'long' type is used instead of text.
    ACTION          ("action",          "integer",  "not null"),
    UPDATEMODE      ("updatemode",      "integer",  "not null"),
    // state of this channel : used / unused etc.
    // Why this is required?
    // When delete channel, deleting all items that are stored at DB, doesn't make sense.
    // Deleting channel means "I don't want to get feed anymore".
    // (This doesn't mean "I don't want to delete all items too.")
    // In this case, items of deleted channel still has foreign key to channel id.
    // So, deleting channel from DB leads to DB corruption - foreign key constraints is broken!
    // To avoid this, we can mark channel as 'unused' and keep in DB.
    // This can preserve DB constraints.
    // When, channel is re-used, we can do it by marking it as 'used'.
    STATE           ("state",           "integer",  "not null"),
    // time string of SECONDS OF DAY (0 - 23:59:59). ex. "3600/7200" => update 1 and 2 hour every day
    SCHEDUPDATETIME ("schedupdatetime", "text",     "not null"),
    // old last item id.
    // This is usually, last item id before update.
    // This will be updated to current last item id when user recognizes newly update items.
    // NOTE (WARNING)
    //   Recently inserted items SHOULD NOT be removed!
    //   (item ID indicated by 'OLDLAST_ITEMID' should be valid!)
    //   So, implement 'delete items' should be consider this constraints!
    OLDLAST_ITEMID  ("oldlastitemid",   "integer",  "not null"),
    // number of items to keep in item table.
    // This is not hard-limit but soft-limit!
    // (There is no reason to support hard-limit. Soft-limit is enough!)
    //
    // NOT USED YET! For future use.
    NRITEMS_SOFTMAX ("nritemssoftmax",  "integer",  "not null"),
    URL             ("url",             "text",     "not null"), // channel url of this rss.
    CATEGORYID      ("categoryid",      "integer",  ""),
    POSITION        ("position",        "integer",  "not null"), // position order used by UI.
    ID              (BaseColumns._ID,   "integer",  "primary key autoincrement, "
            + "FOREIGN KEY(categoryid) REFERENCES " + DB.TABLE_CATEGORY + "(" + ColumnCategory.ID.getName() + ")");


    private final String _mName;
    private final String _mType;
    private final String _mConstraint;

    ColumnChannel(String name, String type, String constraint) {
        _mName = name;
        _mType = type;
        _mConstraint = constraint;
    }
    @Override
    public String getName() { return _mName; }
    @Override
    public String getType() { return _mType; }
    @Override
    public String getConstraint() { return _mConstraint; }
}




Java Source Code List

free.yhc.feeder.AppWidgetCategoryChooserActivity.java
free.yhc.feeder.AppWidgetMenuActivity.java
free.yhc.feeder.AppWidgetUpdateCategoryActivity.java
free.yhc.feeder.AsyncAdapter.java
free.yhc.feeder.AsyncCursorAdapter.java
free.yhc.feeder.AsyncCursorListAdapter.java
free.yhc.feeder.ChannelListActivity.java
free.yhc.feeder.ChannelListAdapter.java
free.yhc.feeder.ChannelListFragment.java
free.yhc.feeder.ChannelListPagerAdapter.java
free.yhc.feeder.ChannelSettingActivity.java
free.yhc.feeder.DBManagerActivity.java
free.yhc.feeder.DiagAsyncTask.java
free.yhc.feeder.FeederActivity.java
free.yhc.feeder.FeederApp.java
free.yhc.feeder.FeederPreferenceActivity.java
free.yhc.feeder.FragmentPagerAdapterEx.java
free.yhc.feeder.ItemListActivity.java
free.yhc.feeder.ItemListAdapter.java
free.yhc.feeder.ItemViewActivity.java
free.yhc.feeder.LifeSupportService.java
free.yhc.feeder.NotiManager.java
free.yhc.feeder.PredefinedChannelActivity.java
free.yhc.feeder.ScheduledUpdateService.java
free.yhc.feeder.UiHelper.java
free.yhc.feeder.appwidget.AppWidgetUtils.java
free.yhc.feeder.appwidget.Provider.java
free.yhc.feeder.appwidget.UpdateService.java
free.yhc.feeder.appwidget.ViewsFactory.java
free.yhc.feeder.appwidget.ViewsService.java
free.yhc.feeder.db.ColumnCategory.java
free.yhc.feeder.db.ColumnChannel.java
free.yhc.feeder.db.ColumnItem.java
free.yhc.feeder.db.DBPolicy.java
free.yhc.feeder.db.DB.java
free.yhc.feeder.model.AssetSQLiteHelper.java
free.yhc.feeder.model.AtomParser.java
free.yhc.feeder.model.BGTaskDownloadToFile.java
free.yhc.feeder.model.BGTaskDownloadToItemContent.java
free.yhc.feeder.model.BGTaskManager.java
free.yhc.feeder.model.BGTaskUpdateChannel.java
free.yhc.feeder.model.BGTask.java
free.yhc.feeder.model.BaseBGTask.java
free.yhc.feeder.model.ContentsManager.java
free.yhc.feeder.model.DelayedAction.java
free.yhc.feeder.model.Environ.java
free.yhc.feeder.model.Err.java
free.yhc.feeder.model.FeedParser.java
free.yhc.feeder.model.FeedPolicy.java
free.yhc.feeder.model.Feed.java
free.yhc.feeder.model.FeederException.java
free.yhc.feeder.model.HtmlParser.java
free.yhc.feeder.model.ItemActionHandler.java
free.yhc.feeder.model.KeyBasedLinkedList.java
free.yhc.feeder.model.ListenerManager.java
free.yhc.feeder.model.NetLoader.java
free.yhc.feeder.model.RSSParser.java
free.yhc.feeder.model.RTTask.java
free.yhc.feeder.model.ThreadEx.java
free.yhc.feeder.model.UnexpectedExceptionHandler.java
free.yhc.feeder.model.UsageReport.java
free.yhc.feeder.model.Utils.java