sonews-drupal: src/org/sonews/storage/Channel.java@fdfc7225f799

     1 /*

     2  *   SONEWS News Server

     3  *   see AUTHORS for the list of contributors

     4  *

     5  *   This program is free software: you can redistribute it and/or modify

     6  *   it under the terms of the GNU General Public License as published by

     7  *   the Free Software Foundation, either version 3 of the License, or

     8  *   (at your option) any later version.

     9  *

    10  *   This program is distributed in the hope that it will be useful,

    11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of

    12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

    13  *   GNU General Public License for more details.

    14  *

    15  *   You should have received a copy of the GNU General Public License

    16  *   along with this program.  If not, see <http://www.gnu.org/licenses/>.

    17  */

    19 package org.sonews.storage;

    21 import java.util.ArrayList;

    22 import java.util.List;

    23 import org.sonews.util.Pair;

    25 /**

    26  * A logical communication Channel is the a generic structural element for sets

    27  * of messages; e.g. a Newsgroup for a set of Articles.

    28  * A Channel can either be a real set of messages or an aggregated set of

    29  * several subsets.

    30  * @author Christian Lins

    31  * @since sonews/1.0

    32  */

    33 public abstract class Channel

    34 {

    36 	/**

    37 	 * If this flag is set the Group is no real newsgroup but a mailing list

    38 	 * mirror. In that case every posting and receiving mails must go through

    39 	 * the mailing list gateway.

    40 	 */

    41 	public static final int MAILINGLIST = 0x1;

    42 	/**

    43 	 * If this flag is set the Group is marked as readonly and the posting

    44 	 * is prohibited. This can be useful for groups that are synced only in

    45 	 * one direction.

    46 	 */

    47 	public static final int READONLY = 0x2;

    48 	/**

    49 	 * If this flag is set the Group is marked as deleted and must not occur

    50 	 * in any output. The deletion is done lazily by a low priority daemon.

    51 	 */

    52 	public static final int DELETED = 0x80;

    54 	public static List<Channel> getAll()

    55 	{

    56 		List<Channel> all = new ArrayList<Channel>();

    58 		/*List<Channel> agroups = AggregatedGroup.getAll();

    59 		if(agroups != null)

    60 		{

    61 		all.addAll(agroups);

    62 		}*/

    64 		List<Channel> groups = Group.getAll();

    65 		if (groups != null) {

    66 			all.addAll(groups);

    67 		}

    69 		return all;

    70 	}

    72 	public static Channel getByName(String name)

    73 		throws StorageBackendException

    74 	{

    75 		return StorageManager.current().getGroup(name);

    76 	}

    78 	public abstract Article getArticle(long idx)

    79 		throws StorageBackendException;

    81 	public abstract List<Pair<Long, ArticleHead>> getArticleHeads(

    82 		final long first, final long last)

    83 		throws StorageBackendException;

    85 	public abstract List<Long> getArticleNumbers()

    86 		throws StorageBackendException;

    88 	public abstract long getFirstArticleNumber()

    89 		throws StorageBackendException;

    91 	public abstract long getIndexOf(Article art)

    92 		throws StorageBackendException;

    94 	public abstract long getInternalID();

    96 	public abstract long getLastArticleNumber()

    97 		throws StorageBackendException;

    99 	public abstract String getName();

   101 	public abstract long getPostingsCount()

   102 		throws StorageBackendException;

   104 	public abstract boolean isDeleted();

   106 	public abstract boolean isWriteable();

   107 }

author	cli
	Sun, 29 Aug 2010 23:23:15 +0200
changeset 38	fdfc7225f799
parent 37	74139325d305
child 39	73b21e9f3958
permissions	-rw-r--r--