org/sonews/storage/Storage.java
author cli
Mon, 24 Aug 2009 14:40:37 +0200
changeset 21 4b2c8bedb094
parent 14 efce4ec25564
child 24 2ff819fa5be1
permissions -rw-r--r--
Refactoring in CommandSelector to allow manually loading of plugins.
chris@3
     1
/*
chris@3
     2
 *   SONEWS News Server
chris@3
     3
 *   see AUTHORS for the list of contributors
chris@3
     4
 *
chris@3
     5
 *   This program is free software: you can redistribute it and/or modify
chris@3
     6
 *   it under the terms of the GNU General Public License as published by
chris@3
     7
 *   the Free Software Foundation, either version 3 of the License, or
chris@3
     8
 *   (at your option) any later version.
chris@3
     9
 *
chris@3
    10
 *   This program is distributed in the hope that it will be useful,
chris@3
    11
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
chris@3
    12
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
chris@3
    13
 *   GNU General Public License for more details.
chris@3
    14
 *
chris@3
    15
 *   You should have received a copy of the GNU General Public License
chris@3
    16
 *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
chris@3
    17
 */
chris@3
    18
chris@3
    19
package org.sonews.storage;
chris@3
    20
chris@3
    21
import java.util.List;
chris@3
    22
import org.sonews.feed.Subscription;
chris@3
    23
import org.sonews.util.Pair;
chris@3
    24
chris@3
    25
/**
chris@3
    26
 * A generic storage backend interface.
chris@3
    27
 * @author Christian Lins
chris@3
    28
 * @since sonews/1.0
chris@3
    29
 */
chris@3
    30
public interface Storage
chris@3
    31
{
chris@3
    32
cli@12
    33
  /**
cli@12
    34
   * Stores the given Article in the storage.
cli@12
    35
   * @param art
cli@12
    36
   * @throws StorageBackendException
cli@12
    37
   */
chris@3
    38
  void addArticle(Article art)
chris@3
    39
    throws StorageBackendException;
chris@3
    40
chris@3
    41
  void addEvent(long timestamp, int type, long groupID)
chris@3
    42
    throws StorageBackendException;
chris@3
    43
chris@3
    44
  void addGroup(String groupname, int flags)
chris@3
    45
    throws StorageBackendException;
chris@3
    46
chris@3
    47
  int countArticles()
chris@3
    48
    throws StorageBackendException;
chris@3
    49
chris@3
    50
  int countGroups()
chris@3
    51
    throws StorageBackendException;
chris@3
    52
chris@3
    53
  void delete(String messageID)
chris@3
    54
    throws StorageBackendException;
chris@3
    55
chris@3
    56
  Article getArticle(String messageID)
chris@3
    57
    throws StorageBackendException;
chris@3
    58
chris@3
    59
  Article getArticle(long articleIndex, long groupID)
chris@3
    60
    throws StorageBackendException;
chris@3
    61
chris@3
    62
  List<Pair<Long, ArticleHead>> getArticleHeads(Group group, long first, long last)
chris@3
    63
    throws StorageBackendException;
chris@3
    64
chris@3
    65
  List<Pair<Long, String>> getArticleHeaders(Channel channel, long start, long end,
chris@3
    66
    String header, String pattern)
chris@3
    67
    throws StorageBackendException;
chris@3
    68
chris@3
    69
  long getArticleIndex(Article art, Group group)
chris@3
    70
    throws StorageBackendException;
chris@3
    71
chris@3
    72
  List<Long> getArticleNumbers(long groupID)
chris@3
    73
    throws StorageBackendException;
chris@3
    74
chris@3
    75
  String getConfigValue(String key)
chris@3
    76
    throws StorageBackendException;
chris@3
    77
chris@3
    78
  int getEventsCount(int eventType, long startTimestamp, long endTimestamp,
chris@3
    79
    Channel channel)
chris@3
    80
    throws StorageBackendException;
chris@3
    81
chris@3
    82
  double getEventsPerHour(int key, long gid)
chris@3
    83
    throws StorageBackendException;
chris@3
    84
chris@3
    85
  int getFirstArticleNumber(Group group)
chris@3
    86
    throws StorageBackendException;
chris@3
    87
chris@3
    88
  Group getGroup(String name)
chris@3
    89
    throws StorageBackendException;
chris@3
    90
chris@3
    91
  List<Channel> getGroups()
chris@3
    92
    throws StorageBackendException;
chris@3
    93
cli@14
    94
  /**
cli@14
    95
   * Retrieves the collection of groupnames that are associated with the
cli@14
    96
   * given list address.
cli@14
    97
   * @param inetaddress
cli@14
    98
   * @return
cli@14
    99
   * @throws StorageBackendException
cli@14
   100
   */
cli@14
   101
  List<String> getGroupsForList(String listAddress)
chris@3
   102
    throws StorageBackendException;
chris@3
   103
chris@3
   104
  int getLastArticleNumber(Group group)
chris@3
   105
    throws StorageBackendException;
chris@3
   106
cli@12
   107
  /**
cli@12
   108
   * Returns a list of email addresses that are related to the given
cli@12
   109
   * groupname. In most cases the list may contain only one entry.
cli@12
   110
   * @param groupname
cli@12
   111
   * @return
cli@12
   112
   * @throws StorageBackendException
cli@12
   113
   */
cli@12
   114
  List<String> getListsForGroup(String groupname)
chris@3
   115
    throws StorageBackendException;
chris@3
   116
chris@3
   117
  String getOldestArticle()
chris@3
   118
    throws StorageBackendException;
chris@3
   119
chris@3
   120
  int getPostingsCount(String groupname)
chris@3
   121
    throws StorageBackendException;
chris@3
   122
chris@3
   123
  List<Subscription> getSubscriptions(int type)
chris@3
   124
    throws StorageBackendException;
chris@3
   125
chris@3
   126
  boolean isArticleExisting(String messageID)
chris@3
   127
    throws StorageBackendException;
chris@3
   128
chris@3
   129
  boolean isGroupExisting(String groupname)
chris@3
   130
    throws StorageBackendException;
chris@3
   131
chris@3
   132
  void purgeGroup(Group group)
chris@3
   133
    throws StorageBackendException;
chris@3
   134
chris@3
   135
  void setConfigValue(String key, String value)
chris@3
   136
    throws StorageBackendException;
chris@3
   137
chris@3
   138
  boolean update(Group group)
chris@3
   139
    throws StorageBackendException;
chris@3
   140
chris@3
   141
}