chris@3: /*
chris@3:  *   SONEWS News Server
chris@3:  *   see AUTHORS for the list of contributors
chris@3:  *
chris@3:  *   This program is free software: you can redistribute it and/or modify
chris@3:  *   it under the terms of the GNU General Public License as published by
chris@3:  *   the Free Software Foundation, either version 3 of the License, or
chris@3:  *   (at your option) any later version.
chris@3:  *
chris@3:  *   This program is distributed in the hope that it will be useful,
chris@3:  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
chris@3:  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
chris@3:  *   GNU General Public License for more details.
chris@3:  *
chris@3:  *   You should have received a copy of the GNU General Public License
chris@3:  *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
chris@3:  */
chris@3: package org.sonews.storage;
chris@3: 
chris@3: import java.sql.SQLException;
chris@3: import java.util.List;
chris@3: import org.sonews.util.Log;
chris@3: import org.sonews.util.Pair;
chris@3: 
chris@3: /**
chris@3:  * Represents a logical Group within this newsserver.
chris@3:  * @author Christian Lins
chris@3:  * @since sonews/0.5.0
chris@3:  */
cli@42: public class Group extends Channel {
chris@3: 
cli@47: 	/**
cli@47: 	 * If this flag is set the Group is no real newsgroup but a mailing list
cli@47: 	 * mirror. In that case every posting and receiving mails must go through
cli@47: 	 * the mailing list gateway.
cli@47: 	 */
cli@47: 	public static final int MAILINGLIST = 0x1;
cli@47: 
cli@47: 	/**
cli@47: 	 * If this flag is set the Group is marked as readonly and the posting
cli@47: 	 * is prohibited. This can be useful for groups that are synced only in
cli@47: 	 * one direction.
cli@47: 	 */
cli@47: 	public static final int READONLY = 0x2;
cli@47: 
cli@47: 	/**
cli@47: 	 * If this flag is set the Group is marked as deleted and must not occur
cli@47: 	 * in any output. The deletion is done lazily by a low priority daemon.
cli@47: 	 */
cli@47: 	public static final int DELETED = 0x80;
cli@47: 
cli@37: 	private long id = 0;
cli@37: 	private int flags = -1;
cli@37: 	private String name = null;
chris@3: 
cli@37: 	/**
cli@37: 	 * @return List of all groups this server handles.
cli@37: 	 */
cli@42: 	public static List<Channel> getAll() {
cli@37: 		try {
cli@37: 			return StorageManager.current().getGroups();
cli@37: 		} catch (StorageBackendException ex) {
cli@37: 			Log.get().severe(ex.getMessage());
cli@37: 			return null;
cli@37: 		}
cli@37: 	}
chris@3: 
cli@37: 	/**
cli@47: 	 * Constructor.
cli@37: 	 * @param name
cli@37: 	 * @param id
cli@47: 	 * @param flags
cli@37: 	 */
cli@42: 	public Group(final String name, final long id, final int flags) {
cli@37: 		this.id = id;
cli@37: 		this.flags = flags;
cli@37: 		this.name = name;
cli@37: 	}
chris@3: 
cli@37: 	@Override
cli@42: 	public boolean equals(Object obj) {
cli@37: 		if (obj instanceof Group) {
cli@37: 			return ((Group) obj).id == this.id;
cli@37: 		} else {
cli@37: 			return false;
cli@37: 		}
cli@37: 	}
chris@3: 
cli@37: 	public Article getArticle(long idx)
cli@42: 			throws StorageBackendException {
cli@37: 		return StorageManager.current().getArticle(idx, this.id);
cli@37: 	}
chris@3: 
cli@37: 	public List<Pair<Long, ArticleHead>> getArticleHeads(final long first, final long last)
cli@42: 			throws StorageBackendException {
cli@37: 		return StorageManager.current().getArticleHeads(this, first, last);
cli@37: 	}
chris@3: 
cli@37: 	public List<Long> getArticleNumbers()
cli@42: 			throws StorageBackendException {
cli@37: 		return StorageManager.current().getArticleNumbers(id);
cli@37: 	}
chris@3: 
cli@37: 	public long getFirstArticleNumber()
cli@42: 			throws StorageBackendException {
cli@37: 		return StorageManager.current().getFirstArticleNumber(this);
cli@37: 	}
chris@3: 
cli@42: 	public int getFlags() {
cli@37: 		return this.flags;
cli@37: 	}
chris@3: 
cli@37: 	public long getIndexOf(Article art)
cli@42: 			throws StorageBackendException {
cli@37: 		return StorageManager.current().getArticleIndex(art, this);
cli@37: 	}
chris@3: 
cli@37: 	/**
cli@37: 	 * Returns the group id.
cli@37: 	 */
cli@42: 	public long getInternalID() {
cli@37: 		assert id > 0;
cli@37: 		return id;
cli@37: 	}
chris@3: 
cli@42: 	public boolean isDeleted() {
cli@37: 		return (this.flags & DELETED) != 0;
cli@37: 	}
chris@3: 
cli@42: 	public boolean isMailingList() {
cli@37: 		return (this.flags & MAILINGLIST) != 0;
cli@37: 	}
chris@3: 
cli@42: 	public boolean isWriteable() {
cli@37: 		return true;
cli@37: 	}
chris@3: 
cli@37: 	public long getLastArticleNumber()
cli@42: 			throws StorageBackendException {
cli@37: 		return StorageManager.current().getLastArticleNumber(this);
cli@37: 	}
chris@3: 
cli@42: 	public String getName() {
cli@37: 		return name;
cli@37: 	}
chris@3: 
cli@37: 	/**
cli@37: 	 * Performs this.flags |= flag to set a specified flag and updates the data
cli@37: 	 * in the JDBCDatabase.
cli@37: 	 * @param flag
cli@37: 	 */
cli@42: 	public void setFlag(final int flag) {
cli@37: 		this.flags |= flag;
cli@37: 	}
chris@3: 
cli@47: 	public void unsetFlag(final int flag) {
cli@47: 		this.flags &= ~flag;
cli@47: 	}
cli@47: 
cli@42: 	public void setName(final String name) {
cli@37: 		this.name = name;
cli@37: 	}
cli@37: 
cli@37: 	/**
cli@37: 	 * @return Number of posted articles in this group.
cli@37: 	 * @throws java.sql.SQLException
cli@37: 	 */
cli@37: 	public long getPostingsCount()
cli@42: 			throws StorageBackendException {
cli@37: 		return StorageManager.current().getPostingsCount(this.name);
cli@37: 	}
cli@37: 
cli@37: 	/**
cli@37: 	 * Updates flags and name in the backend.
cli@37: 	 */
cli@37: 	public void update()
cli@42: 			throws StorageBackendException {
cli@37: 		StorageManager.current().update(this);
cli@37: 	}
chris@3: }