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