src/org/sonews/storage/impl/HSQLDB.java
author František Kučera <franta-hg@frantovo.cz>
Fri Oct 21 18:21:30 2011 +0200 (2011-10-21)
changeset 105 d566d08c20d6
parent 45 7e24949b87b0
permissions -rw-r--r--
Drupal: lepší názvy proměnných.
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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.impl;
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import java.sql.SQLException;
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import org.sonews.storage.Group;
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import org.sonews.storage.Storage;
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/**
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 * A specialized JDBCDatabase supporting HSQLDB.
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 * @author Christian Lins
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 * @since sonews/1.1
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 */
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public class HSQLDB extends JDBCDatabase implements Storage {
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	@Override
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	protected void prepareAddGroupStatement() throws SQLException {
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		this.pstmtAddGroup0 = conn.prepareStatement(
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				"INSERT INTO groups (name, flags, group_id) VALUES (?, ?, IDENTITY())");
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	}
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	@Override
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	protected void prepareCountGroupsStatement() throws SQLException {
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		this.pstmtCountGroups = conn.prepareStatement(
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				"SELECT Count(group_id) FROM groups WHERE "
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				+ "BITAND(flags, " + Group.DELETED + ") = 0");
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	}
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	@Override
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	protected void prepareGetPostingsCountStatement() throws SQLException {
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		this.pstmtGetPostingsCount = conn.prepareStatement(
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				"SELECT Count(*) FROM postings JOIN groups "
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				+ "ON groups.name = ? GROUP BY groups.name");
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	}
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	@Override
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	protected void prepareGetSubscriptionsStatement() throws SQLException {
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		this.pstmtGetSubscriptions = conn.prepareStatement(
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				"SELECT * FROM (SELECT feedtype, host, port, peer_id FROM peers JOIN "
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				+ "peer_subscriptions ON peers.peer_id = peer_subscriptions.peer_id) "
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				+ "JOIN groups ON group_id = groups.group_id WHERE feedtype = ?");
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	}
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}