src/org/sonews/storage/impl/JDBCDatabaseProvider.java
author František Kučera <franta-hg@frantovo.cz>
Wed Dec 31 12:07:40 2014 +0100 (2014-12-31)
changeset 120 bb1c8a7b774c
parent 44 5d7d1adf387f
permissions -rwxr-xr-x
XSLT: licence – GNU GPLv3
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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 java.util.Map;
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import java.util.concurrent.ConcurrentHashMap;
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import org.sonews.storage.Storage;
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import org.sonews.storage.StorageBackendException;
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import org.sonews.storage.StorageProvider;
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/**
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 *
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 * @author Christian Lins
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 * @since sonews/1.0
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 */
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public class JDBCDatabaseProvider implements StorageProvider {
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	protected static final Map<Thread, JDBCDatabase> instances =
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			new ConcurrentHashMap<Thread, JDBCDatabase>();
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	@Override
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	public boolean isSupported(String uri) {
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		return uri.startsWith("jdbc:mysql") || uri.startsWith("jdbc:postgresql");
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	}
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	@Override
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	public Storage storage(Thread thread)
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			throws StorageBackendException {
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		try {
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			if (!instances.containsKey(Thread.currentThread())) {
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				JDBCDatabase db = new JDBCDatabase();
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				db.arise();
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				instances.put(Thread.currentThread(), db);
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				return db;
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			} else {
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				return instances.get(Thread.currentThread());
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			}
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		} catch (SQLException ex) {
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			throw new StorageBackendException(ex);
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		}
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	}
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}