org/sonews/storage/impl/JDBCDatabaseProvider.java
author cli
Wed, 12 May 2010 11:18:02 +0200
changeset 31 087ef6fe6a1a
parent 30 146b3275b792
permissions -rw-r--r--
Group.getByName() removed. Channel.getByName() does no longer catch StorageBackendExceptions but throw them further.
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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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{
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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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  {
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    throw new UnsupportedOperationException("Not supported yet.");
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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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  {
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    try
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    {
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    if(!instances.containsKey(Thread.currentThread()))
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    {
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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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    }
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    else
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    {
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      return instances.get(Thread.currentThread());
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    }
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    }
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    catch(SQLException ex)
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    {
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      throw new StorageBackendException(ex);
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    }
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  }
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}