src/org/sonews/storage/impl/JDBCDatabaseProvider.java
author cli
Mon, 30 Aug 2010 00:20:06 +0200
changeset 39 73b21e9f3958
parent 37 74139325d305
child 42 7f84f4de2893
permissions -rw-r--r--
Some work on XDAEMON command.
     1 /*
     2  *   SONEWS News Server
     3  *   see AUTHORS for the list of contributors
     4  *
     5  *   This program is free software: you can redistribute it and/or modify
     6  *   it under the terms of the GNU General Public License as published by
     7  *   the Free Software Foundation, either version 3 of the License, or
     8  *   (at your option) any later version.
     9  *
    10  *   This program is distributed in the hope that it will be useful,
    11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
    12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    13  *   GNU General Public License for more details.
    14  *
    15  *   You should have received a copy of the GNU General Public License
    16  *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
    17  */
    18 
    19 package org.sonews.storage.impl;
    20 
    21 import java.sql.SQLException;
    22 import java.util.Map;
    23 import java.util.concurrent.ConcurrentHashMap;
    24 import org.sonews.storage.Storage;
    25 import org.sonews.storage.StorageBackendException;
    26 import org.sonews.storage.StorageProvider;
    27 
    28 /**
    29  *
    30  * @author Christian Lins
    31  * @since sonews/1.0
    32  */
    33 public class JDBCDatabaseProvider implements StorageProvider
    34 {
    35 
    36 	protected static final Map<Thread, JDBCDatabase> instances = new ConcurrentHashMap<Thread, JDBCDatabase>();
    37 
    38 	@Override
    39 	public boolean isSupported(String uri)
    40 	{
    41 		throw new UnsupportedOperationException("Not supported yet.");
    42 	}
    43 
    44 	@Override
    45 	public Storage storage(Thread thread)
    46 		throws StorageBackendException
    47 	{
    48 		try {
    49 			if (!instances.containsKey(Thread.currentThread())) {
    50 				JDBCDatabase db = new JDBCDatabase();
    51 				db.arise();
    52 				instances.put(Thread.currentThread(), db);
    53 				return db;
    54 			} else {
    55 				return instances.get(Thread.currentThread());
    56 			}
    57 		} catch (SQLException ex) {
    58 			throw new StorageBackendException(ex);
    59 		}
    60 	}
    61 }