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/** |
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$Id: HdfsConnectionManagerActionFactory.java 1330 2011-04-01 08:16:40Z nicklas $ |
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Copyright (C) 2011 Nicklas Nordborg |
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This file is part of BASE - BioArray Software Environment. |
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Available at http://base.thep.lu.se/ |
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BASE is free software; you can redistribute it and/or |
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modify it under the terms of the GNU General Public License |
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as published by the Free Software Foundation; either version 3 |
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of the License, or (at your option) any later version. |
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BASE 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 BASE. If not, see <http://www.gnu.org/licenses/>. |
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*/ |
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package net.sf.basedb.xfiles.sftp; |
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import net.sf.basedb.core.DbControl; |
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import net.sf.basedb.core.plugin.About; |
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import net.sf.basedb.util.extensions.ActionFactory; |
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import net.sf.basedb.util.extensions.Extension; |
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import net.sf.basedb.util.extensions.ExtensionsUtil; |
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import net.sf.basedb.util.extensions.InvokationContext; |
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import net.sf.basedb.util.uri.ConnectionManagerFactory; |
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/** |
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Action factory for sftp connection manager factory. This factory |
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will create a singleton instance of {@link SftpConnectionManagerFactory} |
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upon the first use. This instance will be used for all further |
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uses of this extension. |
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@author Nicklas |
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@since 1.0 |
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*/ |
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public class SftpConnectionManagerActionFactory |
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implements ActionFactory<ConnectionManagerFactory> |
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{ |
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private volatile SftpConnectionManagerFactory factory; |
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public SftpConnectionManagerActionFactory() |
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{} |
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|
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/* |
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From the ActionFactory interface |
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--------------------------------- |
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*/ |
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@Override |
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public boolean prepareContext( |
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InvokationContext<? super ConnectionManagerFactory> context) |
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{ |
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return true; |
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} |
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|
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@Override |
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public ConnectionManagerFactory[] getActions( |
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InvokationContext<? super ConnectionManagerFactory> context) |
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{ |
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if (factory == null) |
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{ |
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initFactory(context); |
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} |
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if (context.getClientContext() != null) |
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{ |
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DbControl dc = context.getClientContext().getDbControl(); |
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if (dc != null && !dc.isClosed()) |
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{ |
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// Initialize a connection cache hooked up to the current transaction |
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SftpConnectionManager.CONNECTION_CACHE.init(dc); |
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} |
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} |
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return new ConnectionManagerFactory[] { factory }; |
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} |
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// -------------------------------------------- |
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private synchronized void initFactory(InvokationContext<?> context) |
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{ |
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if (factory != null) return; |
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Extension<?> ext = context.getExtension(); |
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About about = ext.getAbout(); |
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|
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String id = ext.getId(); |
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String name = ExtensionsUtil.getName(ext); |
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String description = about != null ? about.getDescription() : null; |
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SftpConnectionManagerFactory tmp = new SftpConnectionManagerFactory(); |
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tmp.init(id, name, description); |
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factory = tmp; |
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} |
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|
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} |