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+/* DefaultActivationSystem.java -- Default RMI activation system
+ Copyright (C) 2006 Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU Classpath is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING. If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library. Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module. An independent module is a module which is not derived from
+or based on this library. If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so. If you do not wish to do so, delete this
+exception statement from your version. */
+
+
+package gnu.java.rmi.activation;
+
+import java.rmi.activation.ActivationSystem;
+import java.rmi.registry.LocateRegistry;
+import java.rmi.registry.Registry;
+
+/**
+ * Finds and returns the default activation system for this jre.
+ *
+ * @author Audrius Meskauskas (audriusa@bioinformatics.org)
+ */
+public abstract class DefaultActivationSystem
+{
+ /**
+ * The activation system (assigned if once found).
+ */
+ static ActivationSystem system;
+
+ /**
+ * The default activation registry port.
+ */
+ static int ACTIVATION_REGISTRY_PORT;
+
+ /**
+ * The name of the activation system registry port property.
+ */
+ static String AS_PORT_PROPERTY = "java.rmi.activation.port";
+
+ /**
+ * The defalut name of the activation system in the activation registry.
+ */
+ static String ACTIVATION_SYSTEM_NAME = "java.rmi.activation.ActivationSystem";
+
+ /**
+ * Get the activation system, default for this jre. If no external activation
+ * system exists, the internal activation system will be activated. This
+ * internal system is limited in capabilities and should be used exclusively
+ * for automated testing, to avoid necessity of starting rmi daemon during
+ * testing process.
+ */
+ public static ActivationSystem get()
+ {
+ if (system == null)
+ try
+ {
+ // Obtain the port:
+ String asr = System.getProperty("java.rmi.activation.port");
+
+ if (asr != null)
+ {
+ try
+ {
+ ACTIVATION_REGISTRY_PORT = Integer.parseInt(asr);
+ if (ACTIVATION_REGISTRY_PORT <= 0)
+ throw new InternalError("Invalid " + asr + " value, "
+ + ACTIVATION_REGISTRY_PORT);
+ }
+ catch (NumberFormatException e)
+ {
+ throw new InternalError("Unable to parse " + asr
+ + " to integer");
+ }
+ }
+ else
+ ACTIVATION_REGISTRY_PORT = ActivationSystem.SYSTEM_PORT;
+
+ // Expect the naming service running first.
+ // The local host may want to use the shared registry
+ Registry r = LocateRegistry.getRegistry(ACTIVATION_REGISTRY_PORT);
+ ActivationSystem system = (ActivationSystem) r.lookup(ACTIVATION_SYSTEM_NAME);
+ return system;
+ }
+ catch (Exception ex)
+ {
+ system = ActivationSystemTransient.getInstance();
+ }
+
+ return system;
+ }
+}