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authorupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
committerupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
commit554fd8c5195424bdbcabf5de30fdc183aba391bd (patch)
tree976dc5ab7fddf506dadce60ae936f43f58787092 /libjava/classpath/java/rmi/activation/ActivationDesc.java
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+/* ActivationDesc.java -- record with info to activate an object
+ Copyright (c) 1996, 1997, 1998, 1999 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 java.rmi.activation;
+
+import java.io.Serializable;
+import java.rmi.MarshalledObject;
+
+/**
+ * Contains the information, necessary to activate the object. This information
+ * includes:
+ * <ul>
+ * <li>the object class name</li>
+ * <li>the object group identifier</li>
+ * <li>the code location (codebase URL) that can be used to load the class
+ * remotely</li>
+ * <li>the object restart mode</li>
+ * <li>the object specific intialization information</li>
+ * </ul>
+ *
+ * @author Audrius Meskauskas (audriusa@bioinformatics.org) (from stub)
+ */
+public final class ActivationDesc
+ implements Serializable
+{
+ /**
+ * Use SVUID for interoperability.
+ */
+ static final long serialVersionUID = 7455834104417690957L;
+
+ /**
+ * The group id.
+ */
+ private ActivationGroupID groupid;
+
+ /**
+ * The class name.
+ */
+ private String classname;
+
+ /**
+ * The code location URL.
+ */
+ private String location;
+
+ /**
+ * The object specific intitalization data.
+ */
+ private MarshalledObject<?> data;
+
+ /**
+ * The start mode.
+ */
+ private boolean restart;
+
+ /**
+ * Create the new activation description, assuming the object group is the
+ * {@link ActivationGroup#currentGroupID()}.
+ *
+ * @param className the object fully qualified class name
+ * @param location the code base URL
+ * @param data the object initialization data, contained in a marshalled form
+ */
+ public ActivationDesc(String className, String location, MarshalledObject<?> data)
+ throws ActivationException
+ {
+ this(ActivationGroup.currentGroupID(), className, location, data, false);
+ }
+
+ /**
+ * Create the new activation description, assuming the object group is the
+ * {@link ActivationGroup#currentGroupID()}.
+ *
+ * @param className the object fully qualified class name
+ * @param location the code base URL
+ * @param data the object initialization data, contained in a marshalled form
+ * @param restart specifies reactivation mode after crash. If true, the object
+ * is activated when activator is restarted or the activation group
+ * is restarted. If false, the object is only activated on demand.
+ * This flag does has no effect during the normal operation (the
+ * object is normally activated on demand).
+ */
+ public ActivationDesc(String className, String location,
+ MarshalledObject<?> data, boolean restart)
+ throws ActivationException
+ {
+ this(ActivationGroup.currentGroupID(), className, location, data, restart);
+ }
+
+ /**
+ * Create the new activation description. Under crash, the object will only
+ * be reactivated on demand.
+ *
+ * @param groupID the object group id.
+ * @param className the object fully qualified class name
+ * @param location the code base URL
+ * @param data the object initialization data, contained in a marshalled form
+ */
+ public ActivationDesc(ActivationGroupID groupID, String className,
+ String location, MarshalledObject<?> data)
+ {
+ this(groupID, className, location, data, false);
+ }
+
+ /**
+ * Create the new activation description, providing full information.
+ *
+ * @param groupID the object group id.
+ * @param className the object fully qualified class name
+ * @param location the code base URL
+ * @param data the object initialization data, contained in a marshalled form
+ * @param restart specifies reactivation mode after crash. If true, the object
+ * is activated when activator is restarted or the activation group
+ * is restarted. If false, the object is only activated on demand.
+ * This flag does has no effect during the normal operation (the
+ * object is normally activated on demand).
+ */
+ public ActivationDesc(ActivationGroupID groupID, String className,
+ String location, MarshalledObject<?> data, boolean restart)
+ {
+ this.groupid = groupID;
+ this.classname = className;
+ this.location = location;
+ this.data = data;
+ this.restart = restart;
+ }
+
+ public ActivationGroupID getGroupID()
+ {
+ return groupid;
+ }
+
+ /**
+ * Get the class name of the object being activated
+ *
+ * @return the fully qualified class name of the object being activated
+ */
+ public String getClassName()
+ {
+ return classname;
+ }
+
+ /**
+ * Get the code location URL ("codebase") of the object being activated.
+ *
+ * @return the codebase of the object being activated.
+ */
+ public String getLocation()
+ {
+ return location;
+ }
+
+ public MarshalledObject<?> getData()
+ {
+ return data;
+ }
+
+ /**
+ * Get the object reactivation strategy after crash.
+ *
+ * @return true ir the object is activated when activator is restarted or the
+ * activation group is restarted. False if the object is only
+ * activated on demand. This flag does has no effect during the normal
+ * operation (the object is normally activated on demand).
+ */
+ public boolean getRestartMode()
+ {
+ return restart;
+ }
+
+ /**
+ * Compare this object with another activation description for equality.
+ *
+ * @return true if all fields have the equal values, false otherwise.
+ */
+ public boolean equals(Object obj)
+ {
+ if (obj instanceof ActivationDesc)
+ {
+ ActivationDesc that = (ActivationDesc) obj;
+ return eq(groupid, that.groupid) &&
+ eq(classname, that.classname) &&
+ eq(location, that.location) &&
+ eq(data, that.data)
+ && restart == that.restart;
+ }
+ else
+ return false;
+ }
+
+ /**
+ * Get the hash code of this object (overridden to make the returned value
+ * consistent with .equals(..).
+ */
+ public int hashCode()
+ {
+ return hash(groupid) ^ hash(classname) ^
+ hash(location) ^ hash(data);
+ }
+
+ /**
+ * Get the hashcode of x or 0 if x == null.
+ */
+ static final int hash(Object x)
+ {
+ return x == null ? 0 : x.hashCode();
+ }
+
+ /**
+ * Compare by .equals if both a and b are not null, compare directly if at
+ * least one of them is null.
+ */
+ static final boolean eq(Object a, Object b)
+ {
+ if (a == null || b == null)
+ return a == b;
+ else
+ return a.equals(b);
+ }
+}