Java Activatable类代码示例

import java.rmi.activation.Activatable; //导入依赖的package包/类
/**
* The group's <code>inactiveObject</code> method is called
* indirectly via a call to the <code>Activatable.inactive</code>
* method. A remote object implementation must call
* <code>Activatable</code>'s <code>inactive</code> method when
* that object deactivates (the object deems that it is no longer
* active). If the object does not call
* <code>Activatable.inactive</code> when it deactivates, the
* object will never be garbage collected since the group keeps
* strong references to the objects it creates. <p>
*
* The group's <code>inactiveObject</code> method
* unexports the remote object from the RMI runtime so that the
* object can no longer receive incoming RMI calls. This call will
* only succeed if the object has no pending/executing calls. If
* the object does have pending/executing RMI calls, then false
* will be returned.
*
* If the object has no pending/executing calls, the object is
* removed from the RMI runtime and the group informs its
* <code>ActivationMonitor</code> (via the monitor's
* <code>inactiveObject</code> method) that the remote object is
* not currently active so that the remote object will be
* re-activated by the activator upon a subsequent activation
* request.
*
* @param id the object's activation identifier
* @returns true if the operation succeeds (the operation will
* succeed if the object in currently known to be active and is
* either already unexported or is currently exported and has no
* pending/executing calls); false is returned if the object has
* pending/executing calls in which case it cannot be deactivated
* @exception UnknownObjectException if object is unknown (may already
* be inactive)
* @exception RemoteException if call informing monitor fails
*/
public boolean inactiveObject(ActivationID id)
    throws ActivationException, UnknownObjectException, RemoteException
{

    try {
        acquireLock(id);
        synchronized (this) {
            if (groupInactive == true)
                throw new ActivationException("group is inactive");
        }

        ActiveEntry entry = active.get(id);
        if (entry == null) {
            // REMIND: should this be silent?
            throw new UnknownObjectException("object not active");
        }

        try {
            if (Activatable.unexportObject(entry.impl, false) == false)
                return false;
        } catch (NoSuchObjectException allowUnexportedObjects) {
        }

        try {
            super.inactiveObject(id);
        } catch (UnknownObjectException allowUnregisteredObjects) {
        }

        active.remove(id);

    } finally {
        releaseLock(id);
        checkInactiveGroup();
    }

    return true;
}
 

import java.rmi.activation.Activatable; //导入依赖的package包/类
/**
* The group's <code>inactiveObject</code> method is called
* indirectly via a call to the <code>Activatable.inactive</code>
* method. A remote object implementation must call
* <code>Activatable</code>'s <code>inactive</code> method when
* that object deactivates (the object deems that it is no longer
* active). If the object does not call
* <code>Activatable.inactive</code> when it deactivates, the
* object will never be garbage collected since the group keeps
* strong references to the objects it creates. <p>
*
* The group's <code>inactiveObject</code> method
* unexports the remote object from the RMI runtime so that the
* object can no longer receive incoming RMI calls. This call will
* only succeed if the object has no pending/executing calls. If
* the object does have pending/executing RMI calls, then false
* will be returned.
*
* If the object has no pending/executing calls, the object is
* removed from the RMI runtime and the group informs its
* <code>ActivationMonitor</code> (via the monitor's
* <code>inactiveObject</code> method) that the remote object is
* not currently active so that the remote object will be
* re-activated by the activator upon a subsequent activation
* request.
*
* @param id the object's activation identifier
* @return true if the operation succeeds (the operation will
* succeed if the object in currently known to be active and is
* either already unexported or is currently exported and has no
* pending/executing calls); false is returned if the object has
* pending/executing calls in which case it cannot be deactivated
* @exception UnknownObjectException if object is unknown (may already
* be inactive)
* @exception RemoteException if call informing monitor fails
*/
public boolean inactiveObject(ActivationID id)
    throws ActivationException, UnknownObjectException, RemoteException
{

    try {
        acquireLock(id);
        synchronized (this) {
            if (groupInactive == true)
                throw new ActivationException("group is inactive");
        }

        ActiveEntry entry = active.get(id);
        if (entry == null) {
            // REMIND: should this be silent?
            throw new UnknownObjectException("object not active");
        }

        try {
            if (Activatable.unexportObject(entry.impl, false) == false)
                return false;
        } catch (NoSuchObjectException allowUnexportedObjects) {
        }

        try {
            super.inactiveObject(id);
        } catch (UnknownObjectException allowUnregisteredObjects) {
        }

        active.remove(id);

    } finally {
        releaseLock(id);
        checkInactiveGroup();
    }

    return true;
}
 

import java.rmi.activation.Activatable; //导入依赖的package包/类
public DownloadActivationGroup(ActivationID id, MarshalledObject mobj)
    throws ActivationException, RemoteException
{
    this.id = id;
    Activatable.exportObject(this, id, 0);
    System.err.println("object activated in group");
}
 

import java.rmi.activation.Activatable; //导入依赖的package包/类
public boolean inactiveObject(ActivationID id) throws ActivationException,
        UnknownObjectException, RemoteException {
    ActiveObject ao = (ActiveObject) active_objects.get(id);
    if (ao == null) {
        // rmi.93=Object was not registered or already deactivated.
        throw new UnknownObjectException(Messages.getString("rmi.93")); //$NON-NLS-1$
    }

    Activatable.unexportObject(ao.getImpl(), false);
    super.inactiveObject(id);
    active_objects.remove(id);
    return true;
}
 

import java.rmi.activation.Activatable; //导入依赖的package包/类
public void testSimpleInstall() throws Exception {
    try {
        Properties props = new Properties();
        ActivationGroupDesc groupDesc = new ActivationGroupDesc(props, null);

        System.out.println("groupDesc = " + groupDesc);

        System.out.flush();
        ActivationSystem as = ActivationGroup.getSystem();

        System.out.println("ActivationSystem = " + as);

        ActivationGroupID groupID = as.registerGroup(groupDesc);
        System.out.println("groupID = " + groupID);
        System.out.println("Activation group descriptor registered.");

        MarshalledObject data = new MarshalledObject("HelloImpl");
        System.out.println("MarshalledObject data = " + data);

        ActivationDesc desc = new ActivationDesc(groupID, "org.apache.harmony.rmi.tests.java.rmi.activation.HelloImpl", "", null);
        System.out.println("Registering ActivationDesc:");
        Remote stub = Activatable.register(desc);
        System.out.println("Activation descriptor registered: " + stub);

        Registry reg = LocateRegistry.getRegistry();
        System.out.println("Registry = " + reg);

        reg.rebind("HelloImpl_Stub", stub);
        System.out.println("Stub bound in registry.");
    } catch (Throwable t) {
        System.out.println("Exception in HelloInstaller: " + t);
        t.printStackTrace();
        fail("Exception in HelloInstaller: " + t);
    }
}
 

import java.rmi.activation.Activatable; //导入依赖的package包/类
public void testInactive001() {
    try {
        Activatable.inactive(null);
        fail(msgRaise + "ActivationException");
    } catch (ActivationException ae) {
    } catch (Throwable e) {
        fail("Failed with:" + e);
    }
}
 

import java.rmi.activation.Activatable; //导入依赖的package包/类
public void testInactive002() {
    try {
        Activatable.inactive(new ActivationID(null));
        fail(msgRaise + "ActivationException");
    } catch (ActivationException ae) {
    } catch (Throwable e) {
        fail("Failed with:" + e);
    }
}
 

import java.rmi.activation.Activatable; //导入依赖的package包/类
public void testInactive003() {
    try {
        ActivationID aid = new ActivationID(ac);
        aid.activate(false);
        Activatable.inactive(aid);
    } catch (Throwable e) {
        fail("Failed with:" + e);
    }
}
 

import java.rmi.activation.Activatable; //导入依赖的package包/类
public static void main(String[] args) {

        RMID rmid = null;

        System.out.println("\nRegression test for bug 4510355\n");

        try {
            TestLibrary.suggestSecurityManager("java.lang.SecurityManager");

            /*
             * Install group class file in codebase.
             */
            System.err.println("install class file in codebase");
            URL groupURL = TestLibrary.installClassInCodebase(
                                  "MyActivationGroupImpl", "group");
            System.err.println("class file installed");

            /*
             * Start rmid.
             */
            RMID.removeLog();
            rmid = RMID.createRMIDOnEphemeralPort();
            String execPolicyOption = "-Dsun.rmi.activation.execPolicy=none";
            rmid.addOptions(new String[] { execPolicyOption });
            rmid.start();

            /*
             * Create and register descriptors for custom group and an
             * activatable object in that group.
             */
            System.err.println("register group");

            Properties p = new Properties();
            p.put("java.security.policy", TestParams.defaultGroupPolicy);
            CommandEnvironment cmd = new ActivationGroupDesc.CommandEnvironment(
                    null,
                    new String[] {
                        "--add-exports=java.rmi/sun.rmi.registry=ALL-UNNAMED",
                        "--add-exports=java.rmi/sun.rmi.server=ALL-UNNAMED",
                        "--add-exports=java.rmi/sun.rmi.transport=ALL-UNNAMED",
                        "--add-exports=java.rmi/sun.rmi.transport.tcp=ALL-UNNAMED" });

            ActivationGroupDesc groupDesc =
                new ActivationGroupDesc("MyActivationGroupImpl",
                                        groupURL.toExternalForm(),
                                        null, p, cmd);
            ActivationGroupID groupID =
                ActivationGroup.getSystem().registerGroup(groupDesc);


            System.err.println("register activatable object");
            ActivationDesc desc =
                new ActivationDesc(groupID, "DownloadActivationGroup",
                                   null, null);
            Ping obj = (Ping) Activatable.register(desc);

            /*
             * Start group (by calling ping).
             */
            System.err.println(
                "ping object (forces download of group's class)");
            obj.ping();
            System.err.println(
                "TEST PASSED: group's class downloaded successfully");
            System.err.println("shutdown object");
            obj.shutdown();
            System.err.println("TEST PASSED");

        } catch (Exception e) {
            TestLibrary.bomb(e);
        } finally {
            rmid.cleanup();
        }
    }
 

import java.rmi.activation.Activatable; //导入依赖的package包/类
public static void main(String[] args) {

        RMID rmid = null;

        System.out.println("\nRegression test for bug 4510355\n");

        try {
            TestLibrary.suggestSecurityManager("java.lang.SecurityManager");

            /*
             * Install group class file in codebase.
             */
            System.err.println("install class file in codebase");
            URL groupURL = TestLibrary.installClassInCodebase(
                                  "MyActivationGroupImpl", "group");
            System.err.println("class file installed");

            /*
             * Start rmid.
             */
            RMID.removeLog();
            rmid = RMID.createRMID();
            String execPolicyOption = "-Dsun.rmi.activation.execPolicy=none";
            rmid.addOptions(new String[] { execPolicyOption });
            rmid.start();

            /*
             * Create and register descriptors for custom group and an
             * activatable object in that group.
             */
            System.err.println("register group");

            Properties p = new Properties();
            p.put("java.security.policy", TestParams.defaultGroupPolicy);
            CommandEnvironment cmd = new ActivationGroupDesc.CommandEnvironment(
                    null,
                    new String[] {
                        "-XaddExports:java.rmi/sun.rmi.registry=ALL-UNNAMED",
                        "-XaddExports:java.rmi/sun.rmi.server=ALL-UNNAMED",
                        "-XaddExports:java.rmi/sun.rmi.transport=ALL-UNNAMED",
                        "-XaddExports:java.rmi/sun.rmi.transport.tcp=ALL-UNNAMED" });

            ActivationGroupDesc groupDesc =
                new ActivationGroupDesc("MyActivationGroupImpl",
                                        groupURL.toExternalForm(),
                                        null, p, cmd);
            ActivationGroupID groupID =
                ActivationGroup.getSystem().registerGroup(groupDesc);


            System.err.println("register activatable object");
            ActivationDesc desc =
                new ActivationDesc(groupID, "DownloadActivationGroup",
                                   null, null);
            Ping obj = (Ping) Activatable.register(desc);

            /*
             * Start group (by calling ping).
             */
            System.err.println(
                "ping object (forces download of group's class)");
            obj.ping();
            System.err.println(
                "TEST PASSED: group's class downloaded successfully");
            System.err.println("shutdown object");
            obj.shutdown();
            System.err.println("TEST PASSED");

        } catch (Exception e) {
            TestLibrary.bomb(e);
        } finally {
            rmid.cleanup();
        }
    }