RE: RE: [Mx4j-user] RE: Hessian connector

Simon, I'm not sure what's RFE?

 

  _____  

From: [email protected]
[mailto:[email protected]] On Behalf Of Bordet, Simone
Sent: Sunday, July 10, 2005 6:06 PM
To: [email protected]; [email protected]
Subject: RE: [Mx4j-devel] RE: [Mx4j-user] RE: Hessian connector

 

Adrian,

 

please file a RFE on SourceForge about this, so it will not be forget.

I'll try to kick it in for the next release.

Thanks for the exploration: knowing that the RFE will be simple to implement
is of great help.

Please report any problem you have with your implementation, it will
simplify the realization of the RFE.

 

Regards,

 

Simon

 


  _____  


From: [email protected]
[mailto:[email protected]] On Behalf Of
[email protected]
Sent: Friday, July 08, 2005 18:48
To: [email protected]
Subject: [Mx4j-devel] RE: [Mx4j-user] RE: Hessian connector

Hi Bordet,

 

Me again. After I change Hessian version to 3.0.13, rebuild MX4J(after
changes serializer and deserialize to be compatible with the new API, see
bellow) and I made a few tests

Everything seems to be ok, at lease for my application. In deserializer I
throw some exceptions in some new methods, just to know if it will use that
new API.

 

Do you think is possible to use Hessin 3.0.13 in the next release, and when
it is planned?

 

 

public Object readObject(AbstractHessianInput in) throws IOException {

        throw new RuntimeException("If you are here, something is wrong
:)");

    }

 

    public Object readList(AbstractHessianInput in, int length) throws
IOException {

        throw new RuntimeException("If you are here, something is wrong
:)");

    }

 

 

 

----------------------------------------------------------------------------
---------------------------------------------------

/*

 * Copyright (C) The MX4J Contributors.

 * All rights reserved.

 *

 * This software is distributed under the terms of the MX4J License version
1.0.

 * See the terms of the MX4J License in the documentation provided with this
software.

 */

 

package mx4j.tools.remote.caucho.serialization;

 

import java.io.ByteArrayOutputStream;

import java.io.IOException;

import java.io.ObjectOutputStream;

 

import com.caucho.hessian.io.AbstractHessianOutput;

import com.caucho.hessian.io.Serializer;

 

/**

 * @version $Revision: 1.3 $

 */

class JMXSerializer implements Serializer

{

 

   public void writeObject(Object obj, AbstractHessianOutput out) throws
IOException

   {

      out.writeMapBegin(obj.getClass().getName());

      ByteArrayOutputStream baos = new ByteArrayOutputStream();

      ObjectOutputStream oos = new ObjectOutputStream(baos);

      oos.writeObject(obj);

      oos.close();

      out.writeBytes(baos.toByteArray());

   }

}

----------------------------------------------------------------------------
---------------------------------------------------

 

/*

 * Copyright (C) The MX4J Contributors.

 * All rights reserved.

 *

 * This software is distributed under the terms of the MX4J License version
1.0.

 * See the terms of the MX4J License in the documentation provided with this
software.

 */

 

package mx4j.tools.remote.caucho.serialization;

 

import java.io.ByteArrayInputStream;

import java.io.IOException;

import java.io.ObjectInputStream;

 

import com.caucho.hessian.io.AbstractHessianInput;

import com.caucho.hessian.io.Deserializer;

 

/**

 * @version $

 */

class JMXDeserializer implements Deserializer

{

   private Class type;

 

   JMXDeserializer(Class type)

   {

      this.type = type;

   }

 

   public Class getType()

   {

      return type;

   }

 

    public Object readObject(AbstractHessianInput in) throws IOException {

        throw new RuntimeException("If you are here, something is wrong
:)");

    }

 

    public Object readList(AbstractHessianInput in, int length) throws
IOException {

        throw new RuntimeException("If you are here, something is wrong
:)");

    }

 

   public Object readMap(AbstractHessianInput in) throws IOException

   {

      try

      {

         byte[] bytes = in.readBytes();

         ByteArrayInputStream bais = new ByteArrayInputStream(bytes);

         ObjectInputStream ois = new ObjectInputStream(bais);

         Object result = ois.readObject();

         ois.close();

         return result;

      }

      catch (ClassNotFoundException x)

      {

         throw new IOException(x.toString());

      }

   }

}

 

 

-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Bordet, Simone
Sent: Tuesday, May 31, 2005 2:25 AM
To: Adrian Tarau; [email protected]
Subject: [Mx4j-user] RE: Hessian connector

 

Adrian,

 

which version of Hessian are you using ?

MX4J works with Hessian 3.0.8.

 

Simon

 


  _____  


From: [email protected]
[mailto:[email protected]] On Behalf Of Adrian Tarau
Sent: Monday, May 30, 2005 20:23
To: [email protected]
Subject: Hessian connector

I tried to use hessian connector and all the time I get this exception.

 

java.lang.IncompatibleClassChangeError: class
mx4j.tools.remote.caucho.serialization.JMXSerializer has interface
com.caucho.hessian.io.Serializer as super class

      at
mx4j.tools.remote.caucho.serialization.JMXSerializerFactory.getDefaultSerial
izer(JMXSerializerFactory.java:23)

      at
com.caucho.hessian.io.SerializerFactory.getSerializer(SerializerFactory.java
)

      at
com.caucho.hessian.io.HessianOutput.writeObject(HessianOutput.java:305)

      at
mx4j.tools.remote.caucho.hessian.HessianCauchoOutput.writeObject(HessianCauc
hoOutput.java:82)

      at
mx4j.tools.remote.caucho.CauchoClientInvoker$CauchoServiceProxy.writeArgumen
ts(CauchoClientInvoker.java:120)

      at
mx4j.tools.remote.caucho.CauchoClientInvoker$CauchoServiceProxy.invoke(Cauch
oClientInvoker.java:66)

      at $Proxy0.invoke(Unknown Source)

      at
mx4j.tools.remote.http.HTTPClientInvoker.invoke(HTTPClientInvoker.java:117)

      at
mx4j.tools.remote.JMXConnectionMBeanServerConnection.invoke(JMXConnectionMBe
anServerConnection.java:130)

 

JMXSerializer is defined below: 

 

class JMXSerializer extends Serializer

{

   public void writeObject(Object obj, AbstractHessianOutput out) throws
IOException

   {

      out.writeMapBegin(obj.getClass().getName());

      ByteArrayOutputStream baos = new ByteArrayOutputStream();

      ObjectOutputStream oos = new ObjectOutputStream(baos);

      oos.writeObject(obj);

      oos.close();

      out.writeBytes(baos.toByteArray());

   }

}

 

but Serializer is and interface com.caucho.hessian.io.Serializer so no
wander why JVM throws that error.

 

I use MX4J 3.0.1

 

Kind regards,

Adrian Tarau

 

Software Engineer

DAX Technologies Corp.

Matawan, New Jersey, 07747, U.S.

Tel:       (732) - 203 - 1784 x 125

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