0002028: Hessian: Unsupported operation exception

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Category

Severity

Reproducibility

Date Submitted

Last Update

0002028

[Resin]

minor

always

09-25-07 09:16

09-28-07 13:36

Reporter

ferg

View Status

public

Assigned To

ferg

Priority

normal

Resolution

fixed

Status

closed

Product Version

3.1.2

Summary

0002028: Hessian: Unsupported operation exception

Description

(rep by Jerome Landreau)

I am using Hessian version 3.1.2 and I have an exception when I try to deserialize my object:

java.lang.UnsupportedOperationException: com.caucho.hessian.io.CollectionDeserializer@152dd7b
        at com.caucho.hessian.io.AbstractDeserializer.readLengthList(AbstractDeserializer.java:77)
        at com.caucho.hessian.io.Hessian2Input.readObject(Hessian2Input.java:1839)
        at com.caucho.hessian.io.MapDeserializer.readMap(MapDeserializer.java:117)
        at com.caucho.hessian.io.SerializerFactory.readMap(SerializerFactory.java:347)
        at com.caucho.hessian.io.Hessian2Input.readObject(Hessian2Input.java:1845)
        at com.caucho.hessian.io.MapDeserializer.readMap(MapDeserializer.java:117)
        at com.caucho.hessian.io.SerializerFactory.readMap(SerializerFactory.java:347)
        at com.caucho.hessian.io.Hessian2Input.readObject(Hessian2Input.java:1845)
        at com.caucho.hessian.io.CollectionDeserializer.readList(CollectionDeserializer.java:111)
        at com.caucho.hessian.io.SerializerFactory.readList(SerializerFactory.java:333)
        at com.caucho.hessian.io.Hessian2Input.readObject(Hessian2Input.java:1827)
        at com.caucho.hessian.io.CollectionDeserializer.readList(CollectionDeserializer.java:111)
        at com.caucho.hessian.io.Hessian2Input.readObject(Hessian2Input.java:1577)
        at com.caucho.hessian.io.JavaDeserializer$ObjectFieldDeserializer.deserialize(JavaDeserializer.java:375)
        at com.caucho.hessian.io.JavaDeserializer.readObject(JavaDeserializer.java:228)

This is the code that I am using to deserialize my object is:

ByteArrayInputStream bais = new ByteArrayInputStream(data);
Hessian2Input in = new Hessian2Input(bais);
Object o = in.readObject();
in.close();

After some debugging, I have found that the problem is in this part of the method "Hessian2Input.readObject()":

case 'v': {
      int ref = readInt();
      String type = (String) _types.get(ref);
      int length = readInt();

      Deserializer reader;
      reader = findSerializerFactory().getObjectDeserializer(type);

      return reader.readLengthList(this, length);
    }

The type is a custom class which implements java.util.List and the reader is an instance of CollectionDeserializer wich extends the class AbstractDeserializer.
The problem is that CollectionDeserializer doesnt't override the readLengthList method of the class AbstractDeserializer which throws an UnsuportedException.

Additional Information

Attached Files

Relationships

Notes
(0002315) ferg 09-28-07 13:36	hessian/3b2j

Issue History
Date Modified	Username	Field	Change
09-25-07 09:16	ferg	New Issue
09-28-07 13:36	ferg	Note Added: 0002315
09-28-07 13:36	ferg	Assigned To	=> ferg
09-28-07 13:36	ferg	Status	new => closed
09-28-07 13:36	ferg	Resolution	open => fixed
09-28-07 13:36	ferg	Fixed in Version	=> 3.1.3

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