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Mantis - Hessian
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| ID: | Category: | Severity: | Reproducibility: | Date Submitted: | Last Update: |
| 4165 | major | always | 08-05-10 16:00 | 08-05-10 16:00 | |
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| Reporter: | ebourg | Platform: | |||
| Assigned To: | OS: | ||||
| Priority: | normal | OS Version: | |||
| Status: | new | Product Version: | 4.0.7 | ||
| Product Build: | Resolution: | open | |||
| Projection: | none | ||||
| ETA: | none | Fixed in Version: | |||
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| Summary: | 0004165: ArrayStoreException on deserializing a class with an unknown field | ||||
| Description: |
If a Hessian 2 stream contains an object definition with more fields than the class known locally, an ArrayStoreException is triggered: java.lang.ArrayStoreException: com.caucho.hessian.io.JavaDeserializer$NullFieldDeserializer at com.caucho.hessian.io.Hessian2Input.readObjectDefinition(Hessian2Input.java:2306) at com.caucho.hessian.io.Hessian2Input.readObject(Hessian2Input.java:2212) at com.caucho.hessian.io.CollectionDeserializer.readLengthList(CollectionDeserializer.java:97) at com.caucho.hessian.io.Hessian2Input.readObject(Hessian2Input.java:1713) at com.caucho.hessian.io.Hessian2Input.readReply(Hessian2Input.java:157) at com.caucho.hessian.client.HessianProxy.invoke(HessianProxy.java:190) This is annoying because if a class is updated on the server with an optional field, it crashes the clients that haven't been updated yet a rely on a older version of the class. It doesn't happen with a Hessian 1 stream. This happens because NullFieldDeserializer in JavaDeserializer doesn't extend FieldDeserializer, so it's not possible to assign its instance to the array of FieldDeserializers created in the JavaDeserializer#createFields(int) method. |
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