0004565: Hibernate PersistentMap serialization broken (again)

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Category

Severity

Reproducibility

Date Submitted

Last Update

0004565

[Hessian]

major

always

05-19-11 02:07

Reporter

mate

View Status

public

Assigned To

Priority

normal

Resolution

open

Status

new

Product Version

Summary

0004565: Hibernate PersistentMap serialization broken (again)

Description

With Resin/Hessian 4.0.18 serialization of Hibernate PersistentMap:s is broken (again) in some situations.

If the PersistentMap is the "top" return value, it seems to work fine. However if the PersistentMap is part of another structure, such as the value in a HashMap that is returned, it is serialized as being of type java.lang.Object

Please add a test case for this in your internal suite.

Additional Information

Example test case:

    final Map<String, String> persistentMap = ...
    assertEquals(PersistentMap.class, persistentMap.getClass());
    assertSize(2, persistentMap);
    SortedMap<Integer, Map<String, String>> input = new TreeMap<Integer, Map<String, String>>();
    input.put(1, persistentMap);

    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    sendToStream(baos, input);

    ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
    Map result = readFromStream(bais, SortedMap.class);

    assertEquals(TreeMap.class, result.getClass());
    assertEquals(input, result);

  private static void sendToStream(OutputStream os, Object value) throws Throwable {
    HessianDebugOutputStream dos = new HessianDebugOutputStream(os, new PrintWriter(System.out));
    dos.startTop2();
    Hessian2Output out = new Hessian2Output(dos);
    out.getSerializerFactory().setSendCollectionType(false);
    out.writeReply(value);
    out.close();
    os.close();
  }

  private static <E> E readFromStream(InputStream is, Class<E> clazz) throws Throwable {
    new HessianInputFactory().readHeader(is);
    is = new HessianDebugInputStream(is, new PrintWriter(System.out));
    Hessian2Input in = new Hessian2Input(is);
    return (E) in.readReply(clazz);
  }

The output of the debug output stream is:
Hessian 2.0
Reply
  map java.util.TreeMap (0)
    1 => map java.lang.Object (0000001)
           "foo1" => "bar1"
           "foo2" => "bar2"

The exception is
com.caucho.hessian.io.HessianProtocolException: com.caucho.hessian.io.BasicDeserializer: unexpected object java.lang.String (TXT)
    at com.caucho.hessian.io.AbstractDeserializer.error(AbstractDeserializer.java:150)
    at com.caucho.hessian.io.AbstractDeserializer.readMap(AbstractDeserializer.java:102)
    at com.caucho.hessian.io.SerializerFactory.readMap(SerializerFactory.java:516)
    at com.caucho.hessian.io.Hessian2Input.readObject(Hessian2Input.java:2110)
    at com.caucho.hessian.io.MapDeserializer.readMap(MapDeserializer.java:114)
    at com.caucho.hessian.io.Hessian2Input.readObject(Hessian2Input.java:1695)
    at com.caucho.hessian.io.Hessian2Input.readReply(Hessian2Input.java:370)

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Issue History
Date Modified	Username	Field	Change
05-19-11 02:07	mate	New Issue
05-19-11 02:08	mate	Issue Monitored: mate

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