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From bugzi...@apache.org
Subject DO NOT REPLY [Bug 31433] New: - CircularFifoBuffer not really Serializable
Date Mon, 27 Sep 2004 07:24:15 GMT
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http://issues.apache.org/bugzilla/show_bug.cgi?id=31433

CircularFifoBuffer not really Serializable

           Summary: CircularFifoBuffer not really Serializable
           Product: Commons
           Version: 3.1
          Platform: Sun
        OS/Version: Solaris
            Status: NEW
          Severity: Normal
          Priority: Other
         Component: Collections
        AssignedTo: commons-dev@jakarta.apache.org
        ReportedBy: kalle.gustafsson@compingo.se


Create a CircularFifoBuffer of size N. Serialize and deserialize a couple of
times. When adding element N+1, an error occurs. (OutOfMemoryError in our
testing environment, ArrayIndexOutOfBounds when running the code snippet.)

The error can be reproduced by running the following code snippet in a scrapbook
page in WebSphere Studio 5.1.2 (default JRE) on Windows XP (The error occurs at
the third add operation):

org.apache.commons.collections.buffer.CircularFifoBuffer b = new
org.apache.commons.collections.buffer.CircularFifoBuffer(2);

b.add("a");

java.io.ByteArrayOutputStream bos = new java.io.ByteArrayOutputStream();
new java.io.ObjectOutputStream(bos).writeObject(b);

org.apache.commons.collections.buffer.CircularFifoBuffer b2 =
(org.apache.commons.collections.buffer.CircularFifoBuffer) new
java.io.ObjectInputStream(new
java.io.ByteArrayInputStream(bos.toByteArray())).readObject();

b2.add("b");

bos = new java.io.ByteArrayOutputStream();
new java.io.ObjectOutputStream(bos).writeObject(b2);

b = (org.apache.commons.collections.buffer.CircularFifoBuffer) new
java.io.ObjectInputStream(new
java.io.ByteArrayInputStream(bos.toByteArray())).readObject();

b.add("c");

bos = new java.io.ByteArrayOutputStream();
new java.io.ObjectOutputStream(bos).writeObject(b);

b2 = (org.apache.commons.collections.buffer.CircularFifoBuffer) new
java.io.ObjectInputStream(new
java.io.ByteArrayInputStream(bos.toByteArray())).readObject();

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