Name: gm110360 Date: 05/08/2002


FULL PRODUCT VERSION :
java version "1.4.0"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.0-b92)
Java HotSpot(TM) Client VM (build 1.4.0-b92, mixed mode)


FULL OPERATING SYSTEM VERSION :

Microsoft Windows 2000 [Version 5.00.2195]


A DESCRIPTION OF THE PROBLEM :
I am trying to retrieve the byte code of classes that are
nested 1,2,...n levels deep inside of nested jar, ear and
war files.

However, I run into problems when trying to retrieve data
from compressed nested jar, ear and war files. The clasfile
data gets truncated or entries are not listed. The problem
dissappears when I use jar files that are not compressed.

I discovered that when I run the following code on a jar
that contains compressed entries, I can retrieve the
compressed size of all jar entries that are not inside of
nested jars. However if a jar entry is nested, I always
get –1 as the compression size.


JarFile jarFile = new JarFile("myapp.ear");
JarEntry entry1 = jarFile.getJarEntry("myapp.war");

// always correct size compressed/ not compressed
int size1 = entry1.getCompressedSize();

JarInputStream(jarFile.getInputStream(entry))
JarEntry entry2 = inputStream.getNextJarEntry();

// always -1 if compressed
int size2 = entry2.getCompressedSize();


I figure whether the nested entries are compressed or not,
the right size should be returned. Is this a bug in the
java API or is there a better way to go about retrieving
the byte code of classes that are nested 1,2,...n levels
deep inside of nested jar, ear and war files?


~Nathan
###@###.###



STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
1. Run the following code:

JarFile jarFile = new JarFile("myapp.ear");
JarEntry entry1 = jarFile.getJarEntry("myapp.war");

// always correct size compressed/ not compressed
int size1 = entry1.getCompressedSize();

JarInputStream inputStream = JarInputStream
(jarFile.getInputStream(entry));

JarEntry entry2 = inputStream.getNextJarEntry();

// always -1 if compressed
int size2 = entry2.getCompressedSize();

2. Try to write entry2 out to a file. It will always be
corrupt and of the wrong size!?!




EXPECTED VERSUS ACTUAL BEHAVIOR :
I should always get the correct compressed size and valid
data when calling jarInputStream.getNextJarEntry() or
jarEntry2.getCompressedSize(); However, I never do.


ERROR MESSAGES/STACK TRACES THAT OCCUR :
JarEntry=org/jdom/adapters/AbstractDOMAdapter.class;compressed size=-1;decom
pressed size=-1
closing entry...
    JarEntry=org/jdom/adapters/CrimsonDOMAdapter.class;compressed size=-1;decomp
ressed size=-1
closing entry...
    JarEntry=org/jdom/adapters/DOMAdapter.class;compressed size=-1;decompressed
size=-1
closing entry...
    JarEntry=org/jdom/adapters/OracleV1DOMAdapter.class;compressed size=-1;decom
pressed size=-1
closing entry...
    JarEntry=org/jdom/adapters/OracleV2DOMAdapter.class;compressed size=-1;decom
pressed size=-1

This bug can be reproduced always.

---------- BEGIN SOURCE ----------
JarFile jarFile = new JarFile("myapp.ear");
JarEntry entry1 = jarFile.getJarEntry("myapp.war");

// always correct size compressed/ not compressed
int size1 = entry1.getCompressedSize();

JarInputStream inputStream = JarInputStream(jarFile.getInputStream(entry1));

JarEntry entry2 = inputStream.getNextJarEntry("myClass.class");

// always -1 if compressed
int size2 = entry2.getCompressedSize();


---------- END SOURCE ----------
(Review ID: 146284)
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