Setup Subversion 1.7 into JDeveloper 11R2

I do not know for what reason Oracle JDeveloper R2 still does not support Subversion 1.7, but I've managed to make it to support it. I've done it n Linux, but you can apply it for Windows too.
So.
That is what I have:
- Ubuntu 11.20 Linux 3.5.0-24-generic SMP x86_64
- JDeveloper Studio Edition 11.1.2.3.0

1. Check what Subversion is installed in JDeveloper.
Start JDeveloper and open menu Tools -> Preferences, select Versioning/Subversion: see
SVNKit/1.3.5 Client installed. JNA disabled.

2. Close JDeveloper.

3. This step is optional. Install linsvn-java package if you think you will need some fancy ways to login to Subversion using system security.

sudo apt-get install libsvn-java

4. Download SVNKit Standalone Version 1.7 from http://svnkit.com/download.php
cd /download/svn/
wget http://www.svnkit.com/org.tmatesoft.svn_1.7.8.standalone.zip
unzip  org.tmatesoft.svn_1.7.8.standalone.zip


/download/svn/svnkit-1.7.8 directory is created

5. Download Subclipse 1.8 from http://subclipse.tigris.org
cd /download/subclipse/
wget http://subclipse.tigris.org/files/documents/906/49260/site-1.8.18.zip
unzip site-1.8.18.zip 

later we will need only files from /download/subclipse/plugins

5. Go to JDeveloper extension directory (my JDev is installed in /opt/oracle/) and do following:
cd /opt/oracle/middleware-11.1.2.3/jdeveloper/jdev/extensions
mv oracle.jdeveloper.subversion oracle.jdeveloper.subversion-1.3
mkdir oracle.jdeveloper.subversion-1.7
ln -s oracle.jdeveloper.subversion-1.7 oracle.jdeveloper.subversion

6. Copy required SVNKit files here and link them as "versionless" names
cd oracle.jdeveloper.subversion
cp /download/svn/svnkit-1.7.8/lib/antlr-runtime-3.4.jar .
cp /download/svn/svnkit-1.7.8/lib/svnkit-1.7.8.jar .
cp /download/svn/svnkit-1.7.8/lib/sqljet-1.1.6.jar .
cp /download/svn/svnkit-1.7.8/lib/sequence-library-1.0.2.jar .
cp /download/svn/svnkit-1.7.8/svnkit-javahl16-1.7.8.jar .
cp /download/svn/svnkit-1.7.8/trilead-ssh2-1.0.0-build215.jar .

ln -s antlr-runtime-3.4.jar antlr-runtime.jar
ln -s svnkit-1.7.8.jar svnkit.jar
ln -s sqljet-1.1.6.jar sqljet.jar
ln -s sequence-library-1.0.2.jar sequence-library.jar
ln -s svnkit-javahl16-1.7.8.jar svnkit-javahl.jar
ln -s trilead-ssh2-1.0.0-build215.jar trilead.jar


7. Copy required Subclipse files here and link them as "versionless" names

cp /download/subclipse/plugins/net.java.dev.jna_3.4.0.t20120117_1605.jar .
cp /download/subclipse/plugins/org.tigris.subversion.clientadapter_1.8.3.jar .

cp /download/subclipse/plugins/org.tigris.subversion.clientadapter.javahl_1.7.8.1.jar .
cp /download/subclipse/plugins /org.tigris.subversion.clientadapter.svnkit_1.7.8.1.jar . 

ln -s net.java.dev.jna_3.4.0.t20120117_1605.jar jna.jar
ln -s org.tigris.subversion.clientadapter_1.8.3.jar svnClientAdapter.jar 
ln -s org.tigris.subversion.clientadapter.javahl_1.7.8.1.jar svnjavahl.jar
ln -s org.tigris.subversion.clientadapter.svnkit_1.7.8.1.jar casvnkit.jar

5. Go to JDeveloper jdev/bin directory and open jdev.conf file in your favorite text editor:
cd /opt/oracle/middleware-11.1.2.3/jdeveloper/jdev/bin
gedit jdev.conf

6. Add following to the end
#
# Needed for Subversion 1.7
#
AddVMOption -Xbootclasspath/a:../extensions/oracle.jdeveloper.subversion/antlr-runtime.jar
AddVMOption -Xbootclasspath/a:../extensions/oracle.jdeveloper.subversion/svnkit.jar
AddVMOption -Xbootclasspath/a:../extensions/oracle.jdeveloper.subversion/casvnkit.jar
AddVMOption -Xbootclasspath/a:../extensions/oracle.jdeveloper.subversion/sqljet.jar
AddVMOption -Xbootclasspath/a:../extensions/oracle.jdeveloper.subversion/svnClientAdapter.jar
AddVMOption -Xbootclasspath/a:../extensions/oracle.jdeveloper.subversion/svnjavahl.jar
AddVMOption -Xbootclasspath/a:../extensions/oracle.jdeveloper.subversion/trilead.jar
AddVMOption -Xbootclasspath/a:../extensions/oracle.jdeveloper.subversion/svnkit-javahl.jar
AddVMOption -Xbootclasspath/a:../extensions/oracle.jdeveloper.subversion/sequence-library.jar

# If you want to use JNA
#AddNativeCodePath /usr/lib/x86_64-linux-gnu/jni/libsvnjavahl-1.so
#AddVMOption -Xbootclasspath/a:../extensions/oracle.jdeveloper.subversion/jna.jar

# for debug
#AddVMOption -Djava.util.logging.config.file=../extensions/oracle.jdeveloper.subversion/svnkit-logging.conf
#AddVMOption -verbose

7. Check what Subversion is now installed in JDeveloper.
Start JDeveloper and open menu Tools -> Preferences, select Versioning/Subversion: see
SVNKit/1.7.8 Client installed. JNA Disabled.

Done!
Now you can connect to your Subversion 1.7 repository and use Versioning Navigator, commit files in Application Navigator etc.


Some additional notes!

I had issues when I wanted to add a project or an application to Versioning (using JDK 1.6 (i386) and 1.7 (amd64) ). SVNKit returned exception
 java.lang.NullPointerException at org.tmatesoft.svn.core.internal.wc.SVNClassLoader.loadProperties(SVNClassLoader.java:193)

I've filed the bug to SVNKit issues tracker http://issues.tmatesoft.com/issue/SVNKIT-352 .
However if you do not want to wait for official update that includes the fix, you can fix it yourself.
1. unzip sources
cd /download/svn/svnkit-1.7.8-nojna/src
mkdir svnkit
cd svnkit
unzip ../svnkit-1.7.8-sources.jar 

2. unzip classes
cd /opt/oracle/middleware-11.1.2.3/jdeveloper/jdev/extensions/oracle.jdeveloper.subversion
mkdir svnkit
cd svnkit
unzip ../svnkit.jar

3. copy source to classes
cd org/tmatesoft/svn/core/internal/wc/ 
cp /download/svn/svnkit-1.7.8-nojna/src/svnkit/org/tmatesoft/svn/core/internal/wc/SVNClassLoader.java .


4. modify code to fix the bug
Open for edit SVNClassLoader.java
go to line 193

resourceStream = SVNClassLoader.class.getClassLoader().getResourceAsStream(svnkitPropertiesResource);
delete it

insert here the following

ClassLoader cl = SVNClassLoader.class.getClassLoader();
if (cl == null) cl = ClassLoader.getSystemClassLoader();
resourceStream = cl.getResourceAsStream(svnkitPropertiesResource);
save, exit from editor


5. compile the file
/opt/oracle/jdk1.7.0_15-amd64/bin/javac -g:source,lines,vars -source 1.5 -target 1.5 -cp /opt/oracle/middleware-11.1.2.3/jdeveloper/jdev/extensions/oracle.jdeveloper.subversion/sequence-library.jar:/opt/oracle/middleware-11.1.2.3/jdeveloper/jdev/extensions/oracle.jdeveloper.subversion/svnkit.jar SVNClassLoader.java

6. modify jdev.conf to use svnkit dir instead of svnkit.jar
AddVMOption -Xbootclasspath/a:../extensions/oracle.jdeveloper.subversion/svnkit

If you need that SVNKit to generate a detailed output create file
../extensions/oracle.jdeveloper.subversion/svnkit-logging.conf and populate it with something like
svnkit.level=FINEST
svnkit-network.level=FINEST
svnkit-fsfs.level=FINEST
svnkit-wc.level=FINEST
svnkit-cli.level=FINEST

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Note. By some reason History in JDeveloper does not work with SVN. Though you can see change log in Version Navigator or other ways.