Install openejb.war
Once Tomcat has been installed, the OpenEJB plugin for Tomcat can be installed. The commands in this example are executed from within the Tomcat installation directory.
Unpack OpenEJB Tomcat plugin in Tomcat webapps directory
 | Be Careful
This is the most error prone step. A web application does not contain a root directory, so if you unpack it in the wrong directory, it is difficult to undo. Please, follow this step closely, and most importantly make sure you execute the unpack command from within the new webapps/openejb directory. |
Due to the structure of war files, you must create a new directory for OpenEJB, change to the new directory and execute the unpack command from within the new directory. If you get this wrong, it is difficult to undo, so follow the steps closely.
C:\apache-tomcat-6.0.14>mkdir webapps\openejb
C:\apache-tomcat-6.0.14>cd webapps\openejb
C:\apache-tomcat-6.0.14\webapps\openejb>jar -xvf \openejb.war
created: WEB-INF/
created: WEB-INF/classes/
created: WEB-INF/classes/org/
created: WEB-INF/classes/org/apache/
created: WEB-INF/classes/org/apache/openejb/
...snip...
C:\apache-tomcat-6.0.14\webapps\openejb>dir
Volume in drive C has no label.
Volume Serial Number is 0000-0000
Directory of C:\apache-tomcat-6.0.14\webapps\openejb
09/21/2007 10:19 AM <DIR> .
09/21/2007 10:19 AM <DIR> ..
09/21/2007 10:19 AM 1,000 index.html
09/21/2007 10:19 AM <DIR> lib
09/21/2007 10:19 AM 11,358 LICENSE
09/21/2007 10:19 AM <DIR> META-INF
09/21/2007 10:19 AM 11,649 NOTICE
09/21/2007 10:19 AM 1,018 openejb.xml
09/21/2007 10:19 AM 1,886 README.txt
09/21/2007 10:19 AM <DIR> tomcat
09/21/2007 10:19 AM <DIR> WEB-INF
5 File(s) 26,911 bytes
6 Dir(s) 4,633,796,608 bytes free
C:\apache-tomcat-6.0.14\webapps\openejb>cd ..\..
C:\apache-tomcat-6.0.14>
apache-tomcat-6.0.14$ mkdir webapps/openejb
apache-tomcat-6.0.14$ cd webapps/openejb/
apache-tomcat-6.0.14/webapps/openejb$ jar -xvf path/to/openejb.war
created: WEB-INF/
created: WEB-INF/classes/
created: WEB-INF/classes/org/
created: WEB-INF/classes/org/apache/
created: WEB-INF/classes/org/apache/openejb/
...snip...
apache-tomcat-6.0.14/webapps/openejb$ ls
LICENSE META-INF/ NOTICE README.txt WEB-INF/ index.html lib/ openejb.xml tomcat/
apache-tomcat-6.0.14/webapps/openejb$ cd ../..
apache-tomcat-6.0.14$
Add the OpenEJB listener to Tomcat
All Tomcat listener classes must be available in the Tomcat common class loader, so the openejb-loader jar must be copied into the Tomcat lib directory.
C:\apache-tomcat-6.0.14>copy webapps\openejb\lib\openejb-loader-3.0.0-SNAPSHOT.jar lib\openejb-loader.jar
1 file(s) copied.
apache-tomcat-6.0.14$ cp webapps/openejb/lib/openejb-loader-*.jar lib/openejb-loader.jar
Add the following highlighted lines to your conf/server.xml file to load the OpenEJB listener:
<!-- Note: A "Server" is not itself a "Container", so you may not
define subcomponents such as "Valves" at this level.
Documentation at /docs/config/server.html
-->
<Server port="8005" shutdown="SHUTDOWN">
<!-- OpenEJB plugin for tomcat -->
<Listener className="org.apache.openejb.loader.OpenEJBListener" />
<!--APR library loader. Documentation at /docs/apr.html -->
<Listener className="org.apache.catalina.core.AprLifecycleListener" SSLEngine="on" />
...snip...
Update the Tomcat annotations-api.jar file
Tomcat contains an old non-compliant version of the javax.annotation classes and these invalid classes must be updated so OpenEJB can process annotations. Simply, replace the annotations-api.jar in the Tomcat lib directory with the updated annotations-api.jar in the OpenEJB war.
C:\apache-tomcat-6.0.14>copy webapps\openejb\tomcat\annotations-api.jar lib\annotations-api.jar
Overwrite lib\annotations-api.jar? (Yes/No/All): y
1 file(s) copied.
apache-tomcat-6.0.14$ cp webapps/openejb/tomcat/annotations-api.jar lib/annotations-api.jar
Add OpenEJB javaagent to Tomcat startup
OpenJPA, the Java Persistence implementation used by OpenEJB, currently must enhanced persistence classes to function properly, and this requires the installation of a javaagent into the Tomcat startup process.
First, copy the OpenEJB JavaAgent jar into the lib directory.
C:\apache-tomcat-6.0.14>copy webapps\openejb\lib\openejb-javaagent-3.0.0-SNAPSHOT.jar lib\openejb-javaagent.jar
1 file(s) copied.
apache-tomcat-6.0.14$ cp webapps/openejb/lib/openejb-javaagent-*.jar lib/openejb-javaagent.jar
Simply, add the following highlighted lines to the bin/catalina.bat (Windows) or bin/catalina.sh (Unix) file to enable the OpenEJB javaagent:
...snip...
if not exist "%CATALINA_BASE%\conf\logging.properties" goto noJuli
set JAVA_OPTS=%JAVA_OPTS% -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Djava.util.logging.config.file="%CATALINA_BASE%\conf\logging.properties"
:noJuli
rem Add OpenEJB javaagent
if not exist "%CATALINA_BASE%\webapps\openejb\lib\openejb-javaagent.jar" goto noOpenEJBJavaagent
set JAVA_OPTS="-javaagent:%CATALINA_BASE%\webapps\openejb\lib\openejb-javaagent.jar" %JAVA_OPTS%
:noOpenEJBJavaagent
rem ----- Execute The Requested Command ---------------------------------------
echo Using CATALINA_BASE: %CATALINA_BASE%
echo Using CATALINA_HOME: %CATALINA_HOME%
...snip...
...snip...
# Set juli LogManager if it is present
if [ -r "$CATALINA_BASE"/conf/logging.properties ]; then
JAVA_OPTS="$JAVA_OPTS "-Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager" "-Djava.util.logging.config.file="$CATALINA_BASE/conf/logging.properties"
fi
# Add OpenEJB javaagent
if [ -r "$CATALINA_BASE"/webapps/lib/openejb-javaagent.jar ]; then
JAVA_OPTS=""-javaagent:$CATALINA_BASE/lib/openejb-javaagent.jar" $JAVA_OPTS"
fi
# ----- Execute The Requested Command -----------------------------------------
# Bugzilla 37848: only output this if we have a TTY
if [ $have_tty -eq 1 ]; then
echo "Using CATALINA_BASE: $CATALINA_BASE"
...snip...
NOTE: The example above is an excerpt from the middle of the bin/catalina.sh file. Search for "Execute" in the file to locate the correct position in the file to add the new lines.
