[JBoss-user] Loading classes from a jar file dynamicaly
I need to know how to load classes from a jar file dynamicaly. I inspect a little bit the JBoss source code and I think I could find the answer to my problem into the source code of javax.management.loading.MLet. But where can I find this source ? I've look at the source of JBoss through the Browse source on-line link but I was not able to find it ? Someone know where to find this source, or know how to load class from a .jar file dynamicaly and could give me some example. Thanks Francois Archambault ___ JBoss-user mailing list [EMAIL PROTECTED] http://lists.sourceforge.net/lists/listinfo/jboss-user
[JBoss-user] Problem with Beans Bridge
Hi, I'm trying to access a bean inside of JBoss from an application in VB. I'm doing it through the JavaBeans Bridge from sun. But after a couple of test my JBoss don't want to start anymore. It seems like there is a problem with JRE. I've already got this problem before after installing the latest JRE. The problem was solved by removing the JRE I just installed, but now I have remove this JRE and still have the problem. I don't know if someone have went into this kind of problem but maybe the registry could have something to do with it. I'm using - Windows 2000 - JBuilder4 - JBoss 2.2.1 - JRE 1.3.0_02 (the one that I have removed) Here is the error I receive when starting JBoss: Using configuration default java.lang.NoClassDefFoundError: javax/management/MBeanRegistration at java.lang.ClassLoader.findBootstrapClass(Native Method) at java.lang.ClassLoader.findBootstrapClass0(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at com.sun.management.jmx.MBeanServerImpl.findClass(MBeanServerImpl.java :2466) at com.sun.management.jmx.MBeanServerImpl.createMBean(MBeanServerImpl.ja va:751) at javax.management.loading.MLet.getMBeansFromURL(MLet.java:540) at javax.management.loading.MLet.getMBeansFromURL(MLet.java:369) at org.jboss.Main.init(Main.java:173) at org.jboss.Main$1.run(Main.java:107) at java.security.AccessController.doPrivileged(Native Method) at org.jboss.Main.main(Main.java:103) Any help is appreciated Thanks Francois Archambault ___ JBoss-user mailing list [EMAIL PROTECTED] http://lists.sourceforge.net/lists/listinfo/jboss-user
RE: [JBoss-user] not bound problem
You just can't have access to a data source outside of the container.
You need to get the datasource from within an ejb.
Francois
-Message d'origine-
De: Michael Baedorf [SMTP:[EMAIL PROTECTED]]
Date: 3 mai, 2001 09:50
À:[EMAIL PROTECTED]
Objet:[JBoss-user] not bound problem
Hello,
I´m a newbie and I have a problem getting a database connection.
I configured the following in the jboss.jcml:
mbean code=org.jboss.jdbc.JdbcProvider
name=DefaultDomain:service=JdbcProvider
attribute name=Drivers
org.hsql.jdbcDriver,org.enhydra.instantdb.jdbc.idbDriver,org.gjt.mm.my
sql.Driver
/attribute
/mbean
mbean code=org.jboss.jdbc.XADataSourceLoader
name=DefaultDomain:service=XADataSource,name=MySqlDB
attribute name= DataSourceClass
org.opentools.minerva.jdbc.xa.wrapper.XADataSourceImpl/attribute
attribute name=PoolNameMySqlDB/attribute
attribute name=URLjdbc:mysql://localhost:3306/gsfs/attribute
attribute name=MinSize10/attribute
attribute name=MaxSize100/attribute
attribute name=JDBCUsergsfs/attribute
attribute name=Passwordgsfs/attribute
/mbean
In the standardjaws.xml I added:
datasourcejava:/MySqlDB/datasource
type-mappingmySQL/type-mapping
After starting the server I get the message:
[MySqlDB] Starting
[MySqlDB] XA Connection pool MySqlDB bound to java:/MySqlDB
[MySqlDB] Started
JNDIView result:
java: Namespace
+- MinervaXACMFactory (class:
org.opentools.minerva.connector.jboss.MinervaXACMFactory)
+- DefaultDS (class: org.opentools.minerva.jdbc.xa.XAPoolDataSource)
+- SecurityProxyFactory (class:
org.jboss.security.SubjectSecurityProxyFactory)
+- MySqlDB (class: org.opentools.minerva.jdbc.xa.XAPoolDataSource)
...
Now I try to look for the DB (not using a bean nor a servlet):
try {
props = new Properties();
props.setProperty
(java.naming.factory.initial,
org.jnp.interfaces.NamingContextFactory);
props.setProperty
(java.naming.provider.url, localhost:1099);
props.setProperty
(java.naming.factory.url.pkgs, org.jboss.naming);
ctx = new InitialContext(props);
System.out.println(Got Context);
objRef = ctx.lookup(MySqlDB);
System.out.println(Got Reference);
...
} catch ...
Running the simple program only throw an exception:
MySqlDB not bound
I included all packages mentioned in chapter 1 of the online
documentation.
Can somebody tell me what´s the error?
Thanks.
--
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[JBoss-user] Flushing Cache (For Simone ?)
Hi, We have the following problem : The problem is that we have to deal with direct access to the underlying database. We absolutely cannot make all accesses go through the EJB layer (for now that is). While this is the case, we have to find ways to make JBoss refresh the data from the physical database when it is changed. So we thought it would be simple to add a SSB to offer cache management services to our "old" application to call. ie. make changes through VB/ADO/OleDB application and "inform" the JBoss server that those tables need to be "flushed". But we do want to keep the cache, because it is more efficient. So we created our own LRUEnterpriseContextCachePolicy class to be able to passivate beans with JMS messages. We actually call the ageOut method with the beans key we want to flush by going through the LRUList obtains from getList() method. But there is still a problem, the beans that are in a transaction don't get passivated. How can we ensure that all the beans we want to be passivate get passivated and that, wathever is the age of the bean ? Thanks Francois Archambault ___ JBoss-user mailing list [EMAIL PROTECTED] http://lists.sourceforge.net/lists/listinfo/jboss-user
[JBoss-user] Flushing the cache
Hi, I need to flush the cache manually. I already know that there is a tag overager-period that does an auto passivate on bean that are older than the max-bean-age. But how can I do a passivate manually on every bean in the cache when I need it. Thanks for the help Francois Archambault ___ JBoss-user mailing list [EMAIL PROTECTED] http://lists.sourceforge.net/lists/listinfo/jboss-user
