You are using the source from cvs tip, right? Yesterday, I checked in the
new read ahead code. This code supports read ahead on-find and read ahead of
relationships. This required a change in the read-ahead metadata. The new
read ahead xml is as follows:
<read-ahead>
<strategy>on-load</strategy>
<page-size>500</page-size>
<eager-load-group>group name</eager-load-group>
</read-ahead>
strategy is required and must be none, on-load, or on-find.
page-size is the number of rows that the server will block load.
eager-load-group is the name of the load group which will be eager loaded
(either on-load or on-find).
The new read-ahead metadata can be in defaults, entity, query specification,
and relationship-role.
This change also necessated a change in load group specification. Now there
is a load-groups element which has load-groups elements. Each load-group has
a load-group-name and one or more field-names. Then entity eager-load-group
only contains the name of the load to eager load by default, and the
lazy-load-groups element contain one or more load-group-names. An example
follows:
<load-groups>
<load-group>
<load-group-name>basic</load-group-name>
<field-name>name</field-name>
<field-name>type</field-name>
</load-group>
<load-group>
<load-group-name>pricing info</load-group-name>
<field-name>unit</field-name>
<field-name>costPerUnit</field-name>
<field-name>weight</field-name>
</load-group>
<load-group>
<load-group-name>shipping info</load-group-name>
<field-name>weight</field-name>
<field-name>length</field-name>
<field-name>girth</field-name>
</load-group>
</load-groups>
<eager-load-group>basic</eager-load-group>
<lazy-load-groups>
<load-group-name>basic</load-group-name>
<load-group-name>pricing info</load-group-name>
<load-group-name>shipping info</load-group-name>
</lazy-load-groups>
Read the dtd for more info. You should be able to add cmr fields that have
a foreign key to a load group. Not all of this works perfectly yet, but you
get the idea. I'm an testing this and fixing bugs right now.
-dain
> -----Original Message-----
> From: Steve Knight [mailto:[EMAIL PROTECTED]]
> Sent: Wednesday, January 16, 2002 1:55 PM
> To: [EMAIL PROTECTED]
> Subject: [JBoss-user] Problem with CMP2.0 example
>
>
>
> Before I start banging my head against the wall...does anyone
> know of any
> obvious reasons why the cmp2.0 example fails to deploy in JBoss 3.0a.
> Here is the Exception:
>
>
> 2002-01-16 14:22:28,650 DEBUG
> [org.jboss.ejb.plugins.cmp.jdbc.JDBCStoreManager.AddressEJB]
> Initializing
> CMP plugin for AddressEJB
> 2002-01-16 14:22:31,120 DEBUG
> [org.jboss.ejb.plugins.cmp.jdbc.JDBCStoreManager.AddressEJB] Loading
> standardjbosscmp-jdbc.xml :
> file:/D:/cygwin/home/KnightS/MyCVS/jboss-all/build/output/jbos
> s-3.0.0alpha/conf/default/standardjbosscmp-jdbc.xml
> 2002-01-16 14:22:31,950 DEBUG
> [org.jboss.ejb.plugins.cmp.jdbc.JDBCStoreManager.AddressEJB]
> jar:file:/D:/cygwin/home/KnightS/MyCVS/jboss-all/build/output/
jboss-3.0.0alpha/tmp/deploy/Default/cmp2->
example.ear/ejb1003.jar!/META-INF/jbosscmp-jdbc.xml
> found. Overriding defaults
> 2002-01-16 14:22:32,170 ERROR
> [org.jboss.ejb.ContainerFactory] Could not
> deploy
> file:/D:/cygwin/home/KnightS/MyCVS/jboss-all/build/output/jbos
> s-3.0.0alpha/tmp/deploy/Default/cmp2-example.ear
> org.jboss.deployment.DeploymentException: expected one strategy tag
> at org.jboss.metadata.MetaData.getUniqueChild(MetaData.java:95)
> at
> org.jboss.metadata.MetaData.getUniqueChildContent(MetaData.java:202)
> at
> org.jboss.ejb.plugins.cmp.jdbc.metadata.JDBCReadAheadMetaData.
> <init>(JDBCReadAheadMetaData.java:91)
> at
> org.jboss.ejb.plugins.cmp.jdbc.metadata.JDBCEntityMetaData.<in
> it>(JDBCEntityMetaData.java:505)
> at
> org.jboss.ejb.plugins.cmp.jdbc.metadata.JDBCApplicationMetaDat
> a.<init>(JDBCApplicationMetaData.java:237)
> at
> org.jboss.ejb.plugins.cmp.jdbc.metadata.JDBCXmlFileLoader.load
> (JDBCXmlFileLoader.java:75)
> at
> org.jboss.ejb.plugins.cmp.jdbc.JDBCStoreManager.loadJDBCEntity
> MetaData(JDBCStoreManager.java:505)
> at
> org.jboss.ejb.plugins.cmp.jdbc.JDBCStoreManager.create(JDBCSto
reManager.java:277)
> at
> org.jboss.ejb.plugins.CMPPersistenceManager.create(CMPPersiste
nceManager.java:134)
> at
> org.jboss.ejb.EntityContainer.create(EntityContainer.java:309)
> at org.jboss.ejb.Application.start(Application.java:214)
> at
> org.jboss.ejb.ContainerFactory.deploy(ContainerFactory.java:389)
> at
> org.jboss.ejb.ContainerFactory.deploy(ContainerFactory.java:312)
> at java.lang.reflect.Method.invoke(Native Method)
> at
> com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.
java:1628)
> at
> com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.
java:1523)
> at
> org.jboss.deployment.J2eeDeployer.startModules(J2eeDeployer.java:468)
> at
> org.jboss.deployment.J2eeDeployer.startApplication(J2eeDeploye
r.java:439)
> at
> org.jboss.deployment.J2eeDeployer.deploy(J2eeDeployer.java:203)
> at java.lang.reflect.Method.invoke(Native Method)
> at
> com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.
java:1628)
> at
> com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.
java:1523)
> at
> org.jboss.deployment.AutoDeployer.deploy(AutoDeployer.java:681)
> at org.jboss.deployment.AutoDeployer.run(AutoDeployer.java:325)
> at java.lang.Thread.run(Thread.java:484)
> 2002-01-16 14:22:32,280 ERROR
> [org.jboss.deployment.J2eeDeployer#Default]
> Starting cmp2-example.ear failed!
> java.lang.NullPointerException
> at
> org.jboss.ejb.plugins.cmp.jdbc.JDBCStoreManager.stop(JDBCStore
Manager.java:348)
> at
> org.jboss.ejb.plugins.CMPPersistenceManager.stop(CMPPersistenc
eManager.java:180)
> at org.jboss.ejb.EntityContainer.stop(EntityContainer.java:375)
> at org.jboss.ejb.Application.stop(Application.java:240)
> at
> org.jboss.ejb.ContainerFactory.deploy(ContainerFactory.java:402)
> at
> org.jboss.ejb.ContainerFactory.deploy(ContainerFactory.java:312)
> at java.lang.reflect.Method.invoke(Native Method)
> at
> com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.
java:1628)
> at
> com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.
java:1523)
> at
> org.jboss.deployment.J2eeDeployer.startModules(J2eeDeployer.java:468)
> at
> org.jboss.deployment.J2eeDeployer.startApplication(J2eeDeploye
r.java:439)
> at
> org.jboss.deployment.J2eeDeployer.deploy(J2eeDeployer.java:203)
> at java.lang.reflect.Method.invoke(Native Method)
> at
> com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.
java:1628)
> at
> com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.
java:1523)
> at
> org.jboss.deployment.AutoDeployer.deploy(AutoDeployer.java:681)
> at org.jboss.deployment.AutoDeployer.run(AutoDeployer.java:325)
> at java.lang.Thread.run(Thread.java:484)
> 2002-01-16 14:22:32,330 INFO
> [org.jboss.deployment.J2eeDeployer#Default]
> Module cmp2-example.ear is not running
> 2002-01-16 14:22:32,330 DEBUG
> [org.jboss.management.j2ee.J2EEManagedObject]
> preDeregister(), parent:
> SingleJBoss:J2EEDomain=Manager,name=Single,type=J2EEServer
> 2002-01-16 14:22:32,390 INFO
> [org.jboss.deployment.J2eeDeployer#Default]
> Destroying application cmp2-example.ear
> 2002-01-16 14:22:32,390 INFO
> [org.jboss.deployment.J2eeDeployer#Default]
> Destroyed
> 2002-01-16 14:22:32,390 ERROR
> [org.jboss.deployment.AutoDeployer] Deployment
> failed:
> file:/D:/cygwin/home/KnightS/MyCVS/jboss-all/build/output/jbos
> s-3.0.0alpha/deploy/cmp2-example.ear
> org.jboss.deployment.J2eeDeploymentException: Error while starting
> cmp2-example.ear: null, Cause: java.lang.NullPointerException
> at
> org.jboss.deployment.J2eeDeployer.startModules(J2eeDeployer.java:554)
> at
> org.jboss.deployment.J2eeDeployer.startApplication(J2eeDeploye
r.java:439)
> at
> org.jboss.deployment.J2eeDeployer.deploy(J2eeDeployer.java:203)
> at java.lang.reflect.Method.invoke(Native Method)
> at
> com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.
java:1628)
> at
> com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.
java:1523)
> at
> org.jboss.deployment.AutoDeployer.deploy(AutoDeployer.java:681)
> at org.jboss.deployment.AutoDeployer.run(AutoDeployer.java:325)
> at java.lang.Thread.run(Thread.java:484)
>
>
>
> Thanks,
>
> Steve Knight
>
>
>
>
> _________________________________________________________________
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>
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