Help reg. read only CMP bean in the examples!!
Hi,
I have been working with examples of EJB in WLS 6.1
I used the Access database with CMP.
The basic entity beans, both CMP and BMP worked well.
However when I tried the read-only Stock Bean and write StockWriter Beans... I received the following error... I am not sure what does it say...
==============================================
Beginning readMostly.Client...
Creating a StockWriter for BEAS
There was an exception while creating and using the Beans.
This indicates that there was a problem communicating with the server: java.rmi.RemoteException: EJB Exception:; nested exception is:
java.sql.SQLException: [Microsoft][ODBC Microsoft Access Driver]Optional feature not implemented
Start server side stack trace:
java.rmi.RemoteException: EJB Exception:; nested exception is:
java.sql.SQLException: [Microsoft][ODBC Microsoft Access Driver]Optional feature not implemented
java.sql.SQLException: [Microsoft][ODBC Microsoft Access Driver]Optional feature not implemented
at sun.jdbc.odbc.JdbcOdbc.createSQLException(JdbcOdbc.java:6026)
at sun.jdbc.odbc.JdbcOdbc.standardError(JdbcOdbc.java:6183)
at sun.jdbc.odbc.JdbcOdbc.SQLBindInParameterFloat(JdbcOdbc.java:852)
at sun.jdbc.odbc.JdbcOdbcPreparedStatement.setLong(JdbcOdbcPreparedStatement.java:575)
at weblogic.jdbc.pool.Statement.setLong(Statement.java:369)
at weblogic.jdbc.rmi.internal.PreparedStatementImpl.setLong(PreparedStatementImpl.java:114)
at weblogic.jdbc.rmi.SerialPreparedStatement.setLong(SerialPreparedStatement.java:147)
at ejb.readMostly.StockWriterBean_u4qwd5__WebLogic_CMP_RDBMS.__WL_create(StockWriterBean_u4qwd5__WebLogic_CMP_RDBMS.java:589)
at ejb.readMostly.StockWriterBean_u4qwd5__WebLogic_CMP_RDBMS.ejbCreate(StockWriterBean_u4qwd5__WebLogic_CMP_RDBMS.java:518)
at java.lang.reflect.Method.invoke(Native Method)
at weblogic.ejb20.manager.DBManager.create(DBManager.java:519)
at weblogic.ejb20.manager.DBManager.remoteCreate(DBManager.java:489)
at weblogic.ejb20.internal.EntityEJBHome.create(EntityEJBHome.java:190)
at ejb.readMostly.StockWriterBean_u4qwd5_HomeImpl.create(StockWriterBean_u4qwd5_HomeImpl.java:78)
at ejb.readMostly.StockWriterBean_u4qwd5_HomeImpl_WLSkel.invoke(Unknown Source)
at weblogic.rmi.internal.BasicServerRef.invoke(BasicServerRef.java:305)
at weblogic.rmi.cluster.ReplicaAwareServerRef.invoke(ReplicaAwareServerRef.java:93)
at weblogic.rmi.internal.BasicServerRef.handleRequest(BasicServerRef.java:274)
at weblogic.rmi.internal.BasicExecuteRequest.execute(BasicExecuteRequest.java:22)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:139)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:120)
End server side stack trace
; nested exception is:
java.sql.SQLException: [Microsoft][ODBC Microsoft Access Driver]Optional feature not implemented
Start server side stack trace:
java.sql.SQLException: [Microsoft][ODBC Microsoft Access Driver]Optional feature not implemented
at sun.jdbc.odbc.JdbcOdbc.createSQLException(JdbcOdbc.java:6026)
at sun.jdbc.odbc.JdbcOdbc.standardError(JdbcOdbc.java:6183)
at sun.jdbc.odbc.JdbcOdbc.SQLBindInParameterFloat(JdbcOdbc.java:852)
at sun.jdbc.odbc.JdbcOdbcPreparedStatement.setLong(JdbcOdbcPreparedStatement.java:575)
at weblogic.jdbc.pool.Statement.setLong(Statement.java:369)
at weblogic.jdbc.rmi.internal.PreparedStatementImpl.setLong(PreparedStatementImpl.java:114)
at weblogic.jdbc.rmi.SerialPreparedStatement.setLong(SerialPreparedStatement.java:147)
at ejb.readMostly.StockWriterBean_u4qwd5__WebLogic_CMP_RDBMS.__WL_create(StockWriterBean_u4qwd5__WebLogic_CMP_RDBMS.java:589)
at ejb.readMostly.StockWriterBean_u4qwd5__WebLogic_CMP_RDBMS.ejbCreate(StockWriterBean_u4qwd5__WebLogic_CMP_RDBMS.java:518)
at java.lang.reflect.Method.invoke(Native Method)
at weblogic.ejb20.manager.DBManager.create(DBManager.java:519)
at weblogic.ejb20.manager.DBManager.remoteCreate(DBManager.java:489)
at weblogic.ejb20.internal.EntityEJBHome.create(EntityEJBHome.java:190)
at ejb.readMostly.StockWriterBean_u4qwd5_HomeImpl.create(StockWriterBean_u4qwd5_HomeImpl.java:78)
at ejb.readMostly.StockWriterBean_u4qwd5_HomeImpl_WLSkel.invoke(Unknown Source)
at weblogic.rmi.internal.BasicServerRef.invoke(BasicServerRef.java:305)
at weblogic.rmi.cluster.ReplicaAwareServerRef.invoke(ReplicaAwareServerRef.java:93)
at weblogic.rmi.internal.BasicServerRef.handleRequest(BasicServerRef.java:274)
at weblogic.rmi.internal.BasicExecuteRequest.execute(BasicExecuteRequest.java:22)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:139)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:120)
End server side stack trace
End readMostly.Client...
==========================================
please help
SP
[att1.html]
<entity-cache>
<max-beans-in-cache>...</max-beans-in-cache>
<read-timeout-seconds>...</read-timeout-seconds>
<concurrency-strategy>ReadOnly</concurrency-strategy>
</entity-cache>
I believe this is what you are looking for and this is part of entity-descriptor.
-- Prasad
Aruna wrote:
> Hi
> I am trying to develop few entity beans which is for only reading the
> data from the data base, As Read only entity beans are treated like stateless
> session beans(ie lead balancing at method calls as well auto failover) in the
> cluster. I want to know how to specify an entity bean as read only entity bean???
> ie in deployment descriptor so that ejb container treats it as a read only entity
> bean.
>
> Any help on this highly appreciated
>
> Thanks and Regards
> Aruna
Similar Messages
-
Load balancing not happending but fail over is for Read only Entity beans
The following are the configuration.
Two NT servers with WL5.1 sp9 having only EJBs(Read only entity beans)
One Client with WL5.1 sp9 having servlet/java application as
EJB client.
I am trying to make a call like findbyprimarykey in one of the
entity bean. I could see the request is being directed only to the one of the
server always. When I bring that server, fail over is happening to the other server.
Here are the settings I have in the ejb-jar.xml :
<entity>
<ejb-name>device.StartHome</ejb-name>
<home>com.wl.api.device.StartHome</home>
<remote>com.wl.api.device.StartRemote</remote>
<ejb-class>com.wl.server.device.StartImpl</ejb-class>
<persistence-type>Bean</persistence-type>
<prim-key-class>java.lang.Long</prim-key-class>
<reentrant>False</reentrant>
<resource-ref>
<res-ref-name>jdbc/wlPool</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
</resource-ref>
</entity>
Here are the settings I have in the weblogic-ejb-jar.xml.
<weblogic-enterprise-bean>
<ejb-name>device.StartHome</ejb-name>
<caching-descriptor>
<max-beans-in-cache>50</max-beans-in-cache>
<cache-strategy>Read-Only</cache-strategy>
<read-timeout-seconds>900</read-timeout-seconds>
</caching-descriptor>
<reference-descriptor>
<resource-description>
<res-ref-name>jdbc/wlPool</res-ref-name>
<jndi-name>weblogic.jdbc.pool.wlPool</jndi-name>
</resource-description>
</reference-descriptor>
<enable-call-by-reference>False</enable-call-by-reference>
<jndi-name>device.StartHome</jndi-name>
</weblogic-enterprise-bean>
Am I doin any mistake in this?
Any one's help is appreciated.
Thanks
Suresh
we are using 5.1
"Gene Chuang" <[email protected]> wrote in message
news:[email protected]...
> Colocation optimization occurs if your client resides in the same
container (and also in the same
> EAR for 6.0) as your ejbs.
>
> Gene
>
> "Suresh" <[email protected]> wrote in message
news:[email protected]...
> > Ok....the ejb-call-by-reference set to true is making the call to one
server
> > only. i am not sure why it is. I removed the property name and it
works.
> > Also I have one question, in our prduct environment, when i cache the
ejb
> > home it is not doing the load balancing. can any one help me for that.
> > thanks
> >
> > Mike,
> > From the sample pgm I sent, even from single client calls get load
> > balanced.
> >
> > Suresh
> >
> >
> > "Gene Chuang" <[email protected]> wrote in message
> > news:[email protected]...
> > > In WL, LoadBalancing will ONLY WORK if you reuse your EJBHome! Take
your
> > StartEndPointHome lookup
> > > out of your for loop and see if this fixes your problem.
> > >
> > > I've seen this discussion in ejb-interest, and some other vendor
(Borland,
> > I believe it is), brings
> > > up an interesting point: Clustering and LoadBalance is not in the
J2EE
> > specs, hence implementation
> > > is totally up to the vendor. Weblogic loadbalances from the remote
> > interfaces (EJBObject, EJBHome,
> > > etc..), while Borland loadbalances from JNDI Context lookup.
> > >
> > > Let me suggest a third implmentation: loadbalance from BOTH Context
> > lookup as well as stub method
> > > invocation! Or create a smart replica-aware list manager which
persists
> > on the client thread
> > > (ThreadLocal) and is aware of lookup/evocation history. Hence if I do
the
> > following in a client
> > > hitting a 3 node cluster, I'll still get perfect round-robining
regardless
> > of what I do on the
> > > client side:
> > >
> > > InitialContext ctxt = new InitialContext();
> > > EJBHome myHome = ctxt.lookup(MY_BEAN);
> > > myHome.findByPrimaryKey(pk); <== hits Node #1
> > > myHome = ctxt.lookup(MY_BEAN);
> > > myHome.findByPrimaryKey(pk); <== hits Node #2
> > > myHome.findByPrimaryKey(pk); <== hits Node #3
> > > myHome = ctxt.lookup(MY_BEAN);
> > > myHome.findByPrimaryKey(pk); <== hits Node #1
> > > ...
> > >
> > >
> > > Gene
> > >
> > > "Suresh" <[email protected]> wrote in message
> > news:[email protected]...
> > > > Mike ,
> > > >
> > > > Do you have any reasons for the total number of machines to be 10.
> > > >
> > > > I tried with 7 machines.
> > > >
> > > >
> > > > Here is my sample client java application running individual in the
> > seven
> > > > machines.
> > > >
> > > > StartEndPointHome =
> > > > (StartEndPointHome)ctx.lookup("dev.StartEndPointHome");
> > > > for(;;)
> > > > {
> > > > // logMsg(" --in loop "+currentTime);
> > > > if (currentTime > nextRefereshTime)
> > > > {
> > > > logMsg("****- going to call");
> > > > currentTime=getSystemTime();
> > > > nextRefereshTime=currentTime+timeInterval;
> > > > StartEndPointHome =
> > > > (StartEndPointHome)ctx.lookup("dev.StartEndPointHome");
> > > > long rndno=(long)(Math.random()*10)+range;
> > > > logMsg(" going to call remotestub"+rndno);
> > > > retVal =
> > > >
> >
((StartEndPointHome)getStartHome()).findByNumber("pe"+rndno+"_mportal_dsk36.
> > > > mportal.com");
> > > >
> > > > logMsg("**++- called stub");
> > > > }
> > > >
> > > >
> > > >
> > > > The range value is different for each of the machines in the
cluster.
> > > >
> > > > If the first request starts at srv1, all request starts hitting the
same
> > > > server.
> > > > If the first request starts at srv2, all request starts hitting the
same
> > > > server.
> > > >
> > > > I have the following for the url , user and pwd values for the
context
> > .
> > > >
> > > > public static String url="t3://10.11.12.14,10.11.12.117:8000";
> > > > public static String user="guest";
> > > > public static String password="guest";
> > > >
> > > >
> > > >
> > > > It would be great if you could help me.
> > > >
> > > > Thanks
> > > > suresh
> > > >
> > > >
> > > > "Mike Reiche" <[email protected]> wrote in message
> > > > news:[email protected]...
> > > > >
> > > > > If you have only one client don't be surprised if you only hit one
> > server.
> > > > Try
> > > > > running ten different clients and see if the hit the same server.
> > > > >
> > > > > Mike
> > > > >
> > > > >
> > > > > "suresh" <[email protected]> wrote:
> > > > > >
> > > > > >The following are the configuration.
> > > > > >
> > > > > > Two NT servers with WL5.1 sp9 having only EJBs(Read only entity
> > beans)
> > > > > >
> > > > > > One Client with WL5.1 sp9 having servlet/java application as
> > > > > > EJB client.
> > > > > >
> > > > > >
> > > > > >I am trying to make a call like findbyprimarykey in one of the
> > > > > >entity bean. I could see the request is being directed only to
the
> > one
> > > > > >of the
> > > > > >server always. When I bring that server, fail over is happening
to
> > the
> > > > > >other server.
> > > > > >
> > > > > >
> > > > > >Here are the settings I have in the ejb-jar.xml :
> > > > > > <entity>
> > > > > > <ejb-name>device.StartHome</ejb-name>
> > > > > > <home>com.wl.api.device.StartHome</home>
> > > > > > <remote>com.wl.api.device.StartRemote</remote>
> > > > > > <ejb-class>com.wl.server.device.StartImpl</ejb-class>
> > > > > > <persistence-type>Bean</persistence-type>
> > > > > > <prim-key-class>java.lang.Long</prim-key-class>
> > > > > > <reentrant>False</reentrant>
> > > > > > <resource-ref>
> > > > > > <res-ref-name>jdbc/wlPool</res-ref-name>
> > > > > > <res-type>javax.sql.DataSource</res-type>
> > > > > > <res-auth>Container</res-auth>
> > > > > > </resource-ref>
> > > > > > </entity>
> > > > > >
> > > > > >
> > > > > >Here are the settings I have in the weblogic-ejb-jar.xml.
> > > > > >
> > > > > ><weblogic-enterprise-bean>
> > > > > > <ejb-name>device.StartHome</ejb-name>
> > > > > >
> > > > > > <caching-descriptor>
> > > > > > <max-beans-in-cache>50</max-beans-in-cache>
> > > > > > <cache-strategy>Read-Only</cache-strategy>
> > > > > > <read-timeout-seconds>900</read-timeout-seconds>
> > > > > > </caching-descriptor>
> > > > > >
> > > > > > <reference-descriptor>
> > > > > > <resource-description>
> > > > > > <res-ref-name>jdbc/wlPool</res-ref-name>
> > > > > > <jndi-name>weblogic.jdbc.pool.wlPool</jndi-name>
> > > > > > </resource-description>
> > > > > > </reference-descriptor>
> > > > > > <enable-call-by-reference>False</enable-call-by-reference>
> > > > > > <jndi-name>device.StartHome</jndi-name>
> > > > > > </weblogic-enterprise-bean>
> > > > > >
> > > > > >
> > > > > >Am I doin any mistake in this?
> > > > > >
> > > > > >Any one's help is appreciated.
> > > > > >Thanks
> > > > > >Suresh
> > > > >
> > > >
> > > >
> > >
> > >
> >
> >
>
>
-
Primary Key for Read Only Entity Beans In EJB 3.0
Hi,
I have checked the spec for ejb 3.0 which mentions that, there is no common standard for the vendor to implement the Read only Entity Beans.
My question over here is how it is implemented in OC4J??
Do we need to specify a primary key attribute in the read-only entity bean?
w.r.t BC4J(ADF) i remember, we used to create a read-only View Object with out specifying a primary key.
Just want to check is that the way it works in EJB 3.0 (Implemented by OC4J).
Thanks for your help in advance.
ShivaHi,
Try using the JBoss embedded container:
http://docs.codehaus.org/display/MAVENUSER/How+to+use+the+JBoss+Embedded+EJB3+Container+for+Unit+testing
/klejs -
Exception: non-read-only mapping defined for the primary key field
Hello.
I'm new to Oracle and I created Java EE Web Project.
And I created entities from tableA, tableB, tableC from my database.
tableA has foreign key to tableB and has unidirectional Many-to-One relationship. tableC has two primary keys and one of these is foreign key to primary key in tableA. tableC also has unidirection Many-to-One relationship to tableA.
Then I created session bean and data control from it, in design window, created read-only table from tableA.
And I selected columns in tableA and also in tableB.
I ran the application and saw the following exception in log window.
Local Exception Stack:
Exception [EclipseLink-46] (Eclipse Persistence Services - 2.1.3.v20110304-r9073): org.eclipse.persistence.exceptions.DescriptorException
Exception Description: There should be one non-read-only mapping defined for the primary key field [tableC.tableA_ID].
Descriptor: RelationalDescriptor(mypack.tableC --> [DatabaseTable(tableC)])
tableA_ID is a primary key in tableA.
How can I solve this error?
Please help me.
Edited by: 900471 on 2011. 12. 3 오전 5:32
Edited by: 900471 on 2011. 12. 3 오전 5:33
Edited by: 900471 on 2011. 12. 3 오전 5:33
Edited by: 900471 on 2011. 12. 3 오전 5:34There are not enough details to be sure since you have not provided the mappings. From just the error, it looks like you are using the tableC.tableA_ID field as the foreign key in the ManyToOne relationship to A, but have marked it as insertable=false, writeable=false, meaning that it cannot be updated or used for inserts.
Either make it writable (set the settings to true), or add another basic mapping/attribute in the entity for TableC that maps to the field which you can use to set when you insert a new tableC entity. A simple example is available at
http://wiki.eclipse.org/EclipseLink/Examples/JPA/2.0/DerivedIdentifiers
Best Regards,
Chris -
Read Only Entity Bean will not cache
I'm using the Sun Java Application Server version 8.2. I've created a read only entity bean with a 900 second refresh. This bean has a findAll() method that I've created. The table it is reading from has only 22 rows of data that doesn't change (well, maybe 2 or 3 times a year).
As stated I've set the read-only property to true and the refresh to 900 seconds. I've also set the caching settings, which I guess i don't really need to mess with from the defaults.
I do not seem to be achieving any caching at all. My check for this is very simple. I simply load a drop down in the client application with these 22 values. After the intial load I add another row in the database. The newley added row always shows up in the drop down in real time. If i'm caching correctly I shouldn't see this value until the refresh time of 900 seconds. Is there something I am missing? I'm using NetBeans 5.0 to set the values of the entity beans and such.
Thanks for the help!
ryanHi Ryan,
The 8.2 read-only bean implementation still executes non-findByPrimaryKey queries within the database.
If your application calls findByPrimaryKey or accesses a business method on one of the
read-only beans returned from a query, that will not result in a database access (unless a refresh
period boundary is crossed).
We have added the additional optimization of caching specific result sets of non-findByPrimaryKey
read-only bean finders in the latest development version of Glassfish (V2).
https://glassfish.dev.java.net/public/downloadsindex.html#Official_supported_builds
It will also be available in our Application Server release 9.1. There are no plans to backport this
optimization to the 8.2 codebase.
--ken -
Problem with Read-Only Entity Bean
Hi All,
I have an Read-Only BMP that just read data from 20 tables and stores them in a Collection. In a 'Read-Only' Entity bean, the ejbLoad() is supposed to called periodically as defined by 'read-timeout-seconds' parameter in 'weblogic-ejb-jar.xml'. But this doesn't happen. Every time I invoke the EJB, ejbCreate() and ejbLoad() get called. Any suggestions will be highly appreciated.
Here is the content of my 'weblogic-ejb-jar.xml' file.
<?xml version="1.0"?>
<!DOCTYPE weblogic-ejb-jar PUBLIC
'-//BEA Systems, Inc.//DTD WebLogic 6.0.0 EJB//EN'
'http://www.bea.com/servers/wls600/dtd/weblogic-ejb-jar.dtd'>
<weblogic-ejb-jar>
<weblogic-enterprise-bean>
<ejb-name>beanManaged</ejb-name>
<entity-descriptor>
<entity-cache>
<max-beans-in-cache>1</max-beans-in-cache>
<read-timeout-seconds>5</read-timeout-seconds>
<concurrency-strategy>ReadOnly</concurrency-strategy>
</entity-cache>
</entity-descriptor>
<jndi-name>beanManaged</jndi-name>
</weblogic-enterprise-bean>
</weblogic-ejb-jar>
Thanks,
PremYes, it calls ejbLoad() at intervals defined by read-timeout-seconds, but only when bean
is requested by the client, and the cached copy is old. If bean just sits in the cache
unused no ejbLoad()'s will be called.
Prem Raghupathy <[email protected]> wrote:
The weblogic document on 'Setting Entity EJBs to Read-Only' says "WebLogic Server
never calls ejbStore() for a read-only entity EJB. ejbLoad() is called initially
when the EJB is created; afterwards, WebLogic Server calls ejbLoad() only at intervals
defined by the read-timeout-seconds deployment parameter.". Here is the link to
the document
http://edocs.bea.com/wls/docs61/ejb/EJB_environment.html#1074846
Dimitri Rakitine <[email protected]> wrote:
WebLogic doesn't reload Read-Only entity beans periodically. It loads
bean instance only when client requests it, and instance is not in the
cache, or cached instance is older than read-timeout-seconds.
Prem Raghupathy <[email protected]> wrote:
This is a multi-part message in MIME format.
---=_newsgroups3c21148f
Content-Type: text/plain
Content-Transfer-Encoding: 7bit
Rajesh,
Thanks for your reply. I’m using WL6.1 sp1. When I log the methodcalls,
this is what I see on the server console.
SetEntityContext()
ejbCreate()
ejbPostCreate()
ejbLoad()
As you see, the ejbLoad() doesn’t get called every 5 sec, eventhough I
set the ‘read-timeout-seconds=5’ in the weblogic-ejb-jar.xml,
Do you have a working example for Read-Only BMP on WL6.1? The examplesdirectory
in weblogic 6.1 doesn’t have one.
Also find attached all the files. Any suggestions will be highly appreciated.
Thanks,
Prem.
Rajesh Mirchandani <[email protected]> wrote:
What version of the Server and Service pack are you using? Turn on
JDBC
logging and see if every ejbLoad() hits the DB.
prem wrote:
Hi All,
I have an Read-Only BMP that just read data from 20 tables and storesthem in a Collection. In a 'Read-Only' Entity bean, the ejbLoad() is
supposed to called periodically as defined by 'read-timeout-seconds'
parameter in 'weblogic-ejb-jar.xml'. But this doesn't happen. Every
time I invoke the EJB, ejbCreate() and ejbLoad() get called. Any suggestions
will be highly appreciated.
Here is the content of my 'weblogic-ejb-jar.xml' file.
<?xml version="1.0"?>
<!DOCTYPE weblogic-ejb-jar PUBLIC
'-//BEA Systems, Inc.//DTD WebLogic 6.0.0 EJB//EN'
'http://www.bea.com/servers/wls600/dtd/weblogic-ejb-jar.dtd'>
<weblogic-ejb-jar>
<weblogic-enterprise-bean>
<ejb-name>beanManaged</ejb-name>
<entity-descriptor>
<entity-cache>
<max-beans-in-cache>1</max-beans-in-cache>
<read-timeout-seconds>5</read-timeout-seconds>
<concurrency-strategy>ReadOnly</concurrency-strategy>
</entity-cache>
</entity-descriptor>
<jndi-name>beanManaged</jndi-name>
</weblogic-enterprise-bean>
</weblogic-ejb-jar>
Thanks,
Prem--
Rajesh Mirchandani
Developer Relations Engineer
BEA Support
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---=_newsgroups3c21148f----
Dimitri
Dimitri -
Read Only entity beans and Finders
Hi,
We are using Read Only entity beans with WLS 7.0 SP1 for some entities that represent Reference Data that will never change. What I would like to know is whether WLS needs to hit the database when a finder on these beans is run or does WLS cache the results of the Finder also?
Thanks.
SantoshHi,
we use read only entity beans. It is beneficial if have findByPrimaryKey finders. but we also have finders on non primary key coloumn also. is there a way to cache such local references returned by such non primary key finders also. -
Session bean calling read-only entiti bean
I have a session bean that is calling a read-only entity bean. I gets the remote
reference to the bean ok but when I call a method on the entity bean it locks.
After 5 minutes the call executes but then the session bean times out. Is there
any special setting I need to do this? I set both transaction attributes to Required.
Thanks,
Tim5.1
Seth White <[email protected]> wrote:
>
Hi.
What release are you using?
Seth
Tim wrote:
I have a session bean that is calling a read-only entity bean. I getsthe remote
reference to the bean ok but when I call a method on the entity beanit locks.
After 5 minutes the call executes but then the session bean timesout. Is there
any special setting I need to do this? I set both transaction attributesto Required.
Thanks,
Tim -
Input Help for Read Only Inputfield
I have a requirement where an inputfield should be grayed-out so the user can't simply type whatever they want into the field. However, the user should still be able to change the value of the inputfield via the input help (F4). After searching around in the forums, I see that the only way to do this is to use a custom input help (as opposed to DDIC or OVS). I've done that, and it works fine when the inputfield is open. However, as soon as I set the inputfield to "Read Only", the input help button goes away.
How do I get the input help button to stay even though the field is set to "Read Only"?
Thanks,
Tom PengHi,
I have a requirement where an inputfield should be grayed-out so the user can't simply type whatever they want into the field.
If the user shouldnot enter the data what ever he wants in input field ,you can use foreign key check ,
So that it throws an error message, when use enters the data other than the values in F4 help.
So with out making the field read only you can solve the problem.
Priya -
How can I have both functions "Read Only" & "Write" mode on the same form?
Dear all,
How can I have both functions "Read Only" & "Write" mode on the same form? Is it possibile for this?
Please advice,
AmyThis is what I use in some dialogs:
PROCEDURE SET_QUERY_ONLY IS
-- Procedure Set_query_only
-- Rend les blocks non modifiables --
-- Disable menus Insert/Delete/Clear --
-- Entree :
-- Sortie :
-- Ent/Sortie :
-- Creation : FD 10/2003
-- Modification :
LC$Block Varchar2(30) ;
BEGIN
Set_Menu_Item_Property('Edit.Insert', ENABLED, PROPERTY_FALSE ) ;
Set_Menu_Item_Property('Edit.Remove', ENABLED, PROPERTY_FALSE ) ;
Set_Menu_Item_Property('Edit.Clear', ENABLED, PROPERTY_FALSE ) ;
Set_Menu_Item_Property('Action.Save', ENABLED, PROPERTY_FALSE ) ;
LC$Block := get_form_property( NAME_IN('System.Current_Form'), FIRST_BLOCK ) ;
-- Tous les blocs en Query only --
While LC$Block is not null Loop
Enable_Block( LC$Block, FALSE ) ;
LC$Block := get_block_property( LC$Block, NEXTBLOCK ) ;
End loop ;
END;
PROCEDURE ENABLE_BLOCK
PC$Block in Varchar2,
PB$Enable in Boolean Default TRUE
) IS
-- Procedure Enable_block
-- Rend le bloc Enable / Disable --
-- Entree : PC$Block (nom du bloc Forms)
-- : PB$Enable (TRUE ou FALSE)
-- Sortie :
-- Ent/Sortie :
-- Creation : FD 10/2003
-- Modification :
BEGIN
If PB$Enable Then
Set_Block_Property( PC$Block, INSERT_ALLOWED, PROPERTY_TRUE ) ;
Set_Block_Property( PC$Block, UPDATE_ALLOWED, PROPERTY_TRUE ) ;
Set_Block_Property( PC$Block, DELETE_ALLOWED, PROPERTY_TRUE ) ;
Set_Menu_Item_Property('Edit.Insert', ENABLED, PROPERTY_TRUE ) ;
Set_Menu_Item_Property('Edit.Remove', ENABLED, PROPERTY_TRUE ) ;
Set_Menu_Item_Property('Edit.Clear', ENABLED, PROPERTY_TRUE ) ;
Set_Menu_Item_Property('Action.Save', ENABLED, PROPERTY_TRUE ) ;
Else
Set_Block_Property( PC$Block, INSERT_ALLOWED, PROPERTY_FALSE ) ;
Set_Block_Property( PC$Block, UPDATE_ALLOWED, PROPERTY_FALSE ) ;
Set_Block_Property( PC$Block, DELETE_ALLOWED, PROPERTY_FALSE ) ;
Set_Menu_Item_Property('Edit.Insert', ENABLED, PROPERTY_FALSE ) ;
Set_Menu_Item_Property('Edit.Remove', ENABLED, PROPERTY_FALSE ) ;
Set_Menu_Item_Property('Edit.Clear', ENABLED, PROPERTY_FALSE ) ;
Set_Menu_Item_Property('Action.Save', ENABLED, PROPERTY_FALSE ) ;
End if ;
END;Francois -
Re: Read Only Entity Bean
I am trying to convert an entity bean into a read only bean .
I am not sure how it works ? I read the documentation and it said that I had to
set
the following parameters
cache-strategy>Read-Write</cache-strategy>
read-timeout-seconds>100</read-timeout-seconds>
If I set the time out time to 100 seconds will the container call the ejbLoad
method
to reload the bean after every 100 seconds or only when the a request is made
on the
bean
Thanks a lot in advance for your answers.Kevin,
"Kevin" <[email protected]> wrote in message
news:3ec25923$[email protected]..
I am trying to convert an entity bean into a read only bean .
I am not sure how it works ? I read the documentation and it said that Ihad to
set
the following parameters
cache-strategy>Read-Write</cache-strategy>
read-timeout-seconds>100</read-timeout-seconds>
If I set the time out time to 100 seconds will the container call theejbLoad
method
to reload the bean after every 100 seconds or only when the a request ismade
on the
bean
Thanks a lot in advance for your answers.read-timeout-seconds make sense only for Read-Only
cache strategy and defines cache element expiration time.
For Read-Write strategy data will be loaded from the database
in with every new transaction (if db-is-shared set to true).
Hope this helps.
Regards,
Slava Imeshev -
Problem clicking on Read Only Logical Beans/Bean Modules
Hi,
I'm using Sun Java Studio 5 update 1 and use MS VSS to control my source. I have not integrated VSS with the s1s5. When I click on a read only module of beans, the ide pops up a whole lot of messages saying that it can't lock files because they are read only. So, I have to manually remove the read only attribute of the files, specially the .entejb and the .ejbdd files. This is a huge burden to me since some of my modules have more than 50 beans inside and it gives 50x2 popup messages when I expand the module.
can anybody give me a solution to this?
Thank you.Have you tried mounting as a Version Control filesystem. There is a topic in the Online Help titled "EJB Module Node" that might be helpful.It only mentions CVS and Clearcase as supported control systems. This might be because the topic was written before VSS support was added.
-
Is there any way to mark an entity bean as read only? I'm using glassfish V2.
JPA does not define a read-only concept, but TopLink Essentials (glassfish v2 persistence) does. You can use a DescriptorCustomizer to set your TopLink Descriptor to be read-only (descriptor.setReadOnly()).
TopLink 11g, and EclipseLink (Glassfish v3) also provider a query hint for returning read-only objects at the query level ("eclipselink.return-shared").
-- James : EclipseLink -
Windows 7 reads only 2.3 of the 4 gb ram
Dear Sirs
I have 4 GB ram and 2 vga cards
Intel 288 hd graphics
Geforce gt 330m 512 mb
when i installed windows 7 on my macbook pro it only reads 1 graphic which is geforce and only 2.3 of the 4 GB Ram can you help me and tell me what can i doDid you install the 32bit or the 64 bit version of Windows 7?
The 64bit can address more RAM.
Windows just accessing your dedicated video card is fine, the Intel HD graphics is junky anyway. -
Read only text Items uses the maximum width
Folks,
I have a form with 3 regions and each region has 6 or more text items each with a different width (40, 30 24, 2...). I am using a Read Only Condition Type on all these items to disable them. I am setting the background color as bgcolor="#DCDCDC" in the Read Only Element Table Cell Attributes.
All my elements are disabled (Gray color) but with the maximum width of 40 bytes. I don't want a 2 byte text item 40 bytes long and grayed out. How can I set a specific width for individual items in Read only Condition? Please help
Thanks
Raje.Try this alternative by disabling the HTML Form Item at the required process point.
I added this JavaScript to the HTML Header of the page which will allow me to disable the required item, plus set its background and color:-
<script language="JavaScript1.1" type="text/javascript">
function disableFormItem(p_item, p_background, p_color){
disItem = document.getElementById(p_item);
disItem.style.background = p_background;
disItem.disabled = true;
disItem.style.color = p_color;
</script>In the Region Footer of the Region where my items are located I added this JavaScript code:-
<script language="JavaScript" type="text/javascript">
** Only disable the required Form Items if the Primary Key value is present,
** in this case it is P12_UEI. (Won't be present for new records as populated
** by on-insert db trigger and sequence.)
if (html_GetElement('P12_UEI').value > 0)
disableFormItem('P12_URESI', 'lightyellow', 'black');
disableFormItem('P12_UZI', 'lightgray', 'black');
disableFormItem('P12_UBI', 'lightgray', 'black');
</script> The resulting page is a lot better looking than using the APEX read only text item.
Regards,
Phil
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