OC4J: EJB FREEZING IN FINDER METHOD

I HAVE VARIOUS EJB BASED ON VIEWS, AND ALL EXCEPT ONE FREEZES WHEN I INVOQUE IT'S FINDER METHODS. I HAVE CHECKED EVERYTHING AND FOUND THE FOLLOWING MESSAGES:
Thr[thread 5]-DriverManagerPooledConnection.close(): begin---this.nextConnectionNumber=1
Thr[thread 5]-DriverManagerPooledConnection.close(): begin---this.closed=false
AND IT LOOPS FOREVER WITH THE FOLLOWING MESSAGES:
Thr[thread 5]-ApplicationServerTransaction.setRollbackOnly(message, Throwable_Obj): begin--message=timed out
Thr[thread 5]-ApplicationServerTransaction.setRollbackOnly(message, Throwable_Obj): begin--Throwable_Obj=null
Thr[thread 5]-ApplicationServerTransaction.setRollbackOnly(message, Throwable_Obj): end
Erika.

Hi Erika,
It looks like you are running OC4J in "debug" mode. I don't know whether this will help you, but I have found that sometimes, running in debug mode can cause problems, but these problems will "disappear" when not running in debug mode. So have you tried running OC4J in "normal" (i.e. not debug) mode?
Good Luck,
Avi.

Similar Messages

Vendor-ejb-jar.xml to orion-ejb-jar.xml, finder methods

Hello
I want to convert a inprise based EJB 1.1 application from inprise to OC4J. The inprise based finder methods are quite different from the syntax of orion-ejb-jar.xml, regarding the finder methods. Does anyone know if this can be done more easily. Using JDev 903_pre does not help much. I dont have access to JBuilder either. It seems I have to write all the finder methods once more and it takes days.
Any hints ?
Ana Maria

OC4J does not require all finder methods in the orion-ejb-jar.xml and it automatically generates all simple finder methods. The easiest thing to do is deploy the EJBs into OC4J and it will generate the finder methods in the $OC4J_HOME/j2ee/home/application-deployment/<application-name>/ejb-jar-name/ directory and then you can modify these per your requirement and package with your EJBs.
hope this helps
thanks
Debu

Ejb-ql in finder method

Hi all,
I have a table which has no primary key then I made the complex primary key by 2 fields which are foriegn keys(Primary key in other tables or entity beans) , the problem is that whenever I write a finder method ,I face with an error telling these 2 fields are not cmp field .
could you please guide me .In addition I need a finder method which gets 2 parameters (the 2 foriegn keys) then return the the raw.
Not having known so much about reletionship in EJB ,please give me a sample code
Cheers
Pooyan

What do you expect us to tell without even a small description of your problem (a stack trace or error message would have been helpful). Anyway, read here... you should find some sample code too.
http://www.theserverside.com/books/masteringEJB/index.jsp

CMP and Finder methods

I've got a table:
id number primary key,
name varchar2(50),
price number
How can i make finderXXX for this sql query:
select * from table where name like 'beer' and price > 10;
Thank's

gday Max -
For this, you'll need to make some a slight modification to the generated finder methods.
Say you create an entity called Drinks which has the same structure as the table you provide as an example (and can I just say, what a great example you chose ;)
It should go something like this - note, I've not tried this but this is what you need to look at doing:
In the Home interface (DrinksHome) create a findermethod that looks like:
public Collection findByName(String name, Double Price) throws RemoteException, FinderException;
* note we make the return type a collection since it's possible that you may get more than one entity returned.
Go ahead and deploy your EJB.
When you deploy your EJB, OC4J will generate a finder method for this method for you.
Now what you need to do is to modify the generated XML deployment descriptor to tune the query if you will.
OC4J generates the deployment descriptor info it needs for an application in $OC4J/application-deployments.
Go to to $OC4J/application-deployments/<app-name>/<ejb-name> where app-name and ejb-name are specific your deployed EJB.
Open the orion-ejb-jar.xml file. This is the file OC4J uses to describe the deployed beans.
Search through the file until you find the <finder-method> tag.
Amend the query attribute of the finder-method tag to reflect the where clause of the query you want to execute:
query="$name = $1 AND $price > $2"
Now go to the generated SQL string and add the corresponding SQL where condition, using a ? in place of the actual value of the query string above
It would become something like ...
< !-- Generated SQL: "select drinks.id, drinks.name, drinks.price from drinks where drinks.name = ? AND drinks.price > ?" -->
Note that in this query, the where clause matches the query you specified, but you omit the actual values.
Check the method-params defined for the find below and ensure that the order of them lines up with the values you've specified in the finder query.
Stop OC4J and restart it and the new finderMethod should come into effect.
Give that a try and see how you go.
cheers!
-steve-
null

How to add a finder method in the container manager Bean in the weblogic6.1

in the environment jbuilder6 andweblogic6.1,use container manager entity Bean,it can automatic generate the findAll() method,I want to add a new method to find an element in the home interface,such as findByName(),name is a element of a table of the database.in the weblogic-cmp-rdbms-jar.xml,this is part of the fiile:
<finder>
<finder-name>findAll</finder-name>
<finder-query><![CDATA[ (= 1 1) ]]></finder-query>
</finder>
<finder>
<finder-name>findByName</finder-name>
<finder-param>java.lang.String</finder-param>
<finder-query><![CDATA[ (=name $name) ]]></finder-query>
</finder>
It can successfully compile the findAll(),but it is wrong when compile the findByName(),as follows
"www.ejbgrpx": Method Name: findByName
"www.ejbgrpx": Invalid specifications for a WebLogic RDBMS CMP EJB.
"www.ejbgrpx": ERROR: Error from ejbc: weblogic.ejb20.cmp11.rdbms.finders.IllegalExpressionException:
"www.ejbgrpx": While trying to process Finder
"www.ejbgrpx": Parameter Types: (java.lang.String)
"www.ejbgrpx": WebLogic Query: (= name $name)
"www.ejbgrpx": Finder Expressions: ()
"www.ejbgrpx": Could not parse WLQL expression: (= name $name) null
"www.ejbgrpx": ERROR: ejbc found errors
thank you

The finder methods that you are referring to are only simple finder methods. If you would like to add specialized finder methods, you can make your entity bean with bean managed persistence and not container managed. If you are using EJB 2.0, your entity bean with container managed persistence can use EJB QL for finder methods. You can search for this topic and/or download the EJB 2.0 specifications
Hope this helps

Finder-method in orion-ejb-jar.xml

Hi,
Is there a way to let jdeveloper 9.0.3 preview to automatically generate finder-method descriptors for us? When I was developing a cmp-based entity bean, although I defined the ejb-ql in ejb-jar.xml, JDeveloper still just generated the first orion-ejb-jar.xml shown below. In the first orion-ejb-jar.xml, there is no definition for any finder-method. I have to manually add my own definition to it, which is shown in the second orion-ejb-jar.xml. I know that the oc4j container will generate the finder-method after deployment, but in some situation it generated incorrect finder-method descriptors. One of such situation is the between query like "between ?1 and ?2". Anyway, if JDeveloper can generate the finder-method during development, then we can know whether the descriptor is correct or not before deployment, and we can make modifications before deploying it to oc4j server.
<?xml version = '1.0' encoding = 'windows-1252'?>
<!DOCTYPE orion-ejb-jar PUBLIC "-//Evermind//DTD Enterprise JavaBeans 1.1 runtime//EN" " " target="_new">http://xmlns.oracle.com/ias/dtds/orion-ejb-jar.dtd"> <orion-ejb-jar>
<enterprise-beans>
<entity-deployment name="BooksBean" data-source="jdbc/bookDS" table="BOOKS">
<primkey-mapping>
<cmp-field-mapping>
<fields>
<cmp-field-mapping name="isbn" persistence-name="ISBN" persistence-type="NUMBER(10)"/>
</fields>
</cmp-field-mapping>
</primkey-mapping>
<cmp-field-mapping name="isbn" persistence-name="ISBN" persistence-type="NUMBER(10)"/>
<cmp-field-mapping name="title" persistence-name="TITLE" persistence-type="VARCHAR2(50)"/>
<cmp-field-mapping name="author" persistence-name="AUTHOR" persistence-type="VARCHAR2(50)"/>
<cmp-field-mapping name="price" persistence-name="PRICE" persistence-type="NUMBER(6,2)"/>
</entity-deployment>
</enterprise-beans>
<assembly-descriptor>
<default-method-access>
<security-role-mapping name="<default-ejb-caller-role>" impliesAll="true"/>
</default-method-access>
</assembly-descriptor>
</orion-ejb-jar>
<?xml version = '1.0' encoding = 'windows-1252'?>
<!DOCTYPE orion-ejb-jar PUBLIC "-//Evermind//DTD Enterprise JavaBeans 1.1 runtime//EN" " " target="_new">http://xmlns.oracle.com/ias/dtds/orion-ejb-jar.dtd"> <orion-ejb-jar>
<enterprise-beans>
<entity-deployment name="BooksBean" data-source="jdbc/bookDS" table="BOOKS">
<primkey-mapping>
<cmp-field-mapping name="isbn" persistence-name="ISBN" persistence-type="NUMBER(10)"/>
</primkey-mapping>
<cmp-field-mapping name="isbn" persistence-name="ISBN" persistence-type="NUMBER(10)"/>
<cmp-field-mapping name="title" persistence-name="TITLE" persistence-type="VARCHAR2(50)"/>
<cmp-field-mapping name="author" persistence-name="AUTHOR" persistence-type="VARCHAR2(50)"/>
<cmp-field-mapping name="price" persistence-name="PRICE" persistence-type="NUMBER(6,2)"/>
<finder-method query="select * from books where $author like $1">
<method>
<ejb-name>BooksBean</ejb-name>
<method-name>findByAuthor</method-name>
<method-params>
<method-param>java.lang.String</method-param>
</method-params>
</method>
</finder-method>
<finder-method query="select * from books where $title like $1">
<method>
<ejb-name>BooksBean</ejb-name>
<method-name>findByTitle</method-name>
<method-params>
<method-param>java.lang.String</method-param>
</method-params>
</method>
</finder-method>
<finder-method query="$price between $1 and $2">
<method>
<ejb-name>BooksBean</ejb-name>
<method-name>findByPriceRange</method-name>
<method-params>
<method-param>double</method-param>
<method-param>double</method-param>
</method-params>
</method>
</finder-method>
</entity-deployment>
</enterprise-beans>
<assembly-descriptor>
<default-method-access>
<security-role-mapping impliesAll="true" name="<default-ejb-caller-role>"/>
</default-method-access>
</assembly-descriptor>
</orion-ejb-jar>
Any one has any idea?
Thanks,
Jingzhi

Jingzhi -- If you define the correct EJB-QL you should get the correct SQL generated for the finder. If that's not happening can you verify it against the OC4J v903 production release and see if it is still happening. I don't know if this helps with the JDeveloper problem specifically but if you don't need to create your own finders then that I hope should help.
Thanks -- Jeff

EJB CMP finder methods

The Oracle documents suggests that the following definition in the EJBHome is enough to create a finder method
public Enumeration findByWhere(String where) throws RemoteException, FinderException;
I get a java.lang.AbstractMethodError on the client when I try to call this - suggesting the the container is not implementing the method for me.
I see no place in the oracle descriptor to define these finder methods.
What is the deal with these ? How does one use CMP and Finder methods other than the standard "findByPrimaryKey(....)
thanks
null

Hello,
Let say you don't want to uyse the defualt finder methods, then you can write your own like:
(in client servlet/JSP file etc..)
emps = home.findByLast_name(request.getParameter("searchText")); //find by last name
where:
step 1) go to EJB class editor (under your main EJB directory)
step 2) click on finder tab and click add, to add new finder methods
step 3) (you can click help now to get more info on this..anyways) findBy<CMB field>
would automatically check the "Managed by OC4j" check box, this means that you have matched a signature tag for finders (kind of like setXX and getXX if you are doing JavaBean...automatically done for you)
step 4) else you can make one that is not up like findWildCard(String wildCard):
i)by specifying the Method name to be: findWildCard
ii)parameter (String type: wildCard)
step 5) rebuild the EJB directory after you add this method
step 6) use it in any of you client servlet/JSP as you would with the defualt findAll() methods etc..
cheers,
-Long
[email protected]

CMP Entity Bean with ejb-ql finder methods and INFORMIX database

Hi,
I have some CMP Entity Beans with finder methods defined in ejb-ql. In my ejb-jar, within <entity> definitions I have something like:
    <entity>
      <abstract-schema-name>BeanName</abstract-schema-name>
      <cmp-field><field-name>fieldOne</field-name></cmp-field>
      <cmp-field><field-name>fieldTwo</field-name></cmp-field>
      <query>
        <query-method>
          <method-name>findAll</method-name>
          <method-params></method-params>
        </query-method>
        <ejb-ql>SELECT OBJECT(o) FROM BeanName o</ejb-ql>
      </query>
    <entity>
And in persistent.xml:
<db-properties>
     <data-source-name>datasource_name</data-source-name>
</db-properties>
<entity-bean>
     <ejb-name>BeanName</ejb-name>
     <table-name>table_name</table-name>
     <field-map key-type="NoKey">
     <field-name>fieldOne</field-name>
     <column><column-name>column_one</column-name></column>
      </field-map>
     <field-map key-type="NoKey">
     <field-name>fieldTwo</field-name>
     <column><column-name>column_two</column-name></column>
      </field-map>
      <finder-descriptor>
          <method-name>findAll</method-name>
          <method-params/>
     </finder-descriptor>
Once deployed, on server side, I can found a java source file (with corresponding compiled class file) in path:
j2ee/cluster/server0/apps/companyName/MyEARApp/EJBContainer/temp/temp38837373733/route/to/package/
with names:
BeanName0_0pm.java
BeanName0_0PM.class
and the generated java file contains this code:
public java.util.Enumeration ejbFindAll() throws javax.ejb.FinderException, javax.ejb.EJBException {
    TransactionContext tc = pm.getTransactionContext();
    Connection conn = null;
    PreparedStatement pSt = null;
    ResultSet ejb_rs = null;
    int status = javax.transaction.xa.XAResource.TMSUCCESS;
    try {
      conn = pm.getConnectionForFindMethod();
      pSt = conn.prepareStatement("SELECT \"O\".\"COLUMN_ONE\",\"O\".\"COLUMN_TWO\", FROM \"TABLE_NAME\" \"O\"");
      ejb_rs = pSt.executeQuery();
I'm trying to call this method but it throws a SQLException when preparing the statement.
It seems that Informix does not like this SQL syntax because of upper case names, doble quotes on table alias, or something else.
When editing persistent.xml in netweaver, I can define the element <datasource-vendor> as ORACLE, SAPDB, MS_SQL_SERVER, DB2_UDB_AS400 or DB2_UDB_OS390 but INFORMIX is not an accepted value.
Is there any way to define how this SQL query is build?
Thanks in advance.

The return type of the finder method defined in the remote home interface is either the entity bean's remote interface or a collection of objects implementing the entity bean's remote interface. The return type of the finder method defined in the local home interface is either the entity bean's local interface or a collection of objects implementing the entity bean's local interface

Custom finder methods

I'm tring to deploy an Entity bean (CMP) with custom finder method that gets a parameter.
I encountered two problems :
1) defining the query in the deployment descriptor coased the app server to generate the a query without the where cloase - this was fixed by changing manualy the orion-ejb-jar.xml in the application-deployments directory.
2)the second, and yet unresolved problem, is that OC4J doesn't bind the parameter that the query uses during runtime. I'm recieving an ORA msg that claims that not all the parameters are binded.

see sample code
http://otn.oracle.com/sample_code/tech/java/oc4j/htdocs/oc4jsamplecode/oc4j-demo-ejb.html
also there should be a section in our documentation about cmp custom finder methods. oc4j attempts to generate custome finder methods based on home interface
<finder-method query="$empNo = $1">
<method>
                         <ejb-name>EmployeeBean</ejb-name>
                         <method-name>findByEmpNo</method-name>
                         <method-params>
                              <method-param>java.lang.Integer</method-param>
                         </method-params>
                    </method>
               </finder-method>

How to implement find methods in CMP?

As OC4J does not support EJB-QL, we need to implement the find methods by ourselves. But how? Here is my thought.
1) Still declare the find methods in EJB home, such as
public Collection findBySponsor(String sponsorGuid);
2) Do not add query part to ejb-jar.xml file;
3) In the bean class, implement the find method using JDBC code.
Does CMP allows explicit-implementation of finder methds?
Does CMP allows explicit-call to JDBC code?
Thanks,

Henry -- Why go to that trouble? For the near term I would suggest that you just modify the generated
orion-ejb-jar.xml descriptors which will include tags to allow you to either 1) enter a partial criteria or
2) enter a complete SQL statement. This is much less work and when EJB-QL is available with the product,
then you have to only add the EJB-QL to the ejb-jar.xml.
Thanks -- Jeff

IN expression in finder method

is it possible to define a CMP bean to include a custom finder method to retrieve records that satisfy an IN expression, like in:
SELECT * FROM CUSTOMERS WHERE IDCUST IN( $1 )
If so? How should I code the finder method in orion-ejb-jar.xml?
I am using EJB 1.1 under OC4J 9.0.2.1 and JDev 9.0.2
Thanks,
Fedro

You have a solution replacing LIKE with LOCATE function
LOCATE return the current position into string of ocurrence or substring
For
locate('AN','BANDERA')
Return 1
Example:
...where (?1, e.description) > 0
Good luck!!

Error in finder method wrapper resulting in a connection leak

we ar using OC4J 1.0.2.2.1 and dicowered some problems with connection leaking.
The same was reproducable on 9.0.2.1 and 9.0.3 (the "J2EE 1.3 certified" version).
Using CMP/CMT for Entity EJB.
If we define the transaction attribute for a finder method returning single object as NotSupported
and ObjectNotFound exception is thrown as a result of call to the finder method,
connection is not closed.
With emulated datasource this results in a connection pool overflow, with XA datasource
the console gets conenction not closed exceptions but at least connections are closed (seriously influencin performance while waiuting for connection timeout).
the same code executes with no problem on JBoss 2.4.x and 3.0 and on iPlanet.
any comments on this - is this a bug or feature ?

Please log a TAR with your support repesentative so that we can drill down on this issue. As described, this does not sound like the correct behavior but until the details are examined it is hard to tell.
Thanks -- Jeff

CMP Custom Finder Method Problem

Hi everybody,
I have a problem about CMP Custom Finder Method.
I made CMP Entity Bean and deployed.
Then, I updated finder section in orion-ejb-jar.xml to add my custom finder query.
Here is updating finder section in my orion-ejb-jar.xml.
<finder-method query="(($schStartDate <= TO_DATE($1,'MM-DD-YYYY a HH:MI') and $schEndDate >= TO_DATE($1,'MM-DD-YYYY a HH:MI')) or ($schStartDate <= TO_DATE($2,'MM-DD-YYYY a HH:MI') and $schEndDate >= TO_DATE($2,'MM-DD-YYYY a HH:MI'))) and ($schRoom = $3)">

<method>
<ejb-name>RoomSchedule</ejb-name>
<method-name>findBySchDateAndRoom</method-name>
<method-params>
<method-param>java.lang.String</method-param>
<method-param>java.lang.String</method-param>
<method-param>java.lang.String</method-param>
</method-params>
</method>
</finder-method>
<resource-ref-mapping name="jdbc/OracleDS" />
And, i restarted oc4j. so, oc4j redepoyed CMP bean.
But, when my client program called CMP Bean, lookup() was ok, but calling findBySchDateAndRoom() was bad.
I couldn't get any result collection.
Here is my client code.
Context ctx = new InitialContext();
Object ref = ctx.lookup("RoomSchedule");
roomScheduleHome = (RoomScheduleHome) PortableRemoteObject.narrow(ref, RoomScheduleHome.class);
String startDT = new String("07-30-2002 am 10:30");
String endDT = new String("07-30-2002 pm 05:20);
String roomID = "TEST";
Collection roomAllSch = roomScheduleHome.findBySchDateAndRoom(startDT, endDT, roomID1);
Iterator roomSchItr = roomAllSch.iterator();
int schQty = 0;
while (roomSchItr.hasNext()) {
roomSchedule = (RoomSchedule) roomSchItr.next();
if(roomSchedule.getStatus().equals("A"))
schQty++;
After excuting above code, schQty was still zero!!
Because Collection roomAllSch had not any items.
But, table ROOMSCHEDULE had 30 records which were same query condition in my database.
I traced SQL statement using P6Spy Class.
Here is spy.log.
1028006337814|10|0|statement|select * from RoomSchedule where ((RoomSchedule.schStartDate <= TO_DATE(?,'MM-DD-YYYY A.M. HH:MI') and RoomSchedule.schEndDate >= TO_DATE(?,'MM-DD-YYYY A.M. HH:MI')) or (RoomSchedule.schStartDate <= TO_DATE(?,'MM-DD-YYYY A.M. HH:MI') and RoomSchedule.schEndDate >= TO_DATE(?,'MM-DD-YYYY A.M. HH:MI'))) and (RoomSchedule.schRoom = ?)|select * from RoomSchedule where ((RoomSchedule.schStartDate <= TO_DATE('7-30-2002 ?@@| 01:00','MM-DD-YYYY A.M. HH:MI') and RoomSchedule.schEndDate >= TO_DATE('7-30-2002 ?@@| 01:00','MM-DD-YYYY A.M. HH:MI')) or (RoomSchedule.schStartDate <= TO_DATE('7-30-2002 ?@HD 12:00','MM-DD-YYYY A.M. HH:MI') and RoomSchedule.schEndDate >= TO_DATE('7-30-2002 ?@HD 12:00','MM-DD-YYYY A.M. HH:MI'))) and (RoomSchedule.schRoom = 'Earth')
1028006337824|10|0|statement|select RoomSchedule.schTitle, RoomSchedule.schStartDate, RoomSchedule.schEndDate, RoomSchedule.schDayAll, RoomSchedule.status, RoomSchedule.schRoom, RoomSchedule.reqUser, RoomSchedule.apprUser, RoomSchedule.purpose, RoomSchedule.relatoinID, RoomSchedule.schDesc, RoomSchedule.reqDate, RoomSchedule.apprDate from RoomSchedule where (RoomSchedule.schID = ?)|select RoomSchedule.schTitle, RoomSchedule.schStartDate, RoomSchedule.schEndDate, RoomSchedule.schDayAll, RoomSchedule.status, RoomSchedule.schRoom, RoomSchedule.reqUser, RoomSchedule.apprUser, RoomSchedule.purpose, RoomSchedule.relatoinID, RoomSchedule.schDesc, RoomSchedule.reqDate, RoomSchedule.apprDate from RoomSchedule where (RoomSchedule.schID = 0)
As you see it, two query statement were executed.
First query statement was ok and got some result records.
But, second query statement was bad so didn't get any result records.
I didn't understand why second query statement was executed.
When roomAllSch.iterator() was being excuted in my client program, second query statment was executed.
I couldn't believe....
What's wrong? Please help me....
OC4J : Version 9 Release 2
Database : Oracle 8i
OS : Windows 2000 Professional

I created CMP of EJB 1.1, I wanted to add a finder
there, but it didn't work.
the error message is:
"AccountEJB_vkbo0d_HomeImpl.java":
AccountEJB_vkbo0d_HomeImpl should be declared
abstract; it does not define findBySalary(float) in
AccountEJB_vkbo0d_HomeImpl at line 11, column 1I think I don't remember CMPs having finder methods anything other than abstract. The code goes in the deployment descriptor. I hope you atleast got that right.
Richard.

Find method with dates

Hellow ,
I want to create a find-method that should represent following statement :
select * from emp where date > to_date( '24/01/2002', 'dd/MM/yyyy' );
I defined in my EJB-home-method something like this ...
public Collection findByStukEname( String date ) throws RemoteException, FinderException;
Then I deployed to a J2ee-server ...
and in the orion-ejb-jar.xml I changed the finder-method into ...
<finder-method query="select * from emp where date > to_date( $1 , 'dd/MM/yyyy' )" partial="false">
<method>
<ejb-name>EMP</ejb-name>
<method-name>findByStukEname</method-name>
<method-params>
<method-param>java.lang.String</method-param>
</method>
</finder-method>
But i doesn't work ? Did I make a mistake ?? Is there a beter way to do it ?? ( maybe working with java.util.Date ?? )
Greetz
Steven

Hi Steven,
OC4J uses an instance of java.sql.PreparedStatement to execute your
"finder" method. Now you have defined a member of your bean class that will be inserted into your query string in place of the "$1".
I'm guessing that this member is an instance of "Date" (either
java.util.Date or java.sql.Date). If that is the case, then you need
to change your query string to
select * from emp where date > $1
Also, you may not be aware of this, but I always use java.sql.Timestamp
when mapping EJB members to DATE columns in the Oracle database tables.
(Not java.sql.Date)
Hope this helps,
Avi.

Does CMP bean finder method supports "LIKE" sql?

I put something like this in the orion-ejb-jar.xml file:
<finder-method partial="false" query="select * from EMP where $ename like $1 AND $job like $2">
</finder-method>
If I put in exact value like 'ADAMS' or 'CLERK', it works fine. But if I put in 'A%' or 'CL%', it does not work. I know the record is there and the same sql does return a row in sql-plus.
Appreciate any help.
Adam

I put something like this in the orion-ejb-jar.xml file:
<finder-method partial="false" query="select * from EMP where $ename like $1 AND $job like $2">
</finder-method>
If I put in exact value like 'ADAMS' or 'CLERK', it works fine. But if I put in 'A%' or 'CL%', it does not work. I know the record is there and the same sql does return a row in sql-plus.
Appreciate any help.
Adam gday Adam -
I don't think there is anything in the persistence manager that will prevent this from working as you want.
Can I ask what version of OC4J you are using?
I'm not sure from your email if you are you specifying the fields in the finder method by surrounding them with SQL style quotes as in 'A%'? You shouldn't need to do that if you are.
I just tested it out with a simple client and entity bean based on the employee table, which I created in about 30 seconds with the new JDeveloper CMP Entity Bean Wizard, using the create from existing table option.
I added a finder method that looks like the following:
Collection findByEnameAndJob(String ename, String job) throws RemoteException, FinderException;
And then changed the SQL in the finder dialog (or orion-ejb-jar.xml) for the finder to be
<finder-method partial="False" query="select * from emp where $ename like $1 and $job like $2">
<method>
<ejb-name>Emp</ejb-name>
<method-name>findByEnameAndJob</method-name>
<method-params>
<method-param>java.lang.String</method-param>
<method-param>java.lang.String</method-param>
</method-params>
</method>
</finder-method>
The client code then looked for employees with a name starting with the letter A and whose job started with the letters CL as follows:
Collection coll = empHome.findByEnameAndJob("A%","CL%");
System.out.println("*** There were : " + coll.size() + " records returned ***");
Iterator iter = coll.iterator();
while (iter.hasNext())
emp = (Emp)iter.next();
System.out.println("empno = " + emp.getEmpno());
System.out.println("ename = " + emp.getEname());
When the client was run, this was the resulting output:
*** There were : 1 records returned ***
empno = 7876
ename = ADAMS
job = CLERK
mgr = 7788
hiredate = 1987-05-23 00:00:00.0
sal = 1100
comm = 0
deptno = 20
If you want to find all the entries that have a job that starts with CL you can even use the same finder method like:
Collection coll = empHome.findByEnameAndJob("%","CL%");
This results in the output
*** There were : 4 records returned ***
empno = 7369
ename = SMITH
job = CLERK
mgr = 7902
hiredate = 1980-12-17 00:00:00.0
sal = 800
comm = 0
deptno = 20
empno = 7876
ename = ADAMS
job = CLERK
mgr = 7788
hiredate = 1987-05-23 00:00:00.0
sal = 1100
comm = 0
deptno = 20
empno = 7900
ename = JAMES
job = CLERK
mgr = 7698
hiredate = 1981-12-03 00:00:00.0
sal = 950
comm = 0
deptno = 30
empno = 7934
ename = MILLER
job = CLERK
mgr = 7782
hiredate = 1982-01-23 00:00:00.0
sal = 1300
comm = 0
deptno = 10
I can send you the packaged EAR file if you want to try this simple example for yourself - or you I would even encourage you to grab JDeveloper 9i and see how it easy it makes it to build and test the example I was just working with.
cheers!
-steve

OC4J: EJB FREEZING IN FINDER METHOD

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