FindByKey with Composit Primary key

Hi
View Object based on Entity Object. Database table defined with Composit Primary Key.
I have to query ViewObject using findByKey().
Can any one help me how to use findByKey() using a composit primary key in ADF 11g.
Thanks

Hi,
this is covered in the developer guide here:
38.1.7 Understanding When You Can Use Partial Keys with findByKey()
http://download.oracle.com/docs/cd/E12839_01/web.1111/b31974/bcadvvo.htm#ADFFD1189
The key thing is to have your object types casted correctly or else null for your composite key.
Brenden

Similar Messages

FindByKey with tow primary keys

I am using findByKey in a table with two primary keys. It works fine if I use only one key in the ViewObject, using either of the two keys, but I need to use both keys, but search on the value of only one of them.
I read I could pass null as the value of the other key, to consider all the values on it, but it doesn't work.
Both keys are String.�Any suggestions?
Thank you.

Victoria:
Please run your test case with diagnostic turned on. It will show the SQL statement used for your findByKey() request. See if the SQL makes sense. If still doesn't work and if you cannot figure out what's going on, please post the diagnostic output.
To turn on diagnostic, you need to specify
-Djbo.debugoutput=console
as one of the JVM switches.
If you're invoking your app (middle-tier app) from command line,
include -Djbo.debugoutput=console as in
java.exe -Djbo.debugoutput=console ...
If you're running your app from within JDev:
1. Select the project.
2. Do right mouse click and select "Project Settings..."
3. On the Settings dialog, select Configurations/Runner.
4. In the righthand side pane, you should see a textbox for "Java
Options". Please add the following JVM switch:
-Djbo.debugoutput=console
Then, rerun. The run command should include
-Djbo.debugoutput=console as in
"D:\JDev9i\jdk\bin\javaw.exe" -Djbo.debugoutput=console -classpath ...
You should now see a lot more output on the IDE's message window.
Thanks.
Sung

Duplicate record with same primary key in Fact table

Hi all,
Can the fact table have duplicate record with same primary key . When i checked a cube i could see records with same primary key combination but the key figure values are different. My cube has 6 dimentions (Including Time,Unit and DP) and 2 key figures. So 6 fields combined to form the composite primary key of the fact table. When i checked the records in se16 i could see duplicate records with same primary key. Ther are no parallel loading happening for the cube.
BW system version is 3.1
Data base is : Oracle 10.2
I am not sure how is this possible.
Regards,
PM

Hi Krish,
I checked the datapacket dimention also. Both the record have same dimention id (141). Except the Keyfigure value there is no other change in the Fact table record. I know this is against the basic DBMS primary key rule. But i have records like this in the cube.
Can this situation arise when same records is there in different data packet of same request.
Thx,
PM
null

Insert values of form on a table with compound primary keys in APEX

Good evening,
I have a table with compoud primay keys. On ER model I had a many to many relation and when I coverted to relational model I've got a table with the primary keys of the two entities.
My problem now is that I am trying to build an APEX application with a Form/Report and I want to insert a tuple both on the "entity" and on the table with two primary keys.
I created a trigger with
CREATE OR REPLACE TRIGGER ins_key_elem
INSTEAD OF INSERT
ON v_key_elem
REFERENCING NEW AS NEW
FOR EACH ROW
BEGIN
INSERT INTO elem_type (elem_key, type_key)
VALUES (:NEW.elem_key, :NEW.type_key);
INSERT INTO elem(elem_key, name)
VALUES (:NEW.elem_key, :NEW.name);
END;
Is that ok? If it is, now how I can use that trigger to do what I need? i.e. insert the tuple on the two tables when I use the create button of the form
Edited by: 934530 on May 15, 2012 2:36 PM

Nevermind...figured it out. Was able to set the value on the Report Attributes page.

Updating a table with no Primary key

What I am trying to find out is if you can uniquely update a single record in a table that has no primary key. I see no way to reference the record I want, other than specifying all the field values in a where clause. This is a problem though, because if I have another record with the same field values, that will get updated too. (I know its a bad database design, but some people do it and I need to work around it!!!), there are some situations where you would have identical records as far as a where clause is concerned, for example, you cant use a blob in a where clause so that might be where your records differ...
In SQLServer 2000, Enterprise manager throws an error if you have a table with no primary key and duplicate records that you try to update through the GUI. EM uses stored procedures to execute updates, and it rolls back ones which result in more than one update result.
Im not too familiar with Cursors in SQL, only that they are quite slow and not implemented on all DB products. But I think that they might be able to solve the problem (but I dont logically see how).
Can anybody explain this to me?

another record with the same field valuesIf you have two records and all the field values are the same then the records are logically the same anyways, so it shouldn't matter if you update both (one would question why there are two records in the first place.) In other words there is no way, either computationally or manually to tell them apart.
I suspect that that is rather rare. Instead what is more likely is that you are only using some of the fields. So just keep adding fields until it is unique.

DBMS_CDC find only the columns that are changed along with the primary key in the table

Hello,
We are having a requirement to find the change data in the production environment.
We are planning to use the DBMS_CDC utility.
But for example in the create change table 1 picked emp_id,ename, address, salary,dob.
I have a sample data of
empid
ename
address
salary
DOB
1
test1
24 test street
2000
20-Jan-98
2
test2
25 test street
2500
15-Aug-97
if ename for empid 1 is changed to test1_test3 from test1.
My CDC is capturing the values in the old and new values in the 5 columns.
But i need to get only the empid (primary key of the source table) and the ename column as only that's been updated not the rest of the 3 columns.
Can i accomplish this.
Please advice.

Hello,
Thanks for the information.
but if i change the change table then i will miss the other columns right?
I want to get the columns( empid and ename) only if ename is changed. i.e when ever any column in emp table changes i need to get all the columns where the data is changed along with the primary key columns empid.
Is there any way i can tweak the parameters so that i can achieve this or is there any other way using the cdc i can get this data.
Thanks

2 tables with same primary key

Hi,
2 tables with same primary key is possible,but when is wise to go for such ?
is that a bad desisn ?
eg:
Personal_details_employee
Official_details_employee
these 2 tables have same Primary key emp_id.
plz. reply me at [email protected] also
thanx
vikram

hi Vikram,
In this case u can have then in one table itself and why do want to have two tables.
- Suresh.A

How to Work with Composite Primary Key

Hi All,
I'm working with Toplink JPA. Here I have A problem with inserting into database table which have composite Primary Key.
What I'm doing is, I have two tables. to maintain many to many relation between these two tables I created another intermediate table which consists of foreign Keys (reference) of above two tables.
Now these two foreign Keys in the Intermediate table made as composite Primary Keys.
When I'm trying to the data in the Intermediate table I'm getting the foreign Keys values are null..
could anyone suggest me how to work with composite Primary Keys
Thanks,
Satish

I have the same problem, I have 3 tables with a join table joining them all. I have created an intermediate table entity. When I go to create a an entry, it says that I cannot enter null into "ID". Here is the SQl toplink generates:
INSERT INTO Z_AUTH_USER_AUTHORIZATION (CONTEXT_ID, AUTHORIZATION_ID, USER_ID) VALUES (?, ?, ?)
bind => [null, null, null]
Here are the classes:
-----------------------Join Table-----------------------------------------------
@Entity()
@Table(name = "Z_AUTH_USER_AUTHORIZATION")
public class AuthUserAuthorization implements Serializable{
@EmbeddedId
private AuthUserAuthorizationPK compId;
// bi-directional many-to-one association to AuthAuthorization
@ManyToOne(fetch = FetchType.EAGER)
@JoinColumn(name = "AUTHORIZATION_ID", referencedColumnName = "ID", nullable = false, insertable = false, updatable = false)
private AuthAuthorization authAuthorization;
// bi-directional many-to-one association to AuthContext
@ManyToOne(fetch = FetchType.EAGER)
@JoinColumn(name = "CONTEXT_ID", referencedColumnName = "ID", nullable = false, insertable = false, updatable = false)
private AuthContext authContext;
// bi-directional many-to-one association to AuthUser
@ManyToOne(fetch = FetchType.EAGER)
@JoinColumn(name = "USER_ID", referencedColumnName = "ID", nullable = false, insertable = false, updatable = false)
private AuthUser authUser;
---------------------------------------User table--------------------------------------------------------------
@Entity()
@Table(name = "Z_AUTH_USER")
public class AuthUser implements Serializable, IUser{
@Id()
@SequenceGenerator(name = "AUTH_USER_ID_SEQ", sequenceName = "Z_AUTH_USER_ID_SEQ")
@GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "AUTH_USER_ID_SEQ")
@Column(name = "ID", unique = true, nullable = false, precision = 10)
private Integer id;
// bi-directional many-to-one association to AuthUserAuthorization
@OneToMany(mappedBy = "authUser", fetch = FetchType.EAGER)
private java.util.Set<AuthUserAuthorization> authUserAuthorizations;
-----------------------------------Context table-----------------------------------------------------------------
@Entity()
@Table(name = "Z_AUTH_CONTEXT")
public class AuthContext implements Serializable, IContext{
@Id()
@SequenceGenerator(name = "AUTH_CONTEXT_ID_SEQ", sequenceName = "Z_AUTH_CONTEXT_ID_SEQ")
@GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "AUTH_CONTEXT_ID_SEQ")
@Column(name = "ID", unique = true, nullable = false, precision = 8)
private Integer id;
// bi-directional many-to-one association to AuthUserAuthorization
@OneToMany(mappedBy = "authContext", fetch = FetchType.EAGER)
private java.util.Set<AuthUserAuthorization> authUserAuthorizations;
----------------------------Authorization table-------------------------------------------------
@Entity()
@Table(name = "Z_AUTH_AUTHORIZATION")
public class AuthAuthorization implements Serializable, IAuthorization{
@Id()
@SequenceGenerator(name = "AUTH_AUTHORIZATION_ID_SEQ", sequenceName = "Z_AUTH_AUTHORIZATION_ID_SEQ")
@GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "AUTH_AUTHORIZATION_ID_SEQ")
@Column(name = "ID", unique = true, nullable = false, precision = 8)
private Integer id;
// bi-directional many-to-one association to AuthUserAuthorization
@OneToMany(mappedBy = "authAuthorization", fetch = FetchType.EAGER)
private java.util.Set<AuthUserAuthorization> authUserAuthorizations;
I have tried to create the new entity several ways. I have tried to create one with the default constructor then set this entity on each of the other entities, I have also tried to pass in the entities to the join entity and set them there, but this doesn't work. Any help would be very appreciated!
Thanks,
Bill

Mapping tables with no primary key defined

Hi!
I was just wondering if it's possible to map a table with no primary key? The reason why is that I have a logging table that I want to access, which is built very simple and the only useful filtering criteria that I'll be using there is a date column.
Regards,
Bjorn Boe

TopLink requires that an object have a primary key to determine identity, perform caching, and database updates and deletes. It is best to define a primary key in all your objects; a sequence number can be used if the object has no natural primary key. The primary key does not have to be defined on the database, as long as a set of fields in the table are unique you can define them to be the primary key in your TopLink descriptor.
If your table truly has no primary key, nor unique set of fields, it is still possible to map the table with some restrictions. If you disable caching, and mark the object as read-only, and never update or delete the object, you can map it for read-only purposes.
You will need to do the following:
- Set any field as the primary key to avoid the validation warning.
- Set the cache type to NoIdentityMap.
- Set the descriptor to be read-only.

Problem with Sting Primary Key

I have probleme with Sting Primary Key
when i create new row
System.out.println("is new:" + acct.getEntityState());
show 1 - this row is not new
why?

Hi,
I was unable to reproduce this behavior on OWM 10.1.0.8. It appears that you have a SR open for this issue, so I would suggest to continue with that process.
Regards,
Ben

Problem with varchar2 primary key..

OWM version 10.1.0.8
When I am trying to add a column in a version enable table with varchar2 primary key, it fails.
If primary key is numeric it works.
See below the test case.
-- CASE 1. When primary key is number.
SQL> create table wmtab
( wmtab_id number,
price number,
title varchar2(80),
AUTHOR VARCHAR2(10)
Table created.
SQL> ALTER TABLE wmtab add (CONSTRAINT PK_kontakt PRIMARY KEY (wmtab_id));
Table altered.
SQL> EXECUTE DBMS_WM.EnableVersioning('WMTAB');
PL/SQL procedure successfully completed.
SQL> CALL DBMS_WM.BEGINDDL('WMTAB');
Call completed.
SQL> ALTER TABLE wmtab_lts add ( FREIGEGEBEN varchar2(1));
Table altered.
SQL> CALL DBMS_WM.commitDDL('WMTAB');
Call completed.
-- CASE 2. When primary key is varchar2.
SQL> create table wmtab
(wmtab_id varchar2(10) constraint wmtab_pk primary key,
price number,
title varchar2(80),
AUTHOR VARCHAR2(10)
Table created.
SQL> EXECUTE DBMS_WM.EnableVersioning('WMTAB');
PL/SQL procedure successfully completed.
SQL> CALL DBMS_WM.BEGINDDL('WMTAB');
Call completed.
SQL> ALTER TABLE wmtab_lts add ( FREIGEGEBEN varchar2(1));
Table altered.
SQL> call DBMS_WM.CommitDDL('wmtab');
call DBMS_WM.CommitDDL('wmtab')
ERROR at line 1:
ORA-20199: primary key columns cannot be added/dropped/modified/reordered for
version enabled tables
ORA-06512: at "SYS.OWM_DDL_PKG", line 6196
ORA-06512: at "SYS.LT", line 11930
ORA-06512: at line 1
Same problem is reprosucible on OWM 10.2.0.1.
But its working fine with varchar2 primary key On OWM 10.2.0.4.2/3
Is there any workaround or we can get patch for 10.1.x.x?

Hi,
I was unable to reproduce this behavior on OWM 10.1.0.8. It appears that you have a SR open for this issue, so I would suggest to continue with that process.
Regards,
Ben

Composit primary key (reverse)

Hi,
I have created a table with composite primary key
eg:-
create table demo(one NUMBER,two NUMBER,primary key pk_composite (one,two);
insert into demo values(1,2);
1 row inserted
insert into demo values(1,2);
ORA-00001: unique constraint (username.PK_composite) violated
its ok...........................
I know composite primary wont work reverse (i.e)
select * from demo;
one | two
1 | 2
insert into demo values(2,1);
1 row inserted
select * from demo;
one | two
1 | 2
2 | 1
I need the reverse to be done is there any possible solution to make it? (i.e)
insert into demo values(2,1); -- this should not be allowed
please help me... thanks in advance...

A quick way to accomplish this is to create a function-based unique index like this:
create unique index demo_i1 on demo
(least(one,two)
,greatest(one,two));

FindByKey() finds only primary keys?

I want to use the findByKey() method to check if a specific value is already in the database. I use the following code snippet to do this:
String Nr = "SearchStringPart1";
AttributeListImpl al = new AttributeListImpl();
al.setAttribute("UniqueKeyPart1",new Number(1));
al.setAttribute("UniqueKeyPart2",Nr);
Key myKey = myViewObject.createKey(al);
Row[] rows = myViewObject.findByKey(myKey,2);If I run this code snippet "rows[]" will be empty, even if the queried data does exist.
UniqueKeyPart1 and UniqueKeyPart2 form together a unique key in the database and they are marked as "Keys" in the Attribute Settings of "myViewObject". However, they are no primary keys.
If I change the code snippet to query the primary key I do get some results:
AttributeListImpl al = new AttributeListImpl();
al.setAttribute("PrimaryKey",new Number(13));
Key myKey = myViewObject.createKey(al);
Row[] rows = myViewObject.findByKey(myKey,2);Question:
Is it possible, that "findByKey" can only find primary keys? This is not documented in the documentation.

I try to keep away as far as possible the column names of the database from the clients.
Unfortunately my column names are somewhat cryptic whereas the attribute names are readable. So if I write a where clause I have to use the cryptic names instead of the readable names which I hoped to be able to use with findByKey().
So the difference is "WHERE CRYPTIC_COLUM_NAME = 123" to "findByKey(RevisionKey, 123)".
However, I expect, that I'll not be able to hide the column names completely from the clients :-(You can hide the names if you use ViewCritiera rather then setup the where clause directly. See oracle.jbo.ViewCriteria and
oracle.jbo.ViewObject.applyViewCriteria method
If that's true, then when you set the VO key attribute for UniqueKeyPart1 and
UniqueKeyPart2, the ViewObject key is a combination of
PrimaryKey+UniqueKeyPart1+UniqueKeyPart2. That's surprising.
PrimaryKey alway delivers one Row as the primary key is always unique. So what is the sense of appending other attributes checked as "Key Attributes" to the primary key. You will never get more than the one result specified by the primary key.
Obviosly I didn't understand the purpose of the "Key Attribute" checkbox in the view object wizard. Maybe you can help me?Key attributes on ViewObject is used by the framework for the most part is to uniquely identify one row in that ViewObject.
However, this might be an suggestion for an enhancement. I think, my idea to query different colums than the primary key with findByKey() is not so strange. And I think it should not be too difficult to implement this in one of the future releases.You should be able to use ViewCriteria on the ViewObject and not only provide matching values but use * or % to find a pattern as well.
You can also use other QBE features. See the usage in findMode in JClient forms on how you could use ViewCriteria.
Frank

How do I create an Entity Bean with unknown primary keys

Hi,
Can a good folk help me.
I am mapping an entity bean to an oracle table for the purpose of logging . I do not need a primary key contraint on this table. How do I specify in my entity bean file descriptor not to use any field for primary key ...
I have done this so far...
in my ejb.xml file - I set....
<prim-key-class>java.lang.Object</prim-key-class>
and deleted ....
<primkey-field>...</primkey-field>
My table structure is .....
CREATE TABLE FAMS_REQUEST_LOG (
EDITEDBY VARCHAR2(20),
OLDTRANSDATE DATE,
REQUESTID VARCHAR2(30) NOT NULL,
OLDQTY NUMBER(20),
NEWQTY NUMBER(20),
NEWTRANSDATE DATE)
but I still get this error message on deploying...
[#|2006-03-01T14:30:29.250+0100|INFO|sun-appserver-pe8.1_02|javax.enterprise.system.tools.deployment|_ThreadID=19;|Total Deployment Time: 11000 msec, Total EJB Compiler Module Time: 0 msec, Portion spent EJB Compiling: 0%|#]
[#|2006-03-01T14:30:29.265+0100|SEVERE|sun-appserver-pe8.1_02|javax.enterprise.system.tools.deployment|_ThreadID=19;|Exception occured in J2EEC Phase
com.sun.enterprise.deployment.backend.IASDeploymentException: Fatal Error from EJB Compiler -- JDO74046: JDOCodeGenerator: Caught a MappingConversionException loading or creating mapping model for application 'fixassetenterpriseapp' module 'FixAssetEnterpriseApp-EJBModule': JDO71030: There is no column in table FAMS_REQUEST_LOG which can be used to support the servers implementation of unknown key classes.
at com.sun.ejb.codegen.CmpCompiler.compile(CmpCompiler.java:274)
at com.sun.ejb.codegen.IASEJBC.doCompile(IASEJBC.java:615)
at com.sun.ejb.codegen.IASEJBC.ejbc(IASEJBC.java:563)
at com.sun.enterprise.deployment.backend.EJBCompiler.preDeployApp(EJBCompiler.java:340)
at com.sun.enterprise.deployment.backend.EJBCompiler.compile(EJBCompiler.java:209)
at com.sun.enterprise.deployment.backend.AppDeployer.runEJBC(AppDeployer.java:284)
at com.sun.enterprise.deployment.backend.AppDeployer.deploy(AppDeployer.java:176)
at com.sun.enterprise.deployment.backend.AppDeployer.doRequestFinish(AppDeployer.java:107)
at com.sun.enterprise.deployment.phasing.J2EECPhase.runPhase(J2EECPhase.java:146)
at com.sun.enterprise.deployment.phasing.DeploymentPhase.executePhase(DeploymentPhase.java:71)
at com.sun.enterprise.deployment.phasing.PEDeploymentService.executePhases(PEDeploymentService.java:633)
at com.sun.enterprise.deployment.phasing.PEDeploymentService.deploy(PEDeploymentService.java:188)
at com.sun.enterprise.deployment.phasing.PEDeploymentService.deploy(PEDeploymentService.java:520)
at com.sun.enterprise.management.deploy.DeployThread.deploy(DeployThread.java:143)
at com.sun.enterprise.management.deploy.DeployThread.run(DeployThread.java:172)
|#]
Dotun

you will have to create a sequence and a trigger
CREATE SEQUENCE <SEQUENCE NAME>
INCREMENT BY 1
START WITH 1
NOCACHE
/this sequence will guarantee that each requested number is unique
the trigger will select from this sequence and insert the obtained value in the new record
CREATE OR REPLACE TRIGGER <TRIGGER NAME>
BEFORE INSERT ON <TABLE NAME>
REFERENCING NEW AS NEW OLD AS OLD
FOR EACH ROW
    BEGIN
        select
            <SEQUENCE NAME>.nextval
        into
            :NEW.<COLUMN NAME>
        from
            dual;
    END;
[/CODE]
this will always take the value from the sequence, even if you already provided a value yourself
(otherwise you will first have to test if :NEW.<column name> is null, but I wouldn't do this for a key column.
if you need the generated key back for further processing (inserting it into a child table for example), you can use the returning clause on the insert statement
see the oracle documentation for more information about sequences, triggers and the returning clause
greetings
Freek D
I am new to Oracle and need to know how to create a table that uses an automatic incrementation on a primay key for it's default. I need the uniqueness automatically managed by the DBMS.. This activity is know as setting the Column (primary key with identity) in Ms-SQL..
Your help would be appreciated greatly....
Thanks....

Problem with a primary key when creating a new record in Forms

My table has a field - MDD_KEY - that is a primary key. It is updated from a sequence with a before-insert database trigger. I know this works properly as the primary key was accurately populated when I inserted 1433 records.
In Forms 6, I have a form based on that table. I have set the mdd_key as a hidden field because I assume it will be entered by the before-insert trigger. However, when I enter data into the table, and then try to save it, I get a FRM-40202: Field must be entered. - followed by - FRM-40222: Disabled item MDD_KEY failed validation.
If I set DATA Required to no, when I try to save I get an FRM-40600: Record has already been inserted - but no such record exists in the database. I know this record is unique and does NOT exist because I deliberately made it up.
In the property palatte, the attributes of the field are:
DATA Data Type Number
Required Yes
DATABASE Database Item Yes
Primary Key Yes
Query Only No
Query Allowed Yes
Query Length 0
Insert Allowed Yes
Update Allowed Yes
Update Only if Null No
Lock Record No
I assume that my problem is that with a new record, the form wants to see the MDD_KEY populated before it saves - but that isn't going to happen until the before insert trigger fires in the database. I assume I have to populate that field within forms, but how do I do that without messing up the database trigger/sequence? I will have to load more data directly into the database - so I need the database trigger in place.
I have not used primary keys before so I am more than a little bit confused about how and when it should be populated when a new record is created in Forms.
Any help would be appreciated as I cannot enter new data into my form (works well with existing data).
Thanks
Glenn

hi
if u have any problem using seq then try that statemetn ur block level in ur form
PRE-INSERT trigger
select nvl(max(nvl(srno,0)),0)+1 into :srno from tablename;
Rizwan

FindByKey with Composit Primary key

Similar Messages

Maybe you are looking for