Create Entity class from view

Hello,
Is it possible to use views in java persistence in the same way as tables (but just for fetching data)?
Thanks in advance.

hi,
before doing this first consider the runtime usage of your appln. Will there be 2 separate appln modules that has its own entity objects..?
creating 2 connections doesnt means that your eos will be used together?
best is to make a single connection to a schema that has access to all tables of both the schema, with proper rights. next you create synonyms with proper access name i.e sch-name.tbl-name
or else you can directly create entity object by this pattern. Right click the model project or any package in it and select create new eo from busniess components menu.
Regards,

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Unable to Create Entity Model from existing oracle database

Hi,
I am using Visual Studio 2013, .net framework 4.5, entity framework 5.0 and oracle 11g database.
Issue Description: I need to develop WCF service to exposing the account information which needs to get the data from 20 oracle tables. Trying to create entity model from existing oracle database. first i tried creating just two tables it
was created but it took more than 30 minutes. then i selected remaining few tables it took more than a days but nothing created just showing spinning the wheel. then i tried with fresh project and selected all the tables but same issue nothing created and
also there is no error. during this process i checked database query monitoring there is a big sql statement collection tables metadata. i don't know what was wrong the query taking too much time to complete the process.
we tried multiple machine and different oracle database all are same issue.
Sql server database -looks good no issues.
Any help/tips/ideas welcome to overcome this issue.

Hi Sakthimp,
Welcome to MSDN forum.
Your issue is out of support range of VS General Question forum which mainly discusses the usage of Visual Studio IDE such as
WPF & SL designer, Visual Studio Guidance Automation Toolkit, Developer Documentation and Help System
and Visual Studio Editor.
Because your issue only occurred with oracle database, moreover Oracle developed the Entity Framework for Oracle itself, I suggest that you can consult your issue on Oracle forum/community:
you will get better solution and support there.
Best regards,
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How to access a Java class from view controller?

Hi All,
I have created a Test.java class file from Navigator view under
Src --> Packages --> com.sap.MyProject.
When I try to access the Test class from view controller,
I getting this error "Test cannot be resolved or is not a type".
How do I fix this?
Thanks
Sundar

Hi,
I have created a Test.java class file from Navigator view under
Src --> Packages --> com.sap.MyProject.
After this you can goto the context of your View and define the VA goto the type of VA and click on the right side button and go to java native type and type your java file name click you name .
that means the jave file s assigned to VA.
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Thanks,
Lohi.

EJB 3.0: CMP Entity bean from view

Hi,
I have created an entity bean from a database view.
I don't have a good filed to use as id in my view. So I want to generate the id in my entity bean.
How can I do this ?
Thanks

Hi,
I didn't get your question.
CMP is something, which can be done by hand.
So maybe it is better, to do it manually.
Bea has some workaround, I am sure.
Maybe it is something with deployment descriptors, which
have to be configured to the underlying database.
Sorry for my stupid first answer.
Volker.

Creating Entity within a view

I have a View with two entities, Person and Address. The first has a foreign key identifying the Address entity and the view works fine. The reason for two Entities is that Addresses may be owned by other Entities too.
I want to write a method on the ViewPersonImpl that creates a new EntityAddress and links the PersonEntity to it. This represents a change of address of the Person.
It seems I have to do the following.
1) Create EntityPersonDefImpl.java
2) Write a public createInstance method that just calls EntityDefImpl.createInstance().
3) In ViewPersonImpl.changeAddress(), call this method and set the Person.AddressId attribute to the appropriate value from the returned Entity.
My first question is why I have to go to such lengths (steps 1 & 2) when I expected to only have to do step 3. Put another way, why is EntityDefImpl.createInstance() protected?
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{ System.err.println("Entity not seen " + lNewAddress + ", " + getEntityAddresses());
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Entity not seen Entity [oracle.jbo.Key[2187 ]], Entity [oracle.jbo.Key[2152 ]]
I've discovered that I can execute this code:
setEntity(1, lNewAddress);
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How do I discover an Entity's index?
Tony.

Hi,
A view is just a query stored in Oracle, you cannot have a index on a view, you can create on the table on which the view is based.
thanks

Fastest way to create child class from parent?

As the subject states, what do you folks find is fastest when creating child classes directly from the parent? (esp. when the parent is in a lvlib) I thought I'd post up and ask because the fastest way I've found to get working takes a few steps.
Any suggestions ae appreciatized!
-pat

Thanks for the quick response Ben!
Yea, I apologize, in your response I realize my OP was more than vague haha (it hapens when you get used to your own way of doing things I guess huh)- I'm trying to create a child from a parent so that it has all of the methods that the parent has.
In order to do so I currently have to open and close LV a few times during my current process so that vi's in memory dont get mixed up- Currently I save a copy of the parent class in a sub dir of where it is saved, close out of LV, open the new 'copy of parent.lvclass', save as>>rename 'child class.lvclass', close LV, and open up the project to 'add file', then right click>>properties>>inheritance.
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-pat
p.s. I'm tempted to steal your cell phone sig, hope you dont mind haha good stuff!

How to create 3 Classes from one

Hello,
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suneclipse wrote:
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Trouble on Create Entity Object from AS400/DB2 version 5 rev 4

Hi, hope any1 can help..
I using jt400.jar (com.ibm.as400.access.AS400JDBCDriver) with
jdbc url : jdbc:as400://host
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I had refer other posts, but i might miss out some important piece. Beside, I able to create ViewObject based on sql query. Any1 able to show me some direction..perhaps..thanks

Thanks ...I tried both SQL92 and db2...and tried both Java & Java Extended for Oracle.. too..I able to connect to the dbase, browse thought the db2 schema n tables, even able to create view object with sql query..just stuck in entity object creation..feel weird n cant find much of documentation on the web to describe this behaviour too..

Creating Entity Object from Service Interface - JDeveloper version 11.1.1.3

In our project, we don't intend to have any JDBC connection to a database and want to create all my entity objects using SDO web services deployed in a remote server. I could create an entity object based on a SDO web service deployed in the standalone WL server successfully. But at the time of Development,when I select ADF Business Component --> Entity Object, it always takes to a screen that prompts for a JDBC connection, if you have no connection defined in the project yet. To bypass this, I need to create a valid connection to a local DB and then I can go the next page that prompts me to to choose service interface and asks for a WSDL URL. How do I get around creating a JDBC connection and create a service interface based data source directly?
To get around this issue, I created a connection to a local DB by providing a wrong password to make sure that we don't need a valid db connection. The application module (Business Component Browser) works fine when the DB connection is broken. But when I create a JSF page and put the data control there, if we don't have the DB connection established it gives error during deployment.I tried deleting the unused connection, but that gives a lot of errors during deployment. My question is;
1. How can I create a service interface based data source by-passing the requirement for a connection?
2. If that's not possible - how can I cleanly delete the JDBC connection and all it's dependencies, so that, it deploys and runs without error

Frank,
Thanks for your response.
I have made some progress in last two days and solved some of the original issues. I deleted the fake JDBC connection from connection.xml that I had to use to go to the second screen that lets me select the WSDL for the service interface. After that, I checked off the "Auto Generate and Synchronize ..." option from Application --> Application Properties --> Deployment. (thanks to Steve Muench's blog post on this subject). After that, I could deploy the JSF page and the page shows up with no problem.
However, when I try to run the App Module that was created from the WSDL (service interface), it brings up a pop-up with heading "Password Required" that says "Enter the password for" and asks for a user name and password (not sure what they are as they take any value and takes me to the next screen). After that, I can open the View and navigate through it. When i change some data and try to commit - it makes the change to the data and stores in the DB but gives an error saying "(oracle.jbo.NotConnectedException) JBO-25200: Application module is not connected to a database."
Also, the data control created from the service interface had operations called Commit and Rollback. I used the Commit on JSF page and that does the exact same thing too. Any idea?
Also - when we consume a SDO WSDL to create the entity object - how can we access the SOAP Request and Response objects? We have to implement WS-Security by instrumenting the SOAP header and need to get a handle on that. Is there a mechanism similar to JAX-WS handler framework for SDO?
R,
Chandan

Help on creating Java Classes from WSDL in JDev 10.1.3

Hi all,
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<s:complexType />
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<s:complexType />
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<s:complexType />
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Connect.java
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Do I have to change the way/settings when I am creating the Java Classes using the Wizard? Why is the Wrapper wrapping the WSDL in multiple classes?
Thanks to anyone's help in advance.
Regards,
Baz

An update to my previous Post:
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import oracle.webservices.OracleStub;
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Baz

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I'm having trouble gaining access to the content of those objects within a multilevel tree structure once the XML file has been loaded into the database. Those attributes off root via an editing tool or jsp/bean are rendered; however, the branched object structures are not. Instead the following is in its place: <MYClASSOBJECT2 RefType="ID">7265</MYClASSOBJECT2>
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How to Remove the Entity usage from View object at runtime

Hi,
A ViewObject can be created dynamically based on the Existing ViewObject Defintions. The newly created dynamic ViewObject will have all the defintion including Attributes, its structure along wtih Entity usage of the existing ViewObject definition.
My requirement is i don't want to have the Entity usage alone whereas Remaining structure need to be retained.
Can any body suggest on how to do it.
regards.

Hi,
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70 lines, or ?
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Additional info:
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Creating Z transaction from view cluster

Hi All!
I had created view cluster using SE54.This view cluster contains check tables to be maintained by the user.
Now my problem is how to attach these view cluster to a Z transaction through SE93.In production se54 is not available and i have to attach this view cluster to the Z transaction so that selected users are restricted to use this view cluster.
Regards
Praneeth
Points will be rewarded
Message was edited by: Praneeth kumar

Hi Rusidar,
You can actually use the transaction code SE93 to launch a view cluster. Say you have a view cluster: MYVC. Here is how you can create a transaction code to display this:
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4. In the resulting screen, enter 'SM34' as Default Value for transaction. Then add the following two entries under 'Default Values' section (this section is located towards the end of the screen):
Name of screen field Value
SHOW X (means simulate click on 'Display' button
VCLDIR-VCLNAME MYVC ( This is the technical element that corresponds to the input field in the screen of transaction sm34).
5. Check the checkbox 'Skip Initial Screen'.
6. Save the transaction code.
Try running the code. If your cluster view already works via sm34, it should execute....
Cheers....
Regards,
Shiromani
Edited by: Shiromani Raj Sharma on Dec 26, 2007 10:33 AM

Create Entity class from view

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