Passing dynamic argument in Named Query

I created a class Zoneclass.java in which i defined the toplink mappings of attributes for a table viz. zone.
Now i created a named query as q1 which require a runtime argument arg1.
Basically the query wants to say "select * from Zone(or zoneclass) where zonename='arg1' ." this arg1 should be taken from a textfield for search criteria.
Now when i created the Data Control Pallete of this class and q1(String) is generated in Data Control Pallete.
Now finally i want to use this q1(String) from Data control Pallete on a UIX page .
I will drag it as read only table in a UIX page but it dosen't works bcoz the parameter is not passed so how and where i can pass that argument so that before coming to the tabledata, this query will fire with this argument.
Regards
Somvir

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James:
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Passing an argument in the SQL Query of a View Object

Hi,
It is possible that this question has been asked before, however I have searched for a half an hour in the forums and couldn't find a solution.
I am also new to using JDeveloper and ADF. Here's the situation:
I am developing an application that doesn't have to do anything else then displaying data from a database. Pretty straightforward actually.
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What I want, for example, is to use the 'getPersonId()' function of that User-object and pass the argument to a SQL-query of a certain view-object.
The query would become something like:
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'User clicks on collapsible panel 2 which triggers a backingbean that somehow retrieves data from a view object'.
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-edit
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Message was edited by:
Hugo Boog

Hello Stijn,
I didn't think about a referenced bean rule in the faces-config.
I added it right away and I am now able to set parameters of a View-object, not using a page button and before the page loads. You made my day!
In case anyone ever reads this post again, the summary of how to generate a table based on a View-object using dynamic parameters.:
1a: Go to faces-config.xml -> Overview tab'
1b: Go to the menuitem "Referenced Beans"
1c: Click on 'new' and select the existing bean you want to access data from and input a name. In this example I use name="user"
2: Create a View-object using the wizard.
2a: Specify the query you want in the menuitem 'SQL Statement'.
Add the 'parameters' you want to. You will have something like:
"SELECT * FROM someTable WHERE table.columnname LIKE :someArgument".
- hint: if you want the result to become something like:
"SELECT * FROM someTable WHERE table.columnname LIKE '%someArgument%'" then you have to add the '%'-characters in your code itself (read: someClass.setParameter("%" + someArgument);).
2b: In the menuitem 'Bind Variables' you have to add the variables you are referring to in the query. If you look at the query in 2a, then you have to add a variable with name "someArgument".
2c: Add the View-object to a Application Module (create one if nessecairy).
3a: Open a .jsp(x) file. Drag the View-object created in step 2 from the 'Data Controls'-pane to the page.
3b: Click on the '+' of the View-object in the 'Data Controls'-pane and open 'Operations' and drag 'ExecuteWithParams' to your page as a button.
3c: We do not want to use a button, the action has to be executed immediatly. So In the page source remove the lines that were created after dropping 'ExecuteWithParams'.
3d: Right-click on the page and select "Go to Page Definition".
3e: Go to the action id that is called 'ExecuteWithParams#', where # is a number.
Change the id to something useful.
3f: Change the NDValue so it corresponds with the value you want.
Example:
<action id="getAddressData" IterBinding="AddressesView1Iterator"
InstanceName="MyHRServiceModuleDataControl.AddressView1"
DataControl="MyHRServiceModuleDataControl" RequiresUpdateModel="true" Action="95">
<NamedData NDName="someArgument" NDType="java.lang.String"
NDValue="#{user.personId}"/>
</action>
Note: It is possible to use the value of a Backing Bean in NDValue.
Note 2: user is the bean I referred to in the faces-config.xml!
3g: Under the executables item, add an 'invokeAction' to pass the parameter to the View-object before your JSP-file loads:
<executables>
<invokeAction Binds="getAddressData"
id="loadAddressDataOfPersonIdInSession"
Refresh="prepareModel"/>
Thank Stijn Haus for this :)

Passing an array of objects to a named query

I'm trying to use a named query that will have a
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The in() operator requires an array of objects to pass in.
Specifically I want to pass an array of BigDecimal of unknown size.
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ExpressionBuilder seq = new ExpressionBuilder();
Expression exp = seq.get("id").in(keys);
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query.addArgument("keys");
query.setSelectionCriteria(exp);
And the "keys" would be:
Object[] keys = new Object[2];
keys[0]= new BigDecimal(1);
keys[1]= new BigDecimal(2);
I have got a conversion exception(Could not convert to BigDecimal class) when executing the query.
Can I pass this array as a parameter somehow ?
Thanks a lot
Ovidiu

Hi Ovidiu,
My apologies for the missed code. You need to pass the vector of elements into another vector, so TopLink will interpret the single element of the second vector as the correct query argument, and expend the elements in the first vector into the IN clause.
The named query defined I sent in previous mail is still correct, but you need to pass in the argument like:
Vector keys = new Vector();
keys.addElement(new BigDecimal(1));
keys.addElement(new BigDecimal(2));
Vector arg = new Vector(1);
arg.addElement(keys);
Now you can pass the arg in when executing the query, and should get the correct result.
To stand my claim, I did a mini test using our TopLink Employee demo and here is the generated SQL:
Call:SELECT t0.VERSION, t1.EMP_ID, t0.L_NAME, t0.F_NAME, t1.SALARY, t0.EMP_ID, t0.GENDER, t0.END_DATE, t0.START_DATE, t0.MANAGER_ID, t0.START_TIME, t0.END_TIME, t0.ADDR_ID FROM EMPLOYEE t0, SALARY t1 WHERE ((t0.EMP_ID IN (1, 2)) AND (t1.EMP_ID = t0.EMP_ID))
You can see the IN clause in generated as expected!
As Doug said, we do not officially support array as query argument yet. I would use the proper way to build the query.
King

Dynamically passing the values to IN query in JDBC

Hi,
I have a list which contains a single or multiple values which does have CustomerVO as a generic.Here i need to iterate the list pass these values to "IN" query.
These should happen dynamically, as we dont know whether the list will hold a single or multiple value. If the list.size ==1 , then it contains a single value in it. Hence there is no need for a comma(,) in the IN query else we need to have it, like .... IN (Aaron,Bob). Please help me in this?
Thanks.

797836 wrote:
I have a list which contains a single or multiple values which does have CustomerVO as a generic.Here i need to iterate the list pass these values to "IN" query.
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How to pass the arguments dynamically to a Oracle procedure.

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How to pass the arguments dynamically to a procedure.
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Named query gives a null argument exception in JPQL

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Can someone let me know if there is anything wrong in the way iam passing these parameteres
Edited by: user8769643 on Mar 19, 2010 7:37 AM

i got this working. I am passing dtupdate=SYSDATE which is incorrect. i added one more parameter "q.setParameter(3,new java.util.Date())" to pass today's date and it worked.
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Hi,
I tried to pass dynamic command line argument to Web start using the method :
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error occurred while launching/running the application.
Category: Invalid Argument error
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Thanks.
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<vendor>PS</vendor>
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<j2se version="1.3" />
<jar href="lib/gui.jar" />
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<jar href="lib/classes12.zip" />
<jar href="lib/j2ee.jar" />
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<jar href="lib/xerces.jar" />
<jar href="lib/local_policy.jar" />
<jar href="lib/log4j.jar" />
<jar href="lib/orion.jar" />
<jar href="lib/sunjce_provider.jar" />
<jar href="lib/US_export_policy.jar" />
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<security>
<all-permissions />
</security>
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IN operator in Named Query

hi all,
is it possible to create a named query containing the IN clause if yes how to pass the parameters , i have smth like that:
"select * from tblUsers where employee_number in #param"
what should be the type of the parameter?

You can create a named query using an IN parameter, but you should be careful in doing this as an IN collection is not a valid parameter in SQL. TopLink will handle translating the IN as long as you are using dynamic SQL, or disable the prepare on the query. You can use Vector as the parameter value.
i.e.
ReadAllQuery query = new ReadAllQuery(Employee.class);
query.setSQLString("select * from tblUsers where employee_number in #param");
// Or: query.setSelectionCriteria(query.getExpressionBuilder().get("number").in(query.getExpressionBuilder().getParameter("param")));
query.setShouldPrepare(false);
query.addArgument("param");
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Vector param = new Vector();
param.add(new Integer(1));
param.add(new Integer(2));
param.add(new Integer(3));
args.add(param);
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Named Query Error

Hi,
I'm having trouble passing argument to a named query in the mapping workbench.
Here is my SQL:
SELECT COUNT(*) FROM VALID_PARTY_CLASSIF, CLASSIF_TYPE WHERE CLASSIF_TYPE.CLASSIF_TYPE_ID = VALID_PARTY_CLASSIF.CLASSIF_TYPE_ID AND CLASSIF_TYPE.CLASSIF_TYPE_ID = #ID
and when I find and execute the query, getting following error
Execute query ReadObjectQuery(com.amgen.bria.business.bizobject.ClassificationTypeBO)
SELECT COUNT(*) FROM VALID_PARTY_CLASSIF, CLASSIF_TYPE WHERE CLASSIF_TYPE.CLASSIF_TYPE_ID = VALID_PARTY_CLASSIF.CLASSIF_TYPE_ID AND CLASSIF_TYPE.CLASSIF_TYPE_ID = ?
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Exception [TOPLINK-6044] (OracleAS TopLink - 10g (9.0.4) (Build 031018)): oracle.toplink.exceptions.QueryException
Exception Description: The primary key read from the row [DatabaseRow(
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Query: ReadObjectQuery(com.amgen.bria.business.bizobject.ClassificationTypeBO)Local Exception Stack:
Exception [TOPLINK-6044] (OracleAS TopLink - 10g (9.0.4) (Build 031018)): oracle.toplink.exceptions.QueryException
Exception Description: The primary key read from the row [DatabaseRow(
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Query: ReadObjectQuery(com.amgen.bria.business.bizobject.ClassificationTypeBO)
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     at oracle.toplink.threetier.ClientSession.internalExecuteQuery(ClientSession.java:392)
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     at oracle.toplink.publicinterface.Session.executeQuery(Session.java:1065)
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client released
Please let me know if I am missing anything.
Thanks
Saket

Saket, the problem is right here:
ReadObjectQuery(com.amgen.bria.business.bizobject.Clas
ificationTypeBO)
When you read a an object mapping back, the primary key you have specified for that object mapping in Toplink has to be part of this search criteria (it is how it's stored in toplink's identity map/cache)
Since you are only executing a 'select count(*)', it is erroring out
HTH,
Sean

Passing dynamic parameters to an IR Report

Hello,
We have installed Hyperion BI+ 9.3.1. We are in the process of evaluating the development of IR reports which would
have a requirement to have parameters passed dynamically. For example, we'd be interested in passing a date as a parameter which then would be used by the query inside IR to filter/bring back data from the database pertinent to the date being passed.
The need for this is because once developed we want to execute the IR on a weekly basis whereby the date keeps moving forward to be then used to extract relevent data.
Any thoughts on how this can be done? Also, on a related note are there any backend command line utilities or interfaces that can be used to pass the parameter dynamically to the IR report?
Thanks in advance
Rajesh

Doug,
Thanks for the response. The delivery of the report output would be via Workspace (iHTML). I mentioned date parameter as an example. The report or reports may need to accept other paramaters as well - like department id or product. While the number of parameters and the nature of the parameters would be known ahead of time the value would need to be derived dynamically (by say reading a database table containing transactional data)
As for the command line utility, I am thinking more along the lines of say Oracle Reports which enables you to invoke a run-time command (rwcli60 for example) and pass the necessary arguments to the report.
I have seen the sample java programs that are shipped with the product (and we have used one of them called AddBqy) but haven't seen one that enables passing dynamic parameters.
I will look into the SmartCut option as recommended by you.
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Thanks
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Creating a Java named query?

Hi,
From the application developers manual; is it implied that named queries can be created using the Oracle Toplink API in Java; i.e out of the workbench but I have not been able to find any references to this elsewhere. Does anyone have any information on this? i.e creating the named query in Java code and then adding it to the project deployment.
In addition, is it possible to have it such that if a named query expects 4 arguments; the Java code is written to check if there are any null values passed in, and if the values are null those columns wlil be removed from the query.

There are really two types of queries that apply.
Named queries being those queries defined in Java code at application start up that take a fixed number and types of parameters. These queries are typically added using descriptor after-load methods. In the MW you select the static after-load method where you wish to define your queries. As of TopLink 9.0.4 it is possible to define your named queries with arguments directly in the MW without an after-load method.
Redirect queries are queries where TopLink invokes your method at runtime to execute the query. This approach allows for your code to selectively build the where clause based upon the arguments passed in.
Some links into the docs that may be of interest:
after-load: http://download-west.oracle.com/docs/cd/B10464_01/web.904/b10316/dscriptr.htm#1014978
Using named queries: http://download-west.oracle.com/docs/cd/B10464_01/web.904/b10313/queries.htm#1146839
Redirect queries: http://download-west.oracle.com/docs/cd/B10464_01/web.904/b10313/queries.htm#1141580
Doug

Native TopLink named query with named parameters

Hello,
Defining my metadata in native TopLink xml and using the native TopLink's Session interface I can access and successfully execute a named query using positional parameters (parameters passed to match the ?1 ?2 etc). I used for this the Session.executeQuery(String, Class, List) method e.g.
select p from Person p where p.name = ?1
Now, how can I get the same Session to execute named queries using named parameters? None of the Session.executeQuery methods seem suitable ... Am I missing anything here? e.g.
select p from Person p where p.age = :age
I can't find in Session http://www.oracle.com/technology/products/ias/toplink/doc/1013/main/b13698/oracle/toplink/sessions/Session.html a good match for this use-case. I would expect something like:
Session.executeQuery(String queryName, Class target, List argNames, List argValues)
or
Session.executeQuery(String queryName, Class target, Map argsKeyedByName)
but can't find any good match, can anyone please enlighten me?
Thanks in advance,
Best regards,
Giovanni

Hello Chris,
Many thanks for your response. I am sorry if I did not explain my problem properly.
Suppose I already defined a named query in the metadata XXXProject.xml using the <opm:querying ... this JPQL named query "customFinder" already exists and would look something like:
select p from Person p where p.firstname=:firstname and p.lastname=:lastname and p.birthdate=:birthdate
now say you want to execute this query from the Session:
Vector args = new Vector();
// how do you know the order? you shouldn't know the order!
// you know only the parameter names and that's what I mean
// about named parameters
// This args setup is wrong ... I need a way to specify to which
// parameter name each argument corresponds to. In other words
// if the named query where criteria order of parameters is modified
// perhaps because of pruning composite keys etc you won't break the
// existing code ...
args.add(new Date());
args.add("Azua");
args.add("Giovanni");
Session session = ...
session.executeQuery("customFinder", Person.class, args);
JPA supports both type of queries positional parameters and named parameters. Your explanation above is only for the first, my question refers to the later.
I have not yet found the api for this ... though I am investigating along the lines of:
Query query = session.getQuery("customFinder");
and then try to assign the arguments in the same order that the parameters are defined in query or?
Thanks in advance,
Best regards,
Giovanni
Edited by: bravegag on 29.05.2009 08:06

Named Query / MaxRows-Value as Parameter?

Hello!
Í'm using Toplink 10.1.2 with named queries.
How can I set "maxRows" as additional parameter for a named query?
eg.
ReadAllQuery raq = new ReadAllQuery(MyBean.class);
ExpressionBuilder eb = new ExpressionBuilder();
raq.addArgument("searchString")
raq.setMaxRows( ... ) ==> should be an int - value.
regards
Harald.

Query arguments can only be used in the selection criteria, not as maxRows or other query properties.
It may be best to use a dynamic query for this operation, or define multiple named queries for the query with different maxRow options if there are a fixed amount.
You can also define a QueryRedirector on the named query to allow execution of a dynamic query in place of the name query.

TopLink ADF binding named query parameterised

Repost from JDEV forum
What is the easieast way to execute parameterised named queries using TopLink and ADF databinding?
Better yet what would be the best practice to combine parametrised named queries with ADF data binding/controls. Data Binding Primer document is geared mostly towards BC rather than TopLink, any similar docs for TopLink that would have detailed "HowTo's" ? Application Developer Guide does not mention binding/controls.
Thanks.

The easiest way is to define a query on the model object (e.g. Employee) and then regenerate the toplink deployment descriptor and the datacontrol.
This should expose the new query to the Datacontrol pallete. You can then use drag and drop to use the new query on the jsp/struts etc.
If you have a query that takes in arguments, you may want to look at http://www.oracle.com/technology/products/jdev/tips/shmeltzer/setwhereclause/index.html
Basically it boils down to passing text etc. to the arguments of your query.

Passing dynamic argument in Named Query

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