Named query, nested

If I defined a named query like the following select * from (
     select q.*, rownum r from user04.quote q
     where version = 1
     order by id
where r between #startIndex and #endIndex I can achieve the 'paging' function by specifying the starting row and ending row for the query at runtime.
However, if I modify the query by supplying an argument in the inner select, like this select * from (
     select q.*, rownum r from user04.quote q
     where version =#id
     order by id
where r between #startIndex and #endIndex my code will fail with NullPointerException in SQLCall. Here is the trace: [5/28/05 19:48:40:816 EDT] 468db180 SystemOut     O 2005.05.28 07:48:40.816--ClientSession(1108210094)--Thread[Servlet.Engine.Transports : 2,5,main]--java.lang.NullPointerExceptionjava.lang.NullPointerException
     at oracle.toplink.queryframework.SQLCall.translate(SQLCall.java:266)
     at oracle.toplink.internal.queryframework.CallQueryMechanism.executeCall(CallQueryMechanism.java:133)
     at oracle.toplink.internal.queryframework.CallQueryMechanism.executeCall(CallQueryMechanism.java:115)
     at oracle.toplink.internal.queryframework.CallQueryMechanism.executeSelectCall(CallQueryMechanism.java:197)
     at oracle.toplink.internal.queryframework.CallQueryMechanism.selectAllRows(CallQueryMechanism.java:567)
     at oracle.toplink.queryframework.ReadAllQuery.execute(ReadAllQuery.java:447)Is this an expected behavior of named query or a bug in named query? Thanks.
Haiwei

Solved the problem by
1) adding an space (i.e. blank) after #id
and 2) removing the blank line at the end of the SQL query.
It seems that there is a bug in the TopLink code parsing the SQL. My best advice is to not use new line, tab. Use hard space as de-limiter instead. The debugging is very time-consuming.
Please feel free to comment on my findings.
Haiwei

Similar Messages

How to write named query if we want to use IN syntax in our sql statement?

I cannot find a suitable category about named query, so please move to appropriate place if there is any.
When we write named query, below statement is fine.
Query q2 = em.createQuery("SELECT o FROM Table1 as o WHERE field1 = :input1");             q2.setParameter("input1", "value1");
Now, my question is, how can I write this type of query when we want to use the IN sql syntax? As below statement CANNOT return correct results. Even I tried to put a pair of single quote [ ':input2' ], it won't help also.
Query q2 = em.createQuery("SELECT o FROM Table1 as o WHERE field2 IN (:input2)");             q2.setParameter("input1", "3633, 3644");
Can anyone suggest? Thanks.

roamer wrote:
Now, my question is, how can I write this type of query when we want to use the IN sql syntax? As below statement CANNOT return correct results. Even I tried to put a pair of single quote [ ':input2' ], it won't help also.
Query q2 = em.createQuery("SELECT o FROM Table1 as o WHERE field2 IN (:input2)");
q2.setParameter("input1", "3633, 3644");
Can anyone suggest?The above is in your code right? Not in some configuration file?
Then you do it the same way as with regular jdbc/sql.
1. You start with a collection of values - call it collection A.
1. Create a for loop that dynamically creates the string using 'bind' variables (whatever you want to call the 'colon' entity in the above).
2. Call the createQuery method using the string that was created
3. Create a second loop that iterates over A and populates with setParameter.
Pseudo code
        Object[] A = ...
        String sql = "SELECT o FROM Table1 as o WHERE field2 IN (";
        for (int i=1; i <= A.length; i++)
              if (i == 1)
                 sql += ":input" + i;
             else
                 sql += ",:input" + i;
        sql += ")";
        Query q2 = em.createQuery(sql);
        for (int i=1; i <= A.length; i++
              q2.setParameter("input" + i, A[i-1]);
              }By the way there is a jdbc forum.

Snowflake dimension: named query vs. database view

A test question features a Product table with a Product Size code; Product Size description is taken from ProductSize table. As far as I can tell, the question asks me to choose between (a) setting up a database view joining Product and ProductSize, and
(b) doing the join in a data-source-view named query. I don't see a clear winner. (My thinking is as follows. Yes, he view would speed up the processing, even if not materialized. On the other hand, with a small dataset, the performance gain would be
minor in absolute terms. Do I want to have an extra database object in the picture?) Yet the question's author does. Can anyone advise please?

Hi Demyan,
According to your description, you want to know which is better, using named query in datasource view or using database view, right?
Based on my research, there is no performance differences between using named query in datasource view and using database view because they both result in SQL query being sent to the source system. Here is a blog which discuss this issue.
Consistency: If you already have logic in database views, I would continue to use them. As long as you know that you go to one spot to view/change the logic. Putting the logic in 2 different spots could lead to confusion.
Security Permissions: often you may not have permission to alter the source databases, in this case you have no choice but to setup named queries in the dsv.
Reference
http://geekswithblogs.net/darrengosbell/archive/2006/09/05/90278.aspx
http://bennyaustin.wordpress.com/2013/07/16/dbview/
Regards,
Charlie Liao
TechNet Community Support

How to create olap cube using Named Query Table in Data source View

I Create on OLAP Cube using Existing Tables Its Working Fine But When i Use Named Query Table with RelationShip To other Named query Table It Not Working .So give me some deep Clarification On Olap Cube for Better Understanding
Thanks

Hi Pawan,
What do you mean "It Not Working"？ As Kamath said, please post the detail error message, so that we can make further analysis.
In the Data Source View of a CUBE, we can define a named query. In a named query, you can specify an SQL expression to select rows and columns returned from one or more tables in one or more data sources. A named query is like any other table in a data source
view (DSV) with rows and relationships, except that the named query is based on an expression.
Reference:Define Named Queries in a Data Source View (Analysis Services)
Regards,
Charlie Liao
TechNet Community Support

AVG calculation and syntax error while parsing a named query

Hi all,
I've to calcolate the average of polling results for each value column (5 value column in total). I want to use this single row result line for a bar graph.
I created a new named query in the EJB:
@NamedQueries({
@NamedQuery(name = "Polls.findAll", query = "select o from Polls o"),
@NamedQuery(name = "Polls.findAVG", query = "select o AVG(Value1) as Value1, AVG(Value2) as Value2, AVG(Value3) as Value3, AVG(Value4) as Value4, AVG(Value5) as Value5 o from Polls o")   // <-- my named query
...I tried it in the sql query tool of Oracle 10g XE and sql syntax is ok, but when I run my javaServiceFacade on JDev I receive this message:
Exception in thread "main" Local Exception Stack:
Exception [EclipseLink-8023] (Eclipse Persistence Services - 1.0.1 (Build 20080905)): org.eclipse.persistence.exceptions.JPQLException
Exception Description: Syntax error parsing the query [Polls.findAVG: select AVG(Value1) as Value1, AVG(Value2) as Value2, AVG(Value3) as Value3, AVG(Value4) as Value4, AVG(Value5) as Value5 o from Polls o].
Internal Exception: org.eclipse.persistence.internal.libraries.antlr.runtime.EarlyExitException
...Where is the syntax error in my named query?
Edited by: Silicio on 22-nov-2008 1.05

Thanks Shay, now I think syntax is correct for gain an average for each column:
@NamedQuery(name = "Polls.findAVG", query = "select AVG(o.value1), AVG(o.value2), AVG(o.value3), AVG(o.value4), AVG(o.value5) from Polls o")But still got some trouble to get a bar graph...
If I drag&drop that query from data control, I get an empty graph with 5 values ,look http://img153.imageshack.us/img153/8710/emptygraphag7.png .
In the log there is some errors (due that named query and its methods in EJB):
AVVERTENZA: Transient state added to StateManager. State may not be serialized. State id: data.oracle_view_risultatiPageDef.Polls1__cubicDefinition
23-nov-2008 11.08.28 oracle.adf.share.http.HttpSessionStateManagerImpl putState
AVVERTENZA: Transient state added to StateManager. State may not be serialized. State id: data.oracle_view_risultatiPageDef.Polls1__dataModel
[EL Info]: 2008.11.23 11:08:29.546--ServerSession(20936795)--EclipseLink, version: Eclipse Persistence Services - 1.0.1 (Build 20080905)
[EL Info]: 2008.11.23 11:08:29.562--ServerSession(20936795)--Server: WebLogic Server Temporary Patch for CR380042 Thu Sep 11 13:33:40 PDT 2008
[EL Info]: 2008.11.23 11:08:29.562--ServerSession(20936795)--file:/C:/Oracle/Middleware/jdeveloper/system/system11.1.1.0.31.51.56/o.j2ee/drs/Application13/Application13-Model-ejb/-Model login successful
23-nov-2008 11.08.37 oracle.adfinternal.view.faces.config.rich.RegistrationConfigurator handleError
GRAVE: Server Exception during PPR, #1
oracle.jbo.JboException: JBO-29000: Unexpected exception caught: groovy.lang.MissingPropertyException, msg=Exception evaluating property 'id' for java.util.Arrays$ArrayList, Reason: groovy.lang.MissingPropertyException: No such property: id for class: java.lang.Double
     at oracle.jbo.ExprEval.internalEvaluateGroovyScript(ExprEval.java:753)
     at oracle.jbo.ExprEval.doEvaluate(ExprEval.java:779)
     at oracle.jbo.ExprEval.evaluateForRow(ExprEval.java:690)
     at oracle.jbo.server.AttributeDefImpl.evaluateTransientExpression(AttributeDefImpl.java:1816)
     at oracle.jbo.server.ViewRowStorage.getAttributeInternal(ViewRowStorage.java:1554)
     at oracle.jbo.server.ViewRowImpl.getAttributeValue(ViewRowImpl.java:1634)
     at oracle.jbo.server.ViewRowImpl.getAttributeInternal(ViewRowImpl.java:746)
     at oracle.adf.model.bean.DCDataRow.getAttributeInternal(DCDataRow.java:352)
     at oracle.jbo.server.ViewRowImpl.getKey(ViewRowImpl.java:598)
     at oracle.adf.model.bean.DCDataRow.getKey(DCDataRow.java:149)
     at oracle.adf.model.binding.DCIteratorBinding.buildFormToken(DCIteratorBinding.java:3836)
     at oracle.adf.model.binding.DCBindingContainerState.buildStringBuffer(DCBindingContainerState.java:71)
     at oracle.adf.model.binding.DCBindingContainerState.toString(DCBindingContainerState.java:590)
     at oracle.adf.model.binding.DCBindingContainer.getStateToken(DCBindingContainer.java:4293)
     at oracle.adfinternal.controller.application.model.SaveStateTokenListener.afterPhase(SaveStateTokenListener.java:54)
     at oracle.adfinternal.controller.lifecycle.ADFLifecycleImpl$PagePhaseListenerWrapper.afterPhase(ADFLifecycleImpl.java:529)
     at oracle.adfinternal.controller.lifecycle.LifecycleImpl.internalDispatchAfterEvent(LifecycleImpl.java:118)
     at oracle.adfinternal.controller.lifecycle.LifecycleImpl.dispatchAfterPagePhaseEvent(LifecycleImpl.java:166)
     at oracle.adfinternal.controller.faces.lifecycle.ADFPhaseListener$PhaseInvokerImpl.dispatchAfterPagePhaseEvent(ADFPhaseListener.java:122)
     at oracle.adfinternal.controller.faces.lifecycle.ADFPhaseListener.afterPhase(ADFPhaseListener.java:68)
     at oracle.adfinternal.controller.faces.lifecycle.ADFLifecyclePhaseListener.afterPhase(ADFLifecyclePhaseListener.java:51)
     at oracle.adfinternal.view.faces.lifecycle.LifecycleImpl._executePhase(LifecycleImpl.java:354)
     at oracle.adfinternal.view.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:203)
     at javax.faces.webapp.FacesServlet.service(FacesServlet.java:266)
     at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
     at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
     at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:292)
     at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:26)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:42)
     at oracle.adf.model.servlet.ADFBindingFilter.doFilter(ADFBindingFilter.java:181)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:42)
     at oracle.adfinternal.view.faces.webapp.rich.RegistrationFilter.doFilter(RegistrationFilter.java:85)
     at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl$FilterListChain.doFilter(TrinidadFilterImpl.java:278)
     at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl._invokeDoFilter(TrinidadFilterImpl.java:238)
     at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl._doFilterImpl(TrinidadFilterImpl.java:195)
     at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl.doFilter(TrinidadFilterImpl.java:138)
     at org.apache.myfaces.trinidad.webapp.TrinidadFilter.doFilter(TrinidadFilter.java:92)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:42)
     at oracle.security.jps.wls.JpsWlsFilter.doFilter(JpsWlsFilter.java:102)
     at oracle.security.jps.ee.http.JpsFilter.doFilter(JpsFilter.java:65)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:42)
     at weblogic.servlet.internal.RequestEventsFilter.doFilter(RequestEventsFilter.java:27)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:42)
     at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3496)
     at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
     at weblogic.security.service.SecurityManager.runAs(Unknown Source)
     at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2180)
     at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2086)
     at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1406)
     at weblogic.work.ExecuteThread.execute(ExecuteThread.java:201)
     at weblogic.work.ExecuteThread.run(ExecuteThread.java:173)
Caused by: groovy.lang.MissingPropertyException: Exception evaluating property 'id' for java.util.Arrays$ArrayList, Reason: groovy.lang.MissingPropertyException: No such property: id for class: java.lang.Double
     at org.codehaus.groovy.runtime.DefaultGroovyMethods.getAt(DefaultGroovyMethods.java:2978)
     at groovy.lang.MetaClassImpl.getProperty(MetaClassImpl.java:1368)
     at groovy.lang.MetaClassImpl.getProperty(MetaClassImpl.java:2578)
     at org.codehaus.groovy.runtime.InvokerHelper.getProperty(InvokerHelper.java:178)
     at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.getProperty(ScriptBytecodeAdapter.java:474)
     at Script1.run(Script1.groovy)
     at oracle.jbo.ExprEval.internalEvaluateGroovyScript(ExprEval.java:741)
     ... 50 more
## Detail 0 ##
groovy.lang.MissingPropertyException: Exception evaluating property 'id' for java.util.Arrays$ArrayList, Reason: groovy.lang.MissingPropertyException: No such property: id for class: java.lang.Double
     at org.codehaus.groovy.runtime.DefaultGroovyMethods.getAt(DefaultGroovyMethods.java:2978)
     at groovy.lang.MetaClassImpl.getProperty(MetaClassImpl.java:1368)
     at groovy.lang.MetaClassImpl.getProperty(MetaClassImpl.java:2578)
     at org.codehaus.groovy.runtime.InvokerHelper.getProperty(InvokerHelper.java:178)
     at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.getProperty(ScriptBytecodeAdapter.java:474)
     at Script1.run(Script1.groovy)
     at oracle.jbo.ExprEval.internalEvaluateGroovyScript(ExprEval.java:741)
     at oracle.jbo.ExprEval.doEvaluate(ExprEval.java:779)
     at oracle.jbo.ExprEval.evaluateForRow(ExprEval.java:690)
     at oracle.jbo.server.AttributeDefImpl.evaluateTransientExpression(AttributeDefImpl.java:1816)
     at oracle.jbo.server.ViewRowStorage.getAttributeInternal(ViewRowStorage.java:1554)
     at oracle.jbo.server.ViewRowImpl.getAttributeValue(ViewRowImpl.java:1634)
     at oracle.jbo.server.ViewRowImpl.getAttributeInternal(ViewRowImpl.java:746)
     at oracle.adf.model.bean.DCDataRow.getAttributeInternal(DCDataRow.java:352)
     at oracle.jbo.server.ViewRowImpl.getKey(ViewRowImpl.java:598)
     at oracle.adf.model.bean.DCDataRow.getKey(DCDataRow.java:149)
     at oracle.adf.model.binding.DCIteratorBinding.buildFormToken(DCIteratorBinding.java:3836)
     at oracle.adf.model.binding.DCBindingContainerState.buildStringBuffer(DCBindingContainerState.java:71)
     at oracle.adf.model.binding.DCBindingContainerState.toString(DCBindingContainerState.java:590)
     at oracle.adf.model.binding.DCBindingContainer.getStateToken(DCBindingContainer.java:4293)
     at oracle.adfinternal.controller.application.model.SaveStateTokenListener.afterPhase(SaveStateTokenListener.java:54)
     at oracle.adfinternal.controller.lifecycle.ADFLifecycleImpl$PagePhaseListenerWrapper.afterPhase(ADFLifecycleImpl.java:529)
     at oracle.adfinternal.controller.lifecycle.LifecycleImpl.internalDispatchAfterEvent(LifecycleImpl.java:118)
     at oracle.adfinternal.controller.lifecycle.LifecycleImpl.dispatchAfterPagePhaseEvent(LifecycleImpl.java:166)
     at oracle.adfinternal.controller.faces.lifecycle.ADFPhaseListener$PhaseInvokerImpl.dispatchAfterPagePhaseEvent(ADFPhaseListener.java:122)
     at oracle.adfinternal.controller.faces.lifecycle.ADFPhaseListener.afterPhase(ADFPhaseListener.java:68)
     at oracle.adfinternal.controller.faces.lifecycle.ADFLifecyclePhaseListener.afterPhase(ADFLifecyclePhaseListener.java:51)
     at oracle.adfinternal.view.faces.lifecycle.LifecycleImpl._executePhase(LifecycleImpl.java:354)
     at oracle.adfinternal.view.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:203)
     at javax.faces.webapp.FacesServlet.service(FacesServlet.java:266)
     at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
     at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
     at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:292)
     at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:26)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:42)
     at oracle.adf.model.servlet.ADFBindingFilter.doFilter(ADFBindingFilter.java:181)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:42)
     at oracle.adfinternal.view.faces.webapp.rich.RegistrationFilter.doFilter(RegistrationFilter.java:85)
     at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl$FilterListChain.doFilter(TrinidadFilterImpl.java:278)
     at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl._invokeDoFilter(TrinidadFilterImpl.java:238)
     at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl._doFilterImpl(TrinidadFilterImpl.java:195)
     at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl.doFilter(TrinidadFilterImpl.java:138)
     at org.apache.myfaces.trinidad.webapp.TrinidadFilter.doFilter(TrinidadFilter.java:92)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:42)
     at oracle.security.jps.wls.JpsWlsFilter.doFilter(JpsWlsFilter.java:102)
     at oracle.security.jps.ee.http.JpsFilter.doFilter(JpsFilter.java:65)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:42)
     at weblogic.servlet.internal.RequestEventsFilter.doFilter(RequestEventsFilter.java:27)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:42)
     at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3496)
     at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
     at weblogic.security.service.SecurityManager.runAs(Unknown Source)
     at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2180)
     at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2086)
     at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1406)
     at weblogic.work.ExecuteThread.execute(ExecuteThread.java:201)
     at weblogic.work.ExecuteThread.run(ExecuteThread.java:173)I try to print out a singlue AVG value in this way (main method of javaServerFacade class):
    public static void main(String [] args) {
        final JavaServiceFacade javaServiceFacade = new JavaServiceFacade();
        // TODO: Call methods on javaServiceFacade here...
        List<Polls> pollsAVG = javaServiceFacade.queryPollsFindAVG();
        for (Polls a: pollsAVG){
            System.out.println(a.getValue1());
...I get this error:
Exception in thread "main" java.lang.ClassCastException: [Ljava.lang.Object; cannot be cast to oracle.model.Polls
     at oracle.model.JavaServiceFacade.main(JavaServiceFacade.java:25)
Process exited with exit code 1.
...I've searched for Ljava in the documantation finding nothing interesting.

Order by clause with Named Query

hi
i have to give order by clause in Named Query
how we have to specify is can any body help
thanks
Harish

Assuming an Entity called Handset:
select h from Handset h order by h.description

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");
Vector args = new Vector();
Vector param = new Vector();
param.add(new Integer(1));
param.add(new Integer(2));
param.add(new Integer(3));
args.add(param);
session.executeQuery(query, args);
// Or: session.executeQuery("findAllWithNumbers", Employee.class, args);

Derby db named query causes parse error when using derby db MONTH function

Hi all!
I'm trying to create an application using the persistance api and beans binding. I have created my database and entity classes.
My problem is creating a named query that uses some of the functionality from the derby database (which is embedded in the application).
I have a named query:
@NamedQuery(name = "Vehicles.findbymotmonth", query = "SELECT v FROM Vehicles v WHERE MONTH(v.lastmotdate) = :monthnumber") The actual query works fine when I send it directly to the db (with the parameter filled in) but causes an exception when used as a named query:
Local Exception Stack:
Exception [TOPLINK-8025] (Oracle TopLink Essentials - 2.0.1 (Build b09d-fcs (12/06/2007))): oracle.toplink.essentials.exceptions.EJBQLException
Exception Description: Syntax error parsing the query [Vehicles.findbymotmonth: SELECT v FROM Vehicles v WHERE MONTH(v.lastmotdate) = :monthnumber], line 1, column 32: unexpected token [MONTH].
Internal Exception: line 1:32: unexpected token: MONTH
at oracle.toplink.essentials.exceptions.EJBQLException.unexpectedToken(EJBQLException.java:389)
... I've tried looking for solutions online but it seems evryone just writes up the original java db application example provided by sun and no one has tried doing more than "select c from customers c".
I'm using the netbeans ide (6.5).
Please tell me there is a simple solution to this and the persistance API can handle complex queries!
Thanks in advance.

one solution: assume the toplink library to be so full of bugs as to be unusable and switch to the hibernate persistance manager where it works fine.
Edited by: pointer2null on Feb 17, 2009 11:02 AM

Named Query problem

Hi,
I have a new Query proplem: Following named Query doesn't work.
<?xml version="1.0"?>
<jdoquery>
<query name="findByArticleId">
select from salt.domain.orderservice.entity.TestOrder where
testOrderPositions.contains(testOrderPosition) &&
testOrderPosition.idArticle==:t</query>-->
</jdoquery>

Sorry, please ignore my posting! I've found the mistake!

Limiting records in a named query

Hello,
I can retrieve all the records using the following named query:
<named-query name="emploee.findemployees">
<query>select e from employee e </query>
</named-query>
Can somebody help me how i can retrieve only the first 5 records using the named queries?
Thank you in advance,
Reddy

Thanks for the tip vijaykumar. Your tip helped me to go further.
TOP keyword only seem to work with SQLServer 7.0 and above.
We are using MySQL. So the equivalent syntax in MySQL is
Select * from employee LIMIT 0,5.
This query works fine in my MySQL Query Browser. But it does not work with Hibernate. Does anybody know how to make this query work with Hibernate?
Thanks in advance,
Reddy

Passing an array of objects to a named query

I'm trying to use a named query that will have a
in() expression operator (clause) to retrieve a set of objects.
The in() operator requires an array of objects to pass in.
Specifically I want to pass an array of BigDecimal of unknown size.
The query looks like that:
ExpressionBuilder seq = new ExpressionBuilder();
Expression exp = seq.get("id").in(keys);
ReadAllQuery query = new ReadAllQuery();
query.setReferenceClass(RegistrationNumberSequencer.class);
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

Order By in Named Query

Hello,
is it possible to set ORDER BY in a Named Query Expression build through the Expression Builder?
Or is it possible to trigger this while executing the Named Query in the UnitOfWork?
Thanks,
Thomas

Nemata,
The mapping editor in JDeveloper does not yet allow you to configure query ordering. To do this you will need to write a piece of code called an after-load or ammendment method that customizes descriptor configuration when being loaded from the XML representation. In this method you will look up the query you defined and customize any additional settings, such as ordering.
An example after-load method would be placed on any arbitrary helper class and would look like:
    public static void afterLoadEmployee(ClassDescriptor descriptor) {
        ReadAllQuery raq = (ReadAllQuery)descriptor.getDescriptorQueryManager().getQuery("findAllEmployee");
        raq.addAscendingOrdering("lastName");
    }To have this method invoked you will need to configure it on the descriptor in the JDeveloper mapping editor.
1. In the structure pane when the map is selected go to the descriptor for the class you wish to customize its query.
2. Using the right mouse menu on the descriptor select the advanced properties sub-menu and select 'after-load'. This will enable the additional after-load tab on the descriptor's editor.
3. In this after-load panel you will need to specify the helper class where the static after-load method is written as well as the signature for the method wanted.
Now, the next time the application is run this method will be invoked and you ordering customizations will be applied.
This may sound a little complex but is a very useful technique for configuration or customization of descriptor, mapping, or query parameters that are not visible in the mapping editor or are more easily accomplished through code.
Doug

Can't execute SQL Named query that uses connect by...

I'm having problems using the connect by with ReportQuery.setHierarchicalQueryClause (detailed in earlier post) so I defined a named query to execute the following sql;
select distinct(role_id)
from role_principal
connect by prior role_id = principal_id
start with principal_id = #principalId
When I run similar SQL in SqlPlus, i get results like this;
ROLE_ID
202
500
501
502
503
But when I run the query using Toplink like this;
Vector args = new Vector();
args.add(principal.getId());
roles = (Vector) session.executeQuery("orclGetRolesOfPrincipal", args);
I get this exception;
TopLink Warning]: 2005.10.05 10:58:14.362--ClientSession(18082301)--Thread(Thread[main,5,main])--Local Exception Stack:
Exception [TOPLINK-6044] (Oracle TopLink - 10g Developer Preview 3 (10.1.3.0 ) (Build 041116)): oracle.toplink.exceptions.QueryException
Exception Description: The primary key read from the row [DatabaseRecord(
     ROLE_PRINCIPAL.ROLE_ID => 202)] during the execution of the query was detected to be null. Primary keys must not contain null.
Query: ReadAllQuery(oracle.xdo.server.security.authorization.model.RolePrincipalRelation)
     at oracle.toplink.exceptions.QueryException.nullPrimaryKeyInBuildingObject(QueryException.java:662)
     at oracle.toplink.internal.descriptors.ObjectBuilder.buildObject(ObjectBuilder.java:349)
     at oracle.toplink.internal.descriptors.ObjectBuilder.buildObjectsInto(ObjectBuilder.java:633)
     at oracle.toplink.internal.queryframework.DatabaseQueryMechanism.buildObjectsFromRows(DatabaseQueryMechanism.java:141)
     at oracle.toplink.queryframework.ReadAllQuery.executeObjectLevelReadQuery(ReadAllQuery.java:440)
     at oracle.toplink.queryframework.ObjectLevelReadQuery.executeDatabaseQuery(ObjectLevelReadQuery.java:727)
     at oracle.toplink.queryframework.DatabaseQuery.execute(DatabaseQuery.java:559)
     at oracle.toplink.queryframework.ReadAllQuery.execute(ReadAllQuery.java:408)
     at oracle.toplink.publicinterface.Session.internalExecuteQuery(Session.java:1977)
     at oracle.toplink.publicinterface.Session.executeQuery(Session.java:973)
     at oracle.toplink.publicinterface.Session.executeQuery(Session.java:945)
     at oracle.xdo.server.dataservices.impl.toplink.TLDataAccessManagerImpl.getObjects(TLDataAccessManagerImpl.java:346)
It seems to have a problem that there's not a parent record for role_id 202, which is a root level record and so should not have a parent.
I appreciate any help that can be provided.
Thanks,
-Tim Watson

Hello Tim,
Not sure of the problem in the first post, but in this one, you are executing the query as a ReadAllQuery. The results only contain the role_id, but TopLink expecting atleast all the primary key fields inorder to build the objects to return them to you. Try executing this SQL in a report query instead, or set the results to return all the fields so TopLink can build the objects.
Best Regards,
Chris

Wrong parameter substitution in named query

We are on TopLink 10.1.3
We have a named query – ‘Select * from table where userid = #userid and status = #status’
This query executes correctly most of the times, but intermittently it will substitute the first parameter’s(id) value for both id and status parameters.
There is nothing consistent about it, just seems to randomly happens and that too only on PROD.
There are no errors, but the data retrieved is wrong.
When the query is executed correctly we get
SELECT * FROM table WHERE ((userid_C = ‘user1’) AND (status = ‘N’))
But when it does not this is what the log shows -
SELECT * FROM table WHERE ((userid_C = ‘user1’) AND (status = ‘user1’))
Can someone please throw some light on this weird behavior?
Thanks.

Odd, I have never heard of this before.
Try narrowing down when it occurs, and try to recreate in a test case.
Check that your own code is thread safe, and is passing the correct parameters to the query. Include your code for the query execution.

Creating Named Query: from OracleCallableStatement

We have a great many PL/SQL Procs in an existing legacy system that return PL/SQL Boolean, that we wish to call from toplink.
Ideally we would like to create Toplink Nameded queries that wrap the SQL call statements.
Does anyone know if its possible to convert a call like the following into a Toplink named query?
String domain = "COST CENTRE";
String value = "OP";
OracleCallableStatement xcall = (OracleCallableStatement) con.prepareCall(
"BEGIN ? := SYS.SQLJUTL.bool2int(is_valid_value(?, ?)); END;");
xcall.registerOutParameter( 1, OracleTypes.INTEGER);
xcall.setString(2,domain);
xcall.setString(3,value);
xcall.execute();
System.out.println ("Status = " + xcall.getInt(1));
FUNCTION is_valid_value(
p_rv_domain IN CG_REF_CODES.RV_DOMAIN%TYPE,
p_rv_low_value IN CG_REF_CODES.RV_LOW_VALUE%TYPE
RETURN BOOLEAN
IS
Many thanks,
Lee.

You can define Stored Procedure calls in TopLink through the StoredProcedureCall class. StoredProcedureCall allows you to define output parameters to access return values.
Example:
StoredProcedureCall call = new StoredProcedureCall();
call.setProcedureName("is_valid_value");
call.addNamedArgumentValue("DOMAIN", domain);
call.addNamedArgumentValue("VALUE", value);
call.addNamedOutputArgument("RESULT", "RESULT", Integer.class);
List results = session.executeSelectingCall(call);
boolean value = ((Integer) ((Map) results.get(0)).get("RESULT")).intValue() == 0;
However what you seem to be accessing is a stored function, not a procedure. To access a stored function from TopLink you must use an SQLCall and select the return value through the DUAL table.
Example:
SQLCall call = new SQLCall("Select SYS.SQLJUTL.bool2int(is_valid_value(" + domain + ", " + value + ")) from dual");
List results = session.executeSelectingCall(call);

Named query, nested

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