Edit a TopLink Expression

Hi. I am design a application in Jdeveloper 11g, but i have a problem with a try to edit a toplink expression a first argument, in the button edit I click in this button but nothing happend. Why happend this, i need edit this first argument but i can not.
Thanks...

I am also having this problem using JDevloper 11g Update 2 for OSX. The Expression Builder works fine on smaller projects but chokes on larger ones. It also doesn't seem to work for the Batch Read Attributes and Joined Attributes buttons.
The following error shows up in my console:
30/04/09 11:59:07 AM [0x0-0x113113].oracle.ide.boot.Launcher[3761] Exception in thread "AWT-EventQueue-0"
30/04/09 11:59:07 AM [0x0-0x113113].oracle.ide.boot.Launcher[3761] java.lang.StackOverflowError
30/04/09 11:59:07 AM [0x0-0x113113].oracle.ide.boot.Launcher[3761] at java.lang.StringBuffer.<init>(StringBuffer.java:104)
30/04/09 11:59:07 AM [0x0-0x113113].oracle.ide.boot.Launcher[3761] at sun.text.normalizer.ReplaceableString.<init>(ReplaceableString.java:46)
30/04/09 11:59:07 AM [0x0-0x113113].oracle.ide.boot.Launcher[3761] at sun.text.normalizer.ReplaceableUCharacterIterator.<init>(ReplaceableUCharacterIterator.java:44)
30/04/09 11:59:07 AM [0x0-0x113113].oracle.ide.boot.Launcher[3761] at sun.text.normalizer.UCharacterIterator.getInstance(UCharacterIterator.java:66)
30/04/09 11:59:07 AM [0x0-0x113113].oracle.ide.boot.Launcher[3761] at sun.text.normalizer.NormalizerBase.<init>(NormalizerBase.java:559)
30/04/09 11:59:07 AM [0x0-0x113113].oracle.ide.boot.Launcher[3761] at sun.text.normalizer.NormalizerBase.<init>(NormalizerBase.java:1563)
30/04/09 11:59:07 AM [0x0-0x113113].oracle.ide.boot.Launcher[3761] at java.text.CollationElementIterator.<init>(CollationElementIterator.java:105)
30/04/09 11:59:07 AM [0x0-0x113113].oracle.ide.boot.Launcher[3761] at java.text.RuleBasedCollator.getCollationElementIterator(RuleBasedCollator.java:303)
30/04/09 11:59:07 AM [0x0-0x113113].oracle.ide.boot.Launcher[3761] at java.text.RuleBasedCollator.compare(RuleBasedCollator.java:346)
30/04/09 11:59:07 AM [0x0-0x113113].oracle.ide.boot.Launcher[3761] at oracle.toplink.workbench.utility.node.Node$1.compare(Node.java:436)
30/04/09 11:59:07 AM [0x0-0x113113].oracle.ide.boot.Launcher[3761] at oracle.toplink.workbench.utility.node.Node$1.compare(Node.java:428)
30/04/09 11:59:07 AM [0x0-0x113113].oracle.ide.boot.Launcher[3761] at java.util.Arrays.mergeSort(Arrays.java:1270)
30/04/09 11:59:07 AM [0x0-0x113113].oracle.ide.boot.Launcher[3761] at java.util.Arrays.mergeSort(Arrays.java:1281)
30/04/09 11:59:07 AM [0x0-0x113113].oracle.ide.boot.Launcher[3761] at java.util.Arrays.mergeSort(Arrays.java:1282)
30/04/09 11:59:07 AM [0x0-0x113113].oracle.ide.boot.Launcher[3761] at java.util.Arrays.mergeSort(Arrays.java:1281)
30/04/09 11:59:07 AM [0x0-0x113113].oracle.ide.boot.Launcher[3761] at java.util.Arrays.sort(Arrays.java:1210)
30/04/09 11:59:07 AM [0x0-0x113113].oracle.ide.boot.Launcher[3761] at java.util.Collections.sort(Collections.java:159)
30/04/09 11:59:07 AM [0x0-0x113113].oracle.ide.boot.Launcher[3761] at oracle.toplink.workbench.mappingsmodel.mapping.relational.MWAbstractTableReferenceMapping.subQueryableElements(MWAbstractTableReferenceMapping.java:455)
30/04/09 11:59:07 AM [0x0-0x113113].oracle.ide.boot.Launcher[3761] at oracle.toplink.workbench.mappingsmodel.mapping.relational.MWAbstractTableReferenceMapping.isLeaf(MWAbstractTableReferenceMapping.java:447)
30/04/09 11:59:07 AM [0x0-0x113113].oracle.ide.boot.Launcher[3761] at oracle.toplink.workbench.mappingsplugin.ui.query.relational.QueryableTreeModel.getChild(QueryableTreeModel.java:72)
30/04/09 11:59:07 AM [0x0-0x113113].oracle.ide.boot.Launcher[3761] at oracle.toplink.workbench.uitools.swing.Tree.expandAllNodes(Tree.java:163)

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How to open and edit a TopLink .mwp file?

I can not open the toplink_mappings.mwp file using JDeveloper tool.
How to open and edit a TopLink .mwp file?
Thank you

Hi,
Use JDeveloper to import the mwp project .In Jdeveloper,File->Import->ToplinkWorkbench->Select the .mwp file and can work from JDeveloper in editing the tlmap.xml and session.xml.
Regards,
P.Vinay Kumar

SQL query from toplink expression

Hi,
I have a oracle.toplink.expressions.Expression object with me which has been created using oracle.toplink.expressions.ExpressionBuilder. I want to find its equivalent SQL query(say select emp.empname,emp.empId from employee emp) which will be fired in order to fetch data i.e. find its equivalent Statement/PreparedStatement or anything which will help me obtain the raw SQL statement about to be fired.
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Thanks,
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You can create ReadAllQuery with the expression and get the query's SQL using query.prepareCall() and then query.getSQLString().
James : http://www.eclipselink.org

How to Query Multiple Fields from different Tables using Toplink Expression

Hi,
I am trying to prepare an Oracle Toplink Expression to qurey the multiple columns of different tables. the query as following. Please can anyone help?
SELECT CYCLE.CYCLE_ID,
CYCLE.ASPCUSTOMER_ID,
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ASP.FIRSTNAME || ' ' || ASP.LASTNAME ADDUSERNAME,
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CYCLE.CYCLENUMBER,
CYCLE.DESCRIPTION
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Expression exp = (..............this is the required qurey expression...................)
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You havent given any information on the mapping between Cycle and Asp. I presume there is a one to one mapping between them. Also it appears there is no "WHERE" clause to limit the number of cycles being retrieved. If that is the case then I presume you want to load all cycles in the system.
Thats just a clientSession.readAllObjects(Cycle.class). If you have indirection turned on the Asp should get loaded when you do a cycle.getAsp().
I presume that SQL you posted loads all the columns of CYCLE and ASP. If you are interested in a subset of CYCLE or ASP then you should do a ReportQuery or partial object read.
Hi,
I am trying to prepare an Oracle Toplink Expression
to qurey the multiple columns of different tables.
the query as following. Please can anyone help?
SELECT CYCLE.CYCLE_ID,
CYCLE.ASPCUSTOMER_ID,
CYCLE.FACILITYHEADER_ID,
CYCLE.ADDUSER,
ASP.FIRSTNAME || ' ' || ASP.LASTNAME ADDUSERNAME,
CYCLE.ADDDATE,
CYCLE.LASTUPDATEUSER,
ASP.FIRSTNAME || ' ' || ASP.LASTNAME
LASTUPDATEUSERNAME,
CYCLE.LASTUPDATEDATE,
CYCLE.CYCLENAME,
CYCLE.CYCLENUMBER,
CYCLE.DESCRIPTION
FROM CYCLE,ASPUSER ASP
WHERE CYCLE.ADDUSER = ASP.ASPUSER_ID
and then i want to send that expression to
readAllObjects method as a parameter
Expression exp = (..............this is the required
qurey expression...................)
Vector employees = session.readAllObjects(getClass(),
exp);
thanks,

Editing a calculated expression.

Hi All,
I have requirement of editing a calculated expression, is it possible to do so in MDM?
If possible please let me know.
Regards,
Pramod

Hi Pramos,
My requirement is I want some fields to be dafulted with values when i am creating or importing a
record & i should be able to change atleast one time if required.
In my View, you can use the Assignments for this requirement. You will have to include the assigment in a workflow and then run the workflow for the import of records. SO as soon as the records are imported, the default value for the field for which you have written the assigment will be achieved.
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Just use this field property: For that field, You can make the field property as Writable Once as" YES"/"NO".in console.
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Hope it helps.
Thanks and Regards
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Edited by: Nitin Jain on Aug 5, 2008 6:46 AM

Toplink expression - using complex in clause

We are trying to build an toplink expression in java that would produce the following where clause:
where (settlement_id, retailer_id, site_id, end_read_datetime, txn_datetime)
     in (select settlement_id, retailer_id, site_id, end_read_datetime, max(txn_datetime)
               from tlsa_dim
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                    AND to_date('1/9/2002 00:00:00','mm/dd/yyyy hh24:mi:ss')
               and site_id = '0040473041023'
          group by settlement_id, retailer_id, site_id, end_read_datetime )
We have created a reportquery to represent the internal sub query, but
cannot seem to find how to tell the ExpressionBuilder to get 5 fields together
before the .in(reportQuery).
Anyone have any ideas?
here is our java code
public static ReportQuery getReportQueryForSiteIdAndEffectiveDateRangeAndMaxHistoricalStartDate() throws DataIntegrityException {
ExpressionBuilder aBuilder = new ExpressionBuilder();
ReportQuery query = new ReportQuery(aBuilder);
query.setReferenceClass(Dim.class);
query.addAttribute("settlementId", aBuilder.get("settlementId"));
query.addAttribute("retailerId", aBuilder.get("retailerId"));
query.addAttribute("siteId", aBuilder.get("siteId"));
query.addAttribute("endReadDateTime", aBuilder.get("endReadDateTime"));
query.addMaximum("max-txndatetime", aBuilder.get("historicalStartDate"));
query.setSelectionCriteria(equalsSiteId.and(greaterThanEqualtoEffectiveStart.and(lessThanEqualtoEffectiveEnd)));
query.addGrouping(aBuilder.get("settlementId"));
query.addGrouping(aBuilder.get("retailerId"));
query.addGrouping(aBuilder.get("siteId"));
query.addGrouping(aBuilder.get("endReadDateTime"));
// Vector reports = (Vector) session.executeQuery(query);
return query;
public static Expression forSiteIdAndEffectiveDateRangeAndMaxHistoricalStartDate(String siteId, DateInterval effectiveDateInterval) throws DataIntegrityException {
ExpressionBuilder aBuilder = new ExpressionBuilder();
Expression greaterThanEqualtoEffectiveStart = aBuilder.get("endReadDateTime").greaterThanEqual(effectiveDateInterval.getStartDate());
Expression lessThanEqualtoEffectiveEnd = aBuilder.get("endReadDateTime").lessThanEqual(effectiveDateInterval.getEndDate());
Vector parameterVector = new Vector();
// trying a vector, but no luck
parameterVector.addElement(aBuilder.get("settlementId"));
parameterVector.addElement(aBuilder.get("retailerId"));
parameterVector.addElement(aBuilder.get("siteId"));
parameterVector.addElement(aBuilder.get("endReadDateTime"));
parameterVector.addElement(aBuilder.get("historicalDateRange").get("historicalStartDate"));
Expression inMaxGroup = aBuilder.get(parameterVector).in(getReportQueryForSiteIdAndEffectiveDateRangeAndMaxHistoricalStartDate());
Expression equalsSiteid = forSiteId(aBuilder, aSiteId);
return equalsSiteid.and(inMaxGroup);
public static Expression forSiteId(ExpressionBuilder aBuilder, String aSiteId){
Expression equalsSiteId = aBuilder.get("siteId").equalsIgnoreCase(aSiteId);
return equalsSiteId;

There is no expression support for this. You'll have to use SQL.
Here is a thread of an example using Having with report queries.
Re: How to build SQL Where clause "Having" using Toplink ExpressionBuilder
- Don

How to SQL intersect using Toplink expressions

I try to do this SQL intersect
SELECT part_k FROM ATTR_VALUE
where commodity_n ='dab badge' and attribute_n='Badge Width' and attribute_value_x='10'
INTERSECT
SELECT part_k FROM ATTR_VALUE
where commodity_n='dab badge' and attribute_n='Brand Logo' and attribute_value_x='Jaguar'
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Right, TopLink doesn't have an Intersect operator. If it did, you might still get the same problem unless you are using a report query to return only the "part_k" value instead of an object since attribute_n cannot have a value of both 'Badge Width' and 'Brand Logo' at the same time.
You can get the part_k values or the objects from the ATTR_VALUE
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subquery.addAttribute("partk");
Expression myExpression = e1.and( builder.get("partk").in(subquery) );Regards,
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ADF BC equivalent of TopLink Expressions

Hi,
I'm looking for equivalent of TopLink Expressions in ADF BC world.
Does such thing exist ?
http://download-uk.oracle.com/otn_hosted_doc/ias/preview/web.1013/b13593/expres.htm

Hi,
the link you provide doesn't exist. I guess you mean http://www.oracle.com/technology/products/ias/toplink/doc/1013/main/_html/expres.htm
ADF BC works similar but does not have object oriented expressions that you use. E.g. to filter a query you use ViewCriteria or bind variables in the query itself
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GET_UTC_DATE() and GET_UTC_TIMESTAMP() with Toplink Expression

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Roland.

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Hi,
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x

Edit a TopLink Expression

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