Hi Jakob
Thanks for that but my generated SQL does not qualify the columns I was
selecting and hence
I get a non unique name for the ID column reported by SQL Server. One
difference between the example you give and
my example is that my criteria filters on a couple of values in a collection
attribute of the class I am querying.
E.g. to extend the example you give:
public void testReportPathExpressionForExtents()
{
ArrayList list = new java.util.ArrayList();
Criteria crit = new Criteria();
crit.addEqualTo("groupId", new Integer(5));
crit.addEqualTo("allArticlesInGroup.articleName", "some name");
ReportQueryByCriteria q =
QueryFactory.newReportQuery(ProductGroup.class, crit, true);
q.setColumns(new String[]{"groupId", "groupName",
"allArticlesInGroup.articleId", "allArticlesInGroup.articleName"});
Iterator iter = broker.getReportQueryIteratorByQuery(q);
while (iter.hasNext())
Additionally, is ProductGroup an extent? The class I query is the top level
of an extent.
I will make a change to the test you give so it looks like my query and then
see what results I get.
I will also send you the generated SQL.
Regards & thanks
Mark
-----Original Message-----
From: Jakob Braeuchi [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, February 19, 2003 4:48 PM
To: OJB Users List
Subject: Re: Report queries on extents
hi mark,
yes, report queries are extent aware. the method below is taken from the
testcase QueryTest and it produces the query shown further down.
public void testReportPathExpressionForExtents()
{
ArrayList list = new java.util.ArrayList();
Criteria crit = new Criteria();
crit.addEqualTo("groupId", new Integer(5));
ReportQueryByCriteria q =
QueryFactory.newReportQuery(ProductGroup.class, crit, true);
q.setColumns(new String[]{"groupId", "groupName",
"allArticlesInGroup.articleId", "allArticlesInGroup.articleName"});
Iterator iter = broker.getReportQueryIteratorByQuery(q);
while (iter.hasNext())
{
list.add(iter.next());
}
// 7 Articles, 2 Books, 3 Cds
assertEquals("check size", list.size(), 7);
}
SELECT DISTINCT
A0.Kategorie_Nr,A0.KategorieName,A1.Artikel_Nr,A1.Artikelname FROM
Kategorien A0 LEFT OUTER JOIN Artikel A1 ON
A0.Kategorie_Nr=A1.Kategorie_Nr LEFT OUTER JOIN BOOKS A1E0 ON
A0.Kategorie_Nr=A1E0.Kategorie_Nr LEFT OUTER JOIN CDS A1E1 ON
A0.Kategorie_Nr=A1E1.Kategorie_Nr WHERE A0.Kategorie_Nr = '5'
hth
jakob
Mark Rowell wrote:
>Hi
>
>I was wondering if report queries on extents work where I am selecting out
>a/some column(s) from a table
>related to the extent classes. A concrete example may help (!)
>
>I have an extent class called Bond with concrete implementations called
>FixedCouponBond and FRN.
>There is a 1 to n relationship a single Bond and the priceDetails class
>(which is concrete). In my
>repository_user.xml file they mappings are setup as follows (I only show
>themapping for the FixedCouponBond class
>as it is identical for the FRN class)
>
> <class-descriptor
> class="com.credittrade.instruments.securities.BBGBondModel"
>
> table="Bonds"
> >
> <field-descriptor id="1"
> name="id"
> column="ID"
> jdbc-type="INTEGER"
> primarykey="true"
> autoincrement="true"
> />
> etc
> <collection-descriptor
> name="priceDetails"
> element-class-ref="com.credittrade.market.PriceDetail"
> auto-retrieve="true"
> auto-update="false"
> auto-delete="false"
> proxy="true"
> >
> <inverse-foreignkey field-id-ref="2"/>
> </collection-descriptor>
> etc
> </class-descriptor>
>
>priceDetail is mapped as follows:
>
> <class-descriptor
> class="com.credittrade.market.PriceDetail"
> table="PriceDetails">
> <field-descriptor id="1"
> name="id"
> column="ID"
> jdbc-type="INTEGER"
> primarykey="true"
> autoincrement="true"
> />
> <field-descriptor id="2"
> name="instrumentID"
> column="InstrumentID"
> jdbc-type="INTEGER"
> />
> <field-descriptor id="3"
> name="priceValueType"
> column="typeID"
> etc...
> </class-descriptor>
>
>
>I run the following report query to retrieve the ISIN field from the
>FixedCouponBond and the
>ID of the associated price details. I do this using the OJB API thus:
>
>// Java snippet
> Criteria criteria = new Criteria();
> criteria.addEqualTo("priceDetails.PriceSource", ps.getLabel());
> criteria.addEqualTo("priceDetails.TypeID",
>PriceValueType.price.toString());
> criteria.addEqualTo("priceDetails.PriceTypeID",
>PriceType.market.toString());
> criteria.addIn("priceDetails.QuoteTypeID", Arrays.asList( new
>String[]{
> QuoteType.bid.toString(),
> QuoteType.offer.toString(),
> QuoteType.high.toString(),
> QuoteType.low.toString()}));
> criteria.addIn("ISIN", isins);
>
> Iterator iter = broker.getReportQueryIteratorByQuery(
> QueryFactory.newReportQuery(
> Bond.class,
> new String[]{"ISIN", "priceDetails.ID",
>"priceDetails.QuoteTypeID"},
> criteria,
> false));
>
>Note in the method call to newReportQuery I ask for the ISIN field from the
>Bond class (no qualifier as it is the
>class in the query), and the ID and QuoteTypeID columns from the related
>priceDetails instances.
>
>The problem I get is that the generated SQL strips out the identifiers and
>because I have an ID column on my
>Bond tables I get a SQL error complaining that ID is not a unique column
>name.
>
>I do this sort of report query elsewhere, on concrete classes directly and
>it works -- hence I assume it is a problem with
>the SQL generator (?) for extents.
>
>I can get round it by specifying A1 as the qualifier for the ID and
>QuoteTypeID columns (as this, I noticed, is the
>table alias used by the SQL generator for the PriceDetails table.
>
>So, the questions I have are:
>
>(a) is this a bug, or
>(b) am Idoing something wrong...
>
>Regards,
>
>Mark Rowel
>
>----------------------------------------------------------------
>Mark Rowell
>CreditTrade
>
>T: +44 (020) 7400 5078
>M: mailto:[EMAIL PROTECTED]
>
>CreditTrade Limited is regulated by the FSA. (c) CreditTrade 2002. All
rights reserved. The information and data contained in this email is
provided for the information purposes of the addressee only and should not
be reproduced and/or distributed to any other person. It is provided without
any warranty whatsoever and unless stated otherwise consists purely of
indicative market prices and other information.
>
>Any opinion or comments expressed or assumption made in association with
the data or information provided in this email is a reflection of
CreditTrades judgement at the time of compiling the data and is subject to
change. CreditTrade hereby makes no representation and accepts no
responsibility or liability as to the completeness or accuracy of this
email.
>
>The content of this email is not intended as an offer or solicitation for,
or recommendation of, the purchase or sale of any financial instrument, or
as an official confirmation of any transaction, and should not be construed
as investment advice.
>
>---------------------------------------------------------------------
>To unsubscribe, e-mail: [EMAIL PROTECTED]
>For additional commands, e-mail: [EMAIL PROTECTED]
>
>
>
>
---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
CreditTrade Limited is regulated by the FSA. (c) CreditTrade 2002. All rights
reserved. The information and data contained in this email is provided for the
information purposes of the addressee only and should not be reproduced and/or
distributed to any other person. It is provided without any warranty whatsoever and
unless stated otherwise consists purely of indicative market prices and other
information.
Any opinion or comments expressed or assumption made in association with the data or
information provided in this email is a reflection of CreditTrades judgement at the
time of compiling the data and is subject to change. CreditTrade hereby makes no
representation and accepts no responsibility or liability as to the completeness or
accuracy of this email.
The content of this email is not intended as an offer or solicitation for, or
recommendation of, the purchase or sale of any financial instrument, or as an official
confirmation of any transaction, and should not be construed as investment advice.
---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
