Data service (DB adapter) returns XML with missing collection's content

Question

Hello.
I am facing problem with DB adapter connected to MySQL database.
When I use select from 1-2 tables (connected by master-detail relationship) adapter works fine.
When I use more than 2 tables adapter returns only master table and empty detail collections.
This is example of 2 tables (master-detail) response
<BasketItemCollection>
<BasketItem>
<basketItemId>234</basketItemId>
<loggedUserId>126</loggedUserId>
<itemTitle>itemTitle</itemTitle>
<itemPartNo/>
<itemPrice>301.26</itemPrice>
<itemVat>0.0</itemVat>
<itemQty>1</itemQty>
<itemNote/>
<dateInsert>2009-10-08T16:07:30.000+02:00</dateInsert>
<basketInvoiceId>44</basketInvoiceId>
<documents>
<docId>560</docId>
<dateCreated>2011-08-23T09:14:52.000+02:00</dateCreated>
<available>false</available>
<passwordProtected xsi:nil="true"/>
</documents>
</BasketItem>
</BasketItemCollection>
This is example of response after adding 1 master table
<BasketInvoiceCollection>
<BasketInvoice>
<basketInvoiceId>44</basketInvoiceId>
<browserId>371</browserId>
<loggedUserId>126</loggedUserId>
<createDate>2009-10-08T16:08:17.000+02:00</createDate>
<statusId>7</statusId>
<deliveryCompany xsi:nil="true"/>
<deliveryName>Alena Molnarova</deliveryName>
<deliveryStreet>fgh</deliveryStreet>
<deliveryCity>fgh</deliveryCity>
<deliveryZip>9054</deliveryZip>
<deliveryCountry>fghfgh</deliveryCountry>
<internalInvoiceId xsi:nil="true"/>
<userNote>fghfgh</userNote>
<userLng>sk</userLng>
<paymentMethod>cash_on_delivery</paymentMethod>
<deliveryMethod>Prevzatie tovaru osobne</deliveryMethod>
<htmlCode xsi:nil="true"/>
<currency>skk</currency>
<basketItemCollection/>
</BasketInvoice>
</BasketInvoiceCollection>
basketItemCollection is here empty.
Where can be a problem hidden?
Thanks in advance for any help

Answer 1

Hi.
JDeveloper use aliase names for tables by default so aliases t0, t1, t3 are used for tables basketinvoice, basketitem, documents.
I think there is some connection to table. Collection of basketinvoicepayments table is missing when 3 tables select and 2 tables select too.
Table basketinvoicepayments is child table and it's element is missing even when relationship is 1:M or 1:1 (Foreign Key on Child table).