[TUSCANY-740] Misleading exception when SDO does not find definition for specific column

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: Java-SCA-M2
• Fix Version/s: Java-SCA-M2
• Component/s: Java SCA Demos, Java SDO Implementation
• Assignee: Brent Daniel
• Reporter: Luciano Resende
• Created: 21/Sep/06 01:13
• Updated: 19/Sep/10 11:23
• Resolved: 21/Sep/06 15:12

Description

While working on Bigbank, was getting the following exception :

Exception in thread "main" java.lang.NullPointerException
at org.eclipse.emf.ecore.impl.BasicEObjectImpl.eDerivedStructuralFeatureID(BasicEObjectImpl.java:1072)
at org.eclipse.emf.ecore.impl.BasicEObjectImpl.eSet (BasicEObjectImpl.java:650)
at org.apache.tuscany.sdo.impl.DataObjectImpl.set(DataObjectImpl.java:140)
at org.apache.tuscany.das.rdb.graphbuilder.impl.DataObjectMaker.createAndAddDataObject(DataObjectMaker.java :90)
at org.apache.tuscany.das.rdb.graphbuilder.impl.ResultSetProcessor.addRowToGraph(ResultSetProcessor.java:126)
at org.apache.tuscany.das.rdb.graphbuilder.impl.ResultSetProcessor.processResultSet(ResultSetProcessor.java :97)
at org.apache.tuscany.das.rdb.graphbuilder.impl.ResultSetProcessor.processResults(ResultSetProcessor.java:81)
at org.apache.tuscany.das.rdb.impl.ReadCommandImpl.buildGraph(ReadCommandImpl.java:92)
at org.apache.tuscany.das.rdb.impl.ReadCommandImpl.executeQuery(ReadCommandImpl.java:61)
at bigbank.account.services.accountdb.AccountDBInit.testStrockPurchaseThroughDAS(AccountDBInit.java:271)
at bigbank.account.services.accountdb.AccountDBInit.main (AccountDBInit.java:466)

This was due to a mismatch between data returned from the query and the
generated DataObject model. The query in this case is doing "select *
from stocks", which will return columns ID, Symbol, Quantity,
purchasePrice, purchaseDate, and purchaseLotNumber. The wsdl used to
generated the SDO model doesn't have an ID column. Looking at
AccountDBInit, it looks like ID is supposed to identify a customer.
Nothing in the StockSummary type in the wsdl looks like it corresponds
to this.

Regardless, we need to return a meaningful exception for this rather
than the NPE from SDO.

See discussion thread for details : http://www.mail-archive.com/tuscany-dev%40ws.apache.org/msg08177.html