[DERBY-1710] Unchecked casts from SQLException to EmbedSQLException cause ClassCastException in NetworkServerControlImpl when running Java SE 6

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 10.2.1.6
• Fix Version/s: 10.2.1.6
• Component/s: Network Server
• Environment: Java SE 6 (beta)
• Urgency: Normal
• Assignee: Knut Anders Hatlen
• Reporter: Knut Anders Hatlen
• Created: 17/Aug/06 06:40
• Updated: 18/Aug/06 06:05
• Resolved: 18/Aug/06 06:05

Description

Since Derby doesn't raise EmbedSQLExceptions when running Java SE 6 or later, casts from SQLException to EmbedSQLException fail with a ClassCastException.

To reproduce, start a network server with Java SE 6, and with derby.drda.debug enabled:
java -Dderby.drda.debug=true org.apache.derby.drda.NetworkServerControl start

In another terminal, stop the server with this command:
java org.apache.derby.drda.NetworkServerControl shutdown

When the server stops, it will print

java.sql.SQLException cannot be cast to org.apache.derby.impl.jdbc.EmbedSQLException
java.lang.ClassCastException: java.sql.SQLException cannot be cast to org.apache.derby.impl.jdbc.EmbedSQLException
at org.apache.derby.impl.drda.NetworkServerControlImpl.blockingStart(NetworkServerControlImpl.java:665)
at org.apache.derby.impl.drda.NetworkServerControlImpl.executeWork(NetworkServerControlImpl.java:1739)
at org.apache.derby.drda.NetworkServerControl.main(NetworkServerControl.java:239)