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https://issues.apache.org/jira/browse/DERBY-4888?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Knut Anders Hatlen updated DERBY-4888:
--------------------------------------
Attachment: boolean.diff
The problem appears to be that the client thinks 10.6 sends boolean meta-data
values as java.lang.Boolean objects because of a typo in this method in
client.am.DatabaseMetaData:
final public boolean serverSupportsBooleanValues() {
return supportsUDTs_;
}
It should return supportsBooleanValues_ (true for server >= 10.7) instead of
supportsUDTs_ (true for server >= 10.6). The attached patch makes the
ClassCastException go away for me.
> ClassCastException when calling boolean meta-data functions with 10.7 client
> against 10.6 server
> ------------------------------------------------------------------------------------------------
>
> Key: DERBY-4888
> URL: https://issues.apache.org/jira/browse/DERBY-4888
> Project: Derby
> Issue Type: Bug
> Components: JDBC, Network Client
> Affects Versions: 10.7.1.0
> Reporter: Knut Anders Hatlen
> Assignee: Knut Anders Hatlen
> Attachments: boolean.diff
>
>
> I noticed that DESCRIBE didn't work when I tried to connect to a 10.6 server
> with ij/client driver at version 10.7.
> ij> describe t;
> JAVA ERROR: java.lang.ClassCastException: java.lang.Integer cannot be cast to
> java.lang.Boolean
> java.lang.ClassCastException: java.lang.Integer cannot be cast to
> java.lang.Boolean
> at
> org.apache.derby.client.am.DatabaseMetaData.getMetaDataInfoBoolean(DatabaseMetaData.java:2401)
> at
> org.apache.derby.client.am.DatabaseMetaData.storesLowerCaseIdentifiers(DatabaseMetaData.java:191)
> at org.apache.derby.impl.tools.ij.ij.caIdentifier(ij.java:3040)
> at org.apache.derby.impl.tools.ij.ij.DescTableStatement(ij.java:1624)
> at org.apache.derby.impl.tools.ij.ij.ijStatement(ij.java:1121)
> at
> org.apache.derby.impl.tools.ij.utilMain.runScriptGuts(utilMain.java:341)
> at org.apache.derby.impl.tools.ij.utilMain.go(utilMain.java:261)
> at org.apache.derby.impl.tools.ij.Main.go(Main.java:229)
> at org.apache.derby.impl.tools.ij.Main.mainCore(Main.java:184)
> at org.apache.derby.impl.tools.ij.Main.main(Main.java:75)
> at org.apache.derby.tools.ij.main(ij.java:59)
> at org.apache.derby.iapi.tools.run.main(run.java:53)
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