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https://issues.apache.org/jira/browse/DERBY-4970?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12981318#action_12981318
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Dag H. Wanvik commented on DERBY-4970:
--------------------------------------
Looks good to me. Verified that test fails without the fix. +1
> ClassCastException from getBlob() on string parameter
> -----------------------------------------------------
>
> Key: DERBY-4970
> URL: https://issues.apache.org/jira/browse/DERBY-4970
> Project: Derby
> Issue Type: Bug
> Components: JDBC
> Affects Versions: 10.7.1.1
> Reporter: Knut Anders Hatlen
> Assignee: Knut Anders Hatlen
> Fix For: 10.8.0.0
>
> Attachments: d4970-withTests.diff, d4970.diff, Test.java
>
>
> If you call getBlob() on a string parameter in a CallableStatement, you'll
> get a ClassCastException. We should get a proper SQLException.
> Exception in thread "main" java.lang.ClassCastException: java.lang.String
> cannot be cast to java.sql.Blob
> at
> org.apache.derby.impl.jdbc.EmbedCallableStatement.getBlob(EmbedCallableStatement.java:580)
> at Test.main(Test.java:13)
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