ClassCastException from getBlob() on string parameter
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                 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


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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