[ http://nagoya.apache.org/jira/browse/DERBY-21?page=comments#action_55668
]
Amit Handa commented on DERBY-21:
---------------------------------
The EmbeddedResultSetMetaData.getColumnClassName
calls TypeId.getResultSetMetaDataTypeName() as shown :-
Class Name :/java/engine/org/apache/derby/iapi/types/TypeId.java
Method : getResultSetMetaDataTypeName
public String getResultSetMetaDataTypeName()
{
if (BLOB_ID == this){
return "java.sql.Blob";
}
if (CLOB_ID == this){
return "java.sql.Clob";
}
if (NCLOB_ID == this) {
return "java.sql.Clob";
}
return getCorrespondingJavaTypeName();
}
Rather it should be
public String getResultSetMetaDataTypeName()
{
if (BLOB_ID.equals(this)){
return "java.sql.Blob";
}
if (CLOB_ID.equals(this)){
return "java.sql.Clob";
}
if (NCLOB_ID.equals(this)) {
return "java.sql.Clob";
}
}
> ResultsetMetaData.getColumnClassName() for CLOB and BLOB datatypes is
> incorrect.
> --------------------------------------------------------------------------------
>
> Key: DERBY-21
> URL: http://nagoya.apache.org/jira/browse/DERBY-21
> Project: Derby
> Type: Bug
> Components: JDBC
> Versions: 10.0.2.0
> Reporter: Ramandeep Kaur
> Priority: Minor
>
> Opening this bug on behalf of Daniel Debrunner.
> -------------------------------------------------------------
> ResultsetMetaData.getColumnClassName() for CLOB and BLOB
> datatypes is incorrect.
> BLOB: CLOB:
> jcc: java.sql.Blob java.sql.Clob
> Derby: byte[] java.lang.String
> Derby's embedded JDBC driver returns the incorrect class
> names for BLOB and CLOB columns in a ResultSet when using the
> ResultSetMetaData.getColumnClassName() method. Note that the
> ResultSet.getObject() method calls are not currently supported
> for BLOB and CLOB.
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