empire-db/src/main/java/org/apache/empire/dbms/derby/DBMSHandlerDerby.java [240:297]:
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           case VARCHAR:
           case CHAR:
                return "CAST(? AS CHAR)";
           case BLOB:
                return "CAST(? AS BLOB)";
           // Unknown Type                                       
           default:
                log.error("getConvertPhrase: unknown type " + destType);
                return "?";
        }
    }
    
    /**
     * @see DBMSHandlerBase#getNextSequenceValue(DBDatabase, String, int, Connection)
     */
    @Override
    public Object getNextSequenceValue(DBDatabase db, String seqName, int minValue, Connection conn)
    {   //Use Oracle Sequences
        if (useSequenceTable)
        {   // Use a sequence Table to generate Sequences
            DBTable t = db.getTable(sequenceTableName);
            return ((DBSeqTable)t).getNextValue(seqName, minValue, conn);
        }
        else
        {   // Post Detection
            return null;
        }
    }

    /**
     * @see DBMSHandlerBase#getNextSequenceValueExpr(DBTableColumn col)
     */
    @Override
    public DBColumnExpr getNextSequenceValueExpr(DBTableColumn column)
    {
        throw new NotSupportedException(this, "getNextSequenceValueExpr");
    }

    /**
     * Overridden. Returns a timestamp that is used for record updates created by the database server.
     * 
     * @return the current date and time of the database server.
     */
    @Override
    public java.sql.Timestamp getUpdateTimestamp(Connection conn)
    {
        // Default implementation
        GregorianCalendar cal = new GregorianCalendar();
        return new java.sql.Timestamp(cal.getTimeInMillis());
    }

    /**
     * @see DBMSHandler#getDDLScript(DDLActionType, DBObject, DBSQLScript)  
     */
    @Override
    public void getDDLScript(DDLActionType type, DBObject dbo, DBSQLScript script)
    {
        if (ddlGenerator==null)
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empire-db/src/main/java/org/apache/empire/dbms/h2/DBMSHandlerH2.java [316:373]:
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           case VARCHAR:
           case CHAR:
                return "CAST(? AS CHAR)";
           case BLOB:
                return "CAST(? AS BLOB)";
           // Unknown Type                                       
           default:
                log.error("getConvertPhrase: unknown type " + destType);
                return "?";
        }
    }
    
    /**
     * @see DBMSHandlerBase#getNextSequenceValue(DBDatabase, String, int, Connection)
     */
    @Override
    public Object getNextSequenceValue(DBDatabase db, String seqName, int minValue, Connection conn)
    {   //Use Oracle Sequences
        if (useSequenceTable)
        {   // Use a sequence Table to generate Sequences
            DBTable t = db.getTable(sequenceTableName);
            return ((DBSeqTable)t).getNextValue(seqName, minValue, conn);
        }
        else
        {   // Post Detection
            return null;
        }
    }

    /**
     * @see DBMSHandlerBase#getNextSequenceValueExpr(DBTableColumn col)
     */
    @Override
    public DBColumnExpr getNextSequenceValueExpr(DBTableColumn column)
    {
        throw new NotSupportedException(this, "getNextSequenceValueExpr");
    }

    /**
     * Overridden. Returns a timestamp that is used for record updates created by the database server.
     * 
     * @return the current date and time of the database server.
     */
    @Override
    public java.sql.Timestamp getUpdateTimestamp(Connection conn)
    {
        // Default implementation
        GregorianCalendar cal = new GregorianCalendar();
        return new java.sql.Timestamp(cal.getTimeInMillis());
    }

    /**
     * @see DBMSHandler#getDDLScript(DDLActionType, DBObject, DBSQLScript)  
     */
    @Override
    public void getDDLScript(DDLActionType type, DBObject dbo, DBSQLScript script)
    {
        if (ddlGenerator==null)
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