private boolean isBlobColumn(int columnIndex, ResultSetMetaData metaData) throws SQLException {
    int columnType = metaData.getColumnType(columnIndex);
    return Types.BLOB == columnType;
  }
@throws SQLException if the column value get fails
geode-connectors/src/main/java/org/apache/geode/connectors/jdbc/internal/SqlToPdxInstance.java