public boolean supportsConvert()

in src/main/java/org/mariadb/jdbc/MariaDbDatabaseMetaData.java [1410:1555]
140 lines of code
105 McCabe index (conditional complexity)

  public boolean supportsConvert(int fromType, int toType) {
    switch (fromType) {
      case Types.TINYINT:
      case Types.SMALLINT:
      case Types.INTEGER:
      case Types.BIGINT:
      case Types.REAL:
      case Types.FLOAT:
      case Types.DECIMAL:
      case Types.NUMERIC:
      case Types.DOUBLE:
      case Types.BIT:
      case Types.BOOLEAN:
        switch (toType) {
          case Types.TINYINT:
          case Types.SMALLINT:
          case Types.INTEGER:
          case Types.BIGINT:
          case Types.REAL:
          case Types.FLOAT:
          case Types.DECIMAL:
          case Types.NUMERIC:
          case Types.DOUBLE:
          case Types.BIT:
          case Types.BOOLEAN:
          case Types.CHAR:
          case Types.VARCHAR:
          case Types.LONGVARCHAR:
          case Types.BINARY:
          case Types.VARBINARY:
          case Types.LONGVARBINARY:
            return true;
          default:
            return false;
        }

      case Types.BLOB:
        switch (toType) {
          case Types.BINARY:
          case Types.VARBINARY:
          case Types.LONGVARBINARY:
          case Types.CHAR:
          case Types.VARCHAR:
          case Types.LONGVARCHAR:
          case Types.TINYINT:
          case Types.SMALLINT:
          case Types.INTEGER:
          case Types.BIGINT:
          case Types.REAL:
          case Types.FLOAT:
          case Types.DECIMAL:
          case Types.NUMERIC:
          case Types.DOUBLE:
          case Types.BIT:
          case Types.BOOLEAN:
            return true;
          default:
            return false;
        }

      case Types.CHAR:
      case Types.CLOB:
      case Types.VARCHAR:
      case Types.LONGVARCHAR:
      case Types.BINARY:
      case Types.VARBINARY:
      case Types.LONGVARBINARY:
        switch (toType) {
          case Types.BIT:
          case Types.TINYINT:
          case Types.SMALLINT:
          case Types.INTEGER:
          case Types.BIGINT:
          case Types.FLOAT:
          case Types.REAL:
          case Types.DOUBLE:
          case Types.NUMERIC:
          case Types.DECIMAL:
          case Types.CHAR:
          case Types.VARCHAR:
          case Types.LONGVARCHAR:
          case Types.BINARY:
          case Types.VARBINARY:
          case Types.LONGVARBINARY:
          case Types.DATE:
          case Types.TIME:
          case Types.TIMESTAMP:
          case Types.BLOB:
          case Types.CLOB:
          case Types.BOOLEAN:
          case Types.NCHAR:
          case Types.LONGNVARCHAR:
          case Types.NCLOB:
            return true;
          default:
            return false;
        }

      case Types.DATE:
        switch (toType) {
          case Types.DATE:
          case Types.CHAR:
          case Types.VARCHAR:
          case Types.LONGVARCHAR:
          case Types.BINARY:
          case Types.VARBINARY:
          case Types.LONGVARBINARY:
            return true;

          default:
            return false;
        }

      case Types.TIME:
        switch (toType) {
          case Types.TIME:
          case Types.CHAR:
          case Types.VARCHAR:
          case Types.LONGVARCHAR:
          case Types.BINARY:
          case Types.VARBINARY:
          case Types.LONGVARBINARY:
            return true;
          default:
            return false;
        }

      case Types.TIMESTAMP:
        switch (toType) {
          case Types.TIMESTAMP:
          case Types.CHAR:
          case Types.VARCHAR:
          case Types.LONGVARCHAR:
          case Types.BINARY:
          case Types.VARBINARY:
          case Types.LONGVARBINARY:
          case Types.TIME:
          case Types.DATE:
            return true;
          default:
            return false;
        }
      default:
        return false;
    }
  }