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  1. MariaDB Server
  2. MDEV-34137

Implement the GIS function ST_Validate

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    Description

      This function takes as input a geometry and verifies that:

      If the input is valid return it, else it returns NULL. The use case of this function is to filter out invalid geometry data.

      The following exceptions apply:

      • If an input Polygon or MultiPolygon has clockwise rings, those rings are reversed before checking for validity. The value with the reversed rings is returned if the geometry is valid.
      • The only valid empty geometry is represented as an empty geometry collection value. ST_Validate() returns it directly without further checks in this case.
      • If the geometry has a geographic SRS with a longitude or latitude that is out of range, an error occurs:
        • If a longitude value is not in the range (−180, 180], an ER_GEOMETRY_PARAM_LONGITUDE_OUT_OF_RANGE error occurs.
        • If a latitude value is not in the range [−90, 90], an ER_GEOMETRY_PARAM_LATITUDE_OUT_OF_RANGE error occurs.

      This function has to be compatible with the MySQL function ST_Validate and for this reason, part of this card is taken from https://dev.mysql.com/doc/refman/8.0/en/spatial-convenience-functions.html .

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          causes

          Bug - A problem which impairs or prevents the functions of the product. MDEV-35103 CREATE TABLE AS SELECT ST_VALIDATE creates a column with datatype point, not geometry

          • Critical - Crashes, loss of data, severe memory leak.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. MDEV-35126 Wrong results from st_isvalid or st_validate function, while using multipolygon

          • Critical - Crashes, loss of data, severe memory leak.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. MDEV-36042 Assertion `str_length + (uint32) (4) <= Alloced_length' failed in Binary_string::q_append after SELECT ST_VALIDATE...

          • Critical - Crashes, loss of data, severe memory leak.
          • Closed
          is part of

          Epic - Created by Jira Software - do not edit or delete. Issue type for a big user story that needs to be broken down. MDEV-17398 Implement Geographic functions available in MySQL 8.0

          • Major - Major loss of function.
          • Closed

          Task - A task that needs to be done. MDEV-34120 GSoC 2024, Spatial (GIS) functions in MariaDB

          • Major - Major loss of function.
          • Closed
          relates to

          Bug - A problem which impairs or prevents the functions of the product. MDEV-35062 Assertion `str_length + (uint32) (4) <= Alloced_length' failed in Binary_string::q_append

          • Critical - Crashes, loss of data, severe memory leak.
          • Closed

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              Gosselin Dave Gosselin
              Stefano Petrilli Stefano Petrilli
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