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  1. MariaDB Server
  2. MDEV-20764

Add MariaDB_FUNCTION_COLLECTION_PLUGIN

Details

    Description

      A function collection plugin will provide an array of Create_item's.

      A function collection plugin data will have a structure approximately like this:

      struct st_mariadb_function_collection
      		 
      {
      		 
        int m_interface_version;
      		 
        HASH m_hash;
      		 
        const Native_func_registry *m_elements;
      		 
        size_t m_count; // The number of elements in m_elements
      		 
      };

      m_elements will point to a static array of Native_func_registry's, like the one defined in item_create.cc:

      static Native_func_registry func_array[] =
      		 
      {
      		 
        { { STRING_WITH_LEN("FUNC1") }, BUILDER(Create_func_func1)},
      		 
        { { STRING_WITH_LEN("FUNC2") }, BUILDER(Create_func_func2)},
      		 
        { { STRING_WITH_LEN("FUNC3") }, BUILDER(Create_func_func3)},
      		 
        { { STRING_WITH_LEN("FUNC4") }, BUILDER(Create_func_func4)},
      		 
        { { STRING_WITH_LEN("FUNC5") }, BUILDER(Create_func_func5)},
      		 
        ...
      		 
      };

      When initializing a function collection plugin, the server will populate m_hash.
      When de-initializing a function collection plugin, the server will free m_hash.

      Function collection plugins will allow to:

      • Split out optional SQL functions into seperate plugins (e.g. GIS, XML, INET functions)
      • Remove conditional compilation from existing server code.
      • Provide a better interface (than the existing limited UDF API), which will support:
        • character sets and collations
        • user defined data types

      Attachments

        Issue Links

          blocks

          Task - A task that needs to be done. MDEV-274 The data type for IPv6/IPv4 addresses in MariaDB

          • Major - Major loss of function.
          • Closed

          Epic - Created by Jira Software - do not edit or delete. Issue type for a big user story that needs to be broken down. MDEV-4912 Data type plugin API version 1

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Closed

          Task - A task that needs to be done. MDEV-20768 Turn INET functions into a function collection plugin

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

          Task - A task that needs to be done. MDEV-5315 ItemFunc plugins for server

          • Major - Major loss of function.
          • Closed

          Task - A task that needs to be done. MDEV-20837 Add MariaDB_FUNCTION_PLUGIN

          • Major - Major loss of function.
          • Closed

          Activity

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            bar Alexander Barkov created issue -
            bar Alexander Barkov made changes -
            Field Original Value New Value
            bar Alexander Barkov made changes -
            bar Alexander Barkov made changes -
            bar Alexander Barkov made changes -
            Description A function collection plugin will provide an array of Create_item's.

            A function collection plugin data will have a structure approximately like this:
            {code:sql}
            struct st_mariadb_function_collection
            {
              int m_interface_version;
              HASH m_hash;
              const Native_func_registry *m_elements;
              size_t m_count; // The number of elements in m_elements
            };
            {code}

            m_elements will point to a static array of Native_func_registry's, like the one defined in item_create.cc:

            {code:cpp}
            static Native_func_registry func_array[] =
            {
              { { STRING_WITH_LEN("FUNC1") }, BUILDER(Create_func_func1)},
              { { STRING_WITH_LEN("FUNC2") }, BUILDER(Create_func_func2)},
              { { STRING_WITH_LEN("FUNC3") }, BUILDER(Create_func_func3)},
              { { STRING_WITH_LEN("FUNC4") }, BUILDER(Create_func_func4)},
              { { STRING_WITH_LEN("FUNC5") }, BUILDER(Create_func_func5)},
              ...
            };
            {code}

            When initializing a function collection plugin, the server will populate m_hash.
            When de-initializing a function collection plugin, the server will free m_hash.

            Function collection plugins will allow to:
            - Split out optional SQL functions into seperate plugins (e.g. GIS, XML, INET functions)
            - Remove conditional compilation from existing server code.
            - Provide a better interface (than the existing limited UDF API), which will support:
            -- character sets and collations
            -- user defined data types

            		A function collection plugin will provide an array of Create_item's.

            A function collection plugin data will have a structure approximately like this:
            {code:cpp}
            struct st_mariadb_function_collection
            {
              int m_interface_version;
              HASH m_hash;
              const Native_func_registry *m_elements;
              size_t m_count; // The number of elements in m_elements
            };
            {code}

            m_elements will point to a static array of Native_func_registry's, like the one defined in item_create.cc:

            {code:cpp}
            static Native_func_registry func_array[] =
            {
              { { STRING_WITH_LEN("FUNC1") }, BUILDER(Create_func_func1)},
              { { STRING_WITH_LEN("FUNC2") }, BUILDER(Create_func_func2)},
              { { STRING_WITH_LEN("FUNC3") }, BUILDER(Create_func_func3)},
              { { STRING_WITH_LEN("FUNC4") }, BUILDER(Create_func_func4)},
              { { STRING_WITH_LEN("FUNC5") }, BUILDER(Create_func_func5)},
              ...
            };
            {code}

            When initializing a function collection plugin, the server will populate m_hash.
            When de-initializing a function collection plugin, the server will free m_hash.

            Function collection plugins will allow to:
            - Split out optional SQL functions into seperate plugins (e.g. GIS, XML, INET functions)
            - Remove conditional compilation from existing server code.
            - Provide a better interface (than the existing limited UDF API), which will support:
            -- character sets and collations
            -- user defined data types

            bar Alexander Barkov made changes -
            Fix Version/s 10.5.0 [ 23709 ]
            Fix Version/s 10.5 [ 23123 ]
            Resolution Fixed [ 1 ]
            Status Open [ 1 ] Closed [ 6 ]
            bar Alexander Barkov made changes -
            bar Alexander Barkov made changes -
            bar Alexander Barkov made changes -
            bar Alexander Barkov made changes -
            serg Sergei Golubchik made changes -
            Workflow MariaDB v3 [ 100218 ] MariaDB v4 [ 134111 ]

            People

              bar Alexander Barkov
              bar Alexander Barkov
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              Dates

                Created:
                Updated:
                Resolved:

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