Errored when inserting array value of custom datatype in binary mode . #271

Activity

1. thiru-baffle

   added

   bugSomething isn't workingSomething isn't working

   on Mar 27, 2024
2. thiru-baffle

   changed the title [-]Errored when inserting array value of custom datatype .[/-] [+]Errored when inserting array value of custom datatype in binary mode .[/+] on Mar 27, 2024
3. leopan3 commented on Apr 12, 2024

   

   leopan3

   on Apr 12, 2024

   Last edited by leopan3

   Contributor

   More actions

   Hi, I was not able to reproduce this issue. Using the example from https://github.com/aws/pg_tle/blob/main/docs/09_datatypes.md#create-base-type, an array value can be successfully inserted and retrieved:

   -- Create shell type
   SELECT pgtle.create_shell_type('public', 'test_citext');
    create_shell_type 
   -------------------
    
   (1 row)
   
   -- Create I/O functions
   CREATE FUNCTION public.test_citext_in(input text) RETURNS bytea AS
   $$
     SELECT pg_catalog.convert_to(input, 'UTF8');
   $$ IMMUTABLE STRICT LANGUAGE sql;
   CREATE FUNCTION public.test_citext_out(input bytea) RETURNS text AS
   $$
     SELECT pg_catalog.convert_from(input, 'UTF8');
   $$ IMMUTABLE STRICT LANGUAGE sql;
   -- Create base type
   SELECT pgtle.create_base_type('public', 'test_citext', 'test_citext_in(text)'::regprocedure, 'test_citext_out(bytea)'::regprocedure, -1);
    create_base_type 
   ------------------
    
   (1 row)
   
   -- Create a table using array type
   CREATE TABLE test_dt2(c1 test_citext[]);
   -- Insert a value
   INSERT INTO test_dt2 VALUES ('{test1, test2}');
   SELECT * FROM test_dt2;
         c1       
   ---------------
    {test1,test2}
   (1 row)
   

   insert into table values ('\0xcustomdatatypeValues,...); -> make sure this data is transferred via binary mode.

   Not sure if this is related, an array value input should be enclosed within curly braces and separated by commas; https://www.postgresql.org/docs/current/arrays.html#ARRAYS-INPUT

   Also, the input value has to be a textual (string) representation; a binary input representation is not supported in pg_tle yet. Could you try using a textual (string) representation instead of binary representation as the input and see if that works?
4. thiru-baffle commented on Apr 17, 2024

   

   thiru-baffle

   on Apr 17, 2024

   Author

   More actions

   String representation works. But it doesn't work for binary representation of an array.

   The following script will convert the text array to binary representation ( the following code converts array values to binary formats but not always).

   import java.sql.Connection;
   import java.sql.DriverManager;
   import java.sql.PreparedStatement;
   import java.sql.SQLException;
   import java.sql.Array;

   public class Main {

       public static void main(String[] args) {
           String url = "jdbc:postgresql://localhost:5432/postgres";
           String user = "postgres";
           String password = "your_password";
   
           try (Connection conn = DriverManager.getConnection(url, user, password)) {
               String sql = "INSERT INTO test (array_column) VALUES (?)";
               try (PreparedStatement pstmt = conn.prepareStatement(sql)) {
                   String[] arrayData = {"Sample data", "Sample data"};
                   Array array = conn.createArrayOf("VARCHAR", arrayData);
                   pstmt.setArray(1, array);
                   pstmt.executeUpdate();
               }
           } catch (SQLException e) {
               e.printStackTrace();
           }
       }
   

   }

   Wireshark capture confirms that data is serialized using binary formats.

   
5. leopan3 commented on Apr 17, 2024

   

   leopan3

   on Apr 17, 2024

   Contributor

   More actions

   Binary input representation (either an array or individual value) is not supported for a custom data type created by pg_tle API; Only string representative as the input format is supported.

   If a binary input representative is important for your application, could you create a feature request and share your use cases so that we may add this feature in a future version?
6. jim-mlodgenski

   added

   enhancementNew feature or requestNew feature or request

   and removed

   bugSomething isn't workingSomething isn't working

   on Jun 22, 2026