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Using ORMLite to Save PostgreSQL Custom Enumerated Datatypes


Using ORMLite to Save PostgreSQL Custom Enumerated Datatypes

By : user2948751
Date : November 15 2020, 06:54 AM
this one helps. In general ORMs play poorly with custom database types.
You might have some luck by setting the stringtype to unspecified; append stringtype=unspecified to your JDBC parameters. This tells PgJDBC to send parameters of type java.sql.Types.VARCHAR as unknown instead of the default of text. PostgreSQL won't implicitly cast from text to an enum, but it will from an unknown-typed literal to an enum.
code :


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enumerated datatypes and gcc

enumerated datatypes and gcc


By : Swati
Date : March 29 2020, 07:55 AM
Hope this helps From all your answers it seems that the code is logically correct, and I need to investigate the real reason for the crash. I will investigate it and post it soon.
How do I use enumerated datatypes in Objective-C?

How do I use enumerated datatypes in Objective-C?


By : user3147756
Date : March 29 2020, 07:55 AM
will help you That sounds like the right thing to do.
It's really simple to create enums in Objective-C using C-style type definitions. For example, in one of my header files, I have the following type definition:
code :
typedef enum {
  CFPosterViewTypePoster = 0,
  CFPosterViewTypeStart, // 1
  CFPosterViewTypeEnd,   // 2
  ....                   // 3
} CFPosterViewType;   
CFPosterViewType posterType = CFPosterViewTypeStart;
if (posterType == CFPosterViewTypePoster) {
    // do something
}
Ormlite and PostgreSQL - Error inserting text array with custom persister

Ormlite and PostgreSQL - Error inserting text array with custom persister


By : dima_k
Date : March 29 2020, 07:55 AM
will be helpful for those in need I've not used ormlite before (I generally use MyBatis), however, I believe the proximal issue is this code:
code :
 private StringArrayPersister() {
        super(SqlType.STRING, new Class<?>[]{String[].class});
    }
private StringArrayPersister() {
        super(SqlType.OTHER, new Class<?>[]{String[].class});
    }
Enumerated Types with ActiveRecord and Postgresql

Enumerated Types with ActiveRecord and Postgresql


By : ADrunkRussian
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , You need to switch from db/schema.rb to db/structure.sql.
The underlying problem is that schema.rb is a representation of the database's structure as ActiveRecord sees it but ActiveRecord doesn't understand a lot of things (such as create type, CHECK constraints, and other things that show up in execute some_raw_sql statements in migrations) that PostgreSQL does. You can create type all you want but schema.rb will never see it.
C custom datatypes mapped to C datatypes grouped under a single struct

C custom datatypes mapped to C datatypes grouped under a single struct


By : K Cosmo
Date : October 21 2020, 06:10 AM
I wish this help you You may assign a unique ID number to each data type, and have both sides of the message passing line agree on it. Apparently you cannot compare data types, i.e. if (data_type == MPI_INT), but you can compare IDs.
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