Migration to MySQL and Schema specified is not valid

entity-framework entity-framework-6 entity-framework-6.1 mysql

Question

I have migrated SQL2012 Database to MySQL, apart from one issue.

I get the following error when I connect to the MySQL Database.

An exception occurred while initializing the database.

InnerException for details: Schema specified is not valid. Errors: (0,0) : error 0040: The Type nvarchar(max) is not qualified with a namespace or alias. Only primitive types can be used without qualification.

This occurs for every String property in my classes.

I have tried the following:

    protected override void OnModelCreating(DbModelBuilder modelBuilder)
        { modelBuilder.HasDefaultSchema(String.Empty);}

However I still get the error.

Does anybody have suggestions that may resolve the issue.

I have also tried to generate a MySQL migration but I get the following error:

No Entity Framework provider found for the ADO.NET provider with invariant name 'MySql.Data.MySqlClient'. Make sure the provider is registered in the 'entityFramework' section of the application config file. See http://go.microsoft.com/fwlink/?LinkId=260882 for more information.

Is there a way of setting the MySQLProvider in Code?

Here is my DBConfiguration:

    public class EF6MySQLDbConfiguration : DbConfiguration
  {
    public EF6MySQLDbConfiguration()
    {
      if (CustomConnectionFactory.ServerName == "MySQL")
      {
        SetExecutionStrategy(MySql.Data.Entity.MySqlProviderInvariantName.ProviderName, () => new MySql.Data.Entity.MySqlExecutionStrategy());
        AddDependencyResolver(new MySql.Data.Entity.MySqlDependencyResolver());
        //Type t = typeof(MySqlProviderServices);
      }
      SetDefaultConnectionFactory(new CustomConnectionFactory());
    }

To overcome the problem when migrating the history table I added:

public Configuration()
    {
        AutomaticMigrationsEnabled = false;

        if (EF6MySQL.DataAccess.CustomConnectionFactory.ServerName == "MySQL")
        {
          SetSqlGenerator("MySql.Data.MySqlClient", new MySql.Data.Entity.MySqlMigrationSqlGenerator());
          SetHistoryContextFactory("MySql.Data.MySqlClient", (conn, schema) => new MySql.Data.Entity.MySqlHistoryContext(conn, schema)); 
        }
    }
1
0
12/30/2014 8:14:06 PM

Popular Answer

The solution is to add the following line:

protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
  if (CustomConnectionFactory.ServerName == "MySQL")
  {
    modelBuilder.Properties<String>().Configure(c => c.HasColumnType("longtext"));
  }}

The second answer provided here contained invaluable information to setup the 2 different databases.

0
5/23/2017 12:12:49 PM


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