/// <summary>
/// Perform database migration<br/>
/// 迁移数据库<br/>
/// </summary>
protected void MigrateDatabase()
{
// Prepare database migration
IModel initialModel = null;
using (var context = new EFCoreDatabaseContextBase(Database, ConnectionString)) {
// We may need create a new database and migration history table
// It's done here
context.Database.EnsureCreated();
initialModel = context.Model;
}
// Perform database migration
using (var context = new EFCoreDatabaseContext(Database, ConnectionString, Handlers, Providers)) {
var serviceProvider = ((IInfrastructure <IServiceProvider>)context).Instance;
var databaseCreator = serviceProvider.GetService <IDatabaseCreator>();
if (databaseCreator is IRelationalDatabaseCreator)
{
// It's a relational database, create and apply the migration
MigrateRelationalDatabase(context, initialModel);
}
else
{
// It maybe an in-memory database or no-sql database, do nothing
}
}
}
/// <summary>
/// Return database context to pool<br/>
/// 返回数据库上下文给池<br/>
/// </summary>
public bool Return(EFCoreDatabaseContext context)
{
if (Contexts.Count < Limit)
{
Contexts.Enqueue(context);
return(true);
}
return(false);
}
/// <summary>
/// Return database context to pool<br/>
/// 返回数据库上下文给池<br/>
/// </summary>
public bool Return(EFCoreDatabaseContext context)
{
// always set _leased.Value = false, because SetPool is not used
((IDbContextPoolable)context).ResetState();
if (Contexts.Count < Limit)
{
Contexts.Enqueue(context);
return(true);
}
return(false);
}
public Logger(EFCoreDatabaseContext context, string categoryName)
{
Context = context;
CategoryName = categoryName;
}
/// <summary>
/// Initialize<br/>
/// 初始化<br/>
/// </summary>
public EFCoreLoggerProvider(EFCoreDatabaseContext context)
{
Context = context;
}
