private int ExecuteSql(PostgreSqlTestSqlDataContext context, string sql)
{
using (var connection = new NpgsqlConnection(context.ConnectionString))
{
connection.Open();
using (var command = connection.CreateCommand())
{
command.CommandText = sql;
return(command.ExecuteNonQuery());
}
}
}
private void DropDatabase(PostgreSqlTestSqlDataContext context)
{
var builder = new NpgsqlConnectionStringBuilder(context.ConnectionString);
var testDatabase = builder.Database;
builder.Database = "postgres";
var connectionStringForMaster = builder.ToString();
using (var connection = new NpgsqlConnection(connectionStringForMaster))
{
connection.Open();
using (var command = connection.CreateCommand())
{
command.CommandText = $"SELECT pg_terminate_backend(pg_stat_activity.pid) FROM pg_stat_activity WHERE pg_stat_activity.datname = '{testDatabase}'; DROP DATABASE IF EXISTS {testDatabase};";
command.ExecuteNonQuery();
}
}
}
public void TestSequence()
{
var context = new PostgreSqlTestSqlDataContext();
DropDatabase(context);
_ = context.InitializeEngine <ITransactStoreEngine>(true);
var provider = Resolver.Get <ITransactStoreProvider <PostgreSqlTestTypesModel> >();
var relationProvider = Resolver.Get <ITransactStoreProvider <PostgreSqlTestRelationsModel> >();
TestModelMethods.TestSequence(provider, relationProvider);
const string changeColumn = "ALTER TABLE testtypes ALTER COLUMN int32thing TYPE bigint; ALTER TABLE testtypes ALTER COLUMN int32thing DROP NOT NULL;";
const string addColumn = "ALTER TABLE testtypes ADD dummytomakenullable int NOT NULL";
const string dropColmn = "ALTER TABLE testtypes DROP COLUMN bytething";
ExecuteSql(context, changeColumn);
ExecuteSql(context, addColumn);
ExecuteSql(context, dropColmn);
_ = context.InitializeEngine <ITransactStoreEngine>(true);
var sb = new StringBuilder();
var modelDetails = ModelAnalyzer.GetModel <MsSqlTestTypesModel>();
foreach (var property in modelDetails.Properties)
{
if (property.IsIdentity || property.IsIdentityAutoGenerated || property.IsRelated)
{
continue;
}
if (modelDetails.Properties.Any(x => x.ForeignIdentity == property.Name))
{
continue;
}
sb.Append("ALTER TABLE testtypes DROP COLUMN ").Append(property.PropertySourceName.ToLower()).Append(";\r\n");
}
var dropAllColumns = sb.ToString();
ExecuteSql(context, dropAllColumns);
_ = context.InitializeEngine <ITransactStoreEngine>(true);
sb.Clear();
foreach (var property in modelDetails.Properties)
{
if (property.IsIdentity || property.IsIdentityAutoGenerated || property.IsRelated)
{
continue;
}
if (modelDetails.Properties.Any(x => x.ForeignIdentity == property.Name))
{
continue;
}
if (property.IsNullable)
{
sb.Append("ALTER TABLE testtypes ADD Junk").Append(property.PropertySourceName).Append(" ");
PostgreSql.PostgreSqlEngine.WriteSqlTypeFromModel(sb, property);
PostgreSql.PostgreSqlEngine.WriteTypeEndingFromModel(sb, property);
sb.Insert(sb.Length - 4, "NOT ");
sb.Append(";\r\n");
}
}
var addJunkColumns = sb.ToString();
ExecuteSql(context, addJunkColumns);
_ = context.InitializeEngine <ITransactStoreEngine>(true);
}
