private void ClearSchema(SqlDriver driver)
{
using (var connection = driver.CreateConnection()) {
connection.Open();
try {
var schema = driver.ExtractSchema(connection, SpecialSchemaAlias);
var foreignKeys = schema.Tables
.Select(t => new {
Table = t,
ForeignKeys = t.TableConstraints.OfType <ForeignKey>()
});
foreach (var dropConstraintText in from foreignKeyInfo in foreignKeys
from foreignKey in foreignKeyInfo.ForeignKeys
select driver.Compile(SqlDdl.Alter(foreignKeyInfo.Table, SqlDdl.DropConstraint(foreignKey))).GetCommandText())
{
using (var command = connection.CreateCommand(dropConstraintText))
command.ExecuteNonQuery();
}
foreach (var table in schema.Tables)
{
var dropTableText = driver.Compile(SqlDdl.Drop(table, true)).GetCommandText();
using (var command = connection.CreateCommand(dropTableText))
command.ExecuteNonQuery();
}
}
finally {
connection.Close();
}
}
}