// drop statement
private void HandleStatement(DropStatement statement)
{
_catalogManager.CheckValidation(statement);
SchemaRecord schema;
switch (statement.TargetType)
{
case DropTarget.Table:
schema = _catalogManager.GetTableSchemaRecord(statement.TableName);
List <SchemaRecord> indices = _catalogManager.GetIndicesSchemaRecord(statement.TableName);
// drop table
_catalogManager.DropStatement(statement);
_recordManager.DropTable(schema.RootPage);
// drop index trees
foreach (SchemaRecord index in indices)
{
_recordManager.DropTable(index.RootPage);
}
break;
case DropTarget.Index:
schema = _catalogManager.GetIndexSchemaRecord(statement.IndexName);
_catalogManager.DropStatement(statement);
_recordManager.DropTable(schema.RootPage);
break;
}
}