private static SQLiteDataReader ExecuteReader(string sql)
{
using (SQLiteCommand cmd = new SQLiteCommand(sql, PersistentEntity <T> .Connection))
{
PersistentEntity <T> .SetCommandParameters(cmd);
return(cmd.ExecuteReader());
}
}
public static T MapData(Type type, SQLiteDataReader reader)
{
T instance = (T)Activator.CreateInstance(typeof(T), new object[] { });
foreach (var prop in type.GetProperties())
{
PersistentEntity <T> .SetValue(instance, prop, reader);
}
return(instance);
}
/// <summary>
/// Get the specified instance of the type.
/// </summary>
/// <param name="id">Instance primary key.</param>
/// <returns>The specified instance.</returns>
public static T Get(long id)
{
T instance = default(T);
String tableName = ORMSqlManager <T> .GetTypeTableName();
// Check if the instance is in memory
if (PersistentEntity <T> .database == null)
{
PersistentEntity <T> .database = new Dictionary <long, object>();
}
if (PersistentEntity <T> .database.ContainsKey(id))
{
return((T)PersistentEntity <T> .database[id]);
}
// Get the SQL sentence
if (PersistentEntity <T> .SqlSelectByPrimaryKey == null)
{
// PersistentEntity<T>.SqlSelectByPrimaryKey = ORMSqlManager<T>.SelectByPrimaryKey(typeof(T));
}
// Connecto to database
PersistentEntity <T> .Connect();
//PersistentEntity<T>.
//// Execute the SELECT sentence to retrieve the instance properties
//using (SQLiteDataReader reader = ExecuteReader(PersistentEntity<T>.SqlSelectByPrimaryKey))
//{
// if (reader.Read())
// {
// instance = PersistentEntity<T>.MapData(typeof(T), reader);
// }
//}
// Close the connection to database
PersistentEntity <T> .Disconnect();
// Store instance in memory database
PersistentEntity <T> .database.Add(id, instance);
return(instance);
}
private static void SetValue(object instance, PropertyInfo propertyInfo, SQLiteDataReader reader)
{
ORMProperty[] props = (ORMProperty[])propertyInfo.GetCustomAttributes(typeof(ORMProperty), false);
if (props.Length > 0)
{
if (PersistentEntity <T> .IsOrmInstance(propertyInfo.PropertyType))
{
//var methodInfo = propertyInfo.PropertyType.GetMethod("Get", System.Reflection.BindingFlags.FlattenHierarchy
// | System.Reflection.BindingFlags.Public
// | System.Reflection.BindingFlags.Static);
//methodInfo.Invoke(this, new object[] { (long)reader[props[0].FieldName] });
//PersistentEntity<T> refInstance = (PersistentEntity<T>)Activator.CreateInstance(propertyInfo.PropertyType, new object[] { });
//propertyInfo.SetValue(refInstance, PersistentEntity<T>.Get((long)reader[props[0].FieldName]));
}
else
{
propertyInfo.SetValue(instance, reader[props[0].FieldName]);
}
}
propertyInfo.SetValue(instance, reader[props[0].FieldName]);
}
