public PrimitiveListTable(PropertyMapping parentIdColumn, SqlType primitiveType, bool maintainOrder = false)
{
if (parentIdColumn == null)
throw new ArgumentNullException("parentIdColumn");
if (primitiveType == null)
throw new ArgumentNullException("primitiveType");
_columns = new List<PropertyMapping>(3)
{
new PropertyMapping
{
ColumnName = "ParentId",
SqlType = parentIdColumn.SqlType,
Table = this
},
new PropertyMapping
{
ColumnName = "Value",
SqlType = primitiveType,
Table = this
}
};
if (maintainOrder)
{
_columns.Add(new PropertyMapping
{
ColumnName = "Index",
SqlType = new SqlType(SqlDbType.BigInt, false),
Table = this
});
}
MaintainOrder = maintainOrder;
}
public void AddProperty(PropertyMapping propertyMapping)
{
_propertyMappings.Add(propertyMapping);
}
private void GenerateForPrimitive(Type type, PropertyMapping prop, ILGenerator generator, int i)
{
var propertyInfo = type.GetProperty(prop.Name);
if (propertyInfo == null)
throw new InvalidOperationException("Class does not match mapping. This is really strange.");
var propertyType = propertyInfo.PropertyType;
var canBeNull = prop.Nullable || propertyType == typeof (string);
var setMethod = propertyInfo.GetSetMethod();
if (setMethod == null)
throw new InvalidOperationException("Mapped property must have set method.");
var endIfLabel = generator.DefineLabel();
if (canBeNull)
{
// if(!reader.IsDbNull(i + offset))
generator.Emit(OpCodes.Ldarg_0);
generator.Emit(OpCodes.Ldarg_2);
generator.Emit(OpCodes.Ldc_I4, i);
generator.Emit(OpCodes.Add);
generator.Emit(OpCodes.Callvirt, IsDbNullMethod);
generator.Emit(OpCodes.Brtrue, endIfLabel);
}
// obj.Property = reader.GetInt(i + offset);
generator.Emit(OpCodes.Ldarg_1);
generator.Emit(OpCodes.Ldarg_0);
generator.Emit(OpCodes.Ldarg_2);
generator.Emit(OpCodes.Ldc_I4, i);
generator.Emit(OpCodes.Add);
generator.Emit(OpCodes.Call, GetGetterMethod(propertyType, prop.Nullable));
if (prop.Nullable)
{
// obj.Property = new Nullable<int>(reader.GetInt(i + offset));
generator.Emit(OpCodes.Newobj,
propertyType.GetConstructor(propertyType.GetGenericArguments()));
}
generator.Emit(OpCodes.Call, setMethod);
// end if
if (canBeNull)
generator.MarkLabel(endIfLabel);
}