Bitrix Framework

Introduction

In the old core, its own GetList, Update, Add, and Delete are programmed for each entity.

Deficiencies of such method:

• Different set of parameters;
• Different syntax of the filter fields;
• Events may be existent or non-existent;
• Sometimes different code for different databases (Add).

To make database selecting and saving operations uniform with the same parameters and filters. If possible, entity tables must be serviced with a minimum of a new code. Standard events of adding/changing/deleting must be available automatically.

The following notions were introduced to implement these purposes:

1. Entities (Bitrix\Main\Entity\Base).
2. Entity fields (Bitrix\Main\Entity\Field and its successors).
3. Data manager (Bitrix\Main\Entity\DataManager).

An entity describes a table in the database, and also contains entity fields. The DataManager performs selection and entity change operations. In practice, the work is mostly done at the level of the DataManager.