[DOC] add some documentation

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Edouard DUPIN 2024-05-05 12:33:49 +02:00
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Wrapping over the DB
====================
In the current version we consider 2 DB access: MySQL and SQLite, We commonly use the SQLite in test mode to permit to test is a real case.
Generic Access:
---------------
Some generic function are available to permit you to simply request the DB
### Create a new Value:
```java
MyDataModel dataToInsert = ...;
MyDataModel dataCreated = DataAccess.insert(dataToInsert);
```
### Get a full table:
```java
List<MyDataModel> data = DataAccess.gets(MyDataModel.class);
```
### Get a single element in the DB:
```java
UUID id = ...;
MyDataModel data = DataAccess.get(MyDataModel.class, id);
```
> **_Note:_** The Id type fully managed are UUID and Long
### Removing the Data:
```java
UUID id = ...;
DataAccess.delete(MyDataModel.class, id);
```
> **_Note:_** Removing the data automatically detect if it is a software remove or definitive remove
### Updating the Data:
The update of the data can be managed by 2 way:
- Direct update of the Object with direct injection (Good for `PUT`)
- Update with input json (Good for `PATCH`)
The second way is preferable for some reasons
- When jakarta transform the data in you object, we can not detect the element set at null or not set (We consider user of `Optional` il all data class will create a too bug amount of unneeded code in all dev parts)
- Throw in the jakarta parsing are not well catch when we will generate generic error
- The Check will permit to explain what is wrong better than a generic Json parser.
Updating with JSON:
```java
UUID id = ...;
String jsonRequest = "{...}";
DataAccess.updateWithJson(MyDataModel.class, id, jsonRequest);
```
Updating with direct data:
```java
UUID id = ...;
MyDataModel dataToUpdate = ...;
// This update all fields:
DataAccess.update(dataToUpdate, id);
// Select the field to update:
DataAccess.update(dataToUpdate, id, List.of("field1","field2"));
```
Generic option of the request:
------------------------------
Many API have a generic multiple option available like:
```java
public static <T> List<T> getsWhere(final Class<T> clazz, final QueryOption... option) throws Exception
```
You just need to add your options in the list of `option`.
Filter the list of field read:
```java
public FilterValue(final String... filterValue)
public FilterValue(final List<String> filterValues)
// example:
new newFilterValue("field1", "field2");
```
Add a condition [more detail](#condition-models)
```java
public Condition(final QueryItem items)
```
Order the request:
```java
public OrderBy(final OrderItem... childs);
// example:
new OrderBy(new OrderItem("name", Order.DESC));
```
Limit the :
```java
public Limit(final long limit)
// example:
new Limit(50);
```
Read all column like update date and create date or delete field
```java
public ReadAllColumn()
```
Condition models:
-----------------
Creating a condition independent of the DB model use need to have a little abstraction of the query model:
For this we propose some condition that update with the internal "auto" condition that is added (like the soft delete...)
### default generic comparator
This is the base of the comparison tool. It compare a column with a value
```java
public QueryCondition(final String key, final String comparator, final Object value);
```
Simple DB comparison element. Note the injected object is injected in the statement and not in the query directly.
Example:
```java
String nameToCheck = "plop";
new QueryCondition("fieldName", "=", nameToCheck);
// OR:
UUID uuid = ...;
new QueryCondition("uuid", "=", uuid);
```
### List comparator
It permit to check a column is (NOT) in a list of value
```java
public QueryInList(final String key, final List<T> value)
public QueryInList(final String key, final T... value)
```
and his opposite:
```java
public QueryNotInList(final String key, final List<T> value)
public QueryNotInList(final String key, final T... value)
```
example
```java
new QueryInList("uuid", List.of(uuid1, uuid2));
```
### NULL and NOT NULL checker
This permit to check an element is `NULL` or `not NULL`
```java
public QueryNull(final String key);
public QueryNotNull(final String key);
```
### The group condition:
The generic `OR` group:
```java
public QueryOr(final List<QueryItem> child);
public QueryOr(final QueryItem... child);
```
Or the generic `AND group:
```java
public QueryAnd(final List<QueryItem> child);
public QueryAnd(final QueryItem... child);
```
### Full example:
```java
List<MyDataModel> result = DataAccess.getsWhere(MyDataModel.class,
new Limit(50),
new OrderBy(new OrderItem("name", Order.DESC)),
new Condition(
new QueryAnd(
QueryNull("Field3")
new QueryOr(
new QueryInList("Field4", 5, 55, 65, 62, 27, 84),
new QueryCondition("cityID", ">", 78000);
)
)
)
);
```

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Basic tutorial
==============

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Data Model
==========
The data model have 2 parts: the model of the DB and the model of the API. It is important to consider the 2 part due to the fact annotation will be manage by by a part, ot the other. Here we will study the Checking of the Data.
DB data model
=============
API data model
==============
Checking of the Data
====================

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Archi-data documentation
========================
Archidata is base on generic Jakarta, grizzly and SQL or SQLite service.
It permit to simplify the interface of the server to concentrate on the API design.
Archi-data is a group of tools that manage some parts:
- [Wrapping over the DB](SQL_wrapper.md)
- [Data Model](data_model.md)
- [TypeScript Api generation](typescript_api_generation.md)
- [Migration tool](migration.md)
Some initialization tutorials:
- [Basic tutorial](TUTORIAL_01_first_install.md)

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Migration tool
==============
Migration is a big part of the Server environment, it permit to migrate an old DB to a new one, and some tool permit the opposite.
Archi-data does not permit to do a reverse migration. I implement some code for it, but is was never tested. On my professional activity, we migrate only forward (Request if if really needed).

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TypeScript Api generation
=========================