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Updated hibernate with schema export to automatically initialise db #3

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merged 1 commit into from Jun 8, 2021
Merged

Updated hibernate with schema export to automatically initialise db #3

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20 changes: 7 additions & 13 deletions README.md
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Expand Up @@ -10,7 +10,7 @@ The application can be reached at `localhost:8080`.

First a user has to be created and authenticated. To register a new user, a POST request to `api/v1/user/signup` must be sent.

#### Signup request:
#### Example signup request:
```json
{
"email": "user@example.com",
Expand All @@ -21,7 +21,7 @@ First a user has to be created and authenticated. To register a new user, a POST

After the successful registration, the user must be authenticated by sending a POST request to `api/v1/authentication`. A `Bearer` token is returned which is used for future requests.

#### Authentication request
#### Associated authentication request
```json
{
"email": "user@example.com",
Expand All @@ -31,12 +31,9 @@ After the successful registration, the user must be authenticated by sending a P

### Accessing the database

I have created an endpoint `api/v1/movie` with sample data to test this setup. The email address of a user can also be changed at `api/v1/user/email`.
I have created an endpoint `api/v1/movie` ~~with sample data to test this setup.~~ The email address of a user can be changed at `api/v1/user/email`.

#### Additional HTTP header
In order to change the email address, the header `X-Datasource: default` must be sent along. Otherwise, the lookup process would return the database of the authenticated user. It is only needed for `api/v1/user/email` and should not be used anywhere else.

#### Response of `GET` request `api/v1/movie/1`:
#### Example response of `GET` request `api/v1/movie/1`:

```json
{
Expand All @@ -47,7 +44,7 @@ In order to change the email address, the header `X-Datasource: default` must be
}
```

#### `PATCH` request to change email address:
#### Example `PATCH` request to change email address:
```json
{
"email": "new_user@example.com"
Expand All @@ -56,9 +53,6 @@ In order to change the email address, the header `X-Datasource: default` must be

The database is generated after the first access / request. The hashed email address serves as filename `database/[hashed_email].mv.db` and can be accessed through [localhost:8080/h2-console](http://localhost:8080/h2-console) (username and password is `admin`).

#### Information about schema generation
### Information about schema generation

Because of the dynamically generated databases, JPA (Hibernate) can't automatically initialise the databases. It instead generates a file [create.sql](src/main/resources/create.sql) which will be executed as soon as a new database is created. To update the file simply change [application.yml](src/main/resources/application.yml) accordingly:
```yml
spring.jpa.properties.javax.persistence.schema-generation.scripts.action: create
```
Hibernate automatically creates the schema of each database. In the case that the file [create.sql](src/main/resources/create.sql) doesn't exist, and a new datasource is being created, the application encounters an error and crashes.
5 changes: 5 additions & 0 deletions pom.xml
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Expand Up @@ -41,6 +41,11 @@
<artifactId>mapstruct</artifactId>
<version>${mapstruct.version}</version>
</dependency>
<dependency>
<groupId>com.github.v-ladynev</groupId>
<artifactId>fluent-hibernate-core</artifactId>
<version>0.3.1</version>
</dependency>

<dependency>
<groupId>io.jsonwebtoken</groupId>
Expand Down