Conditionally disabling Spring DataSource

[surreal gust]

Hello, I am working on a Spring project using Spring Data JPA as a database. I would like to conditionally enable/disable a DataSource on startup.
Specifically, in case the DataSource information is invalid, or a user does not want to use a database, it should be possible to not configure a DataSource. However, if the DataSource is invalid the application simply crashes.

I am creating the DataSource using DataSourceBuilder in a @SpringBootConfiguration class

[subtle junco]

<@&1004656351647117403> please have a look, thanks.

[subtle junco]

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[surreal gust]

This is the way I'm creating the DataSource:

    @Bean
    public DataSource getDataSource() throws IOException {
        if (url == null || username == null || password == null) {
            return askForDataSource();
        }
        DataSourceBuilder<?> dataSourceBuilder = DataSourceBuilder.create();
        dataSourceBuilder.driverClassName(driverClassName);
        dataSourceBuilder.url(url);
        dataSourceBuilder.username(username);
        dataSourceBuilder.password(password);
        return dataSourceBuilder.build();
    }

Although I don't think thats super relevant here

[subtle junco]

Detected code, here are some useful tools:

Formatted code

@Bean
public DataSource getDataSource() throws IOException {
  if (url == null  || username == null  || password == null ) {
    return askForDataSource();
  }
  DataSourceBuilder<? > dataSourceBuilder = DataSourceBuilder.create();
  dataSourceBuilder.driverClassName(driverClassName);
  dataSourceBuilder.url(url);
  dataSourceBuilder.username(username);
  dataSourceBuilder.password(password);
  return dataSourceBuilder.build();
}

[solid gale]

Why would it make sense to allow the user to use to use a Database or not?

Springboot automatically generates queries for databases to create them and the tables and tabs and stuff

If your database requires a database then it will always require one

You have two options you can switch between databases such as H2 and MySQL

Please think about why you are doing this.

[surreal gust]

I know that

I can either choose to use spring boot, or I can save data in the classpath

Either will work, and it depends on your use case

I just want to know how I can disable the JPA stuff at runtime

[solid gale]

You would have to disable everything that requires it

As well