API: Make it possible to use pre-instantiated Java-based migrations

[guylabs]

Hi,

as we are using Spring with Flyway we want to use other beans inside the SpringJdbcMigrations. Therefore we created a new resolver which retrieves the SpringJdbcMigrations from the Spring application context. This way we are able to define the migrations inside the application context and reference other beans we would need for this migration inside the SpringJdbcMigraiton with the dependency injection mechanisms of Spring (@Autowired). Please have a look at the linked pull request and the tests how this is done.

If this pull request is accepted and integrated, then I would also add some documentation to the website project of Flyway on how to use this new resolver.

Thanks and regards,

Guy

[kapil-malik]

Hi,
This is very useful for us as well. The PR looks pretty cool. Any updates on how soon can it be part of flyway builds?
Till then we will override SpringJbdcMigrationResolver (like your code) as a workaround.

[guylabs]

@kapil-malik Thanks and yes this would be really useful.

@axelfontaine Thanks a lot for taking it up as a feature!

[wimdeblauwe]

+1 for this!

For those that cannot wait until this gets done: I have added a workaround on stackoverflow: http://stackoverflow.com/a/36474970/40064

BTW: If this is released, will there be an easy way to still have the SQL resolver as well to avoid the hacky workaround I had to do now?

[crstalli]

@wimdeblauwe Thank you very much! That was extremely helpful!

[marbot]

+1, that would be a very useful feature.

[axelfontaine]

See also #869

[geirgp]

+1