Simplify the query language to search about properties

[cmoulliard]

TODO

Currently, konveyor uses such a syntax to perform a search against some files where the user can define the pateern to search about files like the content to search about

  when:
    builtin.filecontent:
      filePattern: application.*\.(properties|yml|yaml)
      pattern: server\.port|spring\.datasource|spring\.jpa

As we know thatwe would like to search about a properties file, then the syntax could be simplified like this

file.properties contains 'spring.datasource.url' => zero or 1 match
file.properties contains 'spring.*' => zero or n matches => this is a spring properties file
file.properties contains 'spring.jpa' => zero or n matches => this is a spring properties file with jpa. this is the equivalent of 'spring.jpa.*'

and

file.properties.dev contains 'spring.datasource.url'
file.properties.test contains 'spring.datasource.url'
file.properties.prod contains 'spring.datasource.url'
file.properties.* contains 'spring.datasource.url'
...

We could maybe allow also to search about a property=value

file.properties contains 'spring.datasource.url=jdbc:mysql://127.0.0.1:3306/todo'
file.properties contains 'spring.datasource.url=jdbc:://IP|HOSTNAME:/*' where IP, HOSTNAME, etc are reserved words to tell us that we should match a hostname: localhost, host.dns.name, OR IP address

WDYT ? @aureamunoz 

[aureamunoz]

IMO it seems a good idea. The most of the users only looks for files application*.properties so no need to write complicated regex is nice. Defining something like that es more declarative and easy to understand and given that is the pattern used by Spring Boot, it makes sense.

Regarding the use of reserved word...Ok, I aggree but we need to limit these ones because it can become endless quickly

[cmoulliard]

There is something that we should take care as the way to search is different depending if the file is application.properties OR application.yaml !
Should we, in this case, add a field able to tell within the query that the search string is for a properties (k=v, ...) or yaml (fields / indentation + ...) file ?

@aureamunoz