Purpose

Minor changes in the Lucene Search functionality
The hard-coded values for the field names were moved to the Configurations class and all the places in which this names were used were replaced. Also in the SearchViewModel.Search() method I've done minor changes to consider the wildcard expression * keyword *.
The next fields were removed: "InputParameters", "OutputParameters", "PackageName", "PackageVersion" due that are not used in the Legacy Search and neither in the Lucene search.

TODO - There is still a functionality that I think should be implemented (but not sure about it):
In the Legacy Search at indexing time each keyword (SearchKeywords) has assigned a specific weight between 0.0 - 1.0 (SearchKeywordsWeight) but when running the query those weights are used for sorting the results, in comparison, in the Lucene Search we are assigning a fixed weights for all the tags (see image attached), then for fixing this case we need to convert the SearchKeywords weights from 0.0-1.0 to 1 - 10 scale and set the right Boost value for each word, I think this should be implemented in the string CreateSearchQuery(string[] fields, string searchKey) method.


@reddyashish

Declarations

Check these if you believe they are true

• The codebase is in a better state after this PR
• Is documented according to the standards
• The level of testing this PR includes is appropriate
• User facing strings, if any, are extracted into *.resx files
• All tests pass using the self-service CI.
• Snapshot of UI changes, if any.
• Changes to the API follow Semantic Versioning and are documented in the API Changes document.
• This PR modifies some build requirements and the readme is updated
• This PR contains no files larger than 50 MB

Release Notes

Minor changes in the Lucene Search functionality

Reviewers

@QilongTang @reddyashish

FYIs