Replace Query and Criteria APIs with library support

[eawagner]

There are a number of libraries out there that provide a lot of the same functionality of the query and criteria APIs.

That being said, we should probably pick which library support we should use.

I am impartial to JEXL because it provides a very rich AST for representing queries and a very flexible evaluation engine. That being said, it is very very complex in some instances.

Alternatives could also include:

• Javaluator
• MVEL
• JUEL

If we chose one we need to distinguish between the definition of a query VS the evaluation of a query. We can use different libraries for each.

[eawagner]

Since having written this, I would suggest looking into using one of the following depending on your use case.

JEXL - java style syntax, with feature rich AST for developing against.
Lucene - More use friendly syntax and compatible with lots of popular systems (ElasticSearch, Solr, etc). More complicated AST to work with however.
Calcite - SQL syntax support and very feature rich AST. Most complicated than the others but much more feature rich set of capabilities for defining queries.