URI matching for @QueryParam in Java Jersey Jax-RS

Question

How do I do the equivalent of this @Path param using query parameters?

@Path("/history/{startDate: [0-9][0-9][0-9][0-9]-[0-1][0-9]-[0-3][0-9]}/{endDate: [0-9][0-9][0-9][0-9]-[0-1][0-9]-[0-3][0-9]}")

Which would match this URI:

/history/1914-01-20/2014-01-20/

But now I need to match this:

/history/123456?end=2024-01-20&start=2014-11-12

This code works, but there is no validation against the start param and end param:

@Path("/history")

public Response getHistory( @QueryParam("start") String start,

                              @QueryParam("end") String end){ 

/*** foo ***/

}

Answer 1

Wich version of JAX-RS (or Jersey) are you using?

From version 2 you can use Bean Validation ( https://weblogs.java.net/blog/bhaktimehta/archive/2013/10/30/jax-rs-and-bean-validation )

Or a bit more complex in the case of your example, Entities Providers like

Jax-RS MessageBodyReader

https://blogs.oracle.com/arungupta/entry/jax_rs_custom_entity_providers

But is for version JAX-RS 2.

Answer 2

Since I was told there is no "matching" for query parameters, I found two other ways to handle this:

Method #1: Using Regular Expressions

//in my includes
import java.util.regex.Matcher;
import java.util.regex.Pattern;

//In my @GET endpoint
Pattern startPattern = Pattern.compile("[0-9][0-9][0-9][0-9]-[0-1][0-9]-[0-3][0-9]");
        Matcher startMatcher = startPattern.matcher(assigned);

        if (startMatcher.find()) {
            System.out.println("Matched!");
        } else {
            System.out.println("Did not match!");
        }

Method #2: Require a certain data type in your implementation

I can't really codify this as it's specific to your implementation, but in my implementation, I required a TIMESTAMPTZ for my database row. Jax-RS then throws an error when the QueryParam doesn't match during an SQL query.