Dynamic filtering with regex

[rigazilla]

Is dynamic filtering supported for regex?

I mean something like $.tags[?(@ =~ $.regexPattern)].

Here's a reproducer:

///usr/bin/env jbang "$0" "$@" ; exit $?
//DEPS com.jayway.jsonpath:json-path:2.9.0

import com.jayway.jsonpath.JsonPath;
import java.util.List;

/**
 * JBang reproducer demonstrating that JsonPath does not support dynamic regex patterns.
 *
 * Problem: Cannot use a value from the JSON document as a regex pattern in filters.
 * For example: $.tags[?(@ =~ $.pattern)] does not work.
 *
 * Run with: jbang RegexDynamicPattern.java
 */
public class RegexDynamicPattern {

    public static void main(String[] args) {
        String json = """
        {
          "pattern": "/business/",
          "regexPattern": ".*compu.*",
          "tags": [
            "technology",
            "business",
            "cloud-computing",
            "data-science"
          ]
        }
        """;

        // static pattern - WORKS Result: ["business"]
            List<Object> result = JsonPath.read(json, "$.tags[?(@ =~ /business/)]");
            System.out.println("Result: " + result);

        // static regex pattern - WORKS Result: ["cloud-computing"]
            result = JsonPath.read(json, "$.tags[?(@ =~ /.*compu.*/)]");
            System.out.println("Result: " + result);

        // Attempt to use dynamic pattern from document - FAILS Result: []
            result = JsonPath.read(json, "$.tags[?(@ =~ $.pattern)]");
            System.out.println("Query: $.tags[?(@ =~ $.pattern)]");
            System.out.println("Result: " + result);

        // Attempt to use dynamic regEx from document - FAILS Result: []
            result = JsonPath.read(json, "$.tags[?(@ =~ $.regexPattern)]");
            System.out.println("Query: $.tags[?(@ =~ $.regexPattern)]");
            System.out.println("Result: " + result);
        System.out.println();
    }
}