The what

When string interpolation jql is not enough, yes I have this problem

The goal

Make it impossible to generate invalid jql with a simple yet complex api

Features

• ✔️ Simple
• 🧪 Well tested (I use this myself in my semi big projects)
• 👌 Follows SQL order by priority info
• 🤘 Impossible to generate invalid JQL (please open an issue if you found an edge-case)

Quick start 🧙

import { jql } from "jqlgen";

jql({ left: "summary", sign: "=", right: "nice" })
    .and({
        left: "summary",
        sign: "!=",
        right: "look mom, im cool",
    })
    .or(
        jql({ left: "foo", sign: "in", right: [1, 2, 3] }).and({
            left: "bar",
            sign: "!=",
            right: 2,
        })
    )
    .orderBy({ field: "issuekey", type: "asc" })
    .toString();

// ((summary = 'nice') and (summary != 'look mom, im cool') or ((foo in (1,2,3)) and (bar != 2))) order by issuekey asc

Injecting unknown jql statements

For example when you want to integrate unknown jql queries into your own, for example from a Jira filter, there exists a simple function for that

jql().injectExternal("a = 'b' order by summary asc");

This is pretty the same as calling

jql({ left: "a", sign: "=", right: "b" }).orderBy({ field: "summary", type: "asc" });

⚠️ Note: jql validation is out of scope for this package, therefore you are responsible for calling injectExternal with valid jql strings

A note about order by

You can call order by at any level, it gets resolved like this: final string output: [parent] asc/desc, [child-parent] asc/desc, [child-child-parent] asc/desc

It's not the other way around, because jql sorts the first field the last, I will try to maintain sql behavior so I am reversing it

An example

const output = jql()
    .and(jql().orderBy({ field: "child", type: "asc" }))
    .orderBy({ field: "parent", type: "asc" });

expect(output.toString()).toBe("order by parent asc, child asc");

API

declare class JqlGen {
    constructor(statement?: JqlStatement);
    and(statement: JqlGen | JqlStatement): JqlGen;
    or(statement: JqlGen | JqlStatement): JqlGen;
    orderBy(orderByItem: OrderByOperator): JqlGen;
    injectExternal(str: string): JqlGen;
    toString(): string;
}

/** if you're lazy, hey I don't blame you, tiny wrapper to not spam new new new */
declare function jql(statement?: JqlStatement): JqlGen;

Nest as much as you want

Yes, you can go wild like this

const output = jql({
    left: "c",
    sign: "<",
    right: "d",
})
    .and(
        jql({ left: "e", sign: "~", right: "f" }).or(
            jql({ left: "g", sign: ">", right: "h" })
                .and(
                    jql({ left: "i", sign: "=", right: "j" }).or(
                        jql({ left: "k", sign: "!=", right: "l" }).and(
                            jql({ left: "m", sign: "is not", right: "n" }).or(
                                jql({ left: "o", sign: "in", right: ["p", "q", "r"] })
                                    .and(
                                        jql({
                                            left: "s",
                                            sign: "not in",
                                            right: ["t", "u", "v"],
                                        }).or(
                                            jql({ left: "w", sign: "!~", right: "x" }).and(
                                                jql({ left: "y", sign: "was", right: "z" }).or(
                                                    jql({
                                                        left: "aa",
                                                        sign: "was in",
                                                        right: "bb",
                                                    }).and(
                                                        jql({
                                                            left: "cc",
                                                            sign: "was not in",
                                                            right: "dd",
                                                        }).orderBy({
                                                            field: "one",
                                                            type: "desc",
                                                        })
                                                    )
                                                )
                                            )
                                        )
                                    )
                                    .orderBy({
                                        field: "two",
                                        type: "asc",
                                    })
                            )
                        )
                    )
                )
                .orderBy({ field: "three", type: "desc" })
        )
    )
    .toString();

// ((c < 'd') and ((e ~ 'f') or ((g > 'h') and ((i = 'j') or ((k != 'l') and ((m is not 'n') or ((o in ('p','q','r')) and ((s not in ('t','u','v')) or ((w !~ 'x') and ((y was 'z') or ((aa was in 'bb') and (cc was not in 'dd')))))))))))) order by three desc, two asc, one desc

Of course, your app should dynamically generate this stuff