Improving Method Reference Ergonomics

[Archie Cobbs]

Hi Peter,

My apologies! I meant that *my* email was off-topic not yours :)

-Archie

On Sun, Dec 8, 2024 at 8:40 PM Peter Eastham <petereastham at gmail.com> wrote:

> Hey Archie,
>
> Sorry if this was off topic for Amber, is there a better email list for
> this type of language improvement?
>
> The JPA reference was only for a more common reference point. Not
> necessarily that I want that functionality in JPA itself.
>
> Thanks,
> -Peter
>
>
> On Sun, Dec 8, 2024 at 7:31 PM Archie Cobbs <archie.cobbs at gmail.com>
> wrote:
>
>> Hi Peter,
>>
>> Slightly off topic: You might be interested in the querystream library,
>> which provides a Stream-like wrapper around JPA's Criteria API.
>>
>> https://github.com/querystream/querystream/
>>
>> Disclaimer: I'm the author.
>>
>> -Archie
>>
>> On Sun, Dec 8, 2024 at 7:53 PM Peter Eastham <petereastham at gmail.com>
>> wrote:
>>
>>> Hi Amber team,
>>>
>>> Earlier this week I was playing around with fluent API design, and I
>>> believe Java could benefit from some improvements to the usage of Method
>>> References, I'll keep this short with the following example.
>>>
>>> Lets take the following JPA Criteria from section 6.3.3 of the
>>> Specification, (Only for an example of what an API could begin doing, not
>>> should do)
>>> CriteriaQuery q = cb.createQuery(Customer.class);
>>> Root customer = q.from(Customer.class);
>>> Join order = customer.join(Customer_.orders, JoinType.LEFT);
>>> q.where(cb.equal(customer.get(Customer_.status), 1)).select(customer);
>>>
>>> If there was greater access to the Method Reference more implicit
>>> information could be passed, reducing the noise,
>>> CriteriaQuery q = CriteriaQuery.createQuery(Customer::new)
>>>   .leftJoin(Customer::orders)
>>>   .where(Object::equals, Customer::status, 1);
>>> var result = q.select();
>>>
>>> Regarding what should be available, the resolved Class and Method name
>>> at least, anything else I'd leave up to the feasibility of the change.
>>>
>>> Thanks,
>>> -Peter
>>>
>>
>>
>> --
>> Archie L. Cobbs
>>
>

-- 
Archie L. Cobbs
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