Re: Updates to EntityQuery

[Yash Sharma]

I am all up for it, please let me know if I could help.

Thanks & Regards,
--
*Pradhan Yash Sharma*
*HotWax Systems* | www.hotwaxsystems.com

On Wed, Oct 25, 2017 at 6:23 PM, Yash Sharma <yash.sha...@hotwaxsystems.com>
wrote:

> Yes, Usage of the stream will surely enhance performance to a certain
> extent and removes ceremony from the code base. I think Parallel streams
> will add enhancements in many folds as we are using a multicore processor
> (I have not tested yet), but the Functional approach seems promising.
>
> Thanks & Regards,
> --
> *Pradhan Yash Sharma*
> *HotWax Systems* | www.hotwaxsystems.com
>
> On Wed, Oct 25, 2017 at 5:59 PM, Gareth Carter <
> gareth.car...@stannah.co.uk> wrote:
>
>> forUpdate
>>
>> We patched EntityFindOptions with a new field "forUpdate" with shorthand
>> methods in EntityQuery to enable. We then made a change to
>> GenericDAO.selectListIteratorByCondition to add "FOR UPDATE" on the end
>> of the SQL select statement - this allows for DB row locks (we use postgres
>> and works but have not tested other databases). I believe there may have
>> been a discussion about this before
>>
>>
>> forEach on EntityQuery
>>
>> Use Consumer in java and groovy to iterate over a query. This can reduce
>> memory consumption (replacement for queryList()) and boiler plate code (eg
>> queryIterator(), while loop and close)
>>
>> Example:
>>
>> EntityQuery.use(delegator).from("Foobar")
>> .forEach(item ->
>>     Debug.logInfo(item.toString(), module);
>> );
>>
>> A further update could be to provide stream capabilities
>>
>> Hope this helps, I can provide a patch aswell
>>
>> Gareth Carter
>> Software Development Analyst
>> Stannah Management Services Ltd
>> IT Department
>> Ext:
>> 7036
>> DDI:
>> 01264 364311
>>
>>
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>>
>> -----Original Message-----
>> From: Arun Patidar [mailto:arun.pati...@hotwaxsystems.com]
>> Sent: 25 October 2017 5:49 AM
>> To: dev@ofbiz.apache.org
>> Cc: arunpati...@apache.org
>> Subject: Re: Updates to EntityQuery
>>
>> Hello Gareth,
>>
>> Please provide some more details or patch to understand  - forUpdate and
>> forEach method utility.
>>
>> getFieldMap method looks good to me.
>>
>>
>>
>> --
>> Thanks & Regards
>> ---
>> Arun Patidar
>> Manager, Enterprise Software Development
>>
>> HotWax Systems Pvt Ltd.
>>
>> www.hotwaxsystems.com
>>
>>
>> On Tue, Oct 24, 2017 at 9:06 PM, Gareth Carter <
>> gareth.car...@stannah.co.uk>
>> wrote:
>>
>> > Hi all
>> >
>> > We have internally patched EntityQuery with some additional
>> > functionality and before I create a Jira was going to see what the
>> community thinks.
>> >
>> > New functionality:
>> >
>> > -       New method getFieldMap which returns a Map object of selected
>> > fields from GenericValue objects, useful for creating cache map
>> > objects for lookup
>> >
>> > -       Support forUpdate
>> >
>> > -       forEach method to accept Consumer
>> >
>> > We have found these useful and believe the project can benefit, let me
>> > know what you think
>> >
>> > Regards
>> >
>> > Gareth Carter
>> >
>> >
>> > Software Development Analyst
>> >
>> >
>> > Stannah Management Services Ltd
>> >
>> >
>> > IT Department
>> >
>> >
>> > Ext:
>> >
>> >
>> > 7036
>> >
>> >
>> > DDI:
>> >
>> >
>> > 01264 364311
>> >
>> >
>> >
>> >
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