Adding custom predicate

[Former Community Member]

In the attached picture, how can I add in my own custom predicate. That is the edition search form page btw.

My use case is I'm trying to search for a property but need a 'LIKE' constraint in there. The

OOTB property predicate currently doesn't do that.

Thanks you

[smacdonald2008]

Because ootb one does not do that -- you can write your own using Java - this API: com.day.cq.search.PredicateGroup.

See this article as an example: 

https://helpx.adobe.com/experience-manager/using/customtags1.html

Hope this helps....  

[Former Community Member]

Sorry if I wasn't clear. I want to add my own custom predicate into that list. So I can tie my custom component in with my own query.

So when I edit a search form I want to be able to see my custom predicate in that list and add that into the form.

[smacdonald2008]

I have never attempted to configure the search form. However - here is the docs: 

https://docs.adobe.com/docs/en/aem/6-1/administer/operations/search-forms.html

Looks like you can configure a lot there. Look at the section title: ADDING OPTIONS PREDICATES. Looks like you can overlay some nodes to meet your requirements. Have you tried that? 

[Former Community Member]

I looked into that however it will still function the same as putting in an property predicate. I need to change up how the property predicate queries in the back end

and looking ways to extend this.

[smacdonald2008]

The best way to achieve your backend (predicate queries in the back end) is to write your custom back end using Java API (ie -https://commons.apache.org/proper/commons-collections/apidocs/org/apache/commons/collections4/Predic...)  and then hook into that from an overlay. Without writing your own logic - you are limited to what the OOTB ones do - as you stated they do not do what you need them to do. 

[Former Community Member]

Is there a way I can hook this on to a the OOTB Assets Admin Search Rail?

Maybe add a component in the search rail that can link to the back end when selected?

[smacdonald2008]

With AEM - you can add new views - see this article where Lokesh (2nd on leader board and 2015 community member of the year) wrote a custom view and hooked into AEM from the TOOLS menu. This is a Vanity URL tool - but it shows you how to add custom views. So in your case - you can call logic to use your custom Predicate and call it similiar to how Lokesh called his tool. 

http://scottsdigitalcommunity.blogspot.ca/2016/02/developing-vanitypath-manager-for-adobe.html

[user2797012]

See: https://shreshthkumar.wordpress.com/ Should help has a steps by step process of what you are trying to do. 

[Former Community Member]

I've managed to add in the custom predicate into the search form field.

My only problem is hooking the bank end logic to my custom predicate.

According to this adobe code:
https://github.com/Adobe-Marketing-Cloud/aem-docs-custom-predicate-evaluator/blob/master/src/main/ja...

Not sure where in CRDXE can I hook this line from the code onto : @Component(metatype = false, factory = "com.day.cq.search.eval.PredicateEvaluator/repli")

Thanks

[Former Community Member]

Any help on this last part?

[user2797012]

See here: https://docs.adobe.com/docs/en/cq/5-6-1/developing/implementing-custom-predicate-evaluator.html for the details on your version of AEM 

[Former Community Member]

Kanika Gera wrote...

See here: https://docs.adobe.com/docs/en/cq/5-6-1/developing/implementing-custom-predicate-evaluator.html for the details on your version of AEM 

Sorry but this doesn't quite answer my last post, it's the same code but just on GitHub. I need to know how to hook this on to the front end/crxde

[dhawanmayur]

Hi Big Red,

any success on this issue ?

If yes please share the solution

[smacdonald2008]

What issue are you having? How to use custom predicate?

[ashwiniv2817]

Hi,

Did u succeed in creating new custom search predicate?

If yes ,pls share the steps to follow

Thanks,

Ashwini

[AnkurAhlawat]

For adding a custom asset search predicate, you need to create 3 things:-

• overlay and add your field -  /libs/settings/dam/search/facets/formbuilderconfig/predicatetypes/items/<fulltext>
• Create a field property resource - dam/gui/coral/components/admin/customsearch/formbuilder/predicatefields/fulltextpredicatefield
• Create field resource type - dam/gui/coral/components/admin/customsearch/searchpredicates/fulltextpredicate
• Select a field resource view(How it should look) - granite/ui/components/foundation/form/textfield

Your back end logic will hook into Step 2 and 3.

[venkatreddyguda]

Hi,

Did you succeed in this?

Pls can you share the steps.

Thanks,

Venkat

[smacdonald2008]

Lokesh covers this in this webinar: Scott's Digital Community: [Webinar | February ] Ask the AEM Community Expert: Best practice to quer...

[venkatreddyguda]

I created custom asset search predicate and able to see under Assets Admin Search Rail

Now i want to know how i can connect this custom asset search predicate to my predicate evaluator in the backend.

Thanks,

Venkat