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Liferay Configuration API dependencies

 I am using liferay 7.2.0 version.

Have not found:

compileOnly group: "com.liferay", name: "com.liferay.portal.configuration.metatype.api", version: "2.0.0"

Found:

compileOnly group: "com.liferay", name: "com.liferay.portal.configuration.metatype", version: "2.0.0"

Liferay's success or failure messages for user feedback and custom aui validator

 view.jsp:

<liferay-ui:success key="entity-updated-successfully" message="successfully-updated-entity-details"/>

<liferay-ui:error key="entity-updation-failed" message="failed-updation-entity-details"/>

Custom AUI Validator:

<aui:input name="title">

<aui:validator errorMessage="please-specify-file" name="custom" >

function (val, fieldNode, ruleVal){

    return     ((val!='') || A.one('#<portlet:namespace/>file').val() != '');

}

</aui:validator>

</aui:input>

liferay headless delivery open APIs URL

localhost:8080/o/headless-delivery/v1.0/openapi.json

Liferay 7.x inclusion of CSS or JS files into the portlet or widget

Include the below entries under portlet component properties:

"com.liferay.portlet.header-portlet-javascript":"/js/main1.js"

"com.liferay.portlet.header-portlet-javascript":"/js/main2.js"

liferay 7.x questions and answers - for certification

1. When multiple implementations are available for osgi-api which are used to identify the particular implementation for that client?
Sol : Policies & filters

2. bnd tools generate _____ file by using build.gradle entries.
Sol : MANIFEST.MF

3. what is require-capability & provide capability?

4. provide-capability vs export in osgi?

5. why we are using blade CLI in liferay development?
Sol : Blade CLI provides module project templates are mvc-portlet, service, service-builder and so on.

portlet lifecycle phases

1. init phase
2. render phase
3. action phase
4. resource phase
5. event phase
6. destroy phase