{"id":1641,"date":"2017-04-24T09:21:11","date_gmt":"2017-04-24T09:21:11","guid":{"rendered":"https:\/\/www.enprowess.com\/blogs\/?p=1641"},"modified":"2022-04-27T16:13:24","modified_gmt":"2022-04-27T10:43:24","slug":"scheduler-liferay","status":"publish","type":"post","link":"https:\/\/www.enprowess.com\/blogs\/scheduler-liferay\/","title":{"rendered":"Scheduler in Liferay 7 \/DXP, Isn&#8217;t it easy?"},"content":{"rendered":"<p>Often, there are requirements to automate certain process and execute it on regular interval. Scheduler programming helps for all such requirement. Liferay provides a flexible way to implement scheduler. In this post, I am going to talk about, steps to create scheduler in Liferay DXP\/7.<\/p>\n<p>Following are the prerequisite to start implementation,<br \/>\n<br \/>\n<strong>Pre-<\/strong><strong>requisites:<\/strong><\/p>\n<ul>\n<li><a href=\"http:\/\/www.oracle.com\/technetwork\/java\/javase\/downloads\/jdk8-downloads-2133151.html\">Java 1.8<\/a><\/li>\n<li><a href=\"https:\/\/web.liferay.com\/downloads\/liferay-projects\/liferay-ide\">Liferay Developer studio<\/a><\/li>\n<li>Liferay DXP\/7<\/li>\n<\/ul>\n<p>\nStarting point to implement Scheduler in Liferay DXP\/7 is to create module in Liferay workspace.<\/p>\n<p><strong>Create module in Liferay workspace:<\/strong><br \/>\nTo create Liferay modules, Right Click \u2192 New \u2192 Liferay Module Project. Give appropriate name and click finish.<br \/>\n<br \/>\nYou should see project structure as follow,<br \/>\n<br \/>\n<img loading=\"lazy\" class=\"size-full wp-image-1790 alignnone\" src=\"https:\/\/www.enprowess.com\/blogs\/wp-content\/uploads\/2017\/04\/scheduler1.png\" alt=\"Create module in Liferay workspace\" width=\"252\" height=\"300\" \/><br \/>\n<br \/>\nNow that you have created module in Liferay development environment, next step is to create class for scheduler. In this example I created class with name \u2018LiferayScheduler\u2019 under package com.enprowess.schedulerclass.<br \/>\n<br \/>\nYou need to extend BaseSchedulerEntryMessageListener class. This is abstract class contains default implementation for scheduler. You need to override two methods doReceive() and activate().<\/p>\n<p><strong>doReceive()<\/strong> : Implement the logic to execute on regular interval in this method. Ex,<\/p>\n<p><code><br \/>\n@Override<br \/>\nprotected void doReceive(Message message) throws Exception {<br \/>\nlog.info(\"Add your business logic for schedule here\u2026\");<br \/>\n}<\/code><\/p>\n<p><strong>activate()<\/strong> : In this method you need to define schedule time to execute scheduler. Ex.<\/p>\n<p><code><br \/>\n@Activate<br \/>\n@Modified<br \/>\nprotected void activate() {<br \/>\nschedulerEntryImpl.setTrigger (<br \/>\nTriggerFactoryUtil.createTrigger(getEventListenerClass(), getEventListenerClass(),\u00a024, TimeUnit.HOUR));<br \/>\n_schedulerEngineHelper.register(this, schedulerEntryImpl, DestinationNames.SCHEDULER_DISPATCH);<br \/>\n}<br \/>\n<\/code><\/p>\n<p>In above example, I am setting scheduler to execute on every 24 hours. Following are the method signatures of TriggerFactoryUtil to configure scheduler time interval,<br \/>\n<\/p>\n<ul>\n<li>createTrigger(String\u00a0jobName,\u00a0String\u00a0groupName,\u00a0Date\u00a0startDate,\u00a0Date\u00a0endDate, int\u00a0interval,\u00a0TimeUnit\u00a0timeUnit)<\/li>\n<li>createTrigger(String\u00a0jobName,\u00a0String\u00a0groupName,\u00a0Date\u00a0startDate,\u00a0Date\u00a0endDate,\u00a0String\u00a0cronExpression)<\/li>\n<li>createTrigger(String\u00a0jobName,\u00a0String\u00a0groupName,\u00a0Date\u00a0startDate, int\u00a0interval,\u00a0TimeUnit\u00a0timeUnit)<\/li>\n<li>createTrigger(String\u00a0jobName,\u00a0String\u00a0groupName,\u00a0Date\u00a0startDate,\u00a0String\u00a0cronExpression)<\/li>\n<li>createTrigger(String\u00a0jobName,\u00a0String\u00a0groupName, int\u00a0interval,\u00a0TimeUnit\u00a0timeUnit)<\/li>\n<li>createTrigger(String\u00a0jobName,\u00a0String\u00a0groupName,\u00a0String\u00a0cronExpression)<\/li>\n<\/ul>\n<p>\nI hope this post will give you fair idea how to implement scheduler in Liferay DXP\/7. Happy coding!<\/p>\n<p>Blog by,<br \/>\nMaitrik Panchal<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Often, there are requirements to automate certain process and execute it on regular interval. Scheduler programming helps for all such requirement. Liferay provides a flexible way to implement scheduler. In this post, I am going to talk about, steps to create scheduler in Liferay DXP\/7. Following are the prerequisite to start implementation, Pre-requisites: Java 1.8&hellip; <a class=\"more-link\" href=\"https:\/\/www.enprowess.com\/blogs\/scheduler-liferay\/\">Continue reading <span class=\"screen-reader-text\">Scheduler in Liferay 7 \/DXP, Isn&#8217;t it easy?<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":1642,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[8,46],"tags":[38,18,19,37],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v17.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Scheduler in Liferay 7 \/DXP, Isn&#039;t it easy? - EnProwess Blog<\/title>\n<meta name=\"description\" content=\"Are you planning to implement scheduler in Liferay DXP\/7? 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