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Developing Glowroot Plugins Liferay DXP 2023.Q4+/Portal GA100+ Glowroot provides various out-of-the-box plugins. You can also build your own with the use of their plugin API. Here are some tips...

Script Examples Here are some examples to help you use scripts in DXP. Most of the examples originated from the Liferay blog post 5 Tips to Improve Usage of the Liferay Script Console. Example 1:...

Running Scripts From the Script Console The Script Console provides a single view for executing Groovy scripts and printing their output. It has predefined variables that facilitate working with...

Invoking Liferay Services From Scripts Many scripting scenarios require invoking Liferay services. Liferay *ServiceUtil classes are the fastest and most convenient way to invoke Liferay services in...

Troubleshooting Liferay Performance Issues with Glowroot Liferay DXP 2023.Q4+/Portal GA100+ Use Glowroot to identify and diagnose performance issues in your Liferay installation. The following...

Using the Script Engine Liferay provides a robust script engine for executing Groovy scripts. You can execute scripts to perform maintenance tasks involving data cleanup, user maintenance...

Troubleshooting Templates with Glowroot Freemarker Plugin Liferay DXP 2023.Q4+/Portal GA100+ Glowroot can troubleshoot FreeMarker templates to pinpoint slow transactions. Configuring the...

Contributing to Liferay Development You can contribute to Liferay DXP by opening a pull request against the liferay-portal repository on GitHub. This section covers the two common contribution...

Portal Developer Properties There are Portal Properties that facilitate development. Liferay's portal-developer.properties file includes all of them. The portal-developer.properties file is enabled...

7.3 Breaking Changes This document presents a chronological list of changes that break existing functionality, APIs, or contracts with third party Liferay developers or users. We try our best to...

7.4 Breaking Changes Breaking changes break or significantly alter existing functionality or code structure. Here are all of the breaking changes for Liferay 7.4, starting with the latest quarterly...

7.2 Breaking Changes This document presents a chronological list of changes that break existing functionality, APIs, or contracts with third party Liferay developers or users. We try our best to...

Creating Form Fragments Liferay 7.4 U45+/GA45+ The form components fragments are for building your object's forms in a content page. If Liferay's form fragments don't satisfy your use case, create...

Issue In case of a throughput issue, the Liferay support service usually asks to take some java thread dumps from the Liferay server, in an interval of 1-2 seconds. Taking several thread dumps, allows you to detect if a Java thread is stuck or taking too long to complete. How can I...

Issue I'd like to include a JSP in the doGet method of my Servlet plugin. The following gives NullPointerException:  this.getServletContext().getRequestDispatcher("index.jsp").include(httpServletRequest, httpServletResponse); Environment Liferay DXP 7.1 Resolution Add a Web-ContextPath...

Issue In order to test new developments, we want to set up a test environment that is a copy of the production environment to confirm that we will not have problems in the subsequent deployment in production. How can we approach this operation? Do you have any official guide for this or...

Issue We have implemented a custom code in an OSGi module that uses the Apache Axis client and is trying to invoke an external SOAP web service. When we try to call the external service, a ClassCastException error is produced inside the Axis Library: Caused by:...

Issue Does Liferay suggest a particular IDE for development? Environment DXP 7.0 | DXP 7.1 | DXP 7.2 | DXP 7.3 | DXP 7.4 Resolution Liferay does not have an officially recommended IDE, you may use whichever you are most comfortable with so long as it can write Java. Additional...

Issue Generated services that call FinderCache#getResult(FinderPath, Object[]) method fail to build due to its removal in 7.4 U47. This method was replaced by FinderCache#getResult(FinderPath, Object[], BasePersistence<?>). Environment Liferay Service Builder DXP 7.4 U46 and previous...

Issue With Liferay Workspace U47+, service builder fails at build task with error similar to: error: method getResult in interface FinderCache cannot be applied to given types; ... required: FinderPath,Object[],BasePersistence<?> found: FinderPath,Object[] reason: actual and formal...