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Creating OSGi Modules and Sharing Packages

  Overview This guide walks through creating two OSGi modules in Liferay 7.4 and sharing a Java package between them using the standard API + Implementation pattern. This is the most common and correct approach for exposing reusable services in a Liferay-based architecture. In OSGi, a bundle (module) does not expose its internal packages by default — everything is private unless explicitly exported. To share code between modules, the standard practice is to split functionality into: · An API module — contains interfaces/DTOs and exports the package · A Service (Implementation) module — implements the interface, imports the package, and registers the implementation as an OSGi component/service The consuming module then simply imports the API package and looks up the service using @Reference injection. Step 1: Create the API Module Using Liferay Workspace + Blade CLI, generate a new API module: blade create -t api -p com.sgc.greeting greeting-api This generates a Gradle module unde...
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Configure Keycloak 15 as the Identity Provider (IdP) with Liferay 7.4

  1. Configure Keycloak 15 as the Identity Provider (IdP)  Liferay 7.4 Keycloak will manage your users and issue SAML assertions. ·         Create a SAML Client : 1.      Log in to the Keycloak Admin Console and go to Clients > Create . 2.      Client ID : Use a unique identifier (e.g., liferay-saml-sp ). 3.      Client Protocol : Select saml . 4.      Client SAML Endpoint : Use Liferay's ACS URL: https://[your-domain]/c/portal/saml/acs . ·         Adjust Client Settings : 1.      Valid Redirect URIs : Set to https://[your-domain]/* . 2.      Name ID Format : Set to email or username based on your Liferay user mapping. 3.      Force Name ID Format : Set to On . 4.      Client Signature Required : Set to Off for initi...
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OSGI and Why Liferay Uses OSGi

  Introduction to OSGi OSGi (Open Services Gateway initiative), now maintained as the OSGi Alliance's core module framework, is a dynamic module system for Java. It defines how independent units of code, called bundles, are packaged, deployed, versioned, started, stopped, and wired to one another at runtime — all without restarting the JVM. At its core, OSGi solves three problems that plain Java (and traditional WAR-based deployment) does not solve well: Modularity — code is packaged into bundles with explicit imports/exports, so internal implementation details stay hidden (encapsulation at the JAR level, not just the class level). Versioning — multiple versions of the same package or library can co-exist in the same JVM, each bundle wired to the version it actually needs. Dynamism — bundles can be installed, updated, started, and stopped individually, at runtime, without redeploying or restarting the whole application. 1.1 Key Building Blocks ...
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service builder with crud operation in liferay

   Crud and Search opration in Liferay:      ->  Liferay use service builder techniq for Crud opration.    ->  Service builder purform by  Service.xml file.    ->  Service.xml file create table in database and also create class and diffrent method.   1)      Create service.xml file.             ->Create service.xml file in WEB-INF and write below code.             ->CODE:        < service-builder package-path = "com.test" >         < namespace > qr </ namespace >           < entity name = "Searchclass" local-service = "true"                     ...
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How to create new site programmaticly in liferay with validation

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The Ultimate Guide to Liferay DXP Performance Tuning: Speed Up Your Portal

The Ultimate Guide to Liferay DXP Performance Tuning: Speed Up Your Portal In the enterprise web space, milliseconds equal millions. Whether you are running a B2B commerce storefront, a customer support portal, or an employee intranet on Liferay DXP, slow load times will devastate your user experience and destroy your SEO rankings. Out of the box, Liferay is configured to run on almost any machine. This means its default settings are highly conservative to ensure compatibility, not maximum performance. If you are launching a production environment without tuning your server, you are leaving massive amounts of speed and scalability on the table. In this comprehensive, deep-dive guide, we are going to explore the critical layers of Liferay performance tuning. We will cover backend Java Virtual Machine (JVM) configuration, Database Connection Pooling, Elasticsearch optimization, and Frontend caching strategies. By the end of this guide, you will have a blazing-fast, enterprise-grade...
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