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Rendering ExtJS app in a specific page element Introduction Hello, My name is Jiří Znoj and I am working as a Software Engineer at profiq, an agile software development company. I, as a part of the team “Tech Research”, investigate various technologies for potential customers and for our purposes - to use the best technologies for our cause. Nowadays web apps are built by a combination of technologies. There are many frameworks that you can combine to build excellent and powerful web systems. Lately, I've been exploring Liferay, a Java-based…

In case you are evaluating a database for your project(s), you might come across an EnterpriseDB's Postgres Plus Advanced Server (PPAS). This database is part of an EnterpriseDB (EDB) offering, which is a company providing optimizations, support, performance and security additions and tools (such as Oracle compatibility) for Postgres SQL database. Lately I had a need to use a database for my Liferay portal other than the one that is bundled within Liferay installation, so I have picked up EnterpriseDB's PPAS. (more…)

Liferay supports multi-tenant configurations via multiple portal instances in a single web container. What is the Portal instance? It is a Liferay's feature which allows you to have two or more separated user spaces under one physical installation. It simplifies the deployment and administration. Liferay also provides a Properties Override capability to override default properties file so each Portal Instance can have it's own properties file. As you might know, settings for Documents and Media are put in properties file. In this article we will look at options to setup multi-tenant…

Liferay Portal is an enterprise collaboration platform with document management system. It supports multiple users to have access to the same files. Making a mistake, while editing a file represents a risk for all the users. What if someone deletes an important part of a text? Is it definitely lost? No, it isn't. We can rely on Document Pros versioning system to address this concern. But, what if you use an external system as your document management repository (such as Amazon S3) that provides an own versioning capability too? Which…

I described the way how to migrate data from Liferay out to Amazon S3 in a previous article. This article is about the opposite case. Are you using file storage solution with Amazon S3 and want to import documents to Liferay? Is it possible to move existing files and folders from Amazon S3 to Liferay Portal? Yes, it is! (more…)

We have been exploring capabilities of integrating Liferay with Amazon's S3 storage service set for documents library repository. In one of our previous article we have introduced the purpose of integrating Liferay with Amazon S3 and provided basic information on how to setup those 2 systems to talk to each other. Liferay's introduction on document management discusses some of the common business use cases and I thought I could elaborate on those in more details with regards to Liferay's use of Amazon S3 services. In below article I'll try to describe…

We slightly introduced Amazon S3 and its basic integration with a clean Liferay installation in a previous article. What should you do, if you have already uploaded files in Liferay and you want to move them from local storage to Amazon S3? Files that are uploaded to Liferay's local storage will become inaccessible, if you just perform the steps described in the previous article. That's because the procedure configures Liferay to use Amazon S3 instead of its local storage without moving files that were originally uploaded to the local storage.…

As cloud computing is a popular buzz word these days, I thought about setting up Liferay with cloud storage services such as Amazon S3. Liferay has built-in capability to integrate with Amazon S3 for some time, I'm providing a particular example how to get it running quickly so anyone can explore it's capabilities. (more…)