Last year, there was a huge buzz about this new protocol call  CMIS  that just was released at 1.0.  Much like  JCR , CMIS is a protocol that allows interoperability for document repositories of different systems (there is a good blog post about different use cases that can be found  here ).  The major advantage of CMIS over JCR is, well, it is not bound to Java....
Read More About Mounting Multiple CMIS Repositories on Liferay 6.1 »

One of the nice things about working for Liferay is the flexibility I have in where I can work.  Though originally from LA, my wife and I currently live in the UK and I work from home in the UK.  While this is great for many reasons, it is also really hard to collaborate with colleagues. Well, this past week, I had the great privilege of spending some focused time with my superstar...
Read More About Visiting Liferay Madrid »

Liferay's engineering team has been doing a lot of work on the Document Library for version 6.1.  But in one of the recent weekly meetings, a discussion sparked off about the possibility of having some kind of live preview for the Document Library.  This is meant in terms of both (1) thumbnails of files in the file listing and (2) previews of the actual document that you can go through...
Read More About Live Preview for Document Library »

In October, Apple released for OS X  their latest update of Java.  ( There was this whole hoopla about whether or not Java would cease to exist on OS X, but then Apple announced that it would be releasing much of its source code to OpenJDK -- discussions around that are not the topic of this blog post. ) One of the side-effects of that release was that Apple decided to move...
Read More About Developing with Java for Mac OS X 10.6 Update 3 »

For a while now, Liferay has offered Basic authentication for various servlets (e.g., WebDAV, JSON, etc.).  For the most part, this has suited most of our needs.  However, recently, there have been some client applications that now require the more stringent Digest authentication system.  To support these requirements, digest authentication has been added to Liferay . In...
Read More About WebDAV, Digest Authentication and Windows Vista/7 »

 After writing up about adding pingbacks to blogs, I realised that there could be an additional area where pingbacks would be quite useful -- message boards.  So, with a few changes in code, 6.0 will be coming with a new feature that allows messages to post pingbacks to any blogs (or any other pingback consumer). So, when you post a message that contains a URL to any pingback...
Read More About Pingbacks Aren't Only for Blogs »

One of the nice, collaborative features in blogs these days is the ability to leave comments.  But what if you, on your blog, are trying to comment about something somebody else blogged about?  Well, you would use some kind of linkback that would refer to the other blog, and leaves a comment on their blog that you were there. Previously, we implemented trackbacks as a basic way for...
Read More About Blogging about Blogging »

A few months ago Minhchau created a migration tool to move document library files from using one hook to another (e.g., JCRHook to AdvancedFileSystemHook).  He showed the code for it and wrote several plugins to handle this.  Due to popular request, this has now been moved into trunk !  I just checked in the code to help facilitate a move from one hook to another.
Read More About Document Library Hooks Migration »

When I was at the European Symposium, I was surprised how many people said to me "Gosh I wish Liferay could do ABC," in which I responded, "But it has -- ever since version X.YZ!"  But I guess part of that is my fault since I don't blog that much about my work. In any case, I just wanted to highlight two features coming out with 5.3 that some people may be interested in....
Read More About CMIS and Database Migration »

 I have been recently working on the very interesting task of making the Liferay database shardable.  What does this mean?  There is a good introduction to shards here , but basically it is a way of scaling your database horizontally.  For a given table or set of tables, you split up the data that is stored and fetched based on a given hash or something like that....
Read More About Sharding Databases - An Unorthodoxed Design »