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Wednesday, January 26, 2011

Web 2.0 Solutions with Oracle WebCenter 11g (book review)

by Fábio Souza

Hello People! This was supposed to be a post to celebrate the new year, but, as you all can notice, the things didn't happen the way I was expecting (again haha). Today I will talk about this strategic product and (as promised) I will make my review about the book Web 2.0 Solutions with Oracle WebCenter 11g.

About WebCenter

The Goal

Today we interact with content/information on the internet not just as a spectator, but also as a collaborator: we help on the knowledge construction in a dynamic way. This can be done when you put “Like” in something that your friend is saying on the Facebook, when you write an article on Wikipedia or when you post your comment on your favorite blog. All this meta-information, in some way, helps to spread the knowledge and to make it be easier to be found.
To make this possible in the business world, we need a next-generation enterprise workplace: a portal that leverages Web 2.0 technologies, user-focused and community-centric. The goal is to tie together people, ideas, content, processes, systems, and enterprise applications.

The Product

Oracle WebCenter 11g is Oracle's strategical product to deal with E2.0. It provides services such as: discussion forums, wikis, blogs, and tagging, directly from the context of a portal or an application. It worth to mention that Oracle WebCenter is integrated and certified with Oracle Universal Content Management (UCM), Oracle Identity Management Suite, Oracle SOA Suite, Oracle Enterprise Manager, and Oracle eBusiness Suite, as well as PeopleSoft, Siebel, and JD Edwards enterprise applications.

The Components

Oracle WebCenter Framework:

It is an ADF extension that, besides including all its functionalities/facilities, contains several components that make possible (and easy) to construct a portal, as if it was a common web application. The framework uses the Oracle Metadata Services (MDS), that offers a layer to store customization data, avoiding a mix between code and metadata (The MDS is widely explored on Oracle Composer).
To put the Webcenter Framework to work, you just have to download the extension on you JDeveloper, it will make all the framework components available to be used on your own applications. Its good to remember that JDeveloper provides an integrated development environment for composite J2EE applications, business processes, BI applications, and enterprise portals.
There is some good information about JDeveloper on my previous post, check it out!

WebCenter Services:

This is the component that give access to the infrastructure that, not only turns your corporate environment into a “social network”, but take it beyond.

Social Networking Services - Enables users to maximize productivity through collaboration.
People Connection – Enables users to assemble their business networks like linked-in
Discussions - Provides the ability to create and participate in threaded discussion. This is an embedded version of Forums provided by Jive Software.
Announcements - Enables users to post, personalize, and manage announcements.
Instant Messaging and Presence (IMP) - Provides the ability to observe the online presence status of other authenticated users (whether online, offline, busy, or idle) and to contact them.
Blog - Enables blogging functionality within the context of an application. This feature comes from an embedded version of open source package jzWiki.
Wiki - Self-service, community, oriented-content publishing and sharing. This is an embedded version of open source package jzWiki.
Shared Services - Provides features for both social networking and personal productivity.
Documents - Provides content management and storage capabilities, including content upload, file and folder creation and management, file check out, versioning, and so on. This functionality requires licensing of a JCR (JSR-170) compliant document repository product.
Links - Provides the ability to view, access, and associate related information; for example, you can link to a solution document from a discussion thread.
Lists - Enables users to create, publish, and manage lists. (Available only in WebCenter Spaces)
Page - Provides the ability to create and manage pages at runtime.
Tags - Provides the ability to assign one or more personally relevant keywords to a given page or document. This feature is similar to the del.cio.us website.
Events - Provides group calendars, which users can use to schedule meetings, appointments, and any other type of team get-together. This feature requires deployment of a separate calendaring server, which may be Oracle Beehive or Microsoft Exchange. (Available only in WebCenter Spaces)
Personal Productivity Services - Focuses on the requirements of an individual, rather than a group.
Mail - Provides integration with IMAP and SMTP mail servers to enable users to perform simple mail functions such as viewing, reading, creating, and deleting messages, creating messages with attachments, and replying to or forwarding existing messages.
Notes - Provides the ability to "jot down" and retain quick bits of personally relevant information. (Available only in WebCenter Spaces)
Recent Activities - Provides a summary view of recent changes to documents, discussions, and announcements.
RSS - Provides the ability to publish content from WebCenter Web 2.0 Services as news feeds in RSS 2.0 and Atom 1.0 formats. In addition, the RSS service enables you to publish news feeds from external sources on your application pages.
Search - Provides the ability to search tags, services, an application, or an entire site. This makes use of a license limited version of Oracle's search product.
Worklist - Provides a personal, at-a-glance view of business processes that require attention. These can include a request for document review and other types of business process that come directly from enterprise applications.

The WebCenter Services benefits can be reaped by the whole Webcenter Suite Portal stack*:

Oracle Portal
Oracle WebLogic Portal
Oracle WebCenter Interaction

* There are some restrictions

Oracle Composer:

Oracle Composer is an innovative component that enables any application or portal to be customized (changes that affects the general visualization) or personalized (changes made by a person that affects the that person's own visualization) after it has been deployed and is in use. The personalizations/customizations are managed by Oracle Metadata Services (MDS). Oracle Composer is designed to be extremely easy to use so that business users and end users can edit any page with a few clicks of the mouse. Oracle Composer runs in all modern browsers and provides a rich, dynamic way to edit JSF application and portal pages.
The developers can use the Webcenter Framework to design portal applications that uses Oracle Composer.

Oracle WebCenter Spaces:

A ready-to-use application that pulls together all the WebCenter features:

Webcenter Services
Webcenter Composer
Oracle MDS
Easy to integrate with applications developed with Webcenter Framework
Easy to integrate with any other application (actually this can be achieved using the Oracle ADF Model layer)

The focus is to empower teams to quickly and efficiently manage their information, applications, projects, and people. Oracle WebCenter Spaces is prepared to work effectively with project teams and work groups, including teams that span multiple geographies or include external members.

Notes

A new release of Oracle Webcenter Suite 11g is already available. This post does not cover the new features/changes.

Web 2.0 Solutions with Oracle WebCenter 11g – Book Review

Introduction

Oracle Webcenter 11g is a very new product and because of that there are few books talking about it. Web 2.0 Solutions with Oracle WebCenter 11g is a very practical book that presents the main concepts of WebCenter. The book has around 250 pages, 10 chapters and lots of illustrations that make the reading very soft, fast and easy. There is also a source code (for download) that may help to accomplish the exercises that come with the book.

Some concepts (overview) that can be found in the book:

Web 2.0
Enterprise 2.0
Oracle WebCenter Suite
ADF Faces
ADF Business Components
Forum
Wiki
Blog
Search in enterprise applications
Organization with Tagging and Linking
RSS

Public

The book aims Java/Portal Developers who want to try the very first steps with WebCenter. The book helps to understand how the components work and how the main available tools can be used. It is a great book for those that are starting with ADF and WebCenter. If you already have tried by yourself the development of simple applications with Oracle WebCenter, certainly you will skip some chapters, but, if you have a good experience with the product, the book definitely is not for you.

What caught my attention

The book is practical guide to give the first steps in the WebCenter World
The “Hello World” application is very “sophisticated”, and its idea is to show a typical enterprise application architecture.
The book comes with a good material about Discussions, Wiki, and Blog Services

What I missed the most

Although it is not the focus of the book to go into questions of sophisticated software architecture, it could indicate sources to readers who want to take the next steps.
The book does not goes inside the ADF Task Flow subject, it only mentions it.

Chapters Overview

Chapter 1, What is Oracle WebCenter?

Introduction to Web 2.0, Enterprise 2.0 and Oracle WebCenter Suite

Chapter 2, WebCenter Installation and Configuration

Presents the "Webcenter Component Building Blocks"
Walkthrough to install the WebCenter Suite in a development environment.

Chapter 3, Setting up the Development Environment

Walkthrough to install JDeveloper + WebCenter Plugin + SVN

Chapter 4, Getting Started with WebCenter Development

Development of a sophisticated “Hello World” application, composed of a webservice, consumed by a portlet, consumed by a WebCenter application. This application gives a good idea of a real WebCenter application.

Chapter 5, Design and Personalization

Presents the ADF Faces Rich Client
ADF Faces components overview
Presents the ADF Business Components
Shows the development of a WebCenter Application:
- View Layer: Constructed with ADF Faces, it is composed by a template and a JSF page
- Model Layer: Constructed with ADF Business Components, it uses the schema that comes with the book (can be downloaded at the packt website)

Chapter 6, Portlets

Talk about the types of portlets you can build with WebCenter
Shows the portlet development with ADF and JSF Bridge
- View Layer: Constructed with ADF Faces, it is composed by a JSF page, exposed as a portlet –> The page uses ADF Data Visualization Components! Very cool!
- Model Layer: Constructed with ADF Business Components, it uses the same schema that comes with the book
After the portlet creation it is shown how to consume it

Chapter 7, Discussions, Wiki, and Blog Services

Presents the concepts about Forum, Wiki and Blog
Presents and shows how to use ADF TaskFlows to consume Discussion Services
Lists the ways to use Wiki and Blog. There are examples of two of then:
- Using an IFrame (included in a custom WebCenter application page)
- Using the Web Clipping portlet.

Chapter 8, Search Service

The chapter talks about the following concepts:
- Searching enterprise applications (in our case WebCenter applications)
- Organizing information with tagging and linking
- RSS and its importance
There is also examples using WebCenter applications to:

Integrate with WebCenter Tags Service (it uses ADF Security for Authentication/Authorization)
Integrate with the WebCenter Links Service
Integrate with the WebCenter RSS Service

Chapter 9, Personalization with Oracle Composer

Presents personalization for two different roles: developers and end users
As developers, we prepare a dynamic environment for end users:

Lists, explains and uses Composer’s components

As end user, we personalize the page

Resource Catalog Overview
MDS Overview

Chapter 10, Oracle WebCenter Spaces Overview

Presents Oracle WebCenter Personal Spaces: Practical guide to page creation
Presents Oracle WebCenter Group Spaces: Practical guide to group creation

Sources

I took lots of things from those sources, including whole stretches (they were perfect):
Getting Started with Oracle WebCenter 11g
Getting Started with Oracle WebCenter 11g – The Solution
WebCenter Services Capabilities
Web 2.0 Solutions with Oracle WebCenter 11g

Thursday, December 2, 2010

Happy Holidays everyone!

Wednesday, December 1, 2010

Creating a centered page layout using ADF Faces (only)

by Eduardo Rodrigues

It’s been a long time since I last posted here about my old friend: ADF. But now that I’m working in ADF BC’s awesome development team, I was already feeling the self-pressure and urge to go back to this vast subject. Let’s start easy though.

As you all might have noticed, ADF has gone a long way since it’s early days. ADF Faces 11g is quite different from its 10g predecessor. One of the differences, besides all the rich components and built-in AJAX capabilities, is the fact that some of the components that were present in 10g have moved from ADF Faces library to Apache Trinidad (or MyFaces). One of those components was the “rowLayout”. That layout component certainly makes it very easy to center its content in relation to the entire page, both horizontally and vertically. However, using Trinidad components ad tag libraries alongside with ADF Faces, although possible, may not be always desired. So, the question is: how to achieve same layout using only ADF Faces’ layout manager?

If you’re somewhat used to the particularities of ADF Faces’ layout manager, you probably already know that setting up a container that not only stretches 100% of the page’s (or of its parent container’s) height but also centers its content vertically is not as easy and straightforward as one would think.

Thinking fast, the first approach most come up with (including myself) is this:

panelStretchLayout (only center facet enabled) > panelGroupLayout (Layout = horizontal ; Valign = middle) > panelGroupLayout (Layout = vertical ; Halign = center)

Pretty intuitive and simple, right? Yes! But the layout manager doesn’t seem to agree.

The problem with this layout structure is basically the fact that a horizontal panelGroupLayout does not support being stretched inside a panelStretchLayout facet. This is actually clearly documented: http://goo.gl/GYVud

After a lot of trial-and-fail, I eventually found a way (thanks to my good friends and ADF gurus Maiko Rocha and George Maggessy).

The layout structure is this:

panelStretchLayout (top, bottom and center facets enabled; TopHeight = 33% ; BottomHeight = 33%) > panelGroupLayout (Layout = vertical ; Halign = center)

Even if you don’t need any content going in the Top or Bottom facets, it’s important to add at least an empty panelGroupLayout to both of them just to ensure the specified 33% of height will be allocated.

To wrap up, here’s a complete source code example of a page with a page-centered login form:

<?xml version='1.0' encoding='UTF-8'?>
<jsp:root xmlns:jsp="http://java.sun.com/JSP/Page" version="2.1"
          xmlns:f="http://java.sun.com/jsf/core"
          xmlns:af="http://xmlns.oracle.com/adf/faces/rich">
  <jsp:directive.page contentType="text/html;charset=UTF-8"/>
  <f:view>
    <af:document id="d1" title="Login Page">
      <af:form id="f1" defaultCommand="#{'pgTplt:cbLogin'}">
            <af:panelStretchLayout id="psl1" startWidth="33%" endWidth="33%"
                                   topHeight="33%" bottomHeight="33%">
              <f:facet name="center">
                <af:panelGroupLayout id="pgl1" layout="vertical"
                                     halign="center">
                  <af:panelFormLayout id="pflLogin" rows="2" maxColumns="1">
                    <af:inputText id="itUsername" label="Username"
                                  value="#{Login.username}"/>
                    <af:inputText label="Password" id="itPassword" secret="true"
                                  value="#{Login.password}"/>
                    <af:spacer width="10" height="10" id="s1"/>
                    <af:commandButton text="Login" id="cbLogin"
                                      actionListener="#{Login.doLogin}"/>
                  </af:panelFormLayout>
                </af:panelGroupLayout>
              </f:facet>
              <f:facet name="bottom">
                <af:panelGroupLayout id="pgl2"/>
              </f:facet>
              <f:facet name="top">
                <af:panelGroupLayout id="pgl3"/>
              </f:facet>
            </af:panelStretchLayout>
      </af:form>
    </af:document>
  </f:view>
</jsp:root>

And this is how the page above should look like:

Wednesday, November 24, 2010

Our second official book review in on its way...

by Fábio Souza

Hi everyone, are you doing well? I'm fine, thanks for asking.
Well, I was wondering these days : "It would be a good idea to change the topic for a little while and talk about a product". It seems that someone at Packt Publishing heard me, and, to incentive myself, they invited us to write a review of a new book .
The topic is hot: Webcenter 11g. As you all know (I hope :)) this is a strategic product that arose to compete in the Enterprise 2.0 market.

The book is:
Web 2.0 Solutions with Oracle WebCenter 11g

I'm very excited to read the book, but I can already tell you some good things about it:
- Vince Casarez is one of its reviewers
- It covers all the product's main points (installation, environment setup, custom applications, and so on)
- There is a Oracle WebCenter Spaces Overview

I hope to be posting the review soon!

Ahhh! I almost forgot (kidding, I was planning it) to say that our big friend and also architect master, George Maggessy, helped the writers with his WebCenter knowledge.

See you!

Saturday, July 17, 2010

JDeveloper Overview and (book) Review

Dear visitors,
I will pretend I forgot that I'm about a year without posting anything and I will go straight to the subject that I owe to you: The review of the book "Processing XML documents with Oracle JDeveloper 11g". Before start I would like to make an introduction to JDeveloper.

About JDeveloper