kBLOG » oracle

Using Groovy to Retrieve Current logged in user name

agawish — Mon, 12 Dec 2011 08:23:55 +0000

This is a cross post with mdlwr blog

One tip I found Useful, and I didn’t find enough resources talking about it, is how to populate a value of Entity Attribute or Binding Value with the current logged in user using Groovy

Simply use this:
adf.context.securityContext.getUserPrincipal().getName()
Piece of cake

Oracle JDeveloper Git Plugin

agawish — Sun, 11 Dec 2011 23:36:33 +0000

This is a cross post with mdlwr blog

So I love git, and I Love GitHub and since I use them both, and I use JDeveloper I though of developing a plugin for JDeveloper to integrate with Git and GitHub eventually

Here is my Attempt of doing so:

I Introduce to you: JDeveloper Git Extension 1.0.0 Beta Version which works on JDeveloper 11.1.1.5 JDeveloper (Will be working on migrating it to 11.1.2.x soon)

The project is divided into different phases:

Phase #1: Cloning Git Repository into JDeveloper Project (Completed)

Phase #2: Provide the Files Action and overlay (To push, pull, commit, checkout, add to ignore list and more ..)

Phase #3: Provide an Integration with GitHub

So Far I’ve finished Phase #1

It’s simple, you simply choose a project > New > General > Projects > Clone Git Repository

And enter the URL of the Git Repository and the select the Project you want to Install the files to

Once you finish, you should recieve a Success Message telling you everything is Good for, a simple refresh to your project you can see all the new files exported from Git.

If you tried to clone to a project that has been already cloned an Error message will popup telling you, you shouldn’t do that!

Simple isn’t it…

Check out the Photos, and for any one who dares enough to try it download it from here

Creating Utilities to manipulate users in #Weblogic using #JMX and #MBeans

agawish — Wed, 19 Oct 2011 18:46:32 +0000

This is a cross post from mdlwr

Intro

First I’d like to apologies for the big absent on my side as I was very busy traveling to KSA for a new freelancing Client, but anyway I hope this article make you forgive me

Weblogic is a great Application Server, and the one you can count on for your heavy industrial deployment, load balancing, high availability and clustering.

Not only that but it comes with a great scripting tool WLST and the standardization of accessing its MBeans through JMX

There were an old school approach which would allow you to access MBeans through Weblogic APIs itself like so

import weblogic.management.Helper;
import weblogic.management.MBeanHome;
public class UseHelper {
    public static void main(String[] args) {
        String url = "t3://localhost:7001";
        String username = "weblogic";
        String password = "weblogic";
        String msName = "MS1";
        MBeanHome localHome = null;
        try {
            localHome = (MBeanHome)Helper.getMBeanHome(username, password, url,
                       msName);
            System.out.println("Local MBeanHome for" + localHome +
                       " found using the Helper class");
        } catch (IllegalArgumentException iae) {
            System.out.println("Illegal Argument Exception: " + iae);
        }
    }
}

But as you write this in your JDeveloper or favorite Editor, you will realize that this has been deprecated!

So the better alternative, and the hard way around it is to use JMX

The Definition

JMX(Java Management Extension) is a technology that represents a universal, open technology for management, and monitoring applications, system objects, devices (e. g. printers) and service oriented networks. Those resources are represented by objects called MBeans (for Managed Beans)

So Enough with the definitions, lets get to work.

The Utility Class

What we want here is accessing Weblogic MBeans to get Users for DefaultAuthenticator -Default authenticator on Weblogic and Get Users, Groups and doing some manipulation like adding, editing, deleting and reset password for users in Weblogic Default Authenticator -You can edit it to suit your need but remember if the authenticator is read only you will get exceptions trying to alter users.

So lets get Started, first by checking MBeans Reference We will realize that in Order to access the Users we have to go this path:

Configuration MBeans
- Domain Configuration MBeans
  - Security Configuration MBean
    - Default Realm (Attribute of Security Configuration MBean and an instance of RealmMBean)
      - AuthenticationProviders (Attribute of Default Realm and an instance of AuthenticationProviderMBean[])

So How do we do that, let’s start write some code

The Initialization Code

We will start my making a connection to Weblogic Server instance, and then drill down to AuthenticationProviderMBean(s)
Remember this is a utilities Class, that’s why all of my methods will be static

/****** DEFINING SOME STATIC VARIABLES ********/
public static final String JNDI_FACTORY = "weblogic.jndi.WLInitialContextFactory";
public static final String MBEAN_SERVER = "weblogic.management.mbeanservers.domainruntime";
public static final String JNDI_ROOT = "/jndi/";
public static final String DEFAULT_PROTOCOL = "t3";
public static final String PROTOCOL_PROVIDER_PACKAGES = "weblogic.management.remote";
//This how we get our DomainRuntimeService, this is where DomainConfigurationMBeans exists
public static final String DOMAIN_MBEAN_NAME = "com.bea:Name=DomainRuntimeService,Type=weblogic.management.mbeanservers.domainruntime.DomainRuntimeServiceMBean";
private static MBeanServerConnection connection;
private static ObjectName defaultAuthenticator;
private static ObjectName[] authenticationProviders;
private static String authenticatorName="DefaultAuthenticator";

Okay, now we defined it, let’s drill down to our AuthenticationProviders

static {
        try {
            String host = "127.0.0.1";
            String port = "7101";
            String username = "weblogic";
            String password = "weblogic1";
            Hashtable h = new Hashtable();
            JMXServiceURL serviceURL;
 
            serviceURL =
                    new JMXServiceURL(DEFAULT_PROTOCOL, host, Integer.valueOf(port).intValue(),
                                      "/jndi/weblogic.management.mbeanservers.domainruntime");
 
            h.put("java.naming.security.principal", username);
            h.put("java.naming.security.credentials", password);
            h.put("jmx.remote.protocol.provider.pkgs",
                  "weblogic.management.remote");
 
            //Creating a JMXConnector to connect to JMX
            JMXConnector connector =
                JMXConnectorFactory.connect(serviceURL, h);
 
            connection = connector.getMBeanServerConnection();
 
            /****
              We Get Objects by creating ObjectName with it's Qualified name.
              The constructor take a String of the full Qualified name of the MBean
              We then use connection to get Attribute out of this ObjectName but specifying a String of
              this Attribute
              *****/
 
            ObjectName configurationMBeans=
                new ObjectName(DOMAIN_MBEAN_NAME);
            ObjectName domain =
                (ObjectName)connection.getAttribute(configurationMBeans, "DomainConfiguration");
 
            ObjectName security =
                (ObjectName)connection.getAttribute(domain, "SecurityConfiguration");
 
            ObjectName realm =
                (ObjectName)connection.getAttribute(security, "DefaultRealm");
 
            authenticationProviders =
                    (ObjectName[])connection.getAttribute(realm,
                                                          "AuthenticationProviders");
 
            for (int i = 0; i &lt; authenticationProviders.length; i++) {
                String name =
                    (String)connection.getAttribute(authenticationProviders[i],
                                                    "Name");
 
                if (name.equals(authenticatorName))
                    defaultAuthenticator = authenticationProviders[i];
            }
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

WOHOO you’ve done a great step, you now have a reference to the defaultAuthenticator MBean, now you can make operations on users and Groups

Deep inside DefaultAuthenticatorMBean

If you looked at the reference of DefaultAuthenticatorMBean which is a subclass of AuthenticationProviderMBean you will realize the following:

Attributes

Operations

Now I guess you know what do we need to do right, Excellent so lets get it done

The User/Group Manipulation

public static boolean addUser(String username, String psw, String desc) {
        try {
            /** As of connection.getAttribute you can use connection.invoke to invoke an action
                It Takes ObjectName, String OperationName, Object[] Parameters, and String[] Parameters
                Definition
            **/
            connection.invoke(defaultAuthenticator, "createUser",
                              new Object[] { username, psw, desc },
                              new String[] { "java.lang.String",
                                             "java.lang.String",
                                             "java.lang.String" });
 
            return true;
        } catch (Exception e) {
            return false;
            //throw new RuntimeException(e);
        }
    }
 
    public static boolean removeUser(String username) {
        try {
            if (!username.equalsIgnoreCase("weblogic")) {
                connection.invoke(defaultAuthenticator, "removeUser",
                                  new Object[] { username },
                                  new String[] { "java.lang.String" });
            }
 
            return true;
        } catch (Exception e) {
            e.printStackTrace();
        }
        return false;
    }
 
    public static boolean resetUserPassword(String username,
                                            String newPassword) {
        try {
            if (!username.equalsIgnoreCase("weblogic")) {
                connection.invoke(defaultAuthenticator, "resetUserPassword",
                                  new Object[] { username, newPassword },
                                  new String[] { "java.lang.String",
                                                 "java.lang.String" });
            }
 
            return true;
        } catch (Exception e) {
            e.printStackTrace();
        }
        return false;
    }
 
           /** As of connection.getAttribute you can use connection.invoke to invoke an action
                It Takes ObjectName, String OperationName, Object[] Parameters, and String[] Parameters
                Definition, It returns an Object we cast it to Boolean, you can know all about function from 
                MBeans Reference
            **/
    public static boolean isUserExists(String currentUser) throws RuntimeException {
        try {
            boolean userExists =
                ((Boolean)connection.invoke(defaultAuthenticator, "userExists",
                                            new Object[] { currentUser },
                                            new String[] { "java.lang.String" })).booleanValue();
 
            return userExists;
        } catch (Exception ex) {
throw new RuntimeException(ex);
        }
    }
 
    public static boolean isGroupExists(String currentGroup) throws RuntimeException {
        try {
            boolean gourpExists =
                ((Boolean)connection.invoke(defaultAuthenticator,
                                            "groupExists",
                                            new Object[] { currentGroup },
                                            new String[] { "java.lang.String" })).booleanValue();
 
            return gourpExists;
        } catch (Exception ex) {
            throw new RuntimeException(ex);
        }
    }
 
 
    /** This one is tricky, You first obtain a String cursor of the Iterator of Users, then you check if
        It have current, while true we invoke another function called "getCurrentName" which returns the name 
        of the user, then I call advance function for the cursor to move forward, and invoke haveCurrent again
        and assign it to the same boolean I entered the while with (In order to get out of it!)
    **/
    public static List<String> getListOfUsers() throws RuntimeException {
        try {
            List<String> allUsers = new ArrayList<String>();
 
            String cursor =
                (String)connection.invoke(defaultAuthenticator, "listUsers",
                                          new Object[] { "*",
                                                         Integer.valueOf(9999) },
                                          new String[] { "java.lang.String",
                                                         "java.lang.Integer" });
 
            boolean haveCurrent =
                ((Boolean)connection.invoke(defaultAuthenticator,
                                            "haveCurrent",
                                            new Object[] { cursor },
                                            new String[] { "java.lang.String" })).booleanValue();
 
            while (haveCurrent) {
                String currentName =
                    (String)connection.invoke(defaultAuthenticator,
                                              "getCurrentName",
                                              new Object[] { cursor },
                                              new String[] { "java.lang.String" });
 
 
                allUsers.add(currentName);
                connection.invoke(defaultAuthenticator, "advance",
                                  new Object[] { cursor },
                                  new String[] { "java.lang.String" });
 
                haveCurrent =
                        ((Boolean)connection.invoke(defaultAuthenticator, "haveCurrent",
                                                    new Object[] { cursor },
                                                    new String[] { "java.lang.String" })).booleanValue();
            }
 
            return allUsers;
        } catch (Exception ex) {
            throw new RuntimeException(ex);
        }
    }
 
    public static List<String> getUserGroups(String username) throws RuntimeException {
        try {
            List<String> allUserGroups = new ArrayList<String>();
 
            String cursor =
                (String)connection.invoke(defaultAuthenticator, "listMemberGroups",
                                          new Object[] { username },
                                          new String[] { "java.lang.String"});
 
            boolean haveCurrent =
                ((Boolean)connection.invoke(defaultAuthenticator,
                                            "haveCurrent",
                                            new Object[] { cursor },
                                            new String[] { "java.lang.String" })).booleanValue();
 
            while (haveCurrent) {
                String currentName =
                    (String)connection.invoke(defaultAuthenticator,
                                              "getCurrentName",
                                              new Object[] { cursor },
                                              new String[] { "java.lang.String" });
 
                allUserGroups.add(currentName);
 
                connection.invoke(defaultAuthenticator, "advance",
                                  new Object[] { cursor },
                                  new String[] { "java.lang.String" });
 
                haveCurrent =
                        ((Boolean)connection.invoke(defaultAuthenticator, "haveCurrent",
                                                    new Object[] { cursor },
                                                    new String[] { "java.lang.String" })).booleanValue();
            }
 
            return allUserGroups;
        } catch (Exception ex) {
            throw new RuntimeException(ex);
        }
    }
 
 
    public static List<String> getGroupMembers(String groupName) throws RuntimeException {
        try {
            List<String> allGroupMembers = new ArrayList<String>();
 
            String cursor =
                (String)connection.invoke(defaultAuthenticator, "listGroupMembers",
                                          new Object[] { groupName, "*", new java.lang.Integer(0) },
                                          new String [] { "java.lang.String", "java.lang.String", "java.lang.Integer" });
 
            boolean haveCurrent =
                ((Boolean)connection.invoke(defaultAuthenticator,
                                            "haveCurrent",
                                            new Object[] { cursor },
                                            new String[] { "java.lang.String" })).booleanValue();
 
            while (haveCurrent) {
                String currentName =
                    (String)connection.invoke(defaultAuthenticator,
                                              "getCurrentName",
                                              new Object[] { cursor },
                                              new String[] { "java.lang.String" });
 
                allGroupMembers.add(currentName);
 
                connection.invoke(defaultAuthenticator, "advance",
                                  new Object[] { cursor },
                                  new String[] { "java.lang.String" });
 
                haveCurrent =
                        ((Boolean)connection.invoke(defaultAuthenticator, "haveCurrent",
                                                    new Object[] { cursor },
                                                    new String[] { "java.lang.String" })).booleanValue();
            }
 
            return allGroupMembers;
        } catch (Exception ex) {
            throw new RuntimeException(ex);
        }
    }
 
    public static List<String> getListOfGroups() throws RuntimeException {
        try {
            List<String> allUsers = new ArrayList<String>();
 
            String cursor =
                (String)connection.invoke(defaultAuthenticator, "listGroups",
                                          new Object[] { "*",
                                                         Integer.valueOf(9999) },
                                          new String[] { "java.lang.String",
                                                         "java.lang.Integer" });
 
            boolean haveCurrent =
                ((Boolean)connection.invoke(defaultAuthenticator,
                                            "haveCurrent",
                                            new Object[] { cursor },
                                            new String[] { "java.lang.String" })).booleanValue();
 
            while (haveCurrent) {
                String currentName =
                    (String)connection.invoke(defaultAuthenticator,
                                              "getCurrentName",
                                              new Object[] { cursor },
                                              new String[] { "java.lang.String" });
 
                allUsers.add(currentName);
 
                connection.invoke(defaultAuthenticator, "advance",
                                  new Object[] { cursor },
                                  new String[] { "java.lang.String" });
 
                haveCurrent =
                        ((Boolean)connection.invoke(defaultAuthenticator, "haveCurrent",
                                                    new Object[] { cursor },
                                                    new String[] { "java.lang.String" })).booleanValue();
            }
 
            return allUsers;
        } catch (Exception ex) {
            throw new RuntimeException(ex);
        }
    }

And that’s it, Enjoy your Weblogic Utilities Class

What is Oracle WebCenter Connect

agawish — Sat, 16 Jul 2011 14:25:26 +0000

In my Previous Post I pointed out the new WebCenter Strategy that Oracle Presented, which includes four products

WebCenter Sites – A WEM (Web Experience Management) System which FatWire Acquisition played a great role of making
WebCenter Portal – The old definition of Oracle WebCenter Suite including WebCenter Interaction, WebLogic Portal
WebCenter Content – Which is the new name of Oracle ECM which was acquired from Stellent by Oracle
WebCenter Content – From which I want to point out new information about it

As Oracle says, the WebCenter Connect consists of three major products

1- Oracle On Track Communication

This is the main component of Connect which in my mind is going to be a blow in the WebCenter Products, because of it’s structure and paradigm.It uses a different model, than we we would originally think, and that is the ConversationA Conversation is a way of communication, think of it like an email, a presentation, a chat, document annotations or even a video call, this is all a conversation material, you can make a conversation with a person using those stuff, but further more this conversation is a needed assets in the now application for historical and referencing reason, so it can be categorized into more stuff, like a Task for example, a task can be a set of Conversations that have specific metadata like assigned person and stuff, and the conversation content can be attached files of the task content itself or can be consultation help of this task, or even a voice recording about description of this Task, take this example and expand it to cover Projects, Meetings and more, it’s like the Google Wave project with some cool plugins for browser and Outlook and mobility focused application like iPhone and iPad you have what you need to do things for the enterprise on Go.What will be amazing, is how this capabilities gonna be integrated in the new WebCenter SuiteHere is some Screen shots of the product:

2- Oracle WebCenter Real-Time Collaboration

This is the old WebCenter Collaboration Server which improves efficiency and productivity by enabling users to connect and collaborate with others via instant messaging, presence, chat rooms, and web and voice conferencing, it’s a key piece for portal if you want to enable rich interaction between users and provide a more connectable Portals, and it’s available as part of the Beehive Product

3- Oracle WebCenter Intelligent Collaboration

Oracle WebCenter Intelligent Collaboration (WebCenter IC) is a unique connection brokering solution that gives employees a way to easily reach out to the most knowledgeable people throughout your organization to get the critical insights and information they need to make smarter business decisions. Unlike other expertise search or expertise location solutions out there, WebCenter IC doesn’t rely on users having to manage profiles, or publish tags that describe their expertise, or even share any information or activities with others. Instead, the WebCenter IC system builds rich, private profiles of all employees and then acts as a broker between a person needing help on a topic and the people that are most knowledgeable about that topic. Without revealing the identity or profiles of those targeted, the system sends them ‘invitations to connect’ and only when the person opts-in to respond is his or her identity revealed.

So now the important question, how those products will fit under the WebCenter Umbrella and play nicely with WebCenter Portal, Sites and Content

Oracle WebCenter Changes its face…again!

agawish — Thu, 14 Jul 2011 08:54:06 +0000

After the migration of BEA AquaLogic Interaction into WebCenter Interaction suite, Oracle made a new advancement after acquiring FatWire, and after the acquisition of Stellent Content Management System, Oracle has announced the WebCenter Suite strategy as follows:

WebCenter Sites

This is the WEM (Web Experience Management) Functionality that Oracle talked about when acquired FatWire, and it’s different that a normal WCM (Web Content Management) see this article, there is no talk of how this feature gonna be from oracle, but soon enough we will know, however oracle defines the product as :Oracle WebCenter sites enables marketers to rapidly create multiple online experiences that strengthen customer engagement. It allows them to reduce maintenance demands on IT while gaining more control over dynamic targeted content to promote customer loyalty and increase revenue.Waiting to see more about WebCenter Sites
WebCenter Portal

This is basically the old WebCenter Suite as we used to know it, including Oracle Weblogic Portal and Oracle WebCenter Interaction suite plus WebCenter Servies, oracle defines the product as:Oracle WebCenter portal is a portal and composite applications solution that delivers intuitive user experiences for the enterprise that are seamlessly integrated with your enterprise applications.
WebCenter Content

This was a shock to me, because this is Oracle ECM in its new name, and hopefully new face.
This will be the official name for Oracle ECM from now on, so ECM people should get used to it!, and here is the oracle definition of the productOracle WebCenter content provides organizations with a unified repository to house unstructured content, and deliver it to business users in the proper format, and within context of familiar applications to fit the way they work.
WebCenter Connect

Stream Based Conversation System, That’s how oracle made it look like, This is also a new thing that oracle introduces, to know more read this post, or read the definition of the product from Oracle:Oracle WebCenter connect provides an innovative social experience designed to drive collaborative decision making within businesses through a modern web experience and consumer style design that delivers a highly engaging environment to focus productivity.Waiting to see more about this interesting news, don’t you!

My Next Projects

agawish — Sat, 13 Nov 2010 00:42:11 +0000

So I was busy in the last couple of weeks, doing multiple work with ADF with RIDC

I have to admit, RIDC really ROX, and also working with SOA 11g and how SOA literally changing my life -to the better-.

I bought the book Oracle SOA Suite 11g Handbook It’s really amazing, not only from technical point of view, but the case study that is presented in the book is more than beautiful, the book teaches how to Think in SOA not just what component does what in Oracle SOA Suite.

The topic that interest me the most is Complex Event Processing or CEP, CEP importance is everywhere and who doesn’t need to search for patterns in the data to take decisions, and all the big companies have this critical business that needs to process data real time for such patterns to take actions.

Add to that my journey with WebCenter Spaces and how to fully customize and extending it, and how can this amazingly beautiful product to have such a capabilities and integration methodologies, they took a lot from WebCenter Interaction -The best in WCI- and added more of Social Activities and Web2.0 enhancements with the powerfulness of Weblogic, you got a complete stack -Slow but Powerful- (Slow as I’m testing all that in a single machine!)

I’m really having a great journey with Oracle Fusion Middleware and my next couple of Articles I’ll be presenting some of its powerfulness with some cool tutorials I promise, and It’ll be presented in the mdlwr blog.

During this time also, I’ll try my best to provide an enhancement to the Android Browser WebView to enable Android Devices to read basic Arabic letter, with the latest BAR source control, after enhancements.

I’m planning also to buy the HTC Desire HD to test my solution, and see the application live working.

Wish me Luck!

Going Production

agawish — Wed, 27 Oct 2010 16:46:36 +0000

No matter how hard you try to make your development environment as close as possible to your production, you get disappointed by a lot of errors in production mode!
Experience is what helps you in that issue, but even with experience the migration process from development to production still can be very painful.

But…I can proudly say, that you won’t face such a trouble with WebCenter Interaction!

Thanks to the WebCenter Interaction Migration mechanism, which export portal object in a .pte (PorTal Extension) to be imported easily with their dependencies and parents, the migration process couldn’t be easier, and it took me about ummm 30 minutes, to transfer more than 50 Community, 100 pages, layouts and custom portlets with it’s related dependencies (Includes copying and pasting files from both servers!).

So bad that WCI is no longer in strategic products of Oracle, it could be the best out there

Creating Oracle UCM portlet in easy steps

agawish — Sun, 26 Sep 2010 13:22:01 +0000

I’ve published another post in my mdlwr blog named Creating Oracle UCM portlet in easy steps

Here is a head start, and enjoy the rest on mdlwr with Oracle Middleware Products

I recently faced a requirements when the customer needed to display a custom portlet of Oracle UCM specific Document Type in WebCenter Interaction, and those who don’t know WebCenter Interaction aka WCI aka AquaLogic User Interaction aka ALUI, should read about it!

Anyway so I went through UCM Content Portlet Suite (CPS), and I found the search but, the customer wanted a thumbnail (Rendition) of the document to be displayed!

After searching online I found an amazing article on different ways to integrate WebCenter application with Oracle ECM, of course the author was talking about Oracle WebCenter not Oracle WebCenter Interaction -There are differences, huge ones!- but one of the ways specifically interested me, that is using JSON output of the UCM services to be parsed using Javascript and do the work needed.

So HTML pages, can display content from UCM using Javascript and JSON Parsing, COOL!

So instantly -actually 2 weeks later!- I started to dig out how to deal with this JSON object returned, and how can I use it to fulfill my needs.

The author of the Video/Article gave 2 simple examples, Showing the folder structure of the UCM and to search UCM, using the Ajax way!

So as I wanted to get the result of a specific document type, so I was interested in his last example,

1- How can I tune his search query to give me what I need?,

2- How can I actually get the rendition of the file? and

3- How can I know the image path using the rendition?

Read the rest on mdlwr

ADF Desktop Integration

agawish — Tue, 08 Jun 2010 22:57:35 +0000

This is a great news, now you can make an ADF application all within the excel with real life data and actions from ADF and ADF binding.

I can’t wait to test and see how this works

check it out http://www.oracle.com/technology/products/adf/adfdi/index.html

Middleware mdlwr Blog

agawish — Sun, 11 Apr 2010 11:12:06 +0000

I’ve though about this long time ago, but I didn’t have the courage nor the content to start it.

Now that I do have the courage -content is on the way!- to announce the blog mdlwr you can go directly check it, or you can see its latest news via twitter