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Posts Tagged ‘JAVA’

Scanean: an Android application prototype

20 Oct

1 – Introduction

With this post I want to introduce an Android application prototype that was presented in the 2009′s SeedRocket edition.

SeedRocket (www.seedrocket.com) is an initiative founded by a group of entrepreneurs, experienced business and venture capitalists across Europe.
It gives from € 20,000 to € 100,000 to the winners and assigned a mentor to assist entrepreneurs in the start phase.

2 – Story

The prototype development was started in June 2009 by a group of 3 people:

Josè Diaz
 Giovanni Mangani
 Javier Rincòn

The proposed application ElMejorPrecio (Scanean, later), based on PHP/MySql + Android/Zxing technologies, reached the 3rd position in the final selection (not bad for a one month development!).

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15 Comments

Posted in Development, Mobile

 

Decompile, modify and deploy java libraries by focusing on the Oracle Identity Manager case of study

13 Oct

1 – Introduction

Lately I have been asked to solve the following problem with the ReconciliationEvent91.jar package for Oracle Identity Manager:

trace log

ERROR,06 Oct 2010 15:12:40,362,[XELLERATE.WEBAPP],Class/Method: tcActionBase/execute encounter some problems: java.util.Collections$UnmodifiableMap cannot be cast to java.util.HashMap
java.lang.ClassCastException: java.util.Collections$UnmodifiableMap cannot be cast to java.util.HashMap
        at com.oracle.oim.ocs.reconciliationEvents91.ReconciliationEventsAction.getSelectedValuesToLink(ReconciliationEventsAction.java:438)
        at com.oracle.oim.ocs.reconciliationEvents91.ReconciliationEventsAction.handleStatusButtons(ReconciliationEventsAction.java:333)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)

...

Basing on the steps taken to solve this issue, I want to write down the main guidelines to decompile, modify and repackage existing jar files; I want also to put the focus on Oracle Identity Manager cause by my experience the following steps are more or less the same that should be used whenever you need to add custom backend functionalities to the product.

2 – Prerequisites

You will need the following:

- The last version of the JAVA SDK (You could need the J2EE libraries also)
- A JAVA IDE (Oracle JDeveloper 11g has been used in this case)
-  A JAVA decompiler tool (JAD has been used http://www.varaneckas.com/jad)

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Posted in Development, Identity Management, SOA