Creating a Symbolic Link (Hard Link) in windows

Use this to create a hard link so that you can compile files in source control without issues. 

mklink /J C:\Oracle\JDeveloper11117 C:\Oracle\Middleware1117

mklink /J <New Link Name>  <Destination folder lcoation>

System Folder Delete And Recover Artifacts ( DataSource , Repository URLS)

This post talks about how to take backup of configured datasources and repository (SVN) connection.

Follow these steps :

STEP 1 :

Take a back up of below files before you delete the old system folder

• SYSTEM_FOLDER\DefaultDomain\config\config.xml
• SYSTEM_FOLDER\DefaultDomain\config\jdbc

Folder

• SYSTEM_FOLDER\o.jdeveloper.subversion\repositories.xml

STEP 2 :

Now delete the systemFolder

STEP 3:

Restore configurations

Copy the jdbc-system-resource elements into config.xml from the backup config.xml
Copy the contents of jdbc from the back up into the new jdbc folder
Create a dummy repository connection and Copy the svn-repository elements from the back up repositories.xml

Note that these steps only restore the SVN repositories and data sources.

Unfortunately all the encrypted passwords got corrupted.

So had to clear the password save and reset the passwords.

Enjoy!!!

Hierarchical Dropdown in ADF

This post talks about how to display hierarchical dropdown in selectOneChoice.

There is one method explained by Frank here. Well this method show two levels in hierarchical dropdown using two af:ForEach iteration.

What if we have multiple level, and don't know how many af:forEach would be required. Other approach is to achieve required spaces through query to show dropdown structure. Thanks to my friend Prahlad for sharing this.

In below query, emp_disp will have appropriate spaces based on the level of the employee in the employee hierarchy.

select LEVEL,FIRST_NAME,LAST_NAME,
LPAD(FIRST_NAME ||' '|| LAST_NAME,length(FIRST_NAME ||' '|| LAST_NAME)+(LEVEL-1)*4,unistr('\00A0\00A0\00A0\00A0')) emp_disp
from EMPLOYEES
start with MANAGER_ID is null
connect by prior EMPLOYEE_ID = MANAGER_ID;

All you need to do is create a VO with above sample query and use this for dropdown.

Sample is uploaded here..

Enjoy.