Implementing Ldap Persistent search using apache directory api

[Narendra Kadali]

Hi All,
 
I am new to this apache directory api and there is no documentation available. 
I need to implement directory persistance search using this api.
 
Can any one give me sample code for implementing my scenario or any refrences 
for doing this.
 
Any help in this regard really appreciated.
 
Thanks,
Narendra