When customizing the LDAP search filter used by ActiveDirectoryLdapAuthenticationProvider I have a need to reference just the username. The default {0} is username@domain. This small change will allow filters to reference the username with {1}

Example:

userPrincipalName = someUser@bar.com
sAMAccountName = someUser
Domain Name: foo

Trying to set the filter to use sAMAccountName instead of userPrincipalName results in the domain name being included.

provider.setSearchFilter("(&(objectClass=user)(sAMAccountName={0}))");

Results in (&(objectClass=user)(sAMAccountName=someUser@bar.com))

This code change will let me use {1} in the filter instead so the search will be: (&(objectClass=user)(sAMAccountName=someUser))

I was unable to simply extend ActiveDirectoryLdapAuthenticationProvider because it is marked final.