package org.springframework.social.flickr.user; import java.util.concurrent.atomic.AtomicLong; import org.springframework.social.connect.Connection; import org.springframework.social.connect.ConnectionSignUp; public final class SimpleConnectionSignUp implements ConnectionSignUp { private final AtomicLong userIdSequence = new AtomicLong(); public String execute(Connection<?> connection) { return Long.toString(userIdSequence.incrementAndGet()); } }