implementation of the details objects

UserService.java

    public static class CrmUserDetails implements UserDetails {

        public static final String SCOPE_READ = "read";
        public static final String SCOPE_WRITE = "write";
        
        public static final String ROLE_USER = "ROLE_USER";
        
        private Collection<String> roles;

        private Collection<GrantedAuthority> grantedAuthorities;
        private User user;
        public CrmUserDetails(User user) {
            assert user != null : "the provided user reference can't be null";
            this.user = user;
            this.roles = Arrays.asList(ROLE_USER, SCOPE_READ, SCOPE_WRITE);
            this.grantedAuthorities = Collections2.transform(this.roles, new Function<String, GrantedAuthority>() {
                @Override
                public GrantedAuthority apply(String input) {
                    return new SimpleGrantedAuthority(input);
                }
            });
        }

        @Override
        public Collection<? extends GrantedAuthority> getAuthorities() {
            return this.grantedAuthorities;
        }

        @Override
        public String getPassword() {
            return this.user.getPassword();
        }

        @Override
        public String getUsername() {
            return this.user.getUsername();
        }

        @Override
        public boolean isAccountNonExpired() {
            return isEnabled();
        }

        @Override
        public boolean isAccountNonLocked() {
            return isEnabled();
        }

        @Override
        public boolean isCredentialsNonExpired() {
            return isEnabled();
        }

        @Override
        public boolean isEnabled() {
            return user.isEnabled();
        }

        public User getUser() {
            return this.user;
        }

    }