private class LdapIdentity implements Closeable {

            private final String name;
            private final DirContext dirContext;
            private final String distinguishedName;
            private final SearchResult entry;

            LdapIdentity(String name, DirContext dirContext, String distinguishedName, SearchResult entry) {
                this.name = name;
                this.dirContext = dirContext;
                this.distinguishedName = distinguishedName;
                this.entry = entry;
            }

            String getName() {
                return this.name;
            }

            DirContext getDirContext() {
                return this.dirContext;
            }

            String getDistinguishedName() {
                return this.distinguishedName;
            }

            SearchResult getEntry() {
                return this.entry;
            }

            @Override
            public void close() throws IOException {
                try {
                    dirContext.close();
                } catch (NamingException e) {
                    log.debug("LdapSecurityRealm failed to close DirContext", e);
                }
            }
        }