Java tutorial
/* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.apache.jackrabbit.oak.security.user.autosave; import java.util.Iterator; import com.google.common.base.Function; import com.google.common.collect.Iterators; import org.apache.jackrabbit.api.security.user.Authorizable; import org.apache.jackrabbit.api.security.user.Group; final class AuthorizableWrapper<T extends Authorizable> implements Function<T, T> { private final AutoSaveEnabledManager mgr; private AuthorizableWrapper(AutoSaveEnabledManager mgr) { this.mgr = mgr; } @Override public T apply(T authorizable) { if (authorizable == null) { return null; } else { return (T) mgr.wrap(authorizable); } } static Iterator<Authorizable> createIterator(Iterator<Authorizable> dlgs, AutoSaveEnabledManager mgr) { return Iterators.transform(dlgs, new AuthorizableWrapper(mgr)); } static Iterator<Group> createGroupIterator(Iterator<Group> dlgs, AutoSaveEnabledManager mgr) { return Iterators.transform(dlgs, new AuthorizableWrapper(mgr)); } }