| /* |
| * 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.spi.security.principal; |
| |
| import java.security.Principal; |
| import java.util.Collection; |
| import java.util.Iterator; |
| |
| import org.apache.jackrabbit.api.security.principal.PrincipalIterator; |
| import org.apache.jackrabbit.commons.iterator.RangeIteratorAdapter; |
| import org.apache.jackrabbit.commons.iterator.RangeIteratorDecorator; |
| |
| /** |
| * Principal specific {@code RangeIteratorAdapter} implementing the |
| * {@code PrincipalIterator} interface. |
| */ |
| public class PrincipalIteratorAdapter extends RangeIteratorDecorator implements PrincipalIterator { |
| |
| /** |
| * Static instance of an empty {@link PrincipalIterator}. |
| */ |
| @SuppressWarnings("unchecked") |
| public static final PrincipalIteratorAdapter EMPTY = |
| new PrincipalIteratorAdapter((Iterator<? extends Principal>) RangeIteratorAdapter.EMPTY); |
| |
| /** |
| * Creates an adapter for the given {@link java.util.Iterator} of principals. |
| * |
| * @param iterator iterator of {@link java.security.Principal}s |
| */ |
| public PrincipalIteratorAdapter(Iterator<? extends Principal> iterator) { |
| super(new RangeIteratorAdapter(iterator)); |
| } |
| |
| /** |
| * Creates an iterator for the given collection of {@code Principal}s. |
| * |
| * @param collection collection of {@link Principal} objects. |
| */ |
| public PrincipalIteratorAdapter(Collection<? extends Principal> collection) { |
| super(new RangeIteratorAdapter(collection)); |
| } |
| |
| //----------------------------------------< AccessControlPolicyIterator >--- |
| /** |
| * Returns the next policy. |
| * |
| * @return next policy. |
| */ |
| @Override |
| public Principal nextPrincipal() { |
| return (Principal) next(); |
| } |
| } |