1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one or more 3 * contributor license agreements. See the NOTICE file distributed with 4 * this work for additional information regarding copyright ownership. 5 * The ASF licenses this file to You under the Apache License, Version 2.0 6 * (the "License"); you may not use this file except in compliance with 7 * the License. You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 package org.apache.commons.discovery; 18 19 20 /*** 21 * Iterate over resource names. 22 * The semantics are somewhat unusual, for better or worse. 23 * hasNext is presumed to be destructive to the current state, 24 * each call will 'move' the cursor. 25 * nextResourceName() MUST BE non-destructive, 26 * it does not change the state. 27 * 28 * TODO: FIX iterator logic/semantics, possibly add 'currentResourceName()'. 29 * 30 * @author Richard A. Sitze 31 */ 32 public interface ResourceNameIterator 33 { 34 /*** 35 * hasNext() 36 */ 37 public boolean hasNext(); 38 39 /*** 40 * nextResourceName() returns the name of the next resource, 41 * and MUST be non-destructive. Repeated calls 42 */ 43 public String nextResourceName(); 44 }