| /* |
| * 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 |
| * |
| * https://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.ivy.plugins.repository; |
| |
| public abstract class LazyResource implements Resource { |
| private boolean init = false; |
| |
| private boolean local; |
| |
| private String name; |
| |
| private long lastModified; |
| |
| private long contentLength; |
| |
| private boolean exists; |
| |
| public LazyResource(String name) { |
| this.name = name; |
| } |
| |
| protected abstract void init(); |
| |
| private void checkInit() { |
| if (!init) { |
| init(); |
| init = true; |
| } |
| } |
| |
| public boolean exists() { |
| checkInit(); |
| return exists; |
| } |
| |
| public long getContentLength() { |
| checkInit(); |
| return contentLength; |
| } |
| |
| public long getLastModified() { |
| checkInit(); |
| return lastModified; |
| } |
| |
| public String getName() { |
| return name; |
| } |
| |
| public boolean isLocal() { |
| checkInit(); |
| return local; |
| } |
| |
| public String toString() { |
| return getName(); |
| } |
| |
| protected void setContentLength(long contentLength) { |
| this.contentLength = contentLength; |
| } |
| |
| protected void setExists(boolean exists) { |
| this.exists = exists; |
| } |
| |
| protected void setLastModified(long lastModified) { |
| this.lastModified = lastModified; |
| } |
| |
| protected void setLocal(boolean local) { |
| this.local = local; |
| } |
| |
| protected void init(Resource r) { |
| setContentLength(r.getContentLength()); |
| setLocal(r.isLocal()); |
| setLastModified(r.getLastModified()); |
| setExists(r.exists()); |
| } |
| |
| } |