| /* |
| * 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.catalina.webresources; |
| |
| import java.io.InputStream; |
| import java.net.URL; |
| import java.util.Collections; |
| import java.util.Set; |
| |
| import org.apache.catalina.LifecycleException; |
| import org.apache.catalina.LifecycleState; |
| import org.apache.catalina.WebResource; |
| import org.apache.catalina.WebResourceRoot; |
| import org.apache.catalina.WebResourceSet; |
| import org.apache.catalina.util.LifecycleBase; |
| |
| /** |
| * A {@link WebResourceSet} implementation that is not backed by a file system |
| * and behaves as if it has no resources available. This is primarily used in |
| * embedded mode when the web application is configured entirely |
| * programmatically and does not use any static resources from the file system. |
| */ |
| public class EmptyResourceSet extends LifecycleBase implements WebResourceSet { |
| |
| private static final String[] EMPTY_STRING_ARRAY = new String[0]; |
| |
| private WebResourceRoot root; |
| private boolean classLoaderOnly; |
| private boolean staticOnly; |
| |
| public EmptyResourceSet(WebResourceRoot root) { |
| this.root = root; |
| } |
| |
| /** |
| * {@inheritDoc} |
| * <p> |
| * This implementation always returns an {@link EmptyResource}. |
| */ |
| @Override |
| public WebResource getResource(String path) { |
| return new EmptyResource(root, path); |
| } |
| |
| /** |
| * {@inheritDoc} |
| * <p> |
| * This implementation always returns an empty array. |
| */ |
| @Override |
| public String[] list(String path) { |
| return EMPTY_STRING_ARRAY; |
| } |
| |
| /** |
| * {@inheritDoc} |
| * <p> |
| * This implementation always returns an empty set. |
| */ |
| @Override |
| public Set<String> listWebAppPaths(String path) { |
| return Collections.emptySet(); |
| } |
| |
| /** |
| * {@inheritDoc} |
| * <p> |
| * This implementation always returns false. |
| */ |
| @Override |
| public boolean mkdir(String path) { |
| return false; |
| } |
| |
| /** |
| * {@inheritDoc} |
| * <p> |
| * This implementation always returns false. |
| */ |
| @Override |
| public boolean write(String path, InputStream is, boolean overwrite) { |
| return false; |
| } |
| |
| @Override |
| public void setRoot(WebResourceRoot root) { |
| this.root = root; |
| } |
| |
| @Override |
| public boolean getClassLoaderOnly() { |
| return classLoaderOnly; |
| } |
| |
| @Override |
| public void setClassLoaderOnly(boolean classLoaderOnly) { |
| this.classLoaderOnly = classLoaderOnly; |
| } |
| |
| @Override |
| public boolean getStaticOnly() { |
| return staticOnly; |
| } |
| |
| @Override |
| public void setStaticOnly(boolean staticOnly) { |
| this.staticOnly = staticOnly; |
| } |
| |
| /** |
| * {@inheritDoc} |
| * <p> |
| * This implementation always returns null. |
| */ |
| @Override |
| public URL getBaseUrl() { |
| return null; |
| } |
| |
| /** |
| * {@inheritDoc} |
| * <p> |
| * Calls to this method will be ignored as this implementation always read |
| * only. |
| */ |
| @Override |
| public void setReadOnly(boolean readOnly) { |
| |
| } |
| |
| /** |
| * {@inheritDoc} |
| * <p> |
| * This implementation always returns true. |
| */ |
| @Override |
| public boolean isReadOnly() { |
| return true; |
| } |
| |
| @Override |
| public void gc() { |
| // NO-OP |
| } |
| |
| @Override |
| protected void initInternal() throws LifecycleException { |
| // NO-OP |
| } |
| |
| @Override |
| protected void startInternal() throws LifecycleException { |
| setState(LifecycleState.STARTING); |
| } |
| |
| @Override |
| protected void stopInternal() throws LifecycleException { |
| setState(LifecycleState.STOPPING); |
| } |
| |
| @Override |
| protected void destroyInternal() throws LifecycleException { |
| // NO-OP |
| } |
| } |