/*
* JBoss, Home of Professional Open Source
* Copyright 2011, Red Hat, Inc. and/or its affiliates, and individual
* contributors by the @authors tag. See the copyright.txt in the
* distribution for a full listing of individual contributors.
*
* Licensed 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.jboss.solder.resourceLoader.servlet;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.Collection;
import java.util.Set;
import javax.servlet.ServletContext;
import org.jboss.solder.resourceLoader.ResourceLoader;
import static java.util.Collections.emptySet;
import static java.util.Collections.singleton;
/**
* Implementation of ResourceLoader that can load from the servlet context. It
* is not used directly but is called by DelegatingResourceLoader
*
* @author stuart
*/
class ServletContextLoader implements ResourceLoader {
private final ServletContext context;
ServletContextLoader(ServletContext context) {
this.context = context;
}
public URL getResource(String resource) {
if (!resource.startsWith("/")) {
resource = "/" + resource;
}
try {
return context.getResource(resource);
} catch (MalformedURLException e) {
throw new RuntimeException(e);
}
}
public InputStream getResourceAsStream(String resource) {
if (!resource.startsWith("/")) {
resource = "/" + resource;
}
return context.getResourceAsStream(resource);
}
public Set<URL> getResources(String name) {
URL resource = getResource(name);
if (resource != null) {
return singleton(resource);
}
return emptySet();
}
public Collection<InputStream> getResourcesAsStream(String name) {
InputStream resource = getResourceAsStream(name);
if (resource != null) {
return singleton(resource);
} else {
return emptySet();
}
}
/**
* <p>
* This loader has precedence 5, and so is searched after the classpath.
* </p>
*
* @return a precedence of 5
*/
// NB This is currently not used due to the interference of DelegatingResourceLoader
public int getPrecedence() {
return 5;
}
@Override
public String toString() {
return getClass().getName() + " [" + context.getContextPath() + "]";
}
}