/*
* 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;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.util.Collection;
import java.util.Enumeration;
import java.util.HashSet;
import java.util.Set;
import org.jboss.solder.logging.Logger;
import org.jboss.solder.resourceLoader.ResourceLoader;
class ClasspathResourceLoader implements ResourceLoader {
private static final Logger log = Logger.getLogger("org.jboss.solder.resources");
ClasspathResourceLoader() {
}
public InputStream getResourceAsStream(String name) {
// Always use the strippedName, classloader always assumes no starting /
String strippedName = getStrippedName(name);
// Try to load from the TCCL
if (Thread.currentThread().getContextClassLoader() != null) {
InputStream stream = Thread.currentThread().getContextClassLoader().getResourceAsStream(strippedName);
if (stream != null) {
log.trace("Loaded resource from context classloader: " + strippedName);
return stream;
}
}
// Try to load from the extension's classloader
else {
InputStream stream = ResourceProducer.class.getResourceAsStream(strippedName);
if (stream != null) {
log.trace("Loaded resource from Solder classloader: " + strippedName);
return stream;
}
}
return null;
}
public URL getResource(String name) {
// Always use the strippedName, classloader always assumes no starting /
String strippedName = getStrippedName(name);
// Try to load from the TCCL
if (Thread.currentThread().getContextClassLoader() != null) {
URL url = Thread.currentThread().getContextClassLoader().getResource(strippedName);
if (url != null) {
log.trace("Loaded resource from context classloader: " + strippedName);
return url;
}
}
// Try to load from the extension's classloader
else {
URL url = ResourceProducer.class.getResource(strippedName);
if (url != null) {
log.trace("Loaded resource from Solder classloader: " + strippedName);
return url;
}
}
return null;
}
public Set<URL> getResources(String name) {
Set<URL> urls = new HashSet<URL>();
// Always use the strippedName, classloader always assumes no starting /
String strippedName = getStrippedName(name);
// Try to load from the TCCL
if (Thread.currentThread().getContextClassLoader() != null) {
try {
Enumeration<URL> urlEnum = Thread.currentThread().getContextClassLoader().getResources(strippedName);
while (urlEnum.hasMoreElements()) {
urls.add(urlEnum.nextElement());
}
} catch (IOException e) {
// we are probably not going to recover from an IOException
throw new RuntimeException(e);
}
}
// Try to load from the extension's classloader
else {
try {
Enumeration<URL> urlEnum = ResourceProducer.class.getClassLoader().getResources(strippedName);
while (urlEnum.hasMoreElements()) {
urls.add(urlEnum.nextElement());
}
} catch (IOException e) {
throw new RuntimeException(e);
}
}
return urls;
}
public Collection<InputStream> getResourcesAsStream(String name) {
Set<InputStream> resources = new HashSet<InputStream>();
// Always use the strippedName, classloader always assumes no starting /
String strippedName = getStrippedName(name);
// Try to load from the TCCL
if (Thread.currentThread().getContextClassLoader() != null) {
try {
Enumeration<URL> urlEnum = Thread.currentThread().getContextClassLoader().getResources(strippedName);
while (urlEnum.hasMoreElements()) {
resources.add(urlEnum.nextElement().openStream());
}
} catch (IOException e) {
// we are probably not going to recover from an IOException
throw new RuntimeException(e);
}
}
// Try to load from the extension's classloader
else {
try {
Enumeration<URL> urlEnum = ResourceProducer.class.getClassLoader().getResources(strippedName);
while (urlEnum.hasMoreElements()) {
resources.add(urlEnum.nextElement().openStream());
}
} catch (IOException e) {
throw new RuntimeException(e);
}
}
return resources;
}
public int getPrecedence() {
return 10;
}
private static String getStrippedName(String name) {
return name.startsWith("/") ? name.substring(1) : name;
}
}