package org.jboss.seam.solder.resourceLoader.servlet;
import static java.util.Collections.emptySet;
import static java.util.Collections.singleton;
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.seam.solder.resourceLoader.ResourceLoader;
/**
* 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() + "]";
}
}