// return the resource as a stream
private InputStream mapResource(String publicId) {
if (publicId == null || id2resource == null) return null;
String resourceName = (String) id2resource.get(publicId);
ClassLoader loader = null;
if (resourceName == null) return null;
if (id2loader != null) loader = (ClassLoader) id2loader.get(publicId);
if (loader == null) return ClassLoader.getSystemResourceAsStream(resourceName);
return loader.getResourceAsStream(resourceName);
}
// This method is called whenever an external entity is accessed
// for the first time.
public InputSource resolveEntity(String publicId, String systemId) {
// Map the external entity to a local file
if (URL_PROPERTY_LIST.equals(systemId)) {
return new InputSource(ClassLoader.getSystemResourceAsStream(FILENAME_PROPERTY_LIST));
}
// Returning null causes the caller to try accessing the systemid
return null;
}