public virtual Resource put(System.Object key, Resource value_Renamed) {
Object o = cache[key];
cache[key] = value_Renamed;
return (Resource) o;
}
public Resource put(Object key, Resource value)
{
Object o = cache[key];
cache[key] = value;
return (Resource) o;
}
/// <summary> Takes an existing resource, and 'refreshes' it. This
/// generally means that the source of the resource is checked
/// for changes according to some cache/check algorithm
/// and if the resource changed, then the resource data is
/// reloaded and re-parsed.
/// *
/// </summary>
/// <param name="resource">resource to refresh
/// *
/// @throws ResourceNotFoundException if template not found
/// from current source for this Resource
/// @throws ParseErrorException if template cannot be parsed due
/// to syntax (or other) error.
/// @throws Exception if a problem in parse
///
/// </param>
protected internal virtual void refreshResource(Resource resource, System.String encoding) {
/*
* The resource knows whether it needs to be checked
* or not, and the resource's loader can check to
* see if the source has been modified. If both
* these conditions are true then we must reload
* the input stream and parse it to make a new
* AST for the resource.
*/
if (resource.RequiresChecking()) {
/*
* touch() the resource to reset the counters
*/
resource.Touch();
if (resource.IsSourceModified()) {
/*
* now check encoding info. It's possible that the newly declared
* encoding is different than the encoding already in the resource
* this strikes me as bad...
*/
if (!resource.Encoding.Equals(encoding)) {
rsvc.error("Declared encoding for template '" + resource.Name + "' is different on reload. Old = '" + resource.Encoding + "' New = '" + encoding);
resource.Encoding = encoding;
}
/*
* read how old the resource is _before_
* processing (=>reading) it
*/
long howOldItWas = resource.ResourceLoader.getLastModified(resource);
/*
* read in the fresh stream and parse
*/
resource.Process();
/*
* now set the modification info and reset
* the modification check counters
*/
resource.LastModified = howOldItWas;
}
}
}
public override long GetLastModified(Resource resource) {
return resource.LastModified;
}
private void InitializeResource(Resource resource, string resourceName, string encoding)
{
resource.RuntimeServices = runtimeServices;
resource.Name = resourceName;
resource.Encoding = encoding;
}
public override bool IsSourceModified(Resource resource) {
return false;
}
/* (non-Javadoc)
* @see org.apache.velocity.runtime.resource.loader.ResourceLoader#getLastModified(org.apache.velocity.runtime.resource.Resource)
*/
public override long getLastModified(Resource resource)
{
return (DateTime.Now.Ticks - 621355968000000000) / 10000;
}
/// <summary>
/// Loads a resource from the current set of resource loaders
/// </summary>
/// <param name="resourceName">The name of the resource to retrieve.</param>
/// <param name="resourceType">The type of resource (<code>RESOURCE_TEMPLATE</code>,
/// <code>RESOURCE_CONTENT</code>, etc.).
/// </param>
/// <param name="encoding"> The character encoding to use.</param>
/// <returns>Resource with the template parsed and ready.
/// @throws ResourceNotFoundException if template not found
/// from any available source.
/// @throws ParseErrorException if template cannot be parsed due
/// to syntax (or other) error.
/// @throws Exception if a problem in parse
/// </returns>
protected internal virtual Resource loadResource(System.String resourceName, int resourceType, System.String encoding)
{
Resource resource = ResourceFactory.getResource(resourceName, resourceType);
resource.RuntimeServices = rsvc;
resource.Name = resourceName;
resource.Encoding = encoding;
/*
* Now we have to try to find the appropriate
* loader for this resource. We have to cycle through
* the list of available resource loaders and see
* which one gives us a stream that we can use to
* make a resource with.
*/
long howOldItWas = 0; // Initialize to avoid warnings
ResourceLoader resourceLoader = null;
for (int i = 0; i < resourceLoaders.Count; i++)
{
resourceLoader = (ResourceLoader)resourceLoaders[i];
resource.ResourceLoader = resourceLoader;
/*
* catch the ResourceNotFound exception
* as that is ok in our new multi-loader environment
*/
try {
if (resource.Process())
{
/*
* FIXME (gmj)
* moved in here - technically still
* a problem - but the resource needs to be
* processed before the loader can figure
* it out due to to the new
* multi-path support - will revisit and fix
*/
if (logWhenFound)
{
rsvc.info("ResourceManager : found " + resourceName + " with loader " + resourceLoader.ClassName);
}
howOldItWas = resourceLoader.getLastModified(resource);
break;
}
} catch (ResourceNotFoundException rnfe) {
/*
* that's ok - it's possible to fail in
* multi-loader environment
*/
}
}
/*
* Return null if we can't find a resource.
*/
if (resource.Data == null)
{
throw new ResourceNotFoundException("Unable to find resource '" + resourceName + "'");
}
/*
* some final cleanup
*/
resource.LastModified = howOldItWas;
resource.ModificationCheckInterval = resourceLoader.ModificationCheckInterval;
resource.Touch();
return(resource);
}
/// <summary> Gets the named resource. Returned class type corresponds to specified type
/// (i.e. <code>Template</code> to <code>RESOURCE_TEMPLATE</code>).
/// *
/// </summary>
/// <param name="resourceName">The name of the resource to retrieve.
/// </param>
/// <param name="resourceType">The type of resource (<code>RESOURCE_TEMPLATE</code>,
/// <code>RESOURCE_CONTENT</code>, etc.).
/// </param>
/// <param name="encoding"> The character encoding to use.
/// </param>
/// <returns>Resource with the template parsed and ready.
/// @throws ResourceNotFoundException if template not found
/// from any available source.
/// @throws ParseErrorException if template cannot be parsed due
/// to syntax (or other) error.
/// @throws Exception if a problem in parse
///
/// </returns>
public virtual Resource getResource(System.String resourceName, int resourceType, System.String encoding)
{
/*
* Check to see if the resource was placed in the cache.
* If it was placed in the cache then we will use
* the cached version of the resource. If not we
* will load it.
*/
Resource resource = globalCache.get(resourceName);
if (resource != null)
{
/*
* refresh the resource
*/
try {
refreshResource(resource, encoding);
} catch (ResourceNotFoundException rnfe) {
/*
* something exceptional happened to that resource
* this could be on purpose,
* so clear the cache and try again
*/
globalCache.remove(resourceName);
return(getResource(resourceName, resourceType, encoding));
} catch (ParseErrorException pee) {
rsvc.error("ResourceManager.getResource() exception: " + pee);
throw pee;
} catch (System.Exception eee) {
rsvc.error("ResourceManager.getResource() exception: " + eee);
throw eee;
}
}
else
{
try {
/*
* it's not in the cache, so load it.
*/
resource = loadResource(resourceName, resourceType, encoding);
if (resource.ResourceLoader.isCachingOn())
{
globalCache.put(resourceName, resource);
}
} catch (ResourceNotFoundException rnfe2) {
rsvc.error("ResourceManager : unable to find resource '" + resourceName + "' in any resource loader.");
throw rnfe2;
} catch (ParseErrorException pee) {
rsvc.error("ResourceManager.getResource() parse exception: " + pee);
throw pee;
} catch (System.Exception ee) {
rsvc.error("ResourceManager.getResource() exception new: " + ee);
throw ee;
}
}
return(resource);
}
private void ProcessResourceWithSensibleExceptionWrapping(string resourceName,
Resource resource)
{
try
{
resource.Process();
}
catch(Exception e)
{
throw new ResourceProcessingException(resourceName, e);
}
}
