private Asset createAssetFromResource(Resource resource) {
// The class of the resource is derived from the class of the base resource.
// So we can then use the class of the resource as a key to locate the correct asset
// factory.
try {
upgradeReadLockToWriteLock();
// Check for competing thread beat us to it (not very likely!):
Asset result = TapestryInternalUtils.getAndDeref(cache, resource);
if (result != null) {
return result;
}
Class resourceClass = resource.getClass();
AssetFactory factory = registry.get(resourceClass);
return factory.createAsset(resource);
} finally {
downgradeWriteLockToReadLock();
}
}
private Asset getAssetForResource(Resource resource) {
try {
acquireReadLock();
Asset result = TapestryInternalUtils.getAndDeref(cache, resource);
if (result == null) {
result = createAssetFromResource(resource);
cache.put(resource, new SoftReference(result));
}
return result;
} finally {
releaseReadLock();
}
}