Evaluation stacks have a type defined as a name:
const char *
Stacks are made of filters. Here we define an interface that is common to all filter types:
Type Returns the filter type. This is a string that identifies the type of the filter, and will be used to determine if two filter objects can be compared. If you don’t want your Compare() method called with all kinds of other filters you should make sure this string is unique.
Compare Compares to another filter and returns LXiSTACK_IDENTICAL if the results of these filters would be the same, LXiSTACK_COMPATIBLE if the output of the other filter can be converted to this one’s, or LXiSTACK_DIFFERENT if they are irreconcilable.
Convert If this filter is unused but found to be compatible with another of the same type, the Convert() method will be called to convert this one to match the new desired form. The filter should remember the jist of the differences and update destination object when applied.
Identifier This is expected to return an identifier that identifies this filter in an evaluation stack.
- const char *
Items stored in the cache are simple COM objects with a single method - the Size method. Size is provided by the client so that the cache system may effectively manage memory since it has no knowledge of the data itself.
Size The Size method is used to allow the cache system to query the CacheData object to determine its size for memory managemnt purposes and only memory management purposes. Calling this function does no allocation or anything other than reporting how much memory this object uses.
- unsigned int
ScriptQuery(LXtObjectID self, void **ppvObj)¶
The Cache Service provides methods for modifying and accessing named caches.
Register Clients are added to the cache by simply registering their name. Success means the new cache has been created and initialized. Failure means the named cache already exists.
Release Releases all of the data objects stored in the named cache, and deletes the named cache.
GetData Returns a COM object for the data stored in the named cache, for the provided key.
SetData Sets the COM object stored in a named cache for a specific key.
PurgeData Releases all of the data in the named cache.