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diff --git a/TODO.txt b/TODO.txt deleted file mode 100644 index 972f8e4..0000000 --- a/TODO.txt +++ /dev/null @@ -1,94 +0,0 @@ -Carbonado TODO - -== Bugs == - -* Support LOBs in replicated repository. -* Merge sort crashes if it needs to write Storables which contain - LOBs. Solution is to support serialization by the Storable itself - somehow. This is also required for the RemoteRepository. - - -== Query Enhancements == - -* Support 'like' operator. For example: "name like ?%". Also define "!like" operator. -* Define basic aggregation functions, Query.min, Query.max, and - Query.distinct (returns a Cursor<Object>). Optimizations exist at the index layer. -* Define Query.fetch(int skip, int limit), fetch(int, int, int prefetch) - methods. Should these be separate methods, to better support query - optimization? Query.skip(500).limit(100).prefetch(50).fetch(); prefetch? - buffer? chunk? accumulate? collect? cache? Should this be a parameter to - fetch, or does it look like a limit? -* Support outer join in query filter, perhaps using (.) instead of regular dot. - Might be confusing: "address(.)city = ?". This might make more sense: - "(address).city = ?". It says "address" is optional. Join property must be - defined as Nullable to support outer join query. -* Support query by example: Query<S> Storable.query() -* Support basic sub-queries: - Query<Foo> fooQuery = fooStorage.query("name in ?.name").with(barStorage.query(...)); - Can also use "!in" operator. When placeholder is of the form "?.<name>", - parameter may be a Query, Cursor, Iterator, Collection or array. When just - "?", parameter cannot be a Query. Correlated sub-queries cannot be supported - with this syntax, but then correlated sub-queries generally perform poorly. -* Support simple views. The Query object has a "view" method, which returns - another Query. The implementation effectively locks down the Filter such that - it is always "and"ed with the Filter from the source Query. The view method - throws an IllegalStateException if any blank parameters. - - -== Performance == - -* Support partial lookup: - // For partial lookup, identify which properties you want. - // Selections are overridden when calling reject. - Query<S> select(String...); - - // For partial lookup, identify which properties you don't want. - // Rejections are overridden when calling select. - Query<S> reject(String...); - -* With support for partial lookup, optimize query by index. If index contains - all desired master properties, then don't load master. -* For JDBC repo, perform eager load of joined properties which participate in - the query filter. Don't do this if properties rejected. -* JDBC repository should have a mechanism to determine (with some reasonable - reliability) if a trigger exists in the database which will perform the - action that the carbonado trigger will, and disable the carbonado trigger if - so, and (the payoff) allow bulk operations to function in bulk mode rather - than one-by-one (specifically, deletes). - - -== Utilities == - -* Unclosed resource detection and warning mechanisms -* Enhanced logging for Replicated and Writethrough repositories. -* Repository importer/exporter - - -== Misc Features == - -* Allow property annotation to be specified on either accessor or - mutator. Still only one type allowed, however. -* Support sysdate() by adding method on Repository. -* Add @Auto annotation. Property not needed for insert, and if on primary key, - assumes it is an identity property. @Auto is only for repositories that have - hidden triggers and identity columns. Its pretty much a JDBC-only - feature. Sadly, there's no real way to verify if an @Auto property was - actually set to a value or not. BDB repository can support @Auto for primary - key by mapping to sequence whose name is the Storable class name. -* Add @Default annotation. -* Support non-transactional truncate operation, on the Storage object. If in a txn, - throw IllegalStateException. If any Lobs, call normal deleteAll instead to ensure - referenced Lobs get deleted. -* Support foreign key definition on @Join, which automatically installs check - triggers. Also support cascade delete option. - - -== Long Term Ideas == - -* RemoteRepository -* PartitionedRepository -* In-memory repository, which will likely use ConcurrentSkipListMap from jdk1.6. -* More work in replicated repository to decide if throwing repair exception is justified. -* Data model versioning (when do we remove indexes?) - - |