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jsteemann
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101
LES-TODOS
101
LES-TODOS
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done
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----
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- create new branch
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- factor out transactions from LogfileManager
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- concept "collection locks"
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- 3 states: READ / WRITE / EXCLUSIVE for locks
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- index implementations => moved & renamed to StorageEngine
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- move engine files into MMFiles directory
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- split IndexElement
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- rename *IndexElement to MMFiles*
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- move fulltext & geoindex & skiplist helper code into MMFiles
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- rename "RocksDBIndex" to "PersistentIndex"
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- Delete OperationCursor->getMore. Replace by getMoreTokens
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- remove ReadCache
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- Index API
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- Indexes always return std::vector<TOKEN>
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- Rename OperationCursor->getMoreMptr => getMoreTokens, "returns" std::vector<TOKEN>&
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- GeoIndex hands out TRI_revision instead of Tokens
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- FulltextIndex hands out TRI_revision instead of Tokens
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- trx::InvokeOnAllElements : uses SimpleIndexLookupElements => Has to use Tokens instead?
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- remove TransactionState include from Transaction.h
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MMFiles reference removals from files:
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* arangod/V8Server/v8-query.cpp
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- StorageEngine specific IndexFactory:
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- create indexes from VPack
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- enhance/validate given VPack index definitions (set default values, reject illegal ones)
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- Implement new IndexIterator API next(callback, limit)
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- Primary
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- Hash
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- Skiplist
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- Persistent
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- Geo
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- Fulltext
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- index API
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- StorageEngine specific AQL functions
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- Register for specific function names => branches to StorageEngine impl
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- Storage Engine can implement these functions with specific code and interna
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- e.g.: Geo, Fulltext
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- Replace Usage of new callback-based IndexIterator
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- move engine-specific parts of transaction.cpp into engine
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- Logical => Physical
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- keyGenerator
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- dropIndex(p) => phys->dropIndex(p, true)
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- DML API
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- DDL API
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- StorageEngineAPI readDocument requires 2 functions:
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- void readDocument(TOKEN id, VPackBuilder& result) => Collects the document and inserts it asis into result. Does NOT clear result.
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- void readDocument(TOKEN id, std::vector<std::string> const& attributePath, VPackBuilder& result) => Collects the document and writes only the value at the given attributePath (e.g. `a.b.c`) into result. Does NOT clear result.
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in progress
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-----------
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- check for illegal includes
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- fix includes during API conversion
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to do
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-----
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- rename TRI_df_marker_* to something storage-engine specific
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- applyForTickRange has to be moved to MMFilesCollection (used in replication-dump)
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- add new serialization RW lock to LogicalCollection. all DML ops must acquire it in read mode, the explicit lock command must acquire it in write mode.
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- AqlValue needs a (lazy evaluated) type TOKEN that handles collection ID and TOKEN inplace.
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- slice() => looksup the value in the Database
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- We need to keep in mind the cluster. If a DBServer creates this token-type it has to be translated BEFORE the register is teleported to coordinator
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- Remove temporary wrapper LogCol::readDocument()
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- InitialySyncer.cpp knows details of StorageEngine MMFiles
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MMFiles are known to the following files:
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* arangod/Replication/InitialSyncer.cpp
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* arangod/RestHandler/RestExportHandler.cpp
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* arangod/RestHandler/RestWalHandler.cpp
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* arangod/RestHandler/RestReplicationHandler.cpp
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* arangod/RestServer/arangod.cpp
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* arangod/StorageEngine/EngineSelectorFeature.cpp
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* arangod/Utils/CollectionExport.cpp
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* arangod/Utils/CollectionKeys.cpp
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* arangod/V8Server/v8-replication.cpp
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* arangod/V8Server/v8-collection.cpp
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* arangod/V8Server/v8-vocbase.cpp
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* arangod/VocBase/replication-dump.cpp
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* arangod/VocBase/vocbase.cpp
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- IndexFactory needs a function to stringifyIndexes and rename idxFoo => IdxZirkusBar
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- Implement new IndexIterator API nextExtra(callback, limit)
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- Geo
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- OperationOptions
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- recovoryMarker
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- re-enable RocksDB storage engine (e.g arangod.cpp)
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- implement RocksDB storage engine
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Questions
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---------
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* For GeoIndex `ignoreNull: true` and `constraint: false` are only set in Cluster mode. Is that art or can it go away?
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OpenIssues Hacki
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----------------
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* HashIndex Lookup into a still local buffer, could be replaced by callback as well.
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* SingleServerTraverser API does NOT takeover responsibility for slice data. getMore() hopes slices to not go away
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* This API can be improved if we make better use of those callbacks.
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* ShortestPathBlock does assume that slices do not walk away.
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* EdgeCollectionInfos in ShortestPath could share one conditionBuilder.
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