Package com.bigdata.rawstore

A set of interfaces and some simple implementations for a read-write store without atomic commit or transactions.

See: Description

Interface Summary

Interface	Description
IAddressManager	An interface that encapsulates operations on opaque identifiers used to locate data within an IRawStore.
IAllocationContext	An IAllocationContext defines a shadow environment which may be associated with allocations made during a transaction.
IAllocationManagerStore	Adds capability to write and delete allocations within an IAllocationContext.
IBlock	An object that may be used to read or write a block from a store.
IMRMW	A marker interface for an IRawStore that declares support for Multiple Readers and Multiple Writers (full read-write concurrency).
IMROW	A marker interface for an IRawStore that declares support for Multiple Readers and One Writer (full read concurrency, but single-threaded writer).
IRawStore	A low-level interface for reading and writing data.
IRW	A marker interface for a store that supports Read-Write operations.
IStoreObjectInputStream	Interface exposes the IRawStore during de-serialization.
IStoreObjectOutputStream	Interface exposes the IRawStore during serialization.
IStreamStore	Interface for reading and writing streams on a persistence store.
IWORM	A marker interface for a store that supports Write Once Read Many (eg, an append only store vs a store where storage may be reused as records are logically deleted).

Class Summary

Class	Description
AbstractRawStore	Abstract base class for IRawStore implementations.
AbstractRawStoreTestCase	Base class for writing tests of the IRawStore interface.
AbstractRawWormStore	An abstract base class for IRawStore implementations that use an append only (Write Once, Read Many) strategy.
IPSOutputStream	This class provides a stream-based allocation mechanism.
RawStoreDelegate	Simple delegation pattern.
SimpleFileRawStore	A simple persistent unbuffered implementation backed by a file.
SimpleMemoryRawStore	A purely transient append-only implementation useful when data need to be buffered in memory.
TestAll	Runs all tests for all journal implementations.
TestSimpleFileRawStore	Test suite for SimpleFileRawStore.
TestSimpleMemoryRawStore	Test suite for SimpleMemoryRawStore.
TestWormAddressManager	Test suite for WormAddressManager.
TransientResourceMetadata	Static class since must be Serializable.
WormAddressManager	Encapsulates logic for operations on an opaque long integer comprising an byte offset and a byte count suitable for use in a WORM (Write Once, Read Many) IRawStore.

Package com.bigdata.rawstore Description

A set of interfaces and some simple implementations for a read-write store without atomic commit or transactions. The Journal provides an implementation of this IRawStore interface that supports atomic commit and is restart-safe.

There are some trivial implementations in the test suite that are used for bootstrapping classes with a dependency on IRawStore, such as the com.bigdata.objndx.BTree, without introducing a dependency on the Journal.