org.apache.jackrabbit.oak.segment.memory

Class MemoryStore

java.lang.Object

org.apache.jackrabbit.oak.segment.memory.MemoryStore

All Implemented Interfaces:

SegmentStore

public class MemoryStore
extends Object
implements SegmentStore

A store used for in-memory operations.

Constructor Summary

Constructors

Constructor and Description
MemoryStore()

Method Summary

Modifier and Type	Method and Description
boolean	containsSegment(SegmentId id) Checks whether the identified segment exists in this store.
void	gc()
org.apache.jackrabbit.oak.spi.blob.BlobStore	getBlobStore()
SegmentReader	getReader()
Revisions	getRevisions()
SegmentTracker	getTracker()
SegmentWriter	getWriter()
SegmentId	newBulkSegmentId() Create a new SegmentId for a segment of type "bulk".
SegmentId	newDataSegmentId() Create a new SegmentId for a segment of type "data".
SegmentId	newSegmentId(long msb, long lsb) Create a SegmentId represented by the given MSB/LSB pair.
Segment	readSegment(SegmentId id) Reads the identified segment from this store.
void	writeSegment(SegmentId id, byte[] data, int offset, int length) Writes the given segment to the segment store.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

MemoryStore

public MemoryStore()
            throws IOException

Throws:

IOException

Method Detail

getTracker

@Nonnull
public SegmentTracker getTracker()

getWriter

@Nonnull
public SegmentWriter getWriter()

getReader

@Nonnull
public SegmentReader getReader()

getRevisions

@Nonnull
public Revisions getRevisions()

containsSegment

public boolean containsSegment(SegmentId id)

Description copied from interface: SegmentStore

Checks whether the identified segment exists in this store.

Specified by:

containsSegment in interface SegmentStore

Parameters:

id - segment identifier

Returns:

true if the segment exists, false otherwise

readSegment

@Nonnull
public Segment readSegment(SegmentId id)

Description copied from interface: SegmentStore

Reads the identified segment from this store.

Specified by:

readSegment in interface SegmentStore

Parameters:

id - segment identifier

Returns:

identified segment, or a SegmentNotFoundException thrown if not found

newSegmentId

@Nonnull
public SegmentId newSegmentId(long msb,
                                       long lsb)

Description copied from interface: SegmentStore

Create a SegmentId represented by the given MSB/LSB pair.

Specified by:

newSegmentId in interface SegmentStore

Parameters:

msb - The most significant bits of the SegmentId.

lsb - The least significant bits of the SegmentId.

Returns:

A non-null instance of SegmentId.

newBulkSegmentId

@Nonnull
public SegmentId newBulkSegmentId()

Description copied from interface: SegmentStore

Create a new SegmentId for a segment of type "bulk".

Specified by:

newBulkSegmentId in interface SegmentStore

Returns:

A non-null instance of SegmentId.

newDataSegmentId

@Nonnull
public SegmentId newDataSegmentId()

Description copied from interface: SegmentStore

Create a new SegmentId for a segment of type "data".

Specified by:

newDataSegmentId in interface SegmentStore

Returns:

A non-null instance of SegmentId.

writeSegment

public void writeSegment(SegmentId id,
                         byte[] data,
                         int offset,
                         int length)
                  throws IOException

Description copied from interface: SegmentStore

Writes the given segment to the segment store.

Specified by:

writeSegment in interface SegmentStore

Parameters:

id - segment identifier

data - byte buffer that contains the raw contents of the segment

offset - start offset within the byte buffer

length - length of the segment

Throws:

IOException

getBlobStore

@CheckForNull
public org.apache.jackrabbit.oak.spi.blob.BlobStore getBlobStore()

Returns:

null

gc

public void gc()