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.

Field Summary

Fields inherited from interface org.apache.jackrabbit.oak.segment.SegmentStore

EMPTY_STORE

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()
@Nullable BlobStore	getBlobStore()
@NotNull SegmentReader	getReader()
Set<SegmentId>	getReferencedSegmentIds()
@NotNull Revisions	getRevisions()
@NotNull SegmentIdProvider	getSegmentIdProvider()
@NotNull SegmentWriter	getWriter()
@NotNull 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

getWriter

@NotNull
public @NotNull SegmentWriter getWriter()

getReader

@NotNull
public @NotNull SegmentReader getReader()

getSegmentIdProvider

@NotNull
public @NotNull SegmentIdProvider getSegmentIdProvider()

getRevisions

@NotNull
public @NotNull 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

@NotNull
public @NotNull 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

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

@Nullable
public @Nullable BlobStore getBlobStore()

Returns:

null

gc

public void gc()

getReferencedSegmentIds

public Set<SegmentId> getReferencedSegmentIds()