Package org.apache.cassandra.db

Class AbstractBufferClusteringPrefix

java.lang.Object

org.apache.cassandra.db.AbstractOnHeapClusteringPrefix<ByteBuffer>

org.apache.cassandra.db.AbstractBufferClusteringPrefix

All Implemented Interfaces:

IMeasurableMemory, Clusterable<ByteBuffer>, ClusteringPrefix<ByteBuffer>

Direct Known Subclasses:

BufferClustering, BufferClusteringBoundOrBoundary

public abstract class AbstractBufferClusteringPrefix
extends AbstractOnHeapClusteringPrefix<ByteBuffer>

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.cassandra.db.ClusteringPrefix

ClusteringPrefix.Deserializer, ClusteringPrefix.Kind, ClusteringPrefix.Serializer

Field Summary

Fields

Modifier and Type	Field	Description
static final ByteBuffer[]	EMPTY_VALUES_ARRAY

Fields inherited from class org.apache.cassandra.db.AbstractOnHeapClusteringPrefix

kind, values

Fields inherited from interface org.apache.cassandra.db.ClusteringPrefix

serializer

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	AbstractBufferClusteringPrefix(ClusteringPrefix.Kind kind, ByteBuffer[] values)

Method Summary

Modifier and Type	Method	Description
ValueAccessor<ByteBuffer>	accessor()
ByteBuffer[]	getBufferArray()
ClusteringPrefix<ByteBuffer>	retainable()	Return the key in a form that can be retained for longer-term use.

Methods inherited from class org.apache.cassandra.db.AbstractOnHeapClusteringPrefix

clustering, equals, get, getRawValues, hashCode, kind, size

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.cassandra.db.ClusteringPrefix

asEndBound, asStartBound, bufferAt, clusteringString, dataSize, digest, isBottom, isEmpty, isTop, serializeAsPartitionKey, stringAt, toString, validate, validate

Methods inherited from interface org.apache.cassandra.cache.IMeasurableMemory

unsharedHeapSize

Field Details

EMPTY_VALUES_ARRAY

public static final ByteBuffer[] EMPTY_VALUES_ARRAY

Constructor Details

AbstractBufferClusteringPrefix

protected AbstractBufferClusteringPrefix(ClusteringPrefix.Kind kind,
 ByteBuffer[] values)

Method Details

accessor

public ValueAccessor<ByteBuffer> accessor()

getBufferArray

public ByteBuffer[] getBufferArray()

retainable

public ClusteringPrefix<ByteBuffer> retainable()

Description copied from interface: ClusteringPrefix

Return the key in a form that can be retained for longer-term use. This means extracting keys stored in shared memory (i.e. in memtables) to minimized on-heap versions. If the object is already in minimal form, no action will be taken.