AbstractBufferClusteringPrefix (apache-cassandra API)

java.lang.Object
- org.apache.cassandra.db.AbstractOnHeapClusteringPrefix<java.nio.ByteBuffer>
- - org.apache.cassandra.db.AbstractBufferClusteringPrefix

All Implemented Interfaces:

IMeasurableMemory, Clusterable<java.nio.ByteBuffer>, ClusteringPrefix<java.nio.ByteBuffer>

Direct Known Subclasses:

BufferClustering, BufferClusteringBoundOrBoundary
```
public abstract class AbstractBufferClusteringPrefix
extends AbstractOnHeapClusteringPrefix<java.nio.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 java.nio.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, java.nio.ByteBuffer[] values)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`ValueAccessor<java.nio.ByteBuffer>`	`accessor()`
`java.nio.ByteBuffer[]`	`getBufferArray()`
`ClusteringPrefix<java.nio.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 Detail
  - EMPTY_VALUES_ARRAY
```
public static final java.nio.ByteBuffer[] EMPTY_VALUES_ARRAY
```
- Constructor Detail
  - AbstractBufferClusteringPrefix
```
protected AbstractBufferClusteringPrefix(ClusteringPrefix.Kind kind,
                                         java.nio.ByteBuffer[] values)
```
- Method Detail
  - accessor
```
public ValueAccessor<java.nio.ByteBuffer> accessor()
```
  - getBufferArray
```
public java.nio.ByteBuffer[] getBufferArray()
```
  - retainable
```
public ClusteringPrefix<java.nio.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.