ColumnDelta

Encapsulates a delta for update to be applied to column table and also is stored in the region. The key for a delta is a negative columnIndex evaluated as (ColumnFormatEntry.DELTA_STATROW_COL_INDEX - 1 + MAX_DEPTH * -columnIndex) where columnIndex is the 0-based index of the underlying table column.

Note that this delta is for carrying the delta update and applying on existing delta, if any, while the actual value that is stored in the region is a ColumnFormatValue. This is to ensure clean working of the delta mechanism where store-layer code checks the type of object for Delta and makes assumptions about it (like it being a temporary value that should not go into region etc).

For a description of column delta format see the class comments in org.apache.spark.sql.execution.columnar.encoding.ColumnDeltaEncoder.

Linear Supertypes

Delta, ColumnFormatValue, Sizeable, GfxdSerializable, GfxdDSFID, DataSerializableFixedID, SerializationVersions, SerializedDiskBuffer, ByteBufferReference, AnyRef, Any

Instance Constructors

new ColumnDelta(buffer: ByteBuffer)
new ColumnDelta()

Value Members

final def !=(arg0: Any): Boolean

Definition Classes
AnyRef → Any
final def ##(): Int

Definition Classes
AnyRef → Any
final def ==(arg0: Any): Boolean

Definition Classes
AnyRef → Any
def allowCreate(): Boolean

first delta update for a column will be put as is into the region
first delta update for a column will be put as is into the region

Definition Classes
ColumnDelta → Delta
def apply(region: Region[_, _], key: AnyRef, oldValue: AnyRef, prepareForOffHeap: Boolean): AnyRef

Definition Classes
ColumnDelta → Delta
def apply(putEvent: EntryEvent[_, _]): AnyRef

Definition Classes
ColumnDelta → Delta
final def asInstanceOf[T0]: T0

Definition Classes
Any
final def channelSize(): Int

Definition Classes
ColumnFormatValue → SerializedDiskBuffer
def clone(): AnyRef

Attributes
protected[java.lang]
Definition Classes
AnyRef
Annotations
@throws( ... )
def cloneDelta(): Delta

Definition Classes
ColumnDelta → Delta
var columnBuffer: ByteBuffer

Attributes
protected
Definition Classes
ColumnFormatValue
final def copyToHeap(owner: String): Unit

Definition Classes
ColumnFormatValue → SerializedDiskBuffer
var diskId: DiskId

Attributes
protected
Definition Classes
ColumnFormatValue
var diskRegion: DiskRegionView

Attributes
protected
Definition Classes
ColumnFormatValue
def duplicateBuffer(buffer: ByteBuffer): ByteBuffer

Attributes
protected
Definition Classes
ColumnFormatValue
Annotations
@inline()
final def eq(arg0: AnyRef): Boolean

Definition Classes
AnyRef
def equals(arg0: Any): Boolean

Definition Classes
AnyRef → Any
def finalize(): Unit

Attributes
protected[java.lang]
Definition Classes
AnyRef
Annotations
@throws( classOf[java.lang.Throwable] )
def fromData(in: DataInput): Unit

Definition Classes
ColumnFormatValue → DataSerializableFixedID
final def getBufferRetain(): ByteBuffer

Callers of this method should have a corresponding release method for eager release to work else off-heap object may keep around occupying system RAM until the next GC cycle.
Callers of this method should have a corresponding release method for eager release to work else off-heap object may keep around occupying system RAM until the next GC cycle. Callers may decide whether to keep the release method in a finally block to ensure its invocation, or do it only in normal paths because JVM reference collector will eventually clean it in any case.
Calls to this specific class are guaranteed to always return buffers which have position as zero so callers can make simplifying assumptions about the same.

Definition Classes
ColumnFormatValue → ByteBufferReference
final def getClass(): Class[_]

Definition Classes
AnyRef → Any
final def getDSFID(): Int

Definition Classes
ColumnFormatValue → DataSerializableFixedID
def getDiskBufferRetain(): SerializedDiskBuffer

Definition Classes
SerializedDiskBuffer
def getGfxdID(): Byte

Definition Classes
ColumnDelta → ColumnFormatValue → GfxdDSFID
def getOffHeapSizeInBytes(): Int

Definition Classes
ColumnFormatValue → SerializedDiskBuffer
def getSerializationVersions(): Array[Version]

Definition Classes
ColumnFormatValue → SerializationVersions
def getSizeInBytes(): Int

Definition Classes
ColumnFormatValue → Sizeable
def getVersionTag(): VersionTag[_ <: VersionSource[_]]

Definition Classes
ColumnDelta → Delta
def hashCode(): Int

Definition Classes
AnyRef → Any
final def isDirect: Boolean

Definition Classes
ColumnFormatValue
final def isInstanceOf[T0]: Boolean

Definition Classes
Any
def merge(region: Region[_, _], toMerge: Delta): Delta

Definition Classes
ColumnDelta → Delta
final def ne(arg0: AnyRef): Boolean

Definition Classes
AnyRef
final def needsRelease(): Boolean

Definition Classes
ColumnFormatValue → ByteBufferReference
final def notify(): Unit

Definition Classes
AnyRef
final def notifyAll(): Unit

Definition Classes
AnyRef
def refCount(): Int

Definition Classes
SerializedDiskBuffer → ByteBufferReference
def release(): Unit

Definition Classes
SerializedDiskBuffer → ByteBufferReference
def releaseBuffer(): Unit

Attributes
protected
Definition Classes
ColumnFormatValue → SerializedDiskBuffer
def retain(): Boolean

Definition Classes
SerializedDiskBuffer → ByteBufferReference
def setBuffer(buffer: ByteBuffer, changeOwnerToStorage: Boolean = true): Unit

Definition Classes
ColumnFormatValue
final def setDiskId(id: DiskId, dr: DiskRegionView): Unit

Definition Classes
ColumnFormatValue → SerializedDiskBuffer
def setVersionTag(versionTag: VersionTag[_ <: VersionSource[_]]): Unit

Definition Classes
ColumnDelta → Delta
final def size(): Int

Definition Classes
ColumnFormatValue → ByteBufferReference
final def synchronized[T0](arg0: ⇒ T0): T0

Definition Classes
AnyRef
def toData(out: DataOutput): Unit

Definition Classes
ColumnFormatValue → DataSerializableFixedID
def toString(): String

Definition Classes
ColumnDelta → ColumnFormatValue → AnyRef → Any
final def wait(): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )
final def wait(arg0: Long, arg1: Int): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )
final def wait(arg0: Long): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )
final def write(channel: OutputStreamChannel): Unit

Definition Classes
ColumnFormatValue → SerializedDiskBuffer
final def write(arg0: OutputStreamChannel, arg1: ByteBuffer): Unit

Attributes
protected[com.gemstone.gemfire.internal.cache.store]
Definition Classes
SerializedDiskBuffer
Annotations
@throws( classOf[java.io.IOException] )
final def writeSerializationHeader(src: ByteBuffer, writeBuf: ByteBuffer): Boolean

Definition Classes
ColumnFormatValue → SerializedDiskBuffer

Related Docs: object ColumnDelta | package impl

final class ColumnDelta extends ColumnFormatValue with Delta

Instance Constructors

new ColumnDelta(buffer: ByteBuffer)

new ColumnDelta()

Value Members

final def !=(arg0: Any): Boolean

final def ##(): Int

final def ==(arg0: Any): Boolean

def allowCreate(): Boolean

def apply(region: Region[_, _], key: AnyRef, oldValue: AnyRef, prepareForOffHeap: Boolean): AnyRef

def apply(putEvent: EntryEvent[_, _]): AnyRef

final def asInstanceOf[T0]: T0

final def channelSize(): Int

def clone(): AnyRef

def cloneDelta(): Delta

var columnBuffer: ByteBuffer

final def copyToHeap(owner: String): Unit

var diskId: DiskId

var diskRegion: DiskRegionView

def duplicateBuffer(buffer: ByteBuffer): ByteBuffer

final def eq(arg0: AnyRef): Boolean

def equals(arg0: Any): Boolean

def finalize(): Unit

def fromData(in: DataInput): Unit

final def getBufferRetain(): ByteBuffer

final def getClass(): Class[_]

final def getDSFID(): Int

def getDiskBufferRetain(): SerializedDiskBuffer

def getGfxdID(): Byte

def getOffHeapSizeInBytes(): Int

def getSerializationVersions(): Array[Version]

def getSizeInBytes(): Int

def getVersionTag(): VersionTag[_ <: VersionSource[_]]

def hashCode(): Int

final def isDirect: Boolean

final def isInstanceOf[T0]: Boolean

def merge(region: Region[_, _], toMerge: Delta): Delta

final def ne(arg0: AnyRef): Boolean

final def needsRelease(): Boolean

final def notify(): Unit

final def notifyAll(): Unit

def refCount(): Int

def release(): Unit

def releaseBuffer(): Unit

def retain(): Boolean

def setBuffer(buffer: ByteBuffer, changeOwnerToStorage: Boolean = true): Unit

final def setDiskId(id: DiskId, dr: DiskRegionView): Unit

def setVersionTag(versionTag: VersionTag[_ <: VersionSource[_]]): Unit

final def size(): Int

final def synchronized[T0](arg0: ⇒ T0): T0

def toData(out: DataOutput): Unit

def toString(): String

final def wait(): Unit

final def wait(arg0: Long, arg1: Int): Unit

final def wait(arg0: Long): Unit

final def write(channel: OutputStreamChannel): Unit

final def write(arg0: OutputStreamChannel, arg1: ByteBuffer): Unit

final def writeSerializationHeader(src: ByteBuffer, writeBuf: ByteBuffer): Boolean

Inherited from Delta

Inherited from ColumnFormatValue

Inherited from Sizeable

Inherited from GfxdSerializable

Inherited from GfxdDSFID

Inherited from DataSerializableFixedID

Inherited from SerializationVersions

Inherited from SerializedDiskBuffer

Inherited from ByteBufferReference

Inherited from AnyRef

Inherited from Any

Ungrouped