java.lang.Object
- org.apache.cassandra.db.DeletionTime

All Implemented Interfaces:

java.lang.Comparable<DeletionTime>, IMeasurableMemory

Direct Known Subclasses:

DeletionTime.InvalidDeletionTime
```
public class DeletionTime
extends java.lang.Object
implements java.lang.Comparable<DeletionTime>, IMeasurableMemory
```
Information on deletion of a storage engine object.

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description
`static class`	`DeletionTime.InvalidDeletionTime`
`static class`	`DeletionTime.LegacySerializer`
`static class`	`DeletionTime.Serializer`

Field Summary

Fields
Modifier and Type Field Description

static long EMPTY_SIZE

static DeletionTime LIVE
A special DeletionTime that signifies that there is no top-level (row) tombstone.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`static DeletionTime`	`build(long markedForDeleteAt, long localDeletionTime)`
`int`	`compareTo(DeletionTime dt)`
`int`	`dataSize()`
`boolean`	`deletes(long timestamp)`
`boolean`	`deletes(LivenessInfo info)`
`boolean`	`deletes(Cell<?> cell)`
`void`	`digest(Digest digest)`
`boolean`	`equals(java.lang.Object o)`
`static DeletionTime.Serializer`	`getSerializer(Version version)`
`int`	`hashCode()`
`boolean`	`isLive()`	Returns whether this DeletionTime is live, that is deletes no columns.
`long`	`localDeletionTime()`	The local server timestamp, in seconds since the unix epoch, at which this tombstone was created.
`long`	`markedForDeleteAt()`	A timestamp (typically in microseconds since the unix epoch, although this is not enforced) after which data should be considered deleted.
`boolean`	`supersedes(DeletionTime dt)`
`java.lang.String`	`toString()`
`long`	`unsharedHeapSize()`
`boolean`	`validate()`	Check if this deletion time is valid.

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

- Field Detail
  - EMPTY_SIZE
```
public static final long EMPTY_SIZE
```
  - LIVE
```
public static final DeletionTime LIVE
```
    A special DeletionTime that signifies that there is no top-level (row) tombstone.
- Method Detail
  - build
```
public static DeletionTime build(long markedForDeleteAt,
                                 long localDeletionTime)
```
  - markedForDeleteAt
```
public long markedForDeleteAt()
```
    A timestamp (typically in microseconds since the unix epoch, although this is not enforced) after which data should be considered deleted. If set to Long.MIN_VALUE, this implies that the data has not been marked for deletion at all.
  - localDeletionTime
```
public long localDeletionTime()
```
    The local server timestamp, in seconds since the unix epoch, at which this tombstone was created. This is only used for purposes of purging the tombstone after gc_grace_seconds have elapsed.
  - isLive
```
public boolean isLive()
```
    Returns whether this DeletionTime is live, that is deletes no columns.
  - digest
```
public void digest(Digest digest)
```
  - validate
```
public boolean validate()
```
    Check if this deletion time is valid. This is always true, because - as we permit negative timestamps, markedForDeleteAt can be negative. - localDeletionTime is stored as an unsigned int and cannot be negative.
    
    Returns:
    
    true if it is valid
  - equals
```
public boolean equals(java.lang.Object o)
```
    Overrides:
    
    equals in class java.lang.Object
  - hashCode
```
public final int hashCode()
```
    Overrides:
    
    hashCode in class java.lang.Object
  - toString
```
public java.lang.String toString()
```
    Overrides:
    
    toString in class java.lang.Object
  - compareTo
```
public int compareTo(DeletionTime dt)
```
    Specified by:
    
    compareTo in interface java.lang.Comparable<DeletionTime>
  - supersedes
```
public boolean supersedes(DeletionTime dt)
```
  - deletes
```
public boolean deletes(LivenessInfo info)
```
  - deletes
```
public boolean deletes(Cell<?> cell)
```
  - deletes
```
public boolean deletes(long timestamp)
```
  - dataSize
```
public int dataSize()
```
  - unsharedHeapSize
```
public long unsharedHeapSize()
```
    Specified by:
    
    unsharedHeapSize in interface IMeasurableMemory
    
    Returns:
    
    the amount of on-heap memory retained by the object that might be reclaimed if the object were reclaimed, i.e. it should try to exclude globally cached data where possible, or counting portions of arrays that are referenced by the object but used by other objects only (e.g. slabbed byte-buffers), etc.
  - getSerializer
```
public static DeletionTime.Serializer getSerializer(Version version)
```

Modifier and Type	Field	Description
`static long`	`EMPTY_SIZE`
`static DeletionTime`	`LIVE`	A special DeletionTime that signifies that there is no top-level (row) tombstone.

Class DeletionTime

Nested Class Summary

Field Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

EMPTY_SIZE

LIVE

Method Detail

build

markedForDeleteAt

localDeletionTime

isLive

digest

validate

equals

hashCode

toString

compareTo

supersedes

deletes

deletes

deletes

dataSize

unsharedHeapSize

getSerializer