DeletionInfo (apache-cassandra API)

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

```
public class DeletionInfo
extends java.lang.Object
```
A combination of a top-level (or row) tombstone and range tombstones describing the deletions within a ColumnFamily (or row).

Nested Class Summary

Nested Classes
Modifier and Type	Class and Description
`class`	`DeletionInfo.InOrderTester` This object allow testing whether a given column (name/timestamp) is deleted or not by this DeletionInfo, assuming that the columns given to this object are passed in forward or reversed comparator sorted order.
`static class`	`DeletionInfo.Serializer`

Constructor Summary

Constructors
Constructor and Description
`DeletionInfo(java.nio.ByteBuffer start, java.nio.ByteBuffer end, java.util.Comparator<java.nio.ByteBuffer> comparator, long markedForDeleteAt, int localDeletionTime)`
`DeletionInfo(DeletionTime topLevel)`
`DeletionInfo(long markedForDeleteAt, int localDeletionTime)` Creates a DeletionInfo with only a top-level (row) tombstone.
`DeletionInfo(RangeTombstone rangeTombstone, java.util.Comparator<java.nio.ByteBuffer> comparator)`

Method Summary

Methods
Modifier and Type	Method and Description
`DeletionInfo`	`add(DeletionInfo newInfo)` Combines another DeletionInfo with this one and returns the result.
`void`	`add(DeletionTime newInfo)` Potentially replaces the top-level tombstone with another, keeping whichever has the higher markedForDeleteAt timestamp.
`void`	`add(RangeTombstone tombstone, java.util.Comparator<java.nio.ByteBuffer> comparator)`
`DeletionInfo`	`copy()`
`int`	`dataSize()`
`boolean`	`equals(java.lang.Object o)`
`DeletionTime`	`getTopLevelDeletion()` Returns the top-level (or "row") tombstone.
`int`	`hashCode()`
`boolean`	`hasPurgeableTombstones(int gcBefore)` Returns true if `purge` would remove the top-level tombstone or any of the range tombstones, false otherwise.
`boolean`	`hasRanges()`
`DeletionInfo.InOrderTester`	`inOrderTester(boolean reversed)` Returns a new `DeletionInfo.InOrderTester` given the order in which columns will be passed to it.
`boolean`	`isDeleted(java.nio.ByteBuffer name, long timestamp)`
`boolean`	`isDeleted(Column column)` Return whether a given column is deleted by the container having this deletion info.
`boolean`	`isLive()` Returns whether this DeletionInfo is live, that is deletes no columns.
`static DeletionInfo`	`live()` Returns a new DeletionInfo that has no top-level tombstone or any range tombstones.
`long`	`maxTimestamp()` Returns the maximum timestamp in any of the range tombstones or the top-level tombstone.
`boolean`	`mayModify(DeletionInfo delInfo)` Whether this deletion info may modify the provided one if added to it.
`long`	`minTimestamp()` Returns the minimum timestamp in any of the range tombstones or the top-level tombstone.
`void`	`purge(int gcBefore)` Purge every tombstones that are older than `gcbefore`.
`int`	`rangeCount()`
`DeletionTime`	`rangeCovering(java.nio.ByteBuffer name)`
`java.util.Iterator<RangeTombstone>`	`rangeIterator()`
`static DeletionInfo.Serializer`	`serializer()`
`java.lang.String`	`toString()`
`void`	`updateAllTimestamp(long timestamp)`

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

- Constructor Detail
  - DeletionInfo
```
public DeletionInfo(long markedForDeleteAt,
            int localDeletionTime)
```
    Creates a DeletionInfo with only a top-level (row) tombstone.
    
    Parameters:
    markedForDeleteAt - the time after which the entire row should be considered deleted
    localDeletionTime - what time the deletion write was applied locally (for purposes of purging the tombstone after gc_grace_seconds).
  - DeletionInfo
```
public DeletionInfo(DeletionTime topLevel)
```
  - DeletionInfo
```
public DeletionInfo(java.nio.ByteBuffer start,
            java.nio.ByteBuffer end,
            java.util.Comparator<java.nio.ByteBuffer> comparator,
            long markedForDeleteAt,
            int localDeletionTime)
```
  - DeletionInfo
```
public DeletionInfo(RangeTombstone rangeTombstone,
            java.util.Comparator<java.nio.ByteBuffer> comparator)
```
- Method Detail
  - live
```
public static DeletionInfo live()
```
    Returns a new DeletionInfo that has no top-level tombstone or any range tombstones.
  - serializer
```
public static DeletionInfo.Serializer serializer()
```
  - copy
```
public DeletionInfo copy()
```
  - isLive
```
public boolean isLive()
```
    Returns whether this DeletionInfo is live, that is deletes no columns.
  - isDeleted
```
public boolean isDeleted(Column column)
```
    Return whether a given column is deleted by the container having this deletion info.
    
    Parameters:
    column - the column to check.
    
    Returns:
    true if the column is deleted, false otherwise
  - isDeleted
```
public boolean isDeleted(java.nio.ByteBuffer name,
                long timestamp)
```
  - inOrderTester
```
public DeletionInfo.InOrderTester inOrderTester(boolean reversed)
```
    Returns a new DeletionInfo.InOrderTester given the order in which columns will be passed to it.
  - purge
```
public void purge(int gcBefore)
```
    Purge every tombstones that are older than gcbefore.
    
    Parameters:
    gcBefore - timestamp (in seconds) before which tombstones should be purged
  - hasPurgeableTombstones
```
public boolean hasPurgeableTombstones(int gcBefore)
```
    Returns true if purge would remove the top-level tombstone or any of the range tombstones, false otherwise.
    
    Parameters:
    gcBefore - timestamp (in seconds) before which tombstones should be purged
  - add
```
public void add(DeletionTime newInfo)
```
    Potentially replaces the top-level tombstone with another, keeping whichever has the higher markedForDeleteAt timestamp.
    
    Parameters:
    newInfo -
  - add
```
public void add(RangeTombstone tombstone,
       java.util.Comparator<java.nio.ByteBuffer> comparator)
```
  - add
```
public DeletionInfo add(DeletionInfo newInfo)
```
    Combines another DeletionInfo with this one and returns the result. Whichever top-level tombstone has the higher markedForDeleteAt timestamp will be kept, along with its localDeletionTime. The range tombstones will be combined.
    
    Returns:
    this object.
  - minTimestamp
```
public long minTimestamp()
```
    Returns the minimum timestamp in any of the range tombstones or the top-level tombstone.
  - maxTimestamp
```
public long maxTimestamp()
```
    Returns the maximum timestamp in any of the range tombstones or the top-level tombstone.
  - getTopLevelDeletion
```
public DeletionTime getTopLevelDeletion()
```
    Returns the top-level (or "row") tombstone.
  - rangeIterator
```
public java.util.Iterator<RangeTombstone> rangeIterator()
```
  - rangeCovering
```
public DeletionTime rangeCovering(java.nio.ByteBuffer name)
```
  - dataSize
```
public int dataSize()
```
  - hasRanges
```
public boolean hasRanges()
```
  - rangeCount
```
public int rangeCount()
```
  - mayModify
```
public boolean mayModify(DeletionInfo delInfo)
```
    Whether this deletion info may modify the provided one if added to it.
  - toString
```
public java.lang.String toString()
```
    Overrides:
    
    toString in class java.lang.Object
  - updateAllTimestamp
```
public void updateAllTimestamp(long timestamp)
```
  - 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

Class DeletionInfo

Nested Class Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

DeletionInfo

DeletionInfo

DeletionInfo

DeletionInfo

Method Detail

live

serializer

copy

isLive

isDeleted

isDeleted

inOrderTester

purge

hasPurgeableTombstones

add

add

add

minTimestamp

maxTimestamp

getTopLevelDeletion

rangeIterator

rangeCovering

dataSize

hasRanges

rangeCount

mayModify

toString

updateAllTimestamp

equals

hashCode