Package org.elasticsearch.cluster

Class DiffableUtils.MapDiff<K,T,M>

java.lang.Object

org.elasticsearch.cluster.DiffableUtils.MapDiff<K,T,M>

Type Parameters:

K - the type of map keys

T - the type of map values

M - the map implementation type

All Implemented Interfaces:

Diff<M>, Writeable

Direct Known Subclasses:

DiffableUtils.ImmutableOpenMapDiff

Enclosing class:

DiffableUtils

public abstract static class DiffableUtils.MapDiff<K,T,M>
extends Object
implements Diff<M>

Represents differences between two maps of objects and is used as base class for different map implementations. Implements serialization. How differences are applied is left to subclasses.

Nested Class Summary

Nested classes/interfaces inherited from interface org.elasticsearch.common.io.stream.Writeable

Writeable.Reader<V>, Writeable.Writer<V>

Field Summary

Fields

Modifier and Type	Field	Description
protected List<K>	deletes
protected Map<K,Diff<T>>	diffs
protected DiffableUtils.KeySerializer<K>	keySerializer
protected Map<K,T>	upserts
protected DiffableUtils.ValueSerializer<K,T>	valueSerializer

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	MapDiff(DiffableUtils.KeySerializer<K> keySerializer, DiffableUtils.ValueSerializer<K,T> valueSerializer)
protected	MapDiff(DiffableUtils.KeySerializer<K> keySerializer, DiffableUtils.ValueSerializer<K,T> valueSerializer, List<K> deletes, Map<K,Diff<T>> diffs, Map<K,T> upserts)
protected	MapDiff(StreamInput in, DiffableUtils.KeySerializer<K> keySerializer, DiffableUtils.ValueSerializer<K,T> valueSerializer)

Method Summary

Modifier and Type	Method	Description
List<K>	getDeletes()	The keys that, when this diff is applied to a map, should be removed from the map.
Map<K,Diff<T>>	getDiffs()	Map entries that, when this diff is applied to a map, should be incrementally updated.
Map<K,T>	getUpserts()	Map entries that, when this diff is applied to a map, should be added to the map or fully replace the previous value.
void	writeTo(StreamOutput out)	Write this into the StreamOutput.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.elasticsearch.cluster.Diff

apply

Field Details

deletes

protected final List<K> deletes

diffs

protected final Map<K,Diff<T>> diffs

upserts

protected final Map<K,T> upserts

keySerializer

protected final DiffableUtils.KeySerializer<K> keySerializer

valueSerializer

protected final DiffableUtils.ValueSerializer<K,T> valueSerializer

Constructor Details

MapDiff

protected MapDiff(DiffableUtils.KeySerializer<K> keySerializer,
 DiffableUtils.ValueSerializer<K,T> valueSerializer)

MapDiff

protected MapDiff(DiffableUtils.KeySerializer<K> keySerializer,
 DiffableUtils.ValueSerializer<K,T> valueSerializer,
 List<K> deletes,
 Map<K,Diff<T>> diffs,
 Map<K,T> upserts)

MapDiff

protected MapDiff(StreamInput in,
 DiffableUtils.KeySerializer<K> keySerializer,
 DiffableUtils.ValueSerializer<K,T> valueSerializer)
           throws IOException

Throws:

IOException

Method Details

getDeletes

public List<K> getDeletes()

The keys that, when this diff is applied to a map, should be removed from the map.

Returns:

the list of keys that are deleted

getDiffs

public Map<K,Diff<T>> getDiffs()

Map entries that, when this diff is applied to a map, should be incrementally updated. The incremental update is represented using the Diff interface.

Returns:

the map entries that are incrementally updated

getUpserts

public Map<K,T> getUpserts()

Map entries that, when this diff is applied to a map, should be added to the map or fully replace the previous value.

Returns:

the map entries that are additions or full updates

writeTo

public void writeTo(StreamOutput out)
             throws IOException

Description copied from interface: Writeable

Write this into the StreamOutput.

Specified by:

writeTo in interface Writeable

Throws:

IOException