org.apache.cassandra.serializers

Class MapSerializer<K,V>

java.lang.Object

org.apache.cassandra.serializers.CollectionSerializer<java.util.Map<K,V>>

org.apache.cassandra.serializers.MapSerializer<K,V>

All Implemented Interfaces:

TypeSerializer<java.util.Map<K,V>>

public class MapSerializer<K,V>
extends CollectionSerializer<java.util.Map<K,V>>

Field Summary

Fields

Modifier and Type	Field and Description
TypeSerializer<K>	keys
TypeSerializer<V>	values

Method Summary

Modifier and Type	Method and Description
java.util.Map<K,V>	deserializeForNativeProtocol(java.nio.ByteBuffer bytes, int version)
int	getElementCount(java.util.Map<K,V> value)
static <K,V> MapSerializer<K,V>	getInstance(TypeSerializer<K> keys, TypeSerializer<V> values, java.util.Comparator<java.nio.ByteBuffer> comparator)
java.nio.ByteBuffer	getSerializedValue(java.nio.ByteBuffer serializedMap, java.nio.ByteBuffer serializedKey, AbstractType keyType) Given a serialized map, gets the value associated with a given key.
java.lang.Class<java.util.Map<K,V>>	getType()
java.util.List<java.nio.ByteBuffer>	serializeValues(java.util.Map<K,V> map)
java.lang.String	toString(java.util.Map<K,V> value)
void	validateForNativeProtocol(java.nio.ByteBuffer bytes, int version)

Methods inherited from class org.apache.cassandra.serializers.CollectionSerializer

deserialize, pack, readCollectionSize, readValue, serialize, sizeOfCollectionSize, sizeOfValue, validate, writeCollectionSize, writeValue

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.cassandra.serializers.TypeSerializer

toCQLLiteral

Field Detail

keys

public final TypeSerializer<K> keys

values

public final TypeSerializer<V> values

Method Detail

getInstance

public static <K,V> MapSerializer<K,V> getInstance(TypeSerializer<K> keys,
                                                   TypeSerializer<V> values,
                                                   java.util.Comparator<java.nio.ByteBuffer> comparator)

serializeValues

public java.util.List<java.nio.ByteBuffer> serializeValues(java.util.Map<K,V> map)

Specified by:

serializeValues in class CollectionSerializer<java.util.Map<K,V>>

getElementCount

public int getElementCount(java.util.Map<K,V> value)

Specified by:

getElementCount in class CollectionSerializer<java.util.Map<K,V>>

validateForNativeProtocol

public void validateForNativeProtocol(java.nio.ByteBuffer bytes,
                                      int version)

Specified by:

validateForNativeProtocol in class CollectionSerializer<java.util.Map<K,V>>

deserializeForNativeProtocol

public java.util.Map<K,V> deserializeForNativeProtocol(java.nio.ByteBuffer bytes,
                                                       int version)

Specified by:

deserializeForNativeProtocol in class CollectionSerializer<java.util.Map<K,V>>

getSerializedValue

public java.nio.ByteBuffer getSerializedValue(java.nio.ByteBuffer serializedMap,
                                              java.nio.ByteBuffer serializedKey,
                                              AbstractType keyType)

Given a serialized map, gets the value associated with a given key.

Parameters:

serializedMap - a serialized map

serializedKey - a serialized key

keyType - the key type for the map

Returns:

the value associated with the key if one exists, null otherwise

toString

public java.lang.String toString(java.util.Map<K,V> value)

getType

public java.lang.Class<java.util.Map<K,V>> getType()