org.apache.nifi.distributed.cache.client.adapter

Class MapValuesInboundAdapter<K,V>

java.lang.Object

org.apache.nifi.distributed.cache.client.adapter.MapValuesInboundAdapter<K,V>

Type Parameters:

K - the expected type of the service keys

V - the expected type of the service response values

All Implemented Interfaces:

InboundAdapter

public class MapValuesInboundAdapter<K,V>
extends Object
implements InboundAdapter

Implementation of InboundAdapter where the service response payload is expected to be a collection of values of type V. These are to be reassembled into a map using the keys provided by the caller.

Field Summary

Fields

Modifier and Type	Field and Description
private io.netty.buffer.ByteBuf	byteBuf Container for bytes queued from the service response Channel.
private Deserializer<V>	deserializerV The deserializer to be used to construct the values in the service response object.
private InboundToken<V>	inboundToken The state of receipt of an individual service response token.
private Iterator<K>	iteratorKeys An iterator used to traverse the caller-supplied keys, in order to reassemble the service map.
private Map<K,V>	result The reassembled map resulting from the service call.

Constructor Summary

Constructors

Constructor and Description
MapValuesInboundAdapter(Set<K> keys, Deserializer<V> deserializerV, Map<K,V> result) Constructor.

Method Summary

Modifier and Type	Method and Description
void	dequeue() Parse the received content into a form suitable for supplying to the remote method caller.
Map<K,V>	getResult()
boolean	isComplete() Check for receipt of all response content expected from server.
void	queue(byte[] bytes) Add Channel content to a queue for later processing

Methods inherited from class java.lang.Object

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

Field Detail

iteratorKeys

private final Iterator<K> iteratorKeys

An iterator used to traverse the caller-supplied keys, in order to reassemble the service map.

deserializerV

private final Deserializer<V> deserializerV

The deserializer to be used to construct the values in the service response object.

byteBuf

private final io.netty.buffer.ByteBuf byteBuf

Container for bytes queued from the service response Channel.

inboundToken

private final InboundToken<V> inboundToken

The state of receipt of an individual service response token.

result

private final Map<K,V> result

The reassembled map resulting from the service call.

Constructor Detail

MapValuesInboundAdapter

public MapValuesInboundAdapter(Set<K> keys,
                               Deserializer<V> deserializerV,
                               Map<K,V> result)

Constructor.

Parameters:

keys - the map keys requested by the caller

deserializerV - the deserializer to be used to instantiate the service response map values

result - container for the map entries reconstituted from the service response

Method Detail

getResult

public Map<K,V> getResult()

Returns:

the service method response map

isComplete

public boolean isComplete()

Description copied from interface: InboundAdapter

Check for receipt of all response content expected from server.

Specified by:

isComplete in interface InboundAdapter

Returns:

true iff the server response has been completely received

queue

public void queue(byte[] bytes)

Description copied from interface: InboundAdapter

Add Channel content to a queue for later processing

Specified by:

queue in interface InboundAdapter

Parameters:

bytes - the remote content to queue

dequeue

public void dequeue()
             throws IOException

Description copied from interface: InboundAdapter

Parse the received content into a form suitable for supplying to the remote method caller.

Specified by:

dequeue in interface InboundAdapter

Throws:

IOException - on failure parsing the content