com.hp.of.json

Class OfJsonCodec<T extends Structure>

java.lang.Object

com.hp.util.json.AbstractJsonCodec<T>

com.hp.of.json.OfJsonCodec<T>

Type Parameters:

T - type of POJO for which a JSON codec is provided

All Implemented Interfaces:

JsonCodec<T>

Direct Known Subclasses:

ActionCodec, InstructionCodec, MatchFieldCodec, MBodyExperimenterCodec, MBodyFlowStatsCodec, MBodyGroupDescStatsCodec, MBodyGroupFeaturesCodec, MBodyGroupStatsCodec, MBodyMeterFeaturesCodec, MBodyMeterStatsCodec, MBodyPortStatsCodec, MeterCodec, OfmFlowModCodec, OfmGroupModCodec, OfmMeterModCodec, PortCodec

public abstract class OfJsonCodec<T extends Structure>
extends AbstractJsonCodec<T>

The base JSON codec for all Openflow-related stuff, particularly all Structure classes. All JSON representations of the Structure will have an injected top-level "version" node that correspond to the version from Structure.getVersion().

Accordingly, the JsonCodec.decode(ObjectNode) method implemented by sub-classes of this class must ensure that the ObjectNode parameter indeed contains a "version" node so that it can re-hydrate the Structure POJO successfully.

Author:

Liem Nguyen

Field Summary

Fields

Modifier and Type	Field and Description
static String	VERSION

Fields inherited from class com.hp.util.json.AbstractJsonCodec

log, mapper, NO_DECODING_SUP, root, roots

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	OfJsonCodec(String root, String roots)

Method Summary

Methods

Modifier and Type	Method and Description
T	decode(String json) Decodes the JSON string into a typed POJO.
List<T>	decodeList(String json) Decodes the JSON string into a typed list of POJO.
String	encode(T pojo, boolean prettyPrint) Encodes the given POJO to its JSON string representation.
String	encodeList(Collection<T> pojos, boolean prettyPrint) Encodes the collection of POJOs to their JSON string representation.
protected ProtocolVersion	version(com.fasterxml.jackson.databind.node.ObjectNode node) Retrieve the protocol version from a given json node that contains the VERSION tag.

Methods inherited from class com.hp.util.json.AbstractJsonCodec

arrayNode, encodeIterator, encodeIterator, encodeList, fromEnums, isMissingContent, longVal, objectNode, read, root, roots, toEnums, write

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.hp.util.json.JsonCodec

decode, encode

Field Detail

VERSION

public static final String VERSION

See Also:

Constant Field Values

Constructor Detail

OfJsonCodec

protected OfJsonCodec(String root,
           String roots)

Method Detail

decode

public T decode(String json)

Description copied from interface: JsonCodec

Decodes the JSON string into a typed POJO.

Specified by:

decode in interface JsonCodec<T extends Structure>

Overrides:

decode in class AbstractJsonCodec<T extends Structure>

Parameters:

json - JSON string representation of the typed POJO

Returns:

typed POJO

decodeList

public List<T> decodeList(String json)

Description copied from interface: JsonCodec

Decodes the JSON string into a typed list of POJO.

Specified by:

decodeList in interface JsonCodec<T extends Structure>

Overrides:

decodeList in class AbstractJsonCodec<T extends Structure>

Parameters:

json - JSON string representation of the typed list of POJOs

Returns:

typed list of POJOs

encode

public String encode(T pojo,
            boolean prettyPrint)

Description copied from interface: JsonCodec

Encodes the given POJO to its JSON string representation.

Specified by:

encode in interface JsonCodec<T extends Structure>

Overrides:

encode in class AbstractJsonCodec<T extends Structure>

Parameters:

pojo - POJO to encode

prettyPrint - Human-readable formatted JSON if true, single-line JSON otherwise

Returns:

JSON string representation of POJO

encodeList

public String encodeList(Collection<T> pojos,
                boolean prettyPrint)

Description copied from interface: JsonCodec

Encodes the collection of POJOs to their JSON string representation.

Specified by:

encodeList in interface JsonCodec<T extends Structure>

Overrides:

encodeList in class AbstractJsonCodec<T extends Structure>

Parameters:

pojos - list of POJO's to encode

prettyPrint - human-readable formatted JSON if true, single-line JSON otherwise

Returns:

JSON string representation of the list of POJO's

version

protected ProtocolVersion version(com.fasterxml.jackson.databind.node.ObjectNode node)

Retrieve the protocol version from a given json node that contains the VERSION tag.

Parameters:

node - JSON node that contains the VERSION tag

Returns:

protocol version