edu.umass.cs.nio

Class JSONPacket

java.lang.Object

edu.umass.cs.nio.JSONPacket

Direct Known Subclasses:

AppRequest, PaxosAppRequest, PaxosPacket, ReplicableClientRequest, TXPacket

public abstract class JSONPacket
extends java.lang.Object

Author:

V. Arun

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	PACKET_TYPE JSON key for the integer packet type.
protected int	type

Constructor Summary

Constructors

Constructor and Description
JSONPacket(IntegerPacketType t)
JSONPacket(org.json.JSONObject json)

Method Summary

Modifier and Type	Method and Description
static boolean	couldBeJSON(byte[] bytes)
static boolean	couldBeJSON(byte[] bytes, int offset)
static boolean	couldBeJSON(java.lang.String str)
static boolean	couldBeJSONArray(java.lang.String str)
static boolean	couldBeJSONObject(java.lang.String str)
static java.lang.Integer	getPacketType(org.json.JSONObject json)
static void	putPacketType(org.json.JSONObject json, int type) Puts type into json.
static void	putPacketType(org.json.JSONObject json, IntegerPacketType type) Puts type.getInt() into json.
org.json.JSONObject	toJSONObject()
protected abstract org.json.JSONObject	toJSONObjectImpl()
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

PACKET_TYPE

public static final java.lang.String PACKET_TYPE

JSON key for the integer packet type.

See Also:

Constant Field Values

type

protected int type

Constructor Detail

JSONPacket

public JSONPacket(IntegerPacketType t)

Parameters:

t -

JSONPacket

public JSONPacket(org.json.JSONObject json)
           throws org.json.JSONException

Parameters:

json -

Throws:

org.json.JSONException

Method Detail

toJSONObjectImpl

protected abstract org.json.JSONObject toJSONObjectImpl()
                                                 throws org.json.JSONException

Returns:

JSONObject corresponding to fields in classes extending this class.

Throws:

org.json.JSONException

toJSONObject

public org.json.JSONObject toJSONObject()
                                 throws org.json.JSONException

Returns:

JSONObject corresponding to this class' (including subclasses) fields.

Throws:

org.json.JSONException

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

getPacketType

public static final java.lang.Integer getPacketType(org.json.JSONObject json)
                                             throws org.json.JSONException

Parameters:

json -

Returns:

Integer packet type.

Throws:

org.json.JSONException

putPacketType

public static final void putPacketType(org.json.JSONObject json,
                                       int type)

Puts type into json.

Parameters:

json -

type -

putPacketType

public static final void putPacketType(org.json.JSONObject json,
                                       IntegerPacketType type)

Puts type.getInt() into json.

Parameters:

json -

type -

couldBeJSON

public static final boolean couldBeJSON(java.lang.String str)

Parameters:

str -

Returns:

True if str could possibly (but not necessarily) be in JSON format. This sanity check is quicker compared to taking a JSONException hit.

couldBeJSONObject

public static final boolean couldBeJSONObject(java.lang.String str)

Parameters:

str -

Returns:

True if str starts with "{"

couldBeJSONArray

public static final boolean couldBeJSONArray(java.lang.String str)

Parameters:

str -

Returns:

True if str starts with "["

couldBeJSON

public static final boolean couldBeJSON(byte[] bytes)

Parameters:

bytes -

Returns:

True if this bytes could be possibly (but not necessarily) be in JSON format assuming the default MessageExtractor encoding.

couldBeJSON

public static final boolean couldBeJSON(byte[] bytes,
                                        int offset)

Parameters:

bytes -

offset -

Returns:

True if this bytes could be possibly (but not necessarily) be in JSON format assuming the default MessageExtractor encoding.