com.hazelcast.util

Class JsonUtil

java.lang.Object

com.hazelcast.util.JsonUtil

public final class JsonUtil
extends Object

Utility class to deal with Json.

Method Summary

Modifier and Type	Method and Description
static Map<String,Comparable>	fromJsonObject(JsonObject object) Transforms the provided JsonObject int a map of name/value pairs.
static JsonArray	getArray(JsonObject object, String field) Returns a field in a Json object as an array.
static JsonArray	getArray(JsonObject object, String field, JsonArray defaultValue) Returns a field in a Json object as an array.
static boolean	getBoolean(JsonObject object, String field) Returns a field in a Json object as a boolean.
static boolean	getBoolean(JsonObject object, String field, boolean defaultValue) Returns a field in a Json object as a boolean.
static double	getDouble(JsonObject object, String field) Returns a field in a Json object as a double.
static double	getDouble(JsonObject object, String field, double defaultValue) Returns a field in a Json object as a double.
static float	getFloat(JsonObject object, String field) Returns a field in a Json object as a float.
static float	getFloat(JsonObject object, String field, float defaultValue) Returns a field in a Json object as a float.
static int	getInt(JsonObject object, String field) Returns a field in a Json object as an int.
static int	getInt(JsonObject object, String field, int defaultValue) Returns a field in a Json object as an int.
static long	getLong(JsonObject object, String field) Returns a field in a Json object as a long.
static long	getLong(JsonObject object, String field, long defaultValue) Returns a field in a Json object as a long.
static JsonObject	getObject(JsonObject object, String field) Returns a field in a Json object as an object.
static JsonObject	getObject(JsonObject object, String field, JsonObject defaultValue) Returns a field in a Json object as an object.
static String	getString(JsonObject object, String field) Returns a field in a Json object as a string.
static String	getString(JsonObject object, String field, String defaultValue) Returns a field in a Json object as a string.
static String	toJson(Object value) Returns the JSON representation of the provided value
static JsonObject	toJsonObject(Map<String,?> map) Transforms the provided map of name/value pairs into a JsonObject.

Methods inherited from class java.lang.Object

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

Method Detail

getInt

public static int getInt(JsonObject object,
                         String field)

Returns a field in a Json object as an int. Throws IllegalArgumentException if the field value is null.

Parameters:

object - the Json Object

field - the field in the Json object to return

Returns:

the Json field value as an int

getInt

public static int getInt(JsonObject object,
                         String field,
                         int defaultValue)

Returns a field in a Json object as an int.

Parameters:

object - the Json Object

field - the field in the Json object to return

defaultValue - a default value for the field if the field value is null

Returns:

the Json field value as an int

getLong

public static long getLong(JsonObject object,
                           String field)

Returns a field in a Json object as a long. Throws IllegalArgumentException if the field value is null.

Parameters:

object - the Json Object

field - the field in the Json object to return

Returns:

the Json field value as a long

getLong

public static long getLong(JsonObject object,
                           String field,
                           long defaultValue)

Returns a field in a Json object as a long.

Parameters:

object - the Json Object

field - the field in the Json object to return

defaultValue - a default value for the field if the field value is null

Returns:

the Json field value as a long

getDouble

public static double getDouble(JsonObject object,
                               String field)

Returns a field in a Json object as a double. Throws IllegalArgumentException if the field value is null.

Parameters:

object - the Json Object

field - the field in the Json object to return

Returns:

the Json field value as a double

getDouble

public static double getDouble(JsonObject object,
                               String field,
                               double defaultValue)

Returns a field in a Json object as a double.

Parameters:

object - the Json Object

field - the field in the Json object to return

defaultValue - a default value for the field if the field value is null

Returns:

the Json field value as a double

getFloat

public static float getFloat(JsonObject object,
                             String field)

Returns a field in a Json object as a float. Throws IllegalArgumentException if the field value is null.

Parameters:

object - the Json Object

field - the field in the Json object to return

Returns:

the Json field value as a float

getFloat

public static float getFloat(JsonObject object,
                             String field,
                             float defaultValue)

Returns a field in a Json object as a float.

Parameters:

object - the Json Object

field - the field in the Json object to return

defaultValue - a default value for the field if the field value is null

Returns:

the Json field value as a float

getString

public static String getString(JsonObject object,
                               String field)

Returns a field in a Json object as a string. Throws IllegalArgumentException if the field value is null.

Parameters:

object - the Json Object

field - the field in the Json object to return

Returns:

the Json field value as a string

getString

public static String getString(JsonObject object,
                               String field,
                               String defaultValue)

Returns a field in a Json object as a string.

Parameters:

object - the Json Object

field - the field in the Json object to return

defaultValue - a default value for the field if the field value is null

Returns:

the Json field value as a string

getBoolean

public static boolean getBoolean(JsonObject object,
                                 String field)

Returns a field in a Json object as a boolean. Throws IllegalArgumentException if the field value is null.

Parameters:

object - the Json Object

field - the field in the Json object to return

Returns:

the Json field value as a boolean

getBoolean

public static boolean getBoolean(JsonObject object,
                                 String field,
                                 boolean defaultValue)

Returns a field in a Json object as a boolean.

Parameters:

object - the Json Object

field - the field in the Json object to return

defaultValue - a default value for the field if the field value is null

Returns:

the Json field value as a boolean

getArray

public static JsonArray getArray(JsonObject object,
                                 String field)

Returns a field in a Json object as an array. Throws IllegalArgumentException if the field value is null.

Parameters:

object - the Json Object

field - the field in the Json object to return

Returns:

the Json field value as an array

getArray

public static JsonArray getArray(JsonObject object,
                                 String field,
                                 JsonArray defaultValue)

Returns a field in a Json object as an array.

Parameters:

object - the Json Object

field - the field in the Json object to return

defaultValue - a default value for the field if the field value is null

Returns:

the Json field value as a Json array

getObject

public static JsonObject getObject(JsonObject object,
                                   String field)

Returns a field in a Json object as an object. Throws IllegalArgumentException if the field value is null.

Parameters:

object - the Json object

field - the field in the Json object to return

Returns:

the Json field value as a Json object

getObject

public static JsonObject getObject(JsonObject object,
                                   String field,
                                   JsonObject defaultValue)

Returns a field in a Json object as an object.

Parameters:

object - the Json object

field - the field in the Json object to return

defaultValue - a default value for the field if the field value is null

Returns:

the Json field value as a Json object

fromJsonObject

public static Map<String,Comparable> fromJsonObject(JsonObject object)

Transforms the provided JsonObject int a map of name/value pairs.

Parameters:

object - the JSON object

Returns:

map from JSON name to value

toJsonObject

public static JsonObject toJsonObject(Map<String,?> map)

Transforms the provided map of name/value pairs into a JsonObject.

Parameters:

map - map of JSON name-value pairs

Returns:

the JSON object

toJson

public static String toJson(Object value)

Returns the JSON representation of the provided value

Parameters:

value - the value to serialize to JSON

Returns:

the serialized value