com.iotize.jvm

Class JSON

java.lang.Object

com.iotize.jvm.JSON

Direct Known Subclasses:

JSONArray, JSONObject

public class JSON
extends java.lang.Object

Field Summary

Fields

Modifier and Type	Field and Description
static int	typArray
static int	typBool
static int	typInvalid
static int	typNull
static int	typNumber
static int	typRef
static int	typString

Constructor Summary

Constructors

Constructor and Description
JSON()

Method Summary

Modifier and Type	Method and Description
JSONObject	add(java.lang.String name, boolean value)
JSONObject	add(java.lang.String name, double value)
JSONObject	add(java.lang.String name, int value)
JSONObject	add(java.lang.String name, JSON value)
JSONObject	add(java.lang.String name, java.lang.String value)
JSON	addBool(java.lang.String s, boolean val) Add a child of type boolean.
JSON	addDouble(java.lang.String s, double val) Add a child of type double.
JSON	addInt(java.lang.String s, int val) Add a child of type int.
JSON	addItem(java.lang.String s, JSON js) Add a child of type JSON (en existing node).
JSON	addString(java.lang.String s, java.lang.String val) Add a child of type String.
static JSONArray	createArray(boolean[] arr)
static JSONArray	createArray(double[] arr)
static JSONArray	createArray(int[] arr)
static JSONArray	createArray(JSON[] arr)
static JSON	createBoolArray(boolean[] val) Creates a JSON array from the given value.
static JSON	createDoubleArray(double[] val) Creates a JSON array from the given value.
static JSON	createIntArray(int[] val) Creates a JSON array from the given value.
static JSON	createStringArray(java.lang.String[] val) Creates a JSON array from the given value.
void	deleteItemFromArray(int index) Delete an item in JSON object
void	deleteItemFromObject(java.lang.String key) Delete an item in JSON object
JSON	detachItemFromArray(int index) Detach an item from JSON array
JSON	detachItemFromObject(java.lang.String key) Detach an item from JSON object
JSON	getArrayItem(int index) Returns the array item as a new JSON object.
JSON	getObjectItem(java.lang.String name) looks for an item with the specified name
int	getSize() Checks if the item is an array and returns its size
int	getType()
boolean	getValueBool() Checks if the item is a boolean and returns its value
double	getValueDouble() Checks if the item is a double integer and returns its valueDouble
int	getValueInt() Checks if the item is a number and returns its valueInt
java.lang.String	getValueStr() Checks if the item is a string and returns its valueString
static JSON	parse(byte[] buf) Parses the given buffer (for example retrieved from an MQTT message) into a JSON object.
static JSON	parse(java.lang.String str) Parses the given string (for example retrieved from an MQTT message) into a JSON object.
java.lang.String	serialize() Serializes the JSON object to a String, for instance to be sent over MQTT.
java.lang.String	serializeMinify() Serializes the JSON object to a String, for instance, to be sent over MQTT.

Methods inherited from class java.lang.Object

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

Field Detail

typInvalid

public static final int typInvalid

See Also:

Constant Field Values

typNull

public static final int typNull

See Also:

Constant Field Values

typBool

public static final int typBool

See Also:

Constant Field Values

typNumber

public static final int typNumber

See Also:

Constant Field Values

typString

public static final int typString

See Also:

Constant Field Values

typArray

public static final int typArray

See Also:

Constant Field Values

typRef

public static final int typRef

See Also:

Constant Field Values

Constructor Detail

JSON

public JSON()

Method Detail

getType

public int getType()

Returns:

code of the type of the data

getObjectItem

public JSON getObjectItem(java.lang.String name)

looks for an item with the specified name

Parameters:

name -

Returns:

the corresponding JSON item, or null if it has not been found.

getValueStr

public java.lang.String getValueStr()

Checks if the item is a string and returns its valueString

Returns:

the string value of the JSON object, null otherwise

getValueInt

public int getValueInt()

Checks if the item is a number and returns its valueInt

Returns:

the int value of the JSON object, -1 otherwise

getValueDouble

public double getValueDouble()

Checks if the item is a double integer and returns its valueDouble

Returns:

the double value of the JSON object, -1.0 otherwise

getValueBool

public boolean getValueBool()

Checks if the item is a boolean and returns its value

Returns:

the boolean value of the JSON object.

serialize

public java.lang.String serialize()

Serializes the JSON object to a String, for instance to be sent over MQTT.

Returns:

the String representation of the JSON object, null in case of error.

serializeMinify

public java.lang.String serializeMinify()

Serializes the JSON object to a String, for instance, to be sent over MQTT. The result is minified (does not contain neither '\n', '\t'... ).

Returns:

the String representation of the JSON object, null in case of error.

parse

public static JSON parse(java.lang.String str)

Parses the given string (for example retrieved from an MQTT message) into a JSON object.

Parameters:

str - the string to parse

Returns:

the parsed JSON object, null in case of error.

parse

public static JSON parse(byte[] buf)

Parses the given buffer (for example retrieved from an MQTT message) into a JSON object.

Parameters:

buf - the buffer to parse

Returns:

the parsed JSON object, null in case of error.

addItem

public JSON addItem(java.lang.String s,
                    JSON js)

Add a child of type JSON (en existing node).

Parameters:

s - is the name of the new field

js - is the reference to the existing node

Returns:

the JSON item of the child, null in case of error.

addString

public JSON addString(java.lang.String s,
                      java.lang.String val)

Add a child of type String.

Parameters:

s - is the name of the new field

val - is the vlue of the number (String).

Returns:

the JSON item of the child, null in case of error.

addInt

public JSON addInt(java.lang.String s,
                   int val)

Add a child of type int.

Parameters:

s - is the name of the new field

val - is the vlue of the number (int).

Returns:

the JSON item of the child, null in case of error.

addBool

public JSON addBool(java.lang.String s,
                    boolean val)

Add a child of type boolean.

Parameters:

s - is the name of the new field

val - is the vlue of the number (boolean).

Returns:

the JSON item of the child, null in case of error.

addDouble

public JSON addDouble(java.lang.String s,
                      double val)

Add a child of type double.

Parameters:

s - is the name of the new field

val - is the vlue of the number (double).

Returns:

the JSON item of the child, null in case of error.

detachItemFromObject

public JSON detachItemFromObject(java.lang.String key)

Detach an item from JSON object

Parameters:

key - is object key

Returns:

the JSON item detach from the object, null in case of error.

detachItemFromArray

public JSON detachItemFromArray(int index)

Detach an item from JSON array

Parameters:

key - is index array

Returns:

the JSON item detach from the array, null in case of error.

deleteItemFromObject

public void deleteItemFromObject(java.lang.String key)

Delete an item in JSON object

Parameters:

key - is object key

deleteItemFromArray

public void deleteItemFromArray(int index)

Delete an item in JSON object

Parameters:

key - is object key

createDoubleArray

public static JSON createDoubleArray(double[] val)

Creates a JSON array from the given value.

Parameters:

val -

Returns:

createIntArray

public static JSON createIntArray(int[] val)

Creates a JSON array from the given value.

Parameters:

val -

Returns:

createStringArray

public static JSON createStringArray(java.lang.String[] val)

Creates a JSON array from the given value.

Parameters:

val -

Returns:

createBoolArray

public static JSON createBoolArray(boolean[] val)

Creates a JSON array from the given value.

Parameters:

val -

Returns:

getSize

public int getSize()

Checks if the item is an array and returns its size

Returns:

size of the array, -1 otherwise

getArrayItem

public JSON getArrayItem(int index)

Returns the array item as a new JSON object.

Parameters:

index -

Returns:

createArray

public static JSONArray createArray(int[] arr)

createArray

public static JSONArray createArray(double[] arr)

createArray

public static JSONArray createArray(boolean[] arr)

createArray

public static JSONArray createArray(JSON[] arr)

add

public JSONObject add(java.lang.String name,
                      java.lang.String value)

add

public JSONObject add(java.lang.String name,
                      int value)

add

public JSONObject add(java.lang.String name,
                      double value)

add

public JSONObject add(java.lang.String name,
                      boolean value)

add

public JSONObject add(java.lang.String name,
                      JSON value)