test.de.iip_ecosphere.platform.transport

Class JsonUtils

java.lang.Object

test.de.iip_ecosphere.platform.transport.JsonUtils

public class JsonUtils
extends Object

Utility methods for JSON serialization.

Author:

Holger Eichelberger, SSE

Constructor Summary

Constructors

Constructor and Description
JsonUtils()

Method Summary

Modifier and Type	Method and Description
static double	readDouble(org.json.simple.JSONObject obj, String field, double dflt) Reads a double field from a JSON object.
static int	readInteger(org.json.simple.JSONObject obj, String field, int dflt) Reads an integer field from a JSON object.
static String	readString(org.json.simple.JSONObject obj, String field) Reads a string field from a JSON object.

Methods inherited from class java.lang.Object

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

Constructor Detail

JsonUtils

public JsonUtils()

Method Detail

readString

public static String readString(org.json.simple.JSONObject obj,
                                String field)

Reads a string field from a JSON object.

Parameters:

obj - the object to read from

field - the field to read from

Returns:

the string value or null

readDouble

public static double readDouble(org.json.simple.JSONObject obj,
                                String field,
                                double dflt)
                         throws IOException

Reads a double field from a JSON object.

Parameters:

obj - the object to read from

field - the field to read from

dflt - the default value

Returns:

the double value, if not accessible dflt

Throws:

IOException - if parsing the double value fails

readInteger

public static int readInteger(org.json.simple.JSONObject obj,
                              String field,
                              int dflt)
                       throws IOException

Reads an integer field from a JSON object.

Parameters:

obj - the object to read from

field - the field to read from

dflt - the default value

Returns:

the double value, if not accessible dflt

Throws:

IOException - if parsing the double value fails