Package org.eclipse.hono.util

Class JsonHelper

java.lang.Object

org.eclipse.hono.util.JsonHelper

public final class JsonHelper
extends Object

A helper class for working with JsonObjects.

Method Summary

Modifier and Type	Method	Description
static <T> T	getValue(io.vertx.core.json.JsonObject jsonObject, String name, Class<T> clazz, T defaultValue)	Gets a value from the given JSON object.

Methods inherited from class java.lang.Object

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

Method Details

getValue

public static <T> T getValue(io.vertx.core.json.JsonObject jsonObject,
 String name,
 Class<T> clazz,
 T defaultValue)

Gets a value from the given JSON object.

Type Parameters:

T - The type of the value.

Parameters:

jsonObject - The JSON object to get the value from.

name - The key to return the value for.

defaultValue - A default value to return if the value is null or is of an unexpected type.

clazz - The target type.

Returns:

The value or the given default value if the value is not set or is of an unexpected type.

Throws:

NullPointerException - if any of the parameters except defaultValue are null.