/
ImmutableJsonNull.java
executable file
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/
ImmutableJsonNull.java
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/*
* Copyright (c) 2017-2018 Bosch Software Innovations GmbH.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/org/documents/epl-2.0/index.php
*
* SPDX-License-Identifier: EPL-2.0
*/
package org.eclipse.ditto.json;
import javax.annotation.Nullable;
import javax.annotation.concurrent.Immutable;
/**
* An immutable JsonValue that wraps JSON NULL. Calling asObject() or asArray() returns a JSON NULL representation as an
* instance of JsonObject, respectively JsonArray. This is different than the JSON literals because JSON NULL is a valid
* value for a JSON field were expected is an JSON object or JSON array.
*/
@Immutable
final class ImmutableJsonNull extends AbstractMinimalJsonValueWrapper implements JsonNull {
/**
* Constructs a new {@code AbstractMinimalJsonValueWrapper} object.
*/
private ImmutableJsonNull() {
super(com.eclipsesource.json.Json.NULL);
}
/**
* Returns a new instance of {@code ImmutableJsonNull}.
*
* @return a new ImmutableJsonNull.
* @throws NullPointerException if {@code minimalJsonValue} is {@code null}.
*/
public static JsonValue newInstance() {
return new ImmutableJsonNull();
}
@Override
public boolean isObject() {
return true;
}
@Override
public boolean isArray() {
return true;
}
@Override
public JsonObject asObject() {
return JsonFactory.nullObject();
}
@Override
public JsonArray asArray() {
return JsonFactory.nullArray();
}
@Override
public boolean equals(@Nullable final Object o) {
return this == o || null != o && (super.equals(o) || o instanceof JsonNull);
}
@Override
public int hashCode() {
return JsonNull.class.hashCode();
}
}