com.hivemq.client.internal.mqtt.message.subscribe.mqtt3.Mqtt3SubscriptionViewBuilder Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of hivemq-mqtt-client Show documentation
Show all versions of hivemq-mqtt-client Show documentation
HiveMQ MQTT Client is an MQTT 5.0 and MQTT 3.1.1 compatible and feature-rich high-performance Java client library with different API flavours and backpressure support
/*
* Copyright 2018-present HiveMQ and the HiveMQ Community
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.hivemq.client.internal.mqtt.message.subscribe.mqtt3;
import com.hivemq.client.internal.mqtt.datatypes.MqttTopicFilterImpl;
import com.hivemq.client.internal.mqtt.datatypes.MqttTopicFilterImplBuilder;
import com.hivemq.client.internal.mqtt.message.subscribe.MqttSubscription;
import com.hivemq.client.internal.mqtt.util.MqttChecks;
import com.hivemq.client.internal.util.Checks;
import com.hivemq.client.mqtt.datatypes.MqttQos;
import com.hivemq.client.mqtt.datatypes.MqttTopicFilter;
import com.hivemq.client.mqtt.mqtt3.message.subscribe.Mqtt3Subscription;
import com.hivemq.client.mqtt.mqtt3.message.subscribe.Mqtt3SubscriptionBuilder;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import java.util.function.Function;
/**
* @author Silvio Giebl
*/
public abstract class Mqtt3SubscriptionViewBuilder> {
private @Nullable MqttTopicFilterImpl topicFilter;
private @NotNull MqttQos qos = Mqtt3SubscriptionView.DEFAULT_QOS;
Mqtt3SubscriptionViewBuilder() {}
Mqtt3SubscriptionViewBuilder(final @NotNull Mqtt3SubscriptionView subscription) {
final MqttSubscription delegate = subscription.getDelegate();
topicFilter = delegate.getTopicFilter();
qos = delegate.getQos();
}
abstract @NotNull B self();
public @NotNull B topicFilter(final @Nullable String topicFilter) {
this.topicFilter = MqttTopicFilterImpl.of(topicFilter);
return self();
}
public @NotNull B topicFilter(final @Nullable MqttTopicFilter topicFilter) {
this.topicFilter = MqttChecks.topicFilter(topicFilter);
return self();
}
public MqttTopicFilterImplBuilder.@NotNull Nested topicFilter() {
return new MqttTopicFilterImplBuilder.Nested<>(this::topicFilter);
}
public @NotNull B qos(final @Nullable MqttQos qos) {
this.qos = Checks.notNull(qos, "QoS");
return self();
}
public @NotNull Mqtt3SubscriptionView build() {
Checks.notNull(topicFilter, "Topic filter");
return Mqtt3SubscriptionView.of(topicFilter, qos);
}
public static class Default extends Mqtt3SubscriptionViewBuilder
implements Mqtt3SubscriptionBuilder.Complete {
public Default() {}
Default(final @NotNull Mqtt3SubscriptionView subscription) {
super(subscription);
}
@Override
@NotNull Default self() {
return this;
}
}
public static class Nested extends Mqtt3SubscriptionViewBuilder>
implements Mqtt3SubscriptionBuilder.Nested.Complete {
private final @NotNull Function parentConsumer;
public Nested(final @NotNull Function parentConsumer) {
this.parentConsumer = parentConsumer;
}
@Override
@NotNull Nested
self() {
return this;
}
@Override
public @NotNull P applySubscription() {
return parentConsumer.apply(build());
}
}
}