forked from eclipse-ditto/ditto
-
Notifications
You must be signed in to change notification settings - Fork 7
/
AbstractSingleActionStrategy.java
59 lines (50 loc) · 2.26 KB
/
AbstractSingleActionStrategy.java
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
/*
* Copyright (c) 2019 Contributors to the Eclipse Foundation
*
* See the NOTICE file(s) distributed with this work for additional
* information regarding copyright ownership.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License 2.0 which is available at
* http://www.eclipse.org/legal/epl-2.0
*
* SPDX-License-Identifier: EPL-2.0
*/
package org.eclipse.ditto.services.connectivity.messaging.persistence.strategies.commands;
import static org.eclipse.ditto.services.utils.persistentactors.results.ResultFactory.newMutationResult;
import java.util.Collections;
import java.util.List;
import javax.annotation.Nullable;
import org.eclipse.ditto.model.base.entity.metadata.Metadata;
import org.eclipse.ditto.model.connectivity.Connection;
import org.eclipse.ditto.services.connectivity.messaging.persistence.stages.ConnectionAction;
import org.eclipse.ditto.services.connectivity.messaging.persistence.stages.ConnectionState;
import org.eclipse.ditto.services.connectivity.messaging.persistence.stages.StagedCommand;
import org.eclipse.ditto.services.utils.persistentactors.results.Result;
import org.eclipse.ditto.signals.commands.connectivity.ConnectivityCommand;
import org.eclipse.ditto.signals.events.connectivity.ConnectivityEvent;
/**
* Abstract base class for single action strategies.
*
* @param <C> the type of the handled command
*/
abstract class AbstractSingleActionStrategy<C extends ConnectivityCommand<?>>
extends AbstractConnectivityCommandStrategy<C> {
AbstractSingleActionStrategy(final Class<C> theMatchingClass) {
super(theMatchingClass);
}
/**
* @return the single action to undertake
*/
abstract ConnectionAction getAction();
@Override
protected Result<ConnectivityEvent<?>> doApply(final Context<ConnectionState> context,
@Nullable final Connection connection,
final long nextRevision,
final C command,
@Nullable final Metadata metadata) {
final ConnectivityEvent<?> event = StagedCommand.dummyEvent();
final List<ConnectionAction> actions = Collections.singletonList(getAction());
return newMutationResult(StagedCommand.of(command, event, command, actions), event, command);
}
}