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ThingMergeSignalMapper.java
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ThingMergeSignalMapper.java
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/*
* Copyright (c) 2021 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.protocol.mapper;
import org.eclipse.ditto.base.model.headers.DittoHeaders;
import org.eclipse.ditto.protocol.PayloadBuilder;
import org.eclipse.ditto.protocol.ProtocolFactory;
import org.eclipse.ditto.protocol.TopicPath;
import org.eclipse.ditto.protocol.TopicPathBuilder;
import org.eclipse.ditto.things.model.signals.commands.modify.MergeThing;
final class ThingMergeSignalMapper extends AbstractModifySignalMapper<MergeThing> {
@Override
void enhancePayloadBuilder(final MergeThing command, final PayloadBuilder payloadBuilder) {
payloadBuilder.withValue(command.getEntity().orElseGet(command::getValue));
}
@Override
TopicPathBuilder getTopicPathBuilder(final MergeThing command) {
return ProtocolFactory.newTopicPathBuilder(command.getEntityId()).things();
}
private static final TopicPath.Action[] SUPPORTED_ACTIONS = {TopicPath.Action.MERGE};
@Override
TopicPath.Action[] getSupportedActions() {
return SUPPORTED_ACTIONS;
}
@Override
DittoHeaders enhanceHeaders(final MergeThing signal) {
return ProtocolFactory.newHeadersWithJsonMergePatchContentType(signal.getDittoHeaders());
}
}