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PolicyDeleted.java
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PolicyDeleted.java
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/*
* Copyright (c) 2017 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.policies.model.signals.events;
import static org.eclipse.ditto.base.model.common.ConditionChecker.checkNotNull;
import java.time.Instant;
import java.util.function.Predicate;
import javax.annotation.Nullable;
import javax.annotation.concurrent.Immutable;
import org.eclipse.ditto.base.model.entity.metadata.Metadata;
import org.eclipse.ditto.base.model.headers.DittoHeaders;
import org.eclipse.ditto.base.model.json.JsonParsableEvent;
import org.eclipse.ditto.base.model.json.JsonSchemaVersion;
import org.eclipse.ditto.base.model.signals.events.EventJsonDeserializer;
import org.eclipse.ditto.json.JsonFactory;
import org.eclipse.ditto.json.JsonField;
import org.eclipse.ditto.json.JsonObject;
import org.eclipse.ditto.json.JsonObjectBuilder;
import org.eclipse.ditto.json.JsonPointer;
import org.eclipse.ditto.policies.model.PolicyId;
/**
* This event is emitted after a {@link org.eclipse.ditto.policies.model.Policy} was deleted.
*/
@Immutable
@JsonParsableEvent(name = PolicyDeleted.NAME, typePrefix= PolicyEvent.TYPE_PREFIX)
public final class PolicyDeleted extends AbstractPolicyEvent<PolicyDeleted> implements PolicyEvent<PolicyDeleted> {
/**
* Name of this event.
*/
public static final String NAME = "policyDeleted";
/**
* Type of this event.
*/
public static final String TYPE = TYPE_PREFIX + NAME;
private PolicyDeleted(final PolicyId policyId,
final long revision,
@Nullable final Instant timestamp,
final DittoHeaders dittoHeaders,
@Nullable final Metadata metadata) {
super(TYPE, checkNotNull(policyId, "Policy identifier"), revision, timestamp, dittoHeaders, metadata);
}
/**
* Constructs a new {@code PolicyDeleted} object.
*
* @param policyId the ID of the deleted {@link org.eclipse.ditto.policies.model.Policy}.
* @param revision the revision of the Policy.
* @param timestamp the timestamp of this event.
* @param dittoHeaders the headers of the command which was the cause of this event.
* @param metadata the metadata to apply for the event.
* @return a event object indicating the deletion of the Policy
* @throws NullPointerException if any argument but {@code timestamp} is {@code null}.
*/
public static PolicyDeleted of(final PolicyId policyId,
final long revision,
@Nullable final Instant timestamp,
final DittoHeaders dittoHeaders,
@Nullable final Metadata metadata) {
return new PolicyDeleted(policyId, revision, timestamp, dittoHeaders, metadata);
}
/**
* Creates a new {@code PolicyDeleted} from a JSON string.
*
* @param jsonString the JSON string from which a new PolicyDeleted instance is to be created.
* @param dittoHeaders the headers of the command which was the cause of this event.
* @return the {@code PolicyDeleted} which was created from the given JSON string.
* @throws NullPointerException if {@code jsonString} is {@code null}.
* @throws org.eclipse.ditto.json.JsonParseException if the passed in {@code jsonString} was not in the expected
* 'PolicyDeleted' format.
*/
public static PolicyDeleted fromJson(final String jsonString, final DittoHeaders dittoHeaders) {
return fromJson(JsonFactory.newObject(jsonString), dittoHeaders);
}
/**
* Creates a new {@code PolicyDeleted} from a JSON object.
*
* @param jsonObject the JSON object from which a new PolicyDeleted instance is to be created.
* @param dittoHeaders the headers of the command which was the cause of this event.
* @return the {@code PolicyDeleted} which was created from the given JSON object.
* @throws NullPointerException if {@code jsonObject} is {@code null}.
* @throws org.eclipse.ditto.json.JsonParseException if the passed in {@code jsonObject} was not in the expected
* 'PolicyDeleted' format.
*/
public static PolicyDeleted fromJson(final JsonObject jsonObject, final DittoHeaders dittoHeaders) {
return new EventJsonDeserializer<PolicyDeleted>(TYPE, jsonObject)
.deserialize((revision, timestamp, metadata) -> {
final PolicyId policyId = PolicyId.of(jsonObject.getValueOrThrow(PolicyEvent.JsonFields.POLICY_ID));
return of(policyId, revision, timestamp, dittoHeaders, metadata);
});
}
@Override
public JsonPointer getResourcePath() {
return JsonPointer.empty();
}
@Override
public PolicyDeleted setRevision(final long revision) {
return of(getPolicyEntityId(), revision, getTimestamp().orElse(null), getDittoHeaders(),
getMetadata().orElse(null));
}
@Override
public PolicyDeleted setDittoHeaders(final DittoHeaders dittoHeaders) {
return of(getPolicyEntityId(), getRevision(), getTimestamp().orElse(null), dittoHeaders,
getMetadata().orElse(null));
}
@Override
protected void appendPayload(final JsonObjectBuilder jsonObjectBuilder, final JsonSchemaVersion schemaVersion,
final Predicate<JsonField> predicate) {
// no-op
}
@Override
protected boolean canEqual(@Nullable final Object other) {
return other instanceof PolicyDeleted;
}
@Override
public String toString() {
return getClass().getSimpleName() + " [" + super.toString() + "]";
}
}