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CreateConnection.java
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CreateConnection.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.connectivity.model.signals.commands.modify;
import static org.eclipse.ditto.base.model.common.ConditionChecker.checkNotNull;
import java.util.Objects;
import java.util.function.Predicate;
import javax.annotation.Nullable;
import javax.annotation.concurrent.Immutable;
import org.eclipse.ditto.base.model.headers.DittoHeaders;
import org.eclipse.ditto.base.model.json.FieldType;
import org.eclipse.ditto.base.model.json.JsonParsableCommand;
import org.eclipse.ditto.base.model.json.JsonSchemaVersion;
import org.eclipse.ditto.base.model.signals.commands.AbstractCommand;
import org.eclipse.ditto.base.model.signals.commands.CommandJsonDeserializer;
import org.eclipse.ditto.connectivity.model.Connection;
import org.eclipse.ditto.connectivity.model.ConnectionId;
import org.eclipse.ditto.connectivity.model.ConnectivityModelFactory;
import org.eclipse.ditto.connectivity.model.signals.commands.ConnectivityCommand;
import org.eclipse.ditto.json.JsonFactory;
import org.eclipse.ditto.json.JsonField;
import org.eclipse.ditto.json.JsonFieldDefinition;
import org.eclipse.ditto.json.JsonObject;
import org.eclipse.ditto.json.JsonObjectBuilder;
/**
* Command which creates a {@link org.eclipse.ditto.connectivity.model.Connection}.
*/
@Immutable
@JsonParsableCommand(typePrefix = ConnectivityCommand.TYPE_PREFIX, name = CreateConnection.NAME)
public final class CreateConnection extends AbstractCommand<CreateConnection>
implements ConnectivityModifyCommand<CreateConnection> {
/**
* Name of this command.
*/
public static final String NAME = "createConnection";
/**
* Type of this command.
*/
public static final String TYPE = TYPE_PREFIX + NAME;
static final JsonFieldDefinition<JsonObject> JSON_CONNECTION =
JsonFactory.newJsonObjectFieldDefinition("connection", FieldType.REGULAR,
JsonSchemaVersion.V_2);
private final Connection connection;
private CreateConnection(final Connection connection, final DittoHeaders dittoHeaders) {
super(TYPE, dittoHeaders);
this.connection = connection;
}
/**
* Returns a new instance of {@code CreateConnection}.
*
* @param connection the connection to be created.
* @param dittoHeaders the headers of the request.
* @return a new CreateConnection command.
* @throws NullPointerException if any argument is {@code null}.
*/
public static CreateConnection of(final Connection connection, final DittoHeaders dittoHeaders) {
checkNotNull(connection, "Connection");
return new CreateConnection(connection, dittoHeaders);
}
/**
* Creates a new {@code CreateConnection} from a JSON string.
*
* @param jsonString the JSON string of which the command is to be created.
* @param dittoHeaders the headers of the command.
* @return the command.
* @throws NullPointerException if {@code jsonString} is {@code null}.
* @throws IllegalArgumentException if {@code jsonString} is empty.
* @throws org.eclipse.ditto.json.JsonParseException if the passed in {@code jsonString} was not in the expected
* format.
*/
public static CreateConnection fromJson(final String jsonString, final DittoHeaders dittoHeaders) {
return fromJson(JsonFactory.newObject(jsonString), dittoHeaders);
}
/**
* Creates a new {@code CreateConnection} from a JSON object.
*
* @param jsonObject the JSON object of which the command is to be created.
* @param dittoHeaders the headers of the command.
* @return the command.
* @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
* format.
*/
public static CreateConnection fromJson(final JsonObject jsonObject, final DittoHeaders dittoHeaders) {
return new CommandJsonDeserializer<CreateConnection>(TYPE, jsonObject).deserialize(() -> {
final JsonObject jsonConnection = jsonObject.getValueOrThrow(JSON_CONNECTION);
final Connection readConnection = ConnectivityModelFactory.connectionFromJson(jsonConnection);
return of(readConnection, dittoHeaders);
});
}
/**
* @return the {@code Connection} to be created.
*/
public Connection getConnection() {
return connection;
}
@Override
protected void appendPayload(final JsonObjectBuilder jsonObjectBuilder, final JsonSchemaVersion schemaVersion,
final Predicate<JsonField> thePredicate) {
final Predicate<JsonField> predicate = schemaVersion.and(thePredicate);
jsonObjectBuilder.set(JSON_CONNECTION, connection.toJson(schemaVersion, thePredicate), predicate);
}
@Override
public ConnectionId getEntityId() {
return connection.getId();
}
@Override
public Category getCategory() {
return Category.CREATE;
}
@Override
public CreateConnection setDittoHeaders(final DittoHeaders dittoHeaders) {
return of(connection, dittoHeaders);
}
@Override
protected boolean canEqual(@Nullable final Object other) {
return (other instanceof CreateConnection);
}
@Override
public boolean equals(@Nullable final Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
if (!super.equals(o)) {
return false;
}
final CreateConnection that = (CreateConnection) o;
return Objects.equals(connection, that.connection);
}
@Override
public int hashCode() {
return Objects.hash(super.hashCode(), connection);
}
@Override
public String toString() {
return getClass().getSimpleName() + " [" +
super.toString() +
", connection=" + connection +
"]";
}
}