org.streampipes.manager.matching.output.RenameOutputSchemaGenerator Maven / Gradle / Ivy
/*
* Copyright 2018 FZI Forschungszentrum Informatik
*
* 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 org.streampipes.manager.matching.output;
import org.streampipes.model.SpDataStream;
import org.streampipes.model.output.KeepOutputStrategy;
import org.streampipes.model.output.OutputStrategy;
import org.streampipes.model.schema.EventProperty;
import org.streampipes.model.schema.EventSchema;
import org.streampipes.sdk.helpers.Tuple2;
import java.util.ArrayList;
import java.util.List;
public class RenameOutputSchemaGenerator extends OutputSchemaGenerator {
public static RenameOutputSchemaGenerator from(OutputStrategy strategy) {
return new RenameOutputSchemaGenerator((KeepOutputStrategy) strategy);
}
public RenameOutputSchemaGenerator(KeepOutputStrategy strategy) {
super(strategy);
}
@Override
public Tuple2 buildFromOneStream(SpDataStream stream) {
return makeTuple(stream.getEventSchema());
}
@Override
public Tuple2 buildFromTwoStreams(SpDataStream stream1,
SpDataStream stream2) {
EventSchema resultSchema = new EventSchema();
List properties = new ArrayList<>();
properties.addAll(stream1.getEventSchema().getEventProperties());
if (outputStrategy.isKeepBoth()) {
properties.addAll(new PropertyDuplicateRemover(properties,
stream2.getEventSchema().getEventProperties()).rename());
}
resultSchema.setEventProperties(properties);
return makeTuple(resultSchema);
}
}