org.streampipes.manager.matching.output.AppendOutputSchemaGenerator 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 java.util.ArrayList;
import java.util.List;
import org.streampipes.model.schema.EventProperty;
import org.streampipes.model.schema.EventSchema;
import org.streampipes.model.SpDataStream;
import org.streampipes.model.output.AppendOutputStrategy;
public class AppendOutputSchemaGenerator implements OutputSchemaGenerator {
private List appendProperties;
private List properties;
private List renamedProperties;
public AppendOutputSchemaGenerator(List appendProperties) {
this.appendProperties = appendProperties;
this.properties = new ArrayList<>();
this.renamedProperties = new ArrayList<>();
}
@Override
public EventSchema buildFromOneStream(SpDataStream stream) {
properties.addAll(stream.getEventSchema().getEventProperties());
properties.addAll(renameDuplicates(stream.getEventSchema().getEventProperties()));
return new EventSchema(properties);
}
@Override
public EventSchema buildFromTwoStreams(SpDataStream stream1,
SpDataStream stream2) {
properties.addAll(renameDuplicates(stream1.getEventSchema().getEventProperties()));
properties.addAll(renameDuplicates(stream2.getEventSchema().getEventProperties()));
return new EventSchema(properties);
}
private List renameDuplicates(List oldProperties)
{
List renamed = new PropertyDuplicateRemover(oldProperties, appendProperties).rename();
this.renamedProperties.addAll(renamed);
return renamed;
}
@Override
public AppendOutputStrategy getModifiedOutputStrategy(
AppendOutputStrategy strategy) {
strategy.setEventProperties(renamedProperties);
return strategy;
}
}