BySameId.java
/*
* Copyright © 2014 - 2021 Leipzig University (Database Research Group)
*
* 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.gradoop.flink.model.impl.functions.epgm;
import org.apache.flink.api.java.functions.FunctionAnnotation;
import org.gradoop.common.model.api.entities.Element;
import org.gradoop.common.model.impl.id.GradoopId;
import org.gradoop.flink.model.impl.functions.filters.CombinableFilter;
/**
* Filters elements if their identifier is equal to the given identifier.
*
* @param <EL> element type
*/
@FunctionAnnotation.ReadFields("id")
public class BySameId<EL extends Element> implements CombinableFilter<EL> {
/**
* id
*/
private final GradoopId id;
/**
* Creates a new filter instance
*
* @param id identifier
*/
public BySameId(GradoopId id) {
this.id = id;
}
@Override
public boolean filter(EL element) throws Exception {
return element.getId().equals(id);
}
}