/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.flink.graph.drivers.input;
import org.apache.flink.api.java.ExecutionEnvironment;
import org.apache.flink.graph.Graph;
import org.apache.flink.graph.drivers.parameter.LongParameter;
import org.apache.flink.types.LongValue;
import org.apache.flink.types.NullValue;
import static org.apache.flink.api.common.ExecutionConfig.PARALLELISM_DEFAULT;
import static org.apache.flink.graph.generator.PathGraph.MINIMUM_VERTEX_COUNT;
/**
* Generate a {@link org.apache.flink.graph.generator.PathGraph}.
*/
public class PathGraph
extends GeneratedGraph<LongValue> {
private LongParameter vertexCount = new LongParameter(this, "vertex_count")
.setMinimumValue(MINIMUM_VERTEX_COUNT);
private LongParameter littleParallelism = new LongParameter(this, "little_parallelism")
.setDefaultValue(PARALLELISM_DEFAULT);
@Override
public String getName() {
return PathGraph.class.getSimpleName();
}
@Override
public String getIdentity() {
return getTypeName() + " " + getName() + " (" + vertexCount + ")";
}
@Override
protected long vertexCount() {
return vertexCount.getValue();
}
@Override
public Graph<LongValue, NullValue, NullValue> generate(ExecutionEnvironment env) {
return new org.apache.flink.graph.generator.PathGraph(env, vertexCount.getValue())
.setParallelism(littleParallelism.getValue().intValue())
.generate();
}
}