| /* |
| * 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.wayang.profiler.java; |
| |
| import org.apache.wayang.core.types.DataSetType; |
| import org.apache.wayang.java.operators.JavaCollectionSource; |
| |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.function.Supplier; |
| |
| /** |
| * {@link OperatorProfiler} for {@link JavaCollectionSource}s. |
| */ |
| public class JavaCollectionSourceProfiler extends SourceProfiler { |
| |
| private Collection<Object> sourceCollection; |
| |
| public JavaCollectionSourceProfiler(Supplier<?> dataQuantumGenerator) { |
| super(null, dataQuantumGenerator); |
| this.operatorGenerator = this::createOperator; // We can only pass the method reference here. |
| } |
| |
| private JavaCollectionSource createOperator() { |
| final Object exampleDataQuantum = this.dataQuantumGenerators.get(0).get(); |
| return new JavaCollectionSource(this.sourceCollection, DataSetType.createDefault(exampleDataQuantum.getClass())); |
| } |
| |
| |
| @Override |
| void setUpSourceData(long cardinality) throws Exception { |
| // Create the #sourceCollection. |
| final Supplier<?> dataQuantumGenerator = this.dataQuantumGenerators.get(0); |
| this.sourceCollection = new ArrayList<>((int) cardinality); |
| for (int i = 0; i < cardinality; i++) { |
| this.sourceCollection.add(dataQuantumGenerator.get()); |
| } |
| } |
| |
| } |