| /* |
| * 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.spark; |
| |
| import org.apache.wayang.core.api.Configuration; |
| import org.apache.wayang.core.types.DataSetType; |
| import org.apache.wayang.spark.operators.SparkCollectionSource; |
| import org.apache.wayang.spark.operators.SparkTextFileSource; |
| |
| import java.util.ArrayList; |
| import java.util.function.Supplier; |
| |
| /** |
| * {@link SparkOperatorProfiler} for the {@link SparkTextFileSource}. |
| */ |
| public class SparkCollectionSourceProfiler extends SparkSourceProfiler { |
| |
| private final ArrayList<Object> collection; |
| |
| public <T extends Object> SparkCollectionSourceProfiler(Configuration configuration, |
| Supplier<T> dataQuantumGenerator, |
| DataSetType<T> outputType) { |
| this(new ArrayList<>(), configuration, dataQuantumGenerator, outputType); |
| } |
| |
| private <T extends Object> SparkCollectionSourceProfiler(ArrayList<T> collection, |
| Configuration configuration, |
| Supplier<T> dataQuantumGenerator, |
| DataSetType<T> outputType) { |
| super(() -> new SparkCollectionSource<>(collection, outputType), configuration, dataQuantumGenerator); |
| this.collection = (ArrayList<Object>) collection; |
| } |
| |
| @Override |
| protected void prepareInput(int inputIndex, long inputCardinality) { |
| assert inputIndex == 0; |
| assert inputCardinality <= Integer.MAX_VALUE; |
| |
| this.collection.clear(); |
| this.collection.ensureCapacity((int) inputCardinality); |
| final Supplier<?> supplier = this.dataQuantumGenerators.get(0); |
| for (long i = 0; i < inputCardinality; i++) { |
| this.collection.add(supplier.get()); |
| } |
| } |
| |
| @Override |
| public void cleanUp() { |
| super.cleanUp(); |
| |
| this.collection.clear(); |
| this.collection.trimToSize(); |
| } |
| } |