| /* |
| * 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.drill.exec.store.spss; |
| |
| import org.apache.drill.common.logical.StoragePluginConfig; |
| import org.apache.drill.common.types.TypeProtos; |
| import org.apache.drill.common.types.Types; |
| import org.apache.drill.exec.physical.impl.scan.file.FileScanFramework.FileReaderFactory; |
| import org.apache.drill.exec.physical.impl.scan.file.FileScanFramework.FileScanBuilder; |
| import org.apache.drill.exec.physical.impl.scan.file.FileScanFramework.FileSchemaNegotiator; |
| |
| import org.apache.drill.exec.physical.impl.scan.framework.ManagedReader; |
| import org.apache.drill.exec.server.DrillbitContext; |
| import org.apache.drill.exec.server.options.OptionSet; |
| import org.apache.drill.exec.store.dfs.easy.EasyFormatPlugin; |
| import org.apache.drill.exec.store.dfs.easy.EasySubScan; |
| import org.apache.drill.exec.store.dfs.easy.EasyFormatPlugin.ScanFrameworkVersion; |
| import org.apache.hadoop.conf.Configuration; |
| |
| |
| public class SpssFormatPlugin extends EasyFormatPlugin<SpssFormatConfig> { |
| |
| protected static final String DEFAULT_NAME = "spss"; |
| |
| private static class SpssReaderFactory extends FileReaderFactory { |
| |
| private final int maxRecords; |
| |
| public SpssReaderFactory(int maxRecords) { |
| this.maxRecords = maxRecords; |
| } |
| |
| @Override |
| public ManagedReader<? extends FileSchemaNegotiator> newReader() { |
| return new SpssBatchReader(maxRecords); |
| } |
| } |
| |
| public SpssFormatPlugin(String name, DrillbitContext context, |
| Configuration fsConf, StoragePluginConfig storageConfig, |
| SpssFormatConfig formatConfig) { |
| super(name, easyConfig(fsConf, formatConfig), context, storageConfig, formatConfig); |
| } |
| |
| private static EasyFormatConfig easyConfig(Configuration fsConf, SpssFormatConfig pluginConfig) { |
| return EasyFormatConfig.builder() |
| .readable(true) |
| .writable(false) |
| .blockSplittable(false) |
| .compressible(true) |
| .supportsProjectPushdown(true) |
| .extensions(pluginConfig.getExtensions()) |
| .fsConf(fsConf) |
| .defaultName(DEFAULT_NAME) |
| .scanVersion(ScanFrameworkVersion.EVF_V1) |
| .supportsLimitPushdown(true) |
| .build(); |
| } |
| |
| @Override |
| public ManagedReader<? extends FileSchemaNegotiator> newBatchReader(EasySubScan scan, OptionSet options) { |
| return new SpssBatchReader(scan.getMaxRecords()); |
| } |
| |
| @Override |
| protected FileScanBuilder frameworkBuilder(EasySubScan scan, OptionSet options) { |
| FileScanBuilder builder = new FileScanBuilder(); |
| builder.setReaderFactory(new SpssReaderFactory(scan.getMaxRecords())); |
| |
| initScanBuilder(builder, scan); |
| builder.nullType(Types.optional(TypeProtos.MinorType.VARCHAR)); |
| return builder; |
| } |
| } |