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https://issues.apache.org/jira/browse/DRILL-7177?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16959669#comment-16959669
]
ASF GitHub Bot commented on DRILL-7177:
---------------------------------------
arina-ielchiieva commented on pull request #1749: DRILL-7177: Format Plugin for
Excel Files
URL: https://github.com/apache/drill/pull/1749#discussion_r339008989
##########
File path:
contrib/format-excel/src/main/java/org/apache/drill/exec/store/excel/ExcelFormatPlugin.java
##########
@@ -0,0 +1,141 @@
+/*
+ * 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.excel;
+
+import org.apache.drill.common.exceptions.ExecutionSetupException;
+import org.apache.drill.common.exceptions.UserException;
+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.proto.UserBitShared;
+import org.apache.drill.exec.server.DrillbitContext;
+import org.apache.drill.exec.server.options.OptionManager;
+import org.apache.drill.exec.store.dfs.easy.EasyFormatPlugin;
+import org.apache.drill.exec.store.dfs.easy.EasySubScan;
+import org.apache.hadoop.conf.Configuration;
+import org.apache.drill.exec.store.excel.ExcelBatchReader.ExcelReaderConfig;
+import org.slf4j.Logger;
+
+
+public class ExcelFormatPlugin extends EasyFormatPlugin<ExcelFormatConfig> {
+
+ protected static final String DEFAULT_NAME = "excel";
+ private static final Logger logger =
org.slf4j.LoggerFactory.getLogger(ExcelFormatPlugin.class);
+
+ private static class ExcelReaderFactory extends FileReaderFactory {
+ private final ExcelBatchReader.ExcelReaderConfig readerConfig;
+
+ public ExcelReaderFactory(ExcelReaderConfig config) {
+ readerConfig = config;
+ }
+
+ @Override
+ public ManagedReader<? extends FileSchemaNegotiator> newReader() {
+ return new ExcelBatchReader(readerConfig);
+ }
+ }
+
+ public ExcelFormatPlugin(String name, DrillbitContext context,
+ Configuration fsConf, StoragePluginConfig
storageConfig,
+ ExcelFormatConfig formatConfig) {
+ super(name, easyConfig(fsConf, formatConfig), context, storageConfig,
formatConfig);
+ }
+
+ private static EasyFormatConfig easyConfig(Configuration fsConf,
ExcelFormatConfig pluginConfig) {
+ EasyFormatConfig config = new EasyFormatConfig();
+ config.readable = true;
+ config.writable = false;
+ config.blockSplittable = false;
+ config.compressible = true;
+ config.supportsProjectPushdown = true;
+ config.extensions = pluginConfig.getExtensions();
+ config.fsConf = fsConf;
+ config.defaultName = DEFAULT_NAME;
+ config.readerOperatorType =
UserBitShared.CoreOperatorType.EXCEL_SUB_SCAN_VALUE;
+ config.useEnhancedScan = true;
+ return config;
+ }
+
+ @Override
+ public ManagedReader<? extends FileSchemaNegotiator> newBatchReader(
+ EasySubScan scan, OptionManager options) throws ExecutionSetupException {
+ return new ExcelBatchReader(formatConfig.getReaderConfig(this));
+ }
+
+ @Override
+ protected FileScanBuilder frameworkBuilder(OptionManager options,
EasySubScan scan) throws ExecutionSetupException {
+ FileScanBuilder builder = new FileScanBuilder();
+ ExcelReaderConfig readerConfig = new ExcelReaderConfig(this);
+
+ verifyConfigOptions(readerConfig);
+ builder.setReaderFactory(new ExcelReaderFactory(readerConfig));
+
+ initScanBuilder(builder, scan);
+ builder.setNullType(Types.optional(TypeProtos.MinorType.VARCHAR));
+ return builder;
+ }
+
+ /**
+ * This function verifies that the user entered valid user configuration
options. Specifically it verifies that:
+ * <ul>
+ * <li>the lastColumn is greater than the first column</li>
+ * <li>The lastColumn is not zero</li>
+ * <li>firstColumn is greater than zero</li>
+ * <li>lastColumn is greater than zero</li>
+ * <li>The headerRow index is less than the lastRow index</li>
+ * </ul>
+ *
+ * @param readerConfig
Review comment:
please add description to avoid warning in the IDE.
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> Format Plugin for Excel Files
> -----------------------------
>
> Key: DRILL-7177
> URL: https://issues.apache.org/jira/browse/DRILL-7177
> Project: Apache Drill
> Issue Type: Improvement
> Affects Versions: 1.17.0
> Reporter: Charles Givre
> Assignee: Charles Givre
> Priority: Major
> Labels: doc-impacting
> Fix For: 1.17.0
>
>
> This pull request adds the functionality which enables Drill to query
> Microsoft Excel files.
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