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Driver.java
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/*
* 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.orc.tools;
import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.DefaultParser;
import org.apache.commons.cli.Option;
import org.apache.commons.cli.Options;
import org.apache.commons.cli.ParseException;
import org.apache.hadoop.conf.Configuration;
import org.apache.orc.tools.convert.ConvertTool;
import org.apache.orc.tools.json.JsonSchemaFinder;
import java.util.Map;
import java.util.Properties;
/**
* Driver program for the java ORC utilities.
*/
public class Driver {
@SuppressWarnings("static-access")
static Options createOptions() {
Options result = new Options();
result.addOption(Option.builder("h")
.longOpt("help")
.desc("Print help message")
.build());
result.addOption(Option.builder("D")
.longOpt("define")
.desc("Set a configuration property")
.numberOfArgs(2)
.valueSeparator()
.build());
return result;
}
static class DriverOptions {
final CommandLine genericOptions;
final String command;
final String[] commandArgs;
DriverOptions(String[] args) throws ParseException {
genericOptions = new DefaultParser().parse(createOptions(), args, true);
String[] unprocessed = genericOptions.getArgs();
if (unprocessed.length == 0) {
command = null;
commandArgs = new String[0];
} else {
command = unprocessed[0];
if (genericOptions.hasOption('h')) {
commandArgs = new String[]{"-h"};
} else {
commandArgs = new String[unprocessed.length - 1];
System.arraycopy(unprocessed, 1, commandArgs, 0, commandArgs.length);
}
}
}
}
public static void main(String[] args) throws Exception {
System.setProperty("org.slf4j.simpleLogger.log.org.apache.hadoop", "error");
DriverOptions options = new DriverOptions(args);
if (options.command == null) {
System.err.println("ORC Java Tools");
System.err.println();
System.err.println("usage: java -jar orc-tools-*.jar [--help]" +
" [--define X=Y] <command> <args>");
System.err.println();
System.err.println("Commands:");
System.err.println(" check - check the index of the specified column");
System.err.println(" convert - convert CSV/JSON/ORC files to ORC");
System.err.println(" count - recursively find *.orc and print the number of rows");
System.err.println(" data - print the data from the ORC file");
System.err.println(" json-schema - scan JSON files to determine their schema");
System.err.println(" key - print information about the keys");
System.err.println(" merge - merge multiple ORC files into a single ORC file");
System.err.println(" meta - print the metadata about the ORC file");
System.err.println(" scan - scan the ORC file");
System.err.println(" sizes - list size on disk of each column");
System.err.println(" version - print the version of this ORC tool");
System.err.println();
System.err.println("To get more help, provide -h to the command");
System.exit(1);
}
Configuration conf = new Configuration();
if (Runtime.version().feature() > 21) {
conf.setIfUnset("fs.file.impl.disable.cache", "true");
}
Properties confSettings = options.genericOptions.getOptionProperties("D");
for(Map.Entry pair: confSettings.entrySet()) {
conf.set(pair.getKey().toString(), pair.getValue().toString());
}
switch (options.command) {
case "check":
CheckTool.main(conf, options.commandArgs);
break;
case "convert":
ConvertTool.main(conf, options.commandArgs);
break;
case "count":
RowCount.main(conf, options.commandArgs);
break;
case "data":
PrintData.main(conf, options.commandArgs);
break;
case "json-schema":
JsonSchemaFinder.main(conf, options.commandArgs);
break;
case "key":
KeyTool.main(conf, options.commandArgs);
break;
case "merge":
MergeFiles.main(conf, options.commandArgs);
break;
case "meta":
FileDump.main(conf, options.commandArgs);
break;
case "scan":
ScanData.main(conf, options.commandArgs);
break;
case "sizes":
ColumnSizes.main(conf, options.commandArgs);
break;
case "version":
PrintVersion.main(conf, options.commandArgs);
break;
default:
System.err.println("Unknown subcommand: " + options.command);
System.exit(1);
}
}
}