/**
* 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.mahout.fpm.pfpgrowth;
import java.io.IOException;
import org.apache.commons.cli2.CommandLine;
import org.apache.commons.cli2.Group;
import org.apache.commons.cli2.Option;
import org.apache.commons.cli2.OptionException;
import org.apache.commons.cli2.builder.ArgumentBuilder;
import org.apache.commons.cli2.builder.DefaultOptionBuilder;
import org.apache.commons.cli2.builder.GroupBuilder;
import org.apache.commons.cli2.commandline.Parser;
import org.apache.mahout.common.CommandLineUtil;
import org.apache.mahout.common.Parameters;
import org.apache.mahout.common.commandline.DefaultOptionCreator;
import org.apache.mahout.fpm.pfpgrowth.dataset.KeyBasedStringTupleGrouper;
public final class DeliciousTagsExample {
private DeliciousTagsExample() { }
public static void main(String[] args) throws IOException, InterruptedException, ClassNotFoundException {
DefaultOptionBuilder obuilder = new DefaultOptionBuilder();
ArgumentBuilder abuilder = new ArgumentBuilder();
GroupBuilder gbuilder = new GroupBuilder();
Option inputDirOpt = DefaultOptionCreator.inputOption().create();
Option outputOpt = DefaultOptionCreator.outputOption().create();
Option helpOpt = DefaultOptionCreator.helpOption();
Option recordSplitterOpt = obuilder.withLongName("splitterPattern").withArgument(
abuilder.withName("splitterPattern").withMinimum(1).withMaximum(1).create()).withDescription(
"Regular Expression pattern used to split given line into fields."
+ " Default value splits comma or tab separated fields."
+ " Default Value: \"[ ,\\t]*\\t[ ,\\t]*\" ").withShortName("regex").create();
Option encodingOpt = obuilder.withLongName("encoding").withArgument(
abuilder.withName("encoding").withMinimum(1).withMaximum(1).create()).withDescription(
"(Optional) The file encoding. Default value: UTF-8").withShortName("e").create();
Group group = gbuilder.withName("Options").withOption(inputDirOpt).withOption(outputOpt).withOption(
helpOpt).withOption(recordSplitterOpt).withOption(encodingOpt).create();
try {
Parser parser = new Parser();
parser.setGroup(group);
CommandLine cmdLine = parser.parse(args);
if (cmdLine.hasOption(helpOpt)) {
CommandLineUtil.printHelp(group);
return;
}
Parameters params = new Parameters();
if (cmdLine.hasOption(recordSplitterOpt)) {
params.set("splitPattern", (String) cmdLine.getValue(recordSplitterOpt));
}
String encoding = "UTF-8";
if (cmdLine.hasOption(encodingOpt)) {
encoding = (String) cmdLine.getValue(encodingOpt);
}
params.set("encoding", encoding);
String inputDir = (String) cmdLine.getValue(inputDirOpt);
String outputDir = (String) cmdLine.getValue(outputOpt);
params.set("input", inputDir);
params.set("output", outputDir);
params.set("groupingFieldCount", "2");
params.set("gfield0", "1");
params.set("gfield1", "2");
params.set("selectedFieldCount", "1");
params.set("field0", "3");
params.set("maxTransactionLength", "100");
KeyBasedStringTupleGrouper.startJob(params);
} catch (OptionException ex) {
CommandLineUtil.printHelp(group);
}
}
}