/*
* 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 opennlp.tools.cmdline.parser;
import java.io.File;
import java.io.IOException;
import opennlp.tools.cmdline.AbstractTypedParamTool;
import opennlp.tools.cmdline.ArgumentParser;
import opennlp.tools.cmdline.CmdLineUtil;
import opennlp.tools.cmdline.ObjectStreamFactory;
import opennlp.tools.cmdline.TerminateToolException;
import opennlp.tools.cmdline.params.TrainingToolParams;
import opennlp.tools.parser.Parse;
import opennlp.tools.parser.ParserModel;
import opennlp.tools.util.ObjectStream;
/**
* Abstract base class for tools which update the parser model.
*/
abstract class ModelUpdaterTool
extends AbstractTypedParamTool<Parse, ModelUpdaterTool.ModelUpdaterParams> {
interface ModelUpdaterParams extends TrainingToolParams {
}
protected ModelUpdaterTool() {
super(Parse.class, ModelUpdaterParams.class);
}
protected abstract ParserModel trainAndUpdate(ParserModel originalModel,
ObjectStream<Parse> parseSamples, ModelUpdaterParams parameters)
throws IOException;
public final void run(String format, String[] args) {
ModelUpdaterParams params = validateAndParseParams(
ArgumentParser.filter(args, ModelUpdaterParams.class), ModelUpdaterParams.class);
// Load model to be updated
File modelFile = params.getModel();
ParserModel originalParserModel = new ParserModelLoader().load(modelFile);
ObjectStreamFactory<Parse> factory = getStreamFactory(format);
String[] fargs = ArgumentParser.filter(args, factory.getParameters());
validateFactoryArgs(factory, fargs);
ObjectStream<Parse> sampleStream = factory.create(fargs);
ParserModel updatedParserModel;
try {
updatedParserModel = trainAndUpdate(originalParserModel, sampleStream, params);
}
catch (IOException e) {
throw new TerminateToolException(-1, "IO error while reading training data or indexing data: "
+ e.getMessage(), e);
}
finally {
try {
sampleStream.close();
} catch (IOException e) {
// sorry that this can fail
}
}
CmdLineUtil.writeModel("parser", modelFile, updatedParserModel);
}
}