/**
* Copyright (C) 2012 cogroo <cogroo@cogroo.org>
*
* Licensed 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.cogroo.formats.ad;
import java.io.File;
import java.io.IOException;
import java.nio.charset.Charset;
import org.cogroo.tools.featurizer.FeatureSample;
import opennlp.tools.cmdline.ArgumentParser;
import opennlp.tools.cmdline.ArgumentParser.OptionalParameter;
import opennlp.tools.cmdline.ArgumentParser.ParameterDescription;
import opennlp.tools.cmdline.CmdLineUtil;
import opennlp.tools.cmdline.StreamFactoryRegistry;
import opennlp.tools.formats.LanguageSampleStreamFactory;
import opennlp.tools.util.InputStreamFactory;
import opennlp.tools.util.ObjectStream;
import opennlp.tools.util.PlainTextByLineStream;
/**
* A Factory to create a Arvores Deitadas FeatureSampe from the command line
* utility.
* <p>
* <b>Note:</b> Do not use this class, internal use only!
*/
public class ADFeatureSampleStreamFactory extends
LanguageSampleStreamFactory<FeatureSample> {
interface Parameters {
// all have to be repeated, because encoding is not optional,
// according to the check if (encoding == null) { below (now removed)
@ParameterDescription(valueName = "charsetName", description = "encoding for reading and writing text, if absent the system default is used.")
Charset getEncoding();
@ParameterDescription(valueName = "sampleData", description = "data to be used, usually a file name.")
File getData();
@ParameterDescription(valueName = "language", description = "language which is being processed.")
String getLang();
@ParameterDescription(valueName = "start", description = "index of first sentence")
@OptionalParameter
Integer getStart();
@ParameterDescription(valueName = "end", description = "index of last sentence")
@OptionalParameter
Integer getEnd();
@ParameterDescription(valueName = "expandME", description = "expand multiword expressions.")
@OptionalParameter(defaultValue = "false")
Boolean getExpandME();
}
public static void registerFactory() {
StreamFactoryRegistry.registerFactory(FeatureSample.class, "ad",
new ADFeatureSampleStreamFactory(Parameters.class));
}
protected <P> ADFeatureSampleStreamFactory(Class<P> params) {
super(params);
}
public ObjectStream<FeatureSample> create(String[] args) {
Parameters params = ArgumentParser.parse(args, Parameters.class);
language = params.getLang();
InputStreamFactory sampleDataIn = CmdLineUtil.createInputStreamFactory(params.getData());
ObjectStream<String> lineStream = null;
try {
lineStream = new PlainTextByLineStream(
sampleDataIn, params.getEncoding());
} catch (IOException e) {
CmdLineUtil.handleCreateObjectStreamError(e);
}
ADFeaturizerSampleStream sentenceStream = new ADFeaturizerSampleStream(
lineStream, params.getExpandME());
return sentenceStream;
}
}