opennlp.dl.AbstractDL Maven / Gradle / Ivy
/*
* 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.dl;
import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.stream.Stream;
import ai.onnxruntime.OrtEnvironment;
import ai.onnxruntime.OrtSession;
import opennlp.tools.tokenize.Tokenizer;
/**
* Base class for OpenNLP deep-learning classes using ONNX Runtime.
*/
public abstract class AbstractDL implements AutoCloseable {
public static final String INPUT_IDS = "input_ids";
public static final String ATTENTION_MASK = "attention_mask";
public static final String TOKEN_TYPE_IDS = "token_type_ids";
protected OrtEnvironment env;
protected OrtSession session;
protected Tokenizer tokenizer;
protected Map vocab;
/**
* Loads a vocabulary {@link File} from disk.
*
* @param vocabFile The vocabulary file.
* @return A map of vocabulary words to integer IDs.
* @throws IOException Thrown if the vocabulary file cannot be opened or read.
*/
public Map loadVocab(final File vocabFile) throws IOException {
final Map vocab = new HashMap<>();
final AtomicInteger counter = new AtomicInteger(0);
try (Stream lines = Files.lines(Path.of(vocabFile.getPath()))) {
lines.forEach(line -> vocab.put(line, counter.getAndIncrement()));
}
return vocab;
}
/**
* Closes this resource, relinquishing any underlying resources.
*
* @throws Exception If it failed to close.
*/
@Override
public void close() throws Exception {
if (session != null) {
session.close();
}
if (env != null) {
env.close();
}
}
}