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Java example source code file (LabelAwareUimaSentenceIterator.java)

This example Java source code file (LabelAwareUimaSentenceIterator.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

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Java - Java tags/keywords

analysisengine, exception, field, file, labelawaresentenceiterator, labelawareuimasentenceiterator, list, none, nullpointerexception, override, reflection, resourceinitializationexception, runtimeexception, string, uimaresource, util

The LabelAwareUimaSentenceIterator.java Java example source code

 *  * Copyright 2015 Skymind,Inc.
 *  *
 *  *    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.deeplearning4j.text.sentenceiterator.labelaware;

import org.apache.uima.analysis_engine.AnalysisEngine;
import org.apache.uima.fit.factory.AnalysisEngineFactory;
import org.apache.uima.resource.ResourceInitializationException;
import org.deeplearning4j.text.annotator.SentenceAnnotator;
import org.deeplearning4j.text.annotator.TokenizerAnnotator;
import org.deeplearning4j.text.sentenceiterator.SentenceIterator;
import org.deeplearning4j.text.sentenceiterator.UimaSentenceIterator;
import org.deeplearning4j.text.sentenceiterator.SentencePreProcessor;
import org.deeplearning4j.text.uima.UimaResource;

import java.io.File;
import java.lang.reflect.Field;
import java.util.Arrays;
import java.util.List;

 * Uima sentence iterator that is aware of the current file
 * @author Adam Gibson
public class LabelAwareUimaSentenceIterator extends UimaSentenceIterator implements LabelAwareSentenceIterator {

    public LabelAwareUimaSentenceIterator(SentencePreProcessor preProcessor, String path,UimaResource resource) {
        super(preProcessor, path, resource);

    public LabelAwareUimaSentenceIterator(String path, AnalysisEngine engine) throws ResourceInitializationException {
        super(path, new UimaResource(engine));

     * Returns the current label for nextSentence()
     * @return the label for nextSentence()
    public String currentLabel() {

        try {
             * Little bit hacky, but most concise way to do it.
             * Get the parent collection reader's current file.
             * The collection reader is basically a wrapper for a file iterator.
             * We can use this to ge the current file for the iterator.
            Field f = reader.getClass().getDeclaredField("currentFile");
            File file = (File) f.get(reader);
            return file.getParentFile().getName();

        catch (NullPointerException e1) {
            return "NONE";
        catch(Exception e) {
            throw new RuntimeException(e);


     * Creates a uima sentence iterator with the given path
     * @param path the path to the root directory or file to read from
     * @return the uima sentence iterator for the given root dir or file
     * @throws Exception
    public static LabelAwareSentenceIterator createWithPath(String path) throws Exception {
        return new LabelAwareUimaSentenceIterator(null,path,new UimaResource(AnalysisEngineFactory.createEngine(AnalysisEngineFactory.createEngineDescription(TokenizerAnnotator.getDescription(), SentenceAnnotator.getDescription()))));
    public List<String> currentLabels() {
        return Arrays.asList(currentLabel());

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