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Java example source code file (SentenceIteratorConverter.java)

This example Java source code file (SentenceIteratorConverter.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.

Learn more about this Java project at its project page.

Java - Java tags/keywords

labelawareiterator, labelawaresentenceiterator, labelleddocument, labelssource, logger, nonnull, override, sentenceiteratorconverter, string

The SentenceIteratorConverter.java Java example source code

package org.deeplearning4j.text.sentenceiterator.interoperability;

import lombok.NonNull;
import org.deeplearning4j.text.documentiterator.LabelAwareIterator;
import org.deeplearning4j.text.documentiterator.LabelledDocument;
import org.deeplearning4j.text.documentiterator.LabelsSource;
import org.deeplearning4j.text.sentenceiterator.SentenceIterator;
import org.deeplearning4j.text.sentenceiterator.labelaware.LabelAwareSentenceIterator;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Simple class providing compatibility between SentenceIterator/LabelAwareSentenceIterator and LabelAwareIterator
 *
 * @author raver119@gmail.com
 */
public class SentenceIteratorConverter implements LabelAwareIterator {
    private SentenceIterator backendIterator;
    private LabelsSource generator;
    protected static final Logger log = LoggerFactory.getLogger(SentenceIteratorConverter.class);

    public SentenceIteratorConverter(@NonNull SentenceIterator iterator) {
        this.backendIterator = iterator;
        this.generator = new LabelsSource();
    }

    public SentenceIteratorConverter(@NonNull SentenceIterator iterator, @NonNull LabelsSource generator) {
        this.backendIterator = iterator;
        this.generator = generator;
    }

    @Override
    public boolean hasNextDocument() {
        return backendIterator.hasNext();
    }

    @Override
    public LabelledDocument nextDocument() {
        LabelledDocument document = new LabelledDocument();

        document.setContent(backendIterator.nextSentence());
        if (backendIterator instanceof LabelAwareSentenceIterator) {
            String currentLabel = ((LabelAwareSentenceIterator) backendIterator).currentLabel();
            document.setLabel(currentLabel);
            generator.storeLabel(currentLabel);
        } else if (generator != null) document.setLabel(generator.nextLabel());

        return document;
    }

    @Override
    public void reset() {
        generator.reset();
        backendIterator.reset();
    }

    @Override
    public LabelsSource getLabelsSource() {
        return generator;
    }
}

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