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Java example source code file (TestDataSetIterator.java)

This example Java source code file (TestDataSetIterator.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

dataset, datasetiterator, datasetpreprocessor, list, override, testdatasetiterator, util

The TestDataSetIterator.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.datasets.test;

import org.nd4j.linalg.dataset.api.iterator.DataSetIterator;
import org.nd4j.linalg.dataset.api.DataSetPreProcessor;
import org.nd4j.linalg.dataset.DataSet;

import java.util.List;

/**
 * Track number of times the dataset iterator has been called
 * @author agibsonccc
 *
 */
public class TestDataSetIterator implements DataSetIterator {
	/**
	 * 
	 */
	private static final long serialVersionUID = -3042802726018263331L;
	private DataSetIterator wrapped;
	private int numDataSets = 0;
    private DataSetPreProcessor preProcessor;
	
	
	public TestDataSetIterator(DataSetIterator wrapped) {
		super();
		this.wrapped = wrapped;
	}

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

	@Override
	public DataSet next() {
		numDataSets++;
		DataSet next = wrapped.next();
        if(preProcessor != null)
            preProcessor.preProcess(next);
        return next;
	}

	@Override
	public void remove() {
		wrapped.remove();
	}

	@Override
	public int totalExamples() {
		return wrapped.totalExamples();
	}

	@Override
	public int inputColumns() {
		return wrapped.inputColumns();
	}

	@Override
	public int totalOutcomes() {
		return wrapped.totalOutcomes();
	}

	@Override
	public void reset() {
		wrapped.reset();
	}

	@Override
	public int batch() {
		return wrapped.batch();
	}

	@Override
	public int cursor() {
		return wrapped.cursor();
	}

	@Override
	public int numExamples() {
		return wrapped.numExamples();
	}

    @Override
    public void setPreProcessor(org.nd4j.linalg.dataset.api.DataSetPreProcessor preProcessor) {
        this.preProcessor = (DataSetPreProcessor) preProcessor;
    }

	@Override
	public List<String> getLabels() {
		return null;
	}


	public synchronized int getNumDataSets() {
		return numDataSets;
	}

	@Override
	public DataSet next(int num) {
		return wrapped.next(num);
	}
	
	
	
}

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