home | career | drupal | java | mac | mysql | perl | scala | uml | unix  

Java example source code file (BaseS3DataSetIterator.java)

This example Java source code file (BaseS3DataSetIterator.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

bases3datasetiterator, inputstream, list, override, s3downloader, string, util

The BaseS3DataSetIterator.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.aws.s3.reader;

import java.io.InputStream;
import java.util.Iterator;
import java.util.List;

import org.nd4j.linalg.dataset.api.iterator.DataSetIterator;
/**
 * baseline data applyTransformToDestination iterator for
 * @author Adam Gibson
 *
 */
public abstract class BaseS3DataSetIterator implements DataSetIterator {

	/**
	 * 
	 */
	private static final long serialVersionUID = 885205002006822431L;
	private S3Downloader downloader;
	private List<String> buckets;
	private int currBucket;
	private Iterator<InputStream> currIterator;
	
	public BaseS3DataSetIterator() {
		downloader = new S3Downloader();
		buckets = downloader.buckets();
		currBucket = 0;
		currIterator = downloader.iterateBucket(buckets.get(currBucket));
	}




	public InputStream nextObject() {
		if(currIterator.hasNext())
			return currIterator.next();
		else if(currBucket < buckets.size()) {
			currBucket++;
			currIterator = downloader.iterateBucket(buckets.get(currBucket));
			return currIterator.next();
		}
		
		return null;
	}



	@Override
	public boolean hasNext() {
		return currBucket < buckets.size() && currIterator.hasNext();
	}






	public String currBucket() {
		return buckets.get(currBucket);
	}



	public void nextBucket() {
		currBucket++;
	}




}

Other Java examples (source code examples)

Here is a short list of links related to this Java BaseS3DataSetIterator.java source code file:



my book on functional programming

 

new blog posts

 

Copyright 1998-2019 Alvin Alexander, alvinalexander.com
All Rights Reserved.

A percentage of advertising revenue from
pages under the /java/jwarehouse URI on this website is
paid back to open source projects.