StreamSource.java

package com.yahoo.labs.samoa.streams;

/*
 * #%L
 * SAMOA
 * %%
 * Copyright (C) 2013 Yahoo! 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.
 * #L%
 */

/**
 * License
 */

import com.yahoo.labs.samoa.moa.core.Example;
import com.yahoo.labs.samoa.moa.streams.InstanceStream;
import com.yahoo.labs.samoa.instances.Instance;

/**
 * The Class StreamSource.
 */
public class StreamSource implements java.io.Serializable{

	/**
	 * 
	 */
	private static final long serialVersionUID = 3974668694861231236L;

	/**
	 * Instantiates a new stream source.
	 *
	 * @param stream the stream
	 */
	public StreamSource(InstanceStream stream) {
		super();
		this.stream = stream;
	}

	/** The stream. */
	protected InstanceStream stream;

	/**
	 * Gets the stream.
	 *
	 * @return the stream
	 */
	public InstanceStream getStream() {
		return stream;
	}

	/**
	 * Next instance.
	 *
	 * @return the instance
	 */
	public Example<Instance> nextInstance() {
		return stream.nextInstance();
	}

	/**
	 * Sets the stream.
	 *
	 * @param stream the new stream
	 */
	public void setStream(InstanceStream stream) {
		this.stream = stream;
	}

	/**
	 * Checks for more instances.
	 *
	 * @return true, if successful
	 */
	public boolean hasMoreInstances() {
		return this.stream.hasMoreInstances();
	}

}