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package com.enterprisemath.dao.big;

import java.util.NoSuchElementException;

/**
 * Definition of interface for iterating through big entities.
 *
 * @author radek.hecl
 */
public interface BigEntityIterator {

    /**
     * Returns whether the next observation is available or not.
     *
     * @return true if the next observation is available
     */
    public boolean isNextAvailable();

    /**
     * Returns the next observation.
     *
     * @return next the next observation
     * @throws NoSuchElementException if there is not any more observation available
     */
    public BigEntity getNext() throws NoSuchElementException;

}