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package org.apache.kafka.streams.state;

/**
 * Iterator interface of {@link ValueV}.
 * <p>
 * Users must call its {@code close} method explicitly upon completeness to release resources,
 * or use try-with-resources statement (available since JDK7) for this {@link Closeable} class.
 * Note that {@code remove()} is not supported.
 *
 * @param <V> Type of values
 */
public interface ValueIterator<V> extends Iterator<V>, Closeable {

    @Override
    void close();

    /**
     * Peek the next value without advancing the iterator
     * @return the value that would be returned from the next call to next
     */
    V peek();
}