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Copyright (C) 2011 the original author or authors. See the file distributed with this work for additional information regarding copyright ownership. 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 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.iq80.leveldb;

Hiram Chirino
public interface DBIterator extends Iterator<Map.Entry<byte[], byte[]>>, Closeable {

Repositions the iterator so the key of the next BlockElement returned greater than or equal to the specified targetKey.
    public void seek(byte[] key);

Repositions the iterator so is is at the beginning of the Database.
    public void seekToFirst();

Returns the next element in the iteration, without advancing the iteration.
    public Map.Entry<byte[], byte[]> peekNext();


true if there is a previous entry in the iteration.
    boolean hasPrev();


the previous element in the iteration and rewinds the iteration.
    Map.Entry<byte[], byte[]> prev();


the previous element in the iteration, without rewinding the iteration.
    public Map.Entry<byte[], byte[]> peekPrev();

Repositions the iterator so it is at the end of of the Database.
    public void seekToLast();
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