hyracks/hyracks-storage-am-btree/src/main/java/edu/uci/ics/hyracks/storage/am/btree/api/IBTreeLeafFrame.java

/*
 * Copyright 2009-2013 by The Regents of the University of California
 * 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 from
 * 
 *     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 edu.uci.ics.hyracks.storage.am.btree.api;

import edu.uci.ics.hyracks.api.exceptions.HyracksDataException;
import edu.uci.ics.hyracks.dataflow.common.data.accessors.ITupleReference;
import edu.uci.ics.hyracks.storage.am.common.api.ITreeIndexTupleReference;
import edu.uci.ics.hyracks.storage.am.common.api.TreeIndexException;
import edu.uci.ics.hyracks.storage.am.common.ophelpers.FindTupleMode;
import edu.uci.ics.hyracks.storage.am.common.ophelpers.FindTupleNoExactMatchPolicy;
import edu.uci.ics.hyracks.storage.am.common.ophelpers.MultiComparator;

public interface IBTreeLeafFrame extends IBTreeFrame {
    public int findTupleIndex(ITupleReference searchKey, ITreeIndexTupleReference pageTuple, MultiComparator cmp,
            FindTupleMode ftm, FindTupleNoExactMatchPolicy ftp) throws HyracksDataException;

    public int findUpdateTupleIndex(ITupleReference tuple) throws TreeIndexException;

    public int findUpsertTupleIndex(ITupleReference tuple) throws TreeIndexException;

    /**
     * @param searchTuple the tuple to match 
     * @param targetTupleIndex the index of the tuple to check
     * @return the tuple at targetTupleIndex if its keys match searchTuple's keys, otherwise null 
     */
    public ITupleReference getMatchingKeyTuple(ITupleReference searchTuple, int targetTupleIndex);

    public void setNextLeaf(int nextPage);

    public int getNextLeaf();
}