/*
 * Copyright 2009-2010 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;

import edu.uci.ics.hyracks.api.dataflow.value.ISerializerDeserializer;
import edu.uci.ics.hyracks.dataflow.common.data.accessors.ITupleReference;
import edu.uci.ics.hyracks.dataflow.common.data.marshalling.IntegerSerializerDeserializer;
import edu.uci.ics.hyracks.dataflow.common.data.marshalling.UTF8StringSerializerDeserializer;
import edu.uci.ics.hyracks.storage.am.btree.frames.BTreeLeafFrameType;
import edu.uci.ics.hyracks.storage.am.config.AccessMethodTestsConfig;

@SuppressWarnings("rawtypes")
public abstract class OrderedIndexDeleteTest extends OrderedIndexTestDriver {

    private final OrderedIndexTestUtils orderedIndexTestUtils;

    public OrderedIndexDeleteTest(BTreeLeafFrameType[] leafFrameTypesToTest) {
        super(leafFrameTypesToTest);
        this.orderedIndexTestUtils = new OrderedIndexTestUtils();
    }

    private static final int numInsertRounds = AccessMethodTestsConfig.BTREE_NUM_INSERT_ROUNDS;
    private static final int numDeleteRounds = AccessMethodTestsConfig.BTREE_NUM_DELETE_ROUNDS;

    @Override
    protected void runTest(ISerializerDeserializer[] fieldSerdes, int numKeys, BTreeLeafFrameType leafType,
            ITupleReference lowKey, ITupleReference highKey, ITupleReference prefixLowKey, ITupleReference prefixHighKey)
            throws Exception {
        OrderedIndexTestContext ctx = createTestContext(fieldSerdes, numKeys, leafType);
        ctx.getIndex().create();
        ctx.getIndex().activate();
        for (int i = 0; i < numInsertRounds; i++) {
            // We assume all fieldSerdes are of the same type. Check the first
            // one to determine which field types to generate.
            if (fieldSerdes[0] instanceof IntegerSerializerDeserializer) {
                orderedIndexTestUtils.insertIntTuples(ctx, numTuplesToInsert, getRandom());
            } else if (fieldSerdes[0] instanceof UTF8StringSerializerDeserializer) {
                orderedIndexTestUtils.insertStringTuples(ctx, numTuplesToInsert, getRandom());
            }
            int numTuplesPerDeleteRound = (int) Math
                    .ceil((float) ctx.getCheckTuples().size() / (float) numDeleteRounds);
            for (int j = 0; j < numDeleteRounds; j++) {
                orderedIndexTestUtils.deleteTuples(ctx, numTuplesPerDeleteRound, getRandom());
                orderedIndexTestUtils.checkPointSearches(ctx);
                orderedIndexTestUtils.checkScan(ctx);
                orderedIndexTestUtils.checkDiskOrderScan(ctx);
                orderedIndexTestUtils.checkRangeSearch(ctx, lowKey, highKey, true, true);
                if (prefixLowKey != null && prefixHighKey != null) {
                    orderedIndexTestUtils.checkRangeSearch(ctx, prefixLowKey, prefixHighKey, true, true);
                }
            }
        }

        ctx.getIndex().validate();
        ctx.getIndex().deactivate();
        ctx.getIndex().destroy();
    }

    @Override
    protected String getTestOpName() {
        return "Delete";
    }
}