/*
 * Copyright (c) 2008-2017, Hazelcast, Inc. All Rights Reserved.
 *
 * 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
 *
 * 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 com.hazelcast.query.impl;

import com.hazelcast.nio.serialization.Data;
import com.hazelcast.query.QueryException;
import com.hazelcast.test.HazelcastParallelClassRunner;
import com.hazelcast.test.HazelcastTestSupport;
import com.hazelcast.test.annotation.ParallelTest;
import com.hazelcast.test.annotation.QuickTest;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import org.junit.runner.RunWith;

import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

import static org.junit.Assert.assertEquals;

@RunWith(HazelcastParallelClassRunner.class)
@Category({QuickTest.class, ParallelTest.class})
public class OrResultSetTest extends HazelcastTestSupport {

    @Test
    public void size() {
        int size = 100000;
        Set<QueryableEntry> entries1 = generateEntries(size);
        Set<QueryableEntry> entries2 = generateEntries(size);
        List<Set<QueryableEntry>> indexedResults = new ArrayList<Set<QueryableEntry>>();
        indexedResults.add(entries1);
        indexedResults.add(entries2);

        OrResultSet resultSet = new OrResultSet(indexedResults);

        int sizeMethod = resultSet.size();
        int sizeIterator = 0;
        for (QueryableEntry queryableEntry : resultSet) {
            sizeIterator++;
        }

        assertEquals(2 * size, sizeIterator);
        assertEquals(2 * size, sizeMethod);
    }

    @Test
    public void contains() {
        int size = 100000;
        Set<QueryableEntry> entries1 = generateEntries(size);
        Set<QueryableEntry> entries2 = generateEntries(size);
        List<Set<QueryableEntry>> indexedResults = new ArrayList<Set<QueryableEntry>>();
        indexedResults.add(entries1);
        indexedResults.add(entries2);

        OrResultSet resultSet = new OrResultSet(indexedResults);
        Set<QueryableEntry> combinedEntries = new HashSet<QueryableEntry>(entries1);
        combinedEntries.addAll(entries2);

        for (QueryableEntry entry : combinedEntries) {
            assertContains(resultSet, entry);
        }
        assertNotContains(resultSet, new DummyEntry());
    }

    private Set<QueryableEntry> generateEntries(int count) {
        Set<QueryableEntry> result = new HashSet<QueryableEntry>();
        for (int k = 0; k < count; k++) {
            QueryableEntry entry = new DummyEntry();
            result.add(entry);
        }
        return result;
    }

    private class DummyEntry extends QueryableEntry {
        @Override
        public Object getValue() {
            return null;
        }

        @Override
        public Object getKey() {
            return null;
        }

        @Override
        public Comparable getAttributeValue(String attributeName) throws QueryException {
            return null;
        }

        @Override
        public AttributeType getAttributeType(String attributeName) {
            return null;
        }

        @Override
        public Object getTargetObject(boolean key) {
            return null;
        }

        @Override
        public Object setValue(Object value) {
            return null;
        }

        @Override
        public Data getKeyData() {
            return null;
        }

        @Override
        public Data getValueData() {
            return null;
        }
    }
}