CohMain

/*
 * Copyright (c) 2008-2015, 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 coh;

import com.tangosol.net.CacheFactory;
import com.tangosol.net.NamedCache;
import com.tangosol.util.Filter;
import com.tangosol.util.filter.LimitFilter;

import java.io.Serializable;
import java.util.Collections;
import java.util.Comparator;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentSkipListSet;
import java.util.concurrent.CopyOnWriteArrayList;
import java.util.concurrent.atomic.AtomicInteger;

/**
 * TODO add a proper JavaDoc
 */
public class CohMain {

    public static final int DATA_COUNT = 200 * 1000;

    static NamedCache c;
    static MyComparator comparator;
    static LimitFilter limitFilter;

    public static void main(String[] args) {
        c = CacheFactory.getCache("c");
        while (c.size() != DATA_COUNT) {
            sleepSeconds(5);
        }
        sleepSeconds(10);
        comparator = new MyComparator();
        MyFilter filter = new MyFilter();
        limitFilter = new LimitFilter(filter, 50);

        getPage(1500);
    }

    static void getPage(int page) {
        limitFilter.setPage(page);
        long begin = System.nanoTime();
        Set set = c.entrySet(limitFilter, comparator);
        long elapsed = System.nanoTime() - begin;
        System.err.println("fatal page: " + page + " elapsed : " + (elapsed / 1000000));
        printSet(set);
    }

    static void printSet(Set set) {
        for (Object o : set) {
            System.err.println("qwe \t " + o);
        }
        System.err.println("");
    }

    static void sleepSeconds(int seconds) {
        try {
            Thread.sleep(seconds * 1000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }

    public static class MyFilter implements Filter, Serializable {

        public MyFilter() {
        }

        public boolean evaluate(Object o) {
//            System.err.println("eval o: " + o);
            return true;
        }
    }

    public static class MyComparator implements Comparator, Serializable {

        public int compare(Object o1, Object o2) {
            //System.err.println("compare o1: " + o1 + "\t\t o2: " + o2);
            return ((Comparable) o1).compareTo(o2);
        }
    }
}