JMH Benchmark

`

import com.gs.collections.api.block.predicate.Predicate2;
import com.gs.collections.api.list.MutableList;
import com.gs.collections.api.map.MutableMap;
import com.gs.collections.impl.list.mutable.FastList;
import com.gs.collections.impl.map.mutable.UnifiedMap;
import org.openjdk.jmh.annotations.*;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.TimeUnit;

@State(Scope.Thread)
@BenchmarkMode(Mode.AverageTime)
@OutputTimeUnit(TimeUnit.MICROSECONDS)

public class CollectionComparison {

    //Java Collections
    List<PermissionKey> firstset = new ArrayList<>();
    List<Permissions> permissions = new ArrayList<>();
    Map<PermissionKey, List<Permissions>> secondset = new HashMap<>();

    //Goldmansachs Collections
    MutableList<PermissionKey> gsfirstset = FastList.newList();
    MutableList<Permissions> gspermissions = FastList.newList();
    MutableMap<PermissionKey, MutableList<Permissions>> gssecondset =
                                                                UnifiedMap.newMap();

    @Setup
    public void setUp() {
        //Setup for using Java Collections
        firstset.add(new PermissionKey("P1", "R1"));
        firstset.add(new PermissionKey("P2", "R2"));
        firstset.add(new PermissionKey("P3", "R3"));

        permissions.add(new Permissions());

        secondset.put(new PermissionKey("P1", "R1"),permissions);
        secondset.put(new PermissionKey("P2", "R2"),permissions);

        //Setup for using Goldmansachs Collections
        gsfirstset.add(new PermissionKey("P1", "R1"));
        gsfirstset.add(new PermissionKey("P2", "R2"));
        gsfirstset.add(new PermissionKey("P3", "R3"));

        gspermissions.add(new Permissions());

        gssecondset.put(new PermissionKey("P1", "R1"),gspermissions);
        gssecondset.put(new PermissionKey("P2", "R2"),gspermissions);

    }

    @Benchmark
    public void javacollections() {
        PermissionKey key = null;
        Map<PermissionKey, List<Permissions>> result = new HashMap<>();
        for (PermissionKey pkey : firstset) {
            for (Map.Entry<PermissionKey, List<Permissions>> entry : secondset.entrySet()) {
                key = entry.getKey();
                if (entry.getKey().equals( pkey )) {
                    result.put(key,entry.getValue());
                }
            }
        }

    }



    @Benchmark
    public void goldmansachscollections() {
        MutableMap<PermissionKey,MutableList<Permissions>> result = gssecondset.select(
                new Predicate2<PermissionKey,MutableList<Permissions>>() {
                    public boolean accept(PermissionKey each,MutableList<Permissions> each1) {
                        return gsfirstset.contains(each);
                    }
                });
    }
}

`