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Commons vs Native
package io.github.rodrik.commons;
import java.time.LocalDate;
import java.util.Arrays;
import org.apache.commons.lang3.builder.CompareToBuilder;
import org.apache.commons.lang3.builder.EqualsBuilder;
import org.apache.commons.lang3.builder.HashCodeBuilder;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import org.junit.runners.Parameterized.Parameters;
@RunWith(Parameterized.class)
public class HashCodeTest {
private static long MAX_ITERATIONS = 100;
@Parameters()
public static Iterable<DateRange[]> data() {
LocalDate startDate = LocalDate.of(2018, 07, 12);
LocalDate endDate = LocalDate.of(2018, 07, 13);
return Arrays.asList(new DateRange[][]{
{new ApacheCommonsDateRange(startDate, endDate), new ApacheCommonsDateRange(startDate, endDate)},
{new NativeDateRange(startDate, endDate), new NativeDateRange(startDate, endDate)}
});
}
private DateRange obj1;
private DateRange obj2;
public HashCodeTest(DateRange obj1, DateRange obj2) {
this.obj1 = obj1;
this.obj2 = obj2;
}
@Test
public void testCompareTo() {
for(long i=0; i<MAX_ITERATIONS; i++) {
obj1.compareTo(obj2);
}
}
@Test
public void testHashCode() {
for(long i=0; i<MAX_ITERATIONS; i++) {
obj1.hashCode();
}
}
@Test
public void testEqualsObject() {
for(long i=0; i<MAX_ITERATIONS; i++) {
obj1.equals(obj2);
}
}
interface DateRange extends Comparable<DateRange> {
public LocalDate getStartDate();
public LocalDate getEndDate();
}
static class ApacheCommonsDateRange implements DateRange {
private final LocalDate startDate;
private final LocalDate endDate;
public ApacheCommonsDateRange(LocalDate startDate, LocalDate endDate) {
super();
this.startDate = startDate;
this.endDate = endDate;
}
@Override
public LocalDate getStartDate() {
return startDate;
}
@Override
public LocalDate getEndDate() {
return endDate;
}
@Override
public int compareTo(DateRange obj) {
return CompareToBuilder.reflectionCompare(this, obj);
}
@Override
public int hashCode() {
return HashCodeBuilder.reflectionHashCode(this, false);
}
@Override
public boolean equals(Object obj) {
return EqualsBuilder.reflectionEquals(this, obj, false);
}
}
static class NativeDateRange implements DateRange {
private final LocalDate startDate;
private final LocalDate endDate;
public NativeDateRange(LocalDate startDate, LocalDate endDate) {
super();
this.startDate = startDate;
this.endDate = endDate;
}
@Override
public LocalDate getStartDate() {
return startDate;
}
@Override
public LocalDate getEndDate() {
return endDate;
}
@Override
public int compareTo(DateRange obj) {
int compareStartDate = getStartDate().compareTo(obj.getStartDate());
return compareStartDate != 0 ? compareStartDate : getEndDate().compareTo(obj.getEndDate());
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((endDate == null) ? 0 : endDate.hashCode());
result = prime * result + ((startDate == null) ? 0 : startDate.hashCode());
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
NativeDateRange other = (NativeDateRange) obj;
if (endDate == null) {
if (other.endDate != null)
return false;
} else if (!endDate.equals(other.endDate))
return false;
if (startDate == null) {
if (other.startDate != null)
return false;
} else if (!startDate.equals(other.startDate))
return false;
return true;
}
}
}
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