Class Helpers.NullsBefore

java.lang.Object

com.google.common.collect.testing.Helpers.NullsBefore

All Implemented Interfaces:

Serializable, Comparator<@Nullable String>

Direct Known Subclasses:

Helpers.NullsBeforeB, Helpers.NullsBeforeTwo

Enclosing class:

Helpers

public abstract static class Helpers.NullsBefore
extends Object
implements Comparator<@Nullable String>, Serializable

Compares strings in natural order except that null comes immediately before a given value. This works better than Ordering.natural().nullsFirst() because, if null comes before all other values, it lies outside the submap/submultiset ranges we test, and the variety of tests that exercise null handling fail on those subcollections.

See Also:

• Serialized Form

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	NullsBefore(String justAfterNull)

Method Summary

Modifier and Type	Method	Description
int	compare(@Nullable String lhs, @Nullable String rhs)
boolean	equals(@Nullable Object obj)
int	hashCode()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.util.Comparator

reversed, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

Constructor Details

NullsBefore

protected NullsBefore(String justAfterNull)

Method Details

compare

public int compare(@Nullable String lhs,
 @Nullable String rhs)

Specified by:

compare in interface Comparator<@Nullable String>

equals

public boolean equals(@Nullable Object obj)

Specified by:

equals in interface Comparator<@Nullable String>

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object