Package com.google.common.collect
Interface MapDifference<K extends @Nullable Object,V extends @Nullable Object>
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- All Known Subinterfaces:
SortedMapDifference<K,V>
@DoNotMock("Use Maps.difference") @GwtCompatible public interface MapDifference<K extends @Nullable Object,V extends @Nullable Object>
An object representing the differences between two maps.- Since:
- 2.0
- Author:
- Kevin Bourrillion
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Nested Class Summary
Nested Classes Modifier and Type Interface Description static interface
MapDifference.ValueDifference<V extends @Nullable Object>
A difference between the mappings from two maps with the same key.
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Method Summary
All Methods Instance Methods Abstract Methods Modifier and Type Method Description boolean
areEqual()
Returnstrue
if there are no differences between the two maps; that is, if the maps are equal.Map<K,MapDifference.ValueDifference<V>>
entriesDiffering()
Returns an unmodifiable map describing keys that appear in both maps, but with different values.Map<K,V>
entriesInCommon()
Returns an unmodifiable map containing the entries that appear in both maps; that is, the intersection of the two maps.Map<K,V>
entriesOnlyOnLeft()
Returns an unmodifiable map containing the entries from the left map whose keys are not present in the right map.Map<K,V>
entriesOnlyOnRight()
Returns an unmodifiable map containing the entries from the right map whose keys are not present in the left map.boolean
equals(Object object)
Compares the specified object with this instance for equality.int
hashCode()
Returns the hash code for this instance.
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Method Detail
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areEqual
boolean areEqual()
Returnstrue
if there are no differences between the two maps; that is, if the maps are equal.
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entriesOnlyOnLeft
Map<K,V> entriesOnlyOnLeft()
Returns an unmodifiable map containing the entries from the left map whose keys are not present in the right map.
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entriesOnlyOnRight
Map<K,V> entriesOnlyOnRight()
Returns an unmodifiable map containing the entries from the right map whose keys are not present in the left map.
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entriesInCommon
Map<K,V> entriesInCommon()
Returns an unmodifiable map containing the entries that appear in both maps; that is, the intersection of the two maps.
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entriesDiffering
Map<K,MapDifference.ValueDifference<V>> entriesDiffering()
Returns an unmodifiable map describing keys that appear in both maps, but with different values.
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equals
boolean equals(@CheckForNull Object object)
Compares the specified object with this instance for equality. Returnstrue
if the given object is also aMapDifference
and the values returned by theentriesOnlyOnLeft()
,entriesOnlyOnRight()
,entriesInCommon()
andentriesDiffering()
of the two instances are equal.- Overrides:
equals
in classObject
- Parameters:
object
- the reference object with which to compare.- Returns:
true
if this object is the same as the obj argument;false
otherwise.- See Also:
Object.hashCode()
,HashMap
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hashCode
int hashCode()
Returns the hash code for this instance. This is defined as the hash code ofArrays.asList(entriesOnlyOnLeft(), entriesOnlyOnRight(), entriesInCommon(), entriesDiffering())
- Overrides:
hashCode
in classObject
- Returns:
- a hash code value for this object.
- See Also:
Object.equals(java.lang.Object)
,System.identityHashCode(java.lang.Object)
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