Package com.google.common.collect
Interface MapConstraint<K,V>
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@GwtCompatible @Beta @Deprecated(since="2022-12-01") public interface MapConstraint<K,V>
Deprecated.The Google Guava Core Libraries are deprecated and will not be part of the AEM SDK after April 2023A constraint on the keys and values that may be added to aMap
orMultimap
. For example,MapConstraints.notNull()
, which prevents a map from including any null keys or values, could be implemented like this:public void checkKeyValue(Object key, Object value) { if (key == null || value == null) { throw new NullPointerException(); } }
In order to be effective, constraints should be deterministic; that is, they should not depend on state that can change (such as external state, random variables, and time) and should only depend on the value of the passed-in key and value. A non-deterministic constraint cannot reliably enforce that all the collection's elements meet the constraint, since the constraint is only enforced when elements are added.
- Since:
- 3.0
- See Also:
MapConstraints
,Constraint
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Method Summary
All Methods Instance Methods Abstract Methods Deprecated Methods Modifier and Type Method Description void
checkKeyValue(K key, V value)
Deprecated.Throws a suitableRuntimeException
if the specified key or value is illegal.java.lang.String
toString()
Deprecated.Returns a brief human readable description of this constraint, such as "Not null".
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Method Detail
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checkKeyValue
void checkKeyValue(@Nullable K key, @Nullable V value)
Deprecated.Throws a suitableRuntimeException
if the specified key or value is illegal. Typically this is either aNullPointerException
, anIllegalArgumentException
, or aClassCastException
, though an application-specific exception class may be used if appropriate.
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toString
java.lang.String toString()
Deprecated.Returns a brief human readable description of this constraint, such as "Not null".- Overrides:
toString
in classjava.lang.Object
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