com.google.common.collect
Interface ClassToInstanceMap<B>
- Type Parameters:
B - the common supertype that all entries must share; often this is
simply Object
- All Superinterfaces:
- Map<Class<? extends B>,B>
- All Known Implementing Classes:
- ImmutableClassToInstanceMap, MutableClassToInstanceMap
@GwtCompatible
public interface ClassToInstanceMap<B>
- extends Map<Class<? extends B>,B>
A map, each entry of which maps a Java
raw type to an instance of that type.
In addition to implementing Map, the additional type-safe operations
putInstance(java.lang.Class, T) and getInstance(java.lang.Class) are available.
Like any other Map<Class, Object>, this map may contain entries
for primitive types, and a primitive type and its corresponding wrapper type
may map to different values.
- Since:
- 2 (imported from Google Collections Library)
- Author:
- Kevin Bourrillion
| Nested classes/interfaces inherited from interface java.util.Map |
Map.Entry<K,V> |
|
Method Summary |
|
getInstance(Class<T> type)
Returns the value the specified class is mapped to, or null if no
entry for this class is present. |
|
putInstance(Class<T> type,
T value)
Maps the specified class to the specified value. |
| Methods inherited from interface java.util.Map |
clear, containsKey, containsValue, entrySet, equals, get, hashCode, isEmpty, keySet, put, putAll, remove, size, values |
getInstance
<T extends B> T getInstance(Class<T> type)
- Returns the value the specified class is mapped to, or
null if no
entry for this class is present. This will only return a value that was
bound to this specific class, not a value that may have been bound to a
subtype.
putInstance
<T extends B> T putInstance(Class<T> type,
@Nullable
T value)
- Maps the specified class to the specified value. Does not associate
this value with any of the class's supertypes.
- Returns:
- the value previously associated with this class (possibly
null), or null if there was no previous entry.