Package com.google.common.collect
Class ImmutableClassToInstanceMap<B>
- java.lang.Object
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- com.google.common.collect.ForwardingObject
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- com.google.common.collect.ForwardingMap<Class<? extends B>,B>
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- com.google.common.collect.ImmutableClassToInstanceMap<B>
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- All Implemented Interfaces:
ClassToInstanceMap<B>
,Map<Class<? extends B>,B>
public final class ImmutableClassToInstanceMap<B> extends ForwardingMap<Class<? extends B>,B> implements ClassToInstanceMap<B>
A class-to-instance map backed by anImmutableMap
. See alsoMutableClassToInstanceMap
.- Since:
- 2.0 (imported from Google Collections Library)
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Deprecated Methods Modifier and Type Method Description static <B> ImmutableClassToInstanceMap.Builder<B>
builder()
Returns a new builder.static <B,S extends B>
ImmutableClassToInstanceMap<B>copyOf(Map<? extends Class<? extends S>,? extends S> map)
Returns an immutable map containing the same entries asmap
.<T extends B>
TgetInstance(Class<T> type)
Returns the value the specified class is mapped to, ornull
if no entry for this class is present.<T extends B>
TputInstance(Class<T> type, T value)
Deprecated.Unsupported operation.-
Methods inherited from class com.google.common.collect.ForwardingMap
clear, containsKey, containsValue, entrySet, equals, get, hashCode, isEmpty, keySet, put, putAll, remove, size, values
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Methods inherited from class com.google.common.collect.ForwardingObject
toString
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Methods inherited from interface java.util.Map
clear, compute, computeIfAbsent, computeIfPresent, containsKey, containsValue, entrySet, equals, forEach, get, getOrDefault, hashCode, isEmpty, keySet, merge, put, putAll, putIfAbsent, remove, remove, replace, replace, replaceAll, size, values
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Method Detail
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builder
public static <B> ImmutableClassToInstanceMap.Builder<B> builder()
Returns a new builder. The generated builder is equivalent to the builder created by theImmutableClassToInstanceMap.Builder
constructor.
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copyOf
public static <B,S extends B> ImmutableClassToInstanceMap<B> copyOf(Map<? extends Class<? extends S>,? extends S> map)
Returns an immutable map containing the same entries asmap
. Ifmap
somehow contains entries with duplicate keys (for example, if it is aSortedMap
whose comparator is not consistent with equals), the results of this method are undefined.Note: Despite what the method name suggests, if
map
is anImmutableClassToInstanceMap
, no copy will actually be performed.- Throws:
NullPointerException
- if any key or value inmap
is nullClassCastException
- if any value is not an instance of the type specified by its key
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getInstance
@Nullable public <T extends B> T getInstance(Class<T> type)
Description copied from interface:ClassToInstanceMap
Returns the value the specified class is mapped to, ornull
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.- Specified by:
getInstance
in interfaceClassToInstanceMap<B>
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putInstance
@Deprecated public <T extends B> T putInstance(Class<T> type, T value)
Deprecated.Unsupported operation.Guaranteed to throw an exception and leave the map unmodified.- Specified by:
putInstance
in interfaceClassToInstanceMap<B>
- Returns:
- the value previously associated with this class (possibly
null
), ornull
if there was no previous entry. - Throws:
UnsupportedOperationException
- always
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