Package com.google.common.reflect

Class ImmutableTypeToInstanceMap<B>

com.google.common.collect.ForwardingObject

com.google.common.collect.ForwardingMap<TypeToken<? extends B>,B>

com.google.common.reflect.ImmutableTypeToInstanceMap<B>

All Implemented Interfaces:

<TypeToken<? extends B>,B>

@Beta
public final class ImmutableTypeToInstanceMap<B>
extends ForwardingMap<TypeToken<? extends B>,B>
implements TypeToInstanceMap<B>

A type-to-instance map backed by an ImmutableMap. See also MutableTypeToInstanceMap.

Since:

13.0

Author:

Ben Yu

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	ImmutableTypeToInstanceMap.Builder<B>	A builder for creating immutable type-to-instance maps.

Nested classes/interfaces inherited from class com.google.common.collect.ForwardingMap

ForwardingMap.StandardEntrySet, ForwardingMap.StandardKeySet, ForwardingMap.StandardValues

Nested classes/interfaces inherited from interface java.util.

<,>

Method Summary

Modifier and Type	Method	Description
static <B> ImmutableTypeToInstanceMap.Builder<B>	builder()	Returns a new builder.
protected <TypeToken<? extends B>,B>	delegate()	Returns the backing delegate instance that methods are forwarded to.
<T extends B> T	getInstance(TypeToken<T> type)	Returns the value the specified type is mapped to, or null if no entry for this type is present.
<T extends B> T	<T> type)	Returns the value the specified class is mapped to, or null if no entry for this class is present.
static <B> ImmutableTypeToInstanceMap<B>	of()	Returns an empty type to instance map.
B	put(TypeToken<? extends B> key, B value)	Deprecated. unsupported operation
void	<? extends TypeToken<? extends B>,? extends B> map)	Deprecated. unsupported operation
<T extends B> T	putInstance(TypeToken<T> type, T value)	Deprecated. unsupported operation
<T extends B> T	<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, remove, size, standardClear, standardContainsKey, standardContainsValue, standardEquals, standardHashCode, standardIsEmpty, standardPutAll, standardRemove, standardToString, values

Methods inherited from class com.google.common.collect.ForwardingObject

toString

Methods inherited from class java.lang.

, , , , , , ,

Methods inherited from interface java.util.

, , , , , , , , , , , , , , , , , , , , , ,

Method Detail

of

public static <B> ImmutableTypeToInstanceMap<B> of()

Returns an empty type to instance map.

Type Parameters:

B - the Map's key type

Returns:

an empty Map

builder

public static <B> ImmutableTypeToInstanceMap.Builder<B> builder()

Returns a new builder.

getInstance

public <T extends B> T getInstance(TypeToken<T> type)

Description copied from interface: TypeToInstanceMap

Returns the value the specified type is mapped to, or null if no entry for this type is present. This will only return a value that was bound to this specific type, not a value that may have been bound to a subtype.

Specified by:

getInstance in interface TypeToInstanceMap<B>

getInstance

public <T extends <T> type)

Description copied from interface: TypeToInstanceMap

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.

getInstance(Foo.class) is equivalent to getInstance(TypeToken.of(Foo.class)).

Specified by:

getInstance in interface TypeToInstanceMap<B>

putInstance

public <T extends B> T putInstance(TypeToken<T> type,
                                   T value)

Deprecated.

unsupported operation

Guaranteed to throw an exception and leave the map unmodified.

Specified by:

putInstance in interface TypeToInstanceMap<B>

Returns:

the value previously associated with this type (possibly null), or null if there was no previous entry.

Throws:

- always

putInstance

public <T extends <T> type,
                                   T value)

Deprecated.

unsupported operation

Guaranteed to throw an exception and leave the map unmodified.

Specified by:

putInstance in interface TypeToInstanceMap<B>

Returns:

the value previously associated with this class (possibly null), or null if there was no previous entry.

Throws:

- always

put

public B put(TypeToken<? extends B> key,
             B value)

Deprecated.

unsupported operation

Guaranteed to throw an exception and leave the map unmodified.

Specified by:

in interface <TypeToken<? extends B>,B>

Overrides:

put in class ForwardingMap<TypeToken<? extends B>,B>

Parameters:

key - key with which the specified value is to be associated

value - value to be associated with the specified key

Returns:

the previous value associated with key, or null if there was no mapping for key. (A null return can also indicate that the map previously associated null with key, if the implementation supports null values.)

Throws:

- always

putAll

public void <? extends TypeToken<? extends B>,? extends B> map)

Deprecated.

unsupported operation

Guaranteed to throw an exception and leave the map unmodified.

Specified by:

in interface <TypeToken<? extends B>,B>

Overrides:

putAll in class ForwardingMap<TypeToken<? extends B>,B>

Parameters:

map - mappings to be stored in this map

Throws:

- always

delegate

protected <TypeToken<? extends B>,B> delegate()

Description copied from class: ForwardingObject

Returns the backing delegate instance that methods are forwarded to. Abstract subclasses generally override this method with an abstract method that has a more specific return type, such as ForwardingSet.delegate(). Concrete subclasses override this method to supply the instance being decorated.

Specified by:

delegate in class ForwardingMap<TypeToken<? extends B>,B>