Package com.google.common.collect

Class ImmutableClassToInstanceMap.Builder<B>

java.lang.Object

com.google.common.collect.ImmutableClassToInstanceMap.Builder<B>

Enclosing class:

ImmutableClassToInstanceMap<B>

public static final class ImmutableClassToInstanceMap.Builder<B>
extends Object

A builder for creating immutable class-to-instance maps. Example:

 static final ImmutableClassToInstanceMap<Handler> HANDLERS =
     new ImmutableClassToInstanceMap.Builder<Handler>()
         .put(FooHandler.class, new FooHandler())
         .put(BarHandler.class, new SubBarHandler())
         .put(Handler.class, new QuuxHandler())
         .build();
 

After invoking build() it is still possible to add more entries and build again. Thus each map generated by this builder will be a superset of any map generated before it.

Since:

2.0

Constructor Summary

Constructors

Constructor	Description
Builder()	Creates a new builder.

Method Summary

Modifier and Type	Method	Description
ImmutableClassToInstanceMap<B>	build()	Returns a new immutable class-to-instance map containing the entries provided to this builder.
<T extends B> ImmutableClassToInstanceMap.Builder<B>	put(Class<T> key, T value)	Associates key with value in the built map.
<T extends B> ImmutableClassToInstanceMap.Builder<B>	putAll(Map<? extends Class<? extends T>,? extends T> map)	Associates all of map's keys and values in the built map.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Builder

public Builder()

Creates a new builder.

Method Detail

put

@CanIgnoreReturnValue
public <T extends B> ImmutableClassToInstanceMap.Builder<B> put(Class<T> key,
                                                                T value)

Associates key with value in the built map. Duplicate keys are not allowed, and will cause build() to fail.

putAll

@CanIgnoreReturnValue
public <T extends B> ImmutableClassToInstanceMap.Builder<B> putAll(Map<? extends Class<? extends T>,? extends T> map)

Associates all of map's keys and values in the built map. Duplicate keys are not allowed, and will cause build() to fail.

Throws:

NullPointerException - if any key or value in map is null

ClassCastException - if any value is not an instance of the type specified by its key

build

public ImmutableClassToInstanceMap<B> build()

Returns a new immutable class-to-instance map containing the entries provided to this builder.

Throws:

IllegalArgumentException - if duplicate keys were added