Package com.google.common.collect
Class ImmutableMultimap.Builder<K,V>
- java.lang.Object
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- com.google.common.collect.ImmutableMultimap.Builder<K,V>
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- Direct Known Subclasses:
ImmutableListMultimap.Builder
,ImmutableSetMultimap.Builder
- Enclosing class:
- ImmutableMultimap<K,V>
public static class ImmutableMultimap.Builder<K,V> extends Object
A builder for creating immutable multimap instances, especiallypublic static final
multimaps ("constant multimaps"). Example:static final Multimap<String, Integer> STRING_TO_INTEGER_MULTIMAP = new ImmutableMultimap.Builder<String, Integer>() .put("one", 1) .putAll("several", 1, 2, 3) .putAll("many", 1, 2, 3, 4, 5) .build();
Builder instances can be reused; it is safe to call
build()
multiple times to build multiple multimaps in series. Each multimap contains the key-value mappings in the previously created multimaps.- Since:
- 2.0 (imported from Google Collections Library)
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Constructor Summary
Constructors Constructor Description Builder()
Creates a new builder.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description ImmutableMultimap<K,V>
build()
Returns a newly-created immutable multimap.ImmutableMultimap.Builder<K,V>
orderKeysBy(Comparator<? super K> keyComparator)
Specifies the ordering of the generated multimap's keys.ImmutableMultimap.Builder<K,V>
orderValuesBy(Comparator<? super V> valueComparator)
Specifies the ordering of the generated multimap's values for each key.ImmutableMultimap.Builder<K,V>
put(Map.Entry<? extends K,? extends V> entry)
Adds an entry to the built multimap.ImmutableMultimap.Builder<K,V>
put(K key, V value)
Adds a key-value mapping to the built multimap.ImmutableMultimap.Builder<K,V>
putAll(Multimap<? extends K,? extends V> multimap)
Stores another multimap's entries in the built multimap.ImmutableMultimap.Builder<K,V>
putAll(K key, Iterable<? extends V> values)
Stores a collection of values with the same key in the built multimap.ImmutableMultimap.Builder<K,V>
putAll(K key, V... values)
Stores an array of values with the same key in the built multimap.
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Constructor Detail
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Builder
public Builder()
Creates a new builder. The returned builder is equivalent to the builder generated byImmutableMultimap.builder()
.
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Method Detail
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put
public ImmutableMultimap.Builder<K,V> put(K key, V value)
Adds a key-value mapping to the built multimap.
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put
public ImmutableMultimap.Builder<K,V> put(Map.Entry<? extends K,? extends V> entry)
Adds an entry to the built multimap.- Since:
- 11.0
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putAll
public ImmutableMultimap.Builder<K,V> putAll(K key, Iterable<? extends V> values)
Stores a collection of values with the same key in the built multimap.- Throws:
NullPointerException
- ifkey
,values
, or any element invalues
is null. The builder is left in an invalid state.
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putAll
public ImmutableMultimap.Builder<K,V> putAll(K key, V... values)
Stores an array of values with the same key in the built multimap.- Throws:
NullPointerException
- if the key or any value is null. The builder is left in an invalid state.
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putAll
public ImmutableMultimap.Builder<K,V> putAll(Multimap<? extends K,? extends V> multimap)
Stores another multimap's entries in the built multimap. The generated multimap's key and value orderings correspond to the iteration ordering of themultimap.asMap()
view, with new keys and values following any existing keys and values.- Throws:
NullPointerException
- if any key or value inmultimap
is null. The builder is left in an invalid state.
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orderKeysBy
public ImmutableMultimap.Builder<K,V> orderKeysBy(Comparator<? super K> keyComparator)
Specifies the ordering of the generated multimap's keys.- Since:
- 8.0
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orderValuesBy
public ImmutableMultimap.Builder<K,V> orderValuesBy(Comparator<? super V> valueComparator)
Specifies the ordering of the generated multimap's values for each key.- Since:
- 8.0
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build
public ImmutableMultimap<K,V> build()
Returns a newly-created immutable multimap.
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