/*
* Copyright (C) 2008 The Guava Authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.google.common.collect;
import com.google.common.annotations.GwtCompatible;
/**
* Bimap with one or more mappings.
*
* @author Jared Levy
*/
@GwtCompatible(serializable = true, emulated = true)
@SuppressWarnings("serial") // uses writeReplace(), not default serialization
class RegularImmutableBiMap<K, V> extends ImmutableBiMap<K, V> {
final transient ImmutableMap<K, V> delegate;
final transient ImmutableBiMap<V, K> inverse;
RegularImmutableBiMap(ImmutableMap<K, V> delegate) {
this.delegate = delegate;
ImmutableMap.Builder<V, K> builder = ImmutableMap.builder();
for (Entry<K, V> entry : delegate.entrySet()) {
builder.put(entry.getValue(), entry.getKey());
}
ImmutableMap<V, K> backwardMap = builder.build();
this.inverse = new RegularImmutableBiMap<V, K>(backwardMap, this);
}
RegularImmutableBiMap(ImmutableMap<K, V> delegate,
ImmutableBiMap<V, K> inverse) {
this.delegate = delegate;
this.inverse = inverse;
}
@Override ImmutableMap<K, V> delegate() {
return delegate;
}
@Override public ImmutableBiMap<V, K> inverse() {
return inverse;
}
@Override boolean isPartialView() {
return delegate.isPartialView() || inverse.delegate().isPartialView();
}
}
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