com.facebook.presto.jdbc.internal.guava.collect.ImmutableMapEntrySet Maven / Gradle / Ivy
/*
* 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.facebook.presto.jdbc.internal.guava.collect;
import com.facebook.presto.jdbc.internal.guava.annotations.GwtCompatible;
import com.facebook.presto.jdbc.internal.guava.annotations.GwtIncompatible;
import com.facebook.presto.jdbc.internal.j2objc.annotations.Weak;
import java.io.Serializable;
import java.util.Map.Entry;
import java.util.Spliterator;
import java.util.function.Consumer;
import org.checkerframework.checker.nullness.qual.Nullable;
/**
* {@code entrySet()} implementation for {@link ImmutableMap}.
*
* @author Jesse Wilson
* @author Kevin Bourrillion
*/
@GwtCompatible(emulated = true)
abstract class ImmutableMapEntrySet extends ImmutableSet> {
static final class RegularEntrySet extends ImmutableMapEntrySet {
@Weak private final transient ImmutableMap map;
private final transient ImmutableList> entries;
RegularEntrySet(ImmutableMap map, Entry[] entries) {
this(map, ImmutableList.>asImmutableList(entries));
}
RegularEntrySet(ImmutableMap map, ImmutableList> entries) {
this.map = map;
this.entries = entries;
}
@Override
ImmutableMap map() {
return map;
}
@Override
@GwtIncompatible("not used in GWT")
int copyIntoArray(Object[] dst, int offset) {
return entries.copyIntoArray(dst, offset);
}
@Override
public UnmodifiableIterator> iterator() {
return entries.iterator();
}
@Override
public Spliterator> spliterator() {
return entries.spliterator();
}
@Override
public void forEach(Consumer super Entry> action) {
entries.forEach(action);
}
@Override
ImmutableList> createAsList() {
return new RegularImmutableAsList<>(this, entries);
}
}
ImmutableMapEntrySet() {}
abstract ImmutableMap map();
@Override
public int size() {
return map().size();
}
@Override
public boolean contains(@Nullable Object object) {
if (object instanceof Entry) {
Entry, ?> entry = (Entry, ?>) object;
V value = map().get(entry.getKey());
return value != null && value.equals(entry.getValue());
}
return false;
}
@Override
boolean isPartialView() {
return map().isPartialView();
}
@Override
@GwtIncompatible // not used in GWT
boolean isHashCodeFast() {
return map().isHashCodeFast();
}
@Override
public int hashCode() {
return map().hashCode();
}
@GwtIncompatible // serialization
@Override
Object writeReplace() {
return new EntrySetSerializedForm<>(map());
}
@GwtIncompatible // serialization
private static class EntrySetSerializedForm implements Serializable {
final ImmutableMap map;
EntrySetSerializedForm(ImmutableMap map) {
this.map = map;
}
Object readResolve() {
return map.entrySet();
}
private static final long serialVersionUID = 0;
}
}
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