io.undertow.server.MapDelegatingToSet Maven / Gradle / Ivy
/*
* JBoss, Home of Professional Open Source.
* Copyright 2014 Red Hat, Inc., and individual contributors
* as indicated by the @author tags.
*
* 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 io.undertow.server;
import static java.util.Collections.emptySet;
import static java.util.Collections.unmodifiableCollection;
import static java.util.Collections.unmodifiableSet;
import io.undertow.server.handlers.Cookie;
import java.util.Collection;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import java.util.function.BiConsumer;
import java.util.function.BiFunction;
import java.util.function.Function;
/**
* @author Richard Opalka
*/
final class MapDelegatingToSet extends HashMap {
private final Set delegate;
MapDelegatingToSet(final Set delegate) {
this.delegate = delegate;
}
@Override
public int size() {
return delegate.size();
}
@Override
public boolean isEmpty() {
return delegate.isEmpty();
}
@Override
public Cookie get(final Object key) {
if (key == null) return null;
for (Cookie cookie : delegate) {
if (key.equals(cookie.getName())) return cookie;
}
return null;
}
@Override
public boolean containsKey(final Object key) {
if (key == null) return false;
for (Cookie cookie : delegate) {
if (key.equals(cookie.getName())) return true;
}
return false;
}
@Override
public Cookie put(final String key, final Cookie value) {
if (key == null) return null;
final Cookie retVal = remove(key);
if (value != null) {
delegate.add(value);
}
return retVal;
}
@Override
public void putAll(final Map m) {
if (m == null) return;
for (Map.Entry entry : m.entrySet()) {
put(entry.getKey(), entry.getValue());
}
}
@Override
public Cookie remove(final Object key) {
if (key == null) return null;
Cookie removedValue = null;
for (Cookie cookie : delegate) {
if (key.equals(cookie.getName())) {
removedValue = cookie;
break;
}
}
if (removedValue != null) delegate.remove(removedValue);
return removedValue;
}
@Override
public void clear() {
delegate.clear();
}
@Override
public boolean containsValue(final Object value) {
if (value == null) return false;
return delegate.contains(value);
}
@Override
public Set keySet() {
if (delegate.isEmpty()) return emptySet();
final Set retVal = new HashSet<>();
for (Cookie cookie : delegate) {
retVal.add(cookie.getName());
}
return unmodifiableSet(retVal);
}
@Override
public Collection values() {
return delegate.isEmpty() ? emptySet() : unmodifiableCollection(delegate);
}
@Override
public Set> entrySet() {
if (delegate.isEmpty()) return emptySet();
final Set> retVal = new HashSet<>(delegate.size());
for (Cookie cookie : delegate) {
retVal.add(new ReadOnlyEntry(cookie.getName(), cookie));
}
return unmodifiableSet(retVal);
}
@Override
public Cookie getOrDefault(final Object key, final Cookie defaultValue) {
if (key == null) return null;
final Cookie retVal = get(key);
return retVal != null ? retVal : defaultValue;
}
@Override
public Cookie putIfAbsent(final String key, final Cookie value) {
if (key == null) return null;
final Cookie oldVal = get(key);
if (oldVal == null) delegate.add(value);
return oldVal;
}
@Override
public boolean remove(final Object key, final Object value) {
if (key == null || value == null) return false;
Cookie removedValue = null;
for (Cookie cookie : delegate) {
if (cookie == value) {
removedValue = cookie;
break;
}
}
if (removedValue != null) delegate.remove(removedValue);
return removedValue != null;
}
@Override
public boolean replace(final String key, final Cookie oldValue, final Cookie newValue) {
if (key == null) return false;
final Cookie previousValue = get(key);
if (previousValue == oldValue) {
delegate.remove(oldValue);
if (newValue != null) {
delegate.add(newValue);
}
return true;
}
return false;
}
@Override
public Cookie replace(final String key, final Cookie value) {
if (key == null) return null;
final Cookie oldValue = get(key);
if (oldValue != null) {
delegate.remove(oldValue);
if (value != null) {
delegate.add(value);
}
}
return oldValue;
}
@Override
public Cookie computeIfAbsent(final String key, final Function mappingFunction) {
throw new UnsupportedOperationException();
}
@Override
public Cookie computeIfPresent(String key, BiFunction remappingFunction) {
throw new UnsupportedOperationException();
}
@Override
public Cookie compute(String key, BiFunction remappingFunction) {
throw new UnsupportedOperationException();
}
@Override
public Cookie merge(String key, Cookie value, BiFunction remappingFunction) {
throw new UnsupportedOperationException();
}
@Override
public void forEach(BiConsumer action) {
throw new UnsupportedOperationException();
}
@Override
public void replaceAll(BiFunction function) {
throw new UnsupportedOperationException();
}
private static final class ReadOnlyEntry implements Entry {
private final String key;
private final Cookie value;
private ReadOnlyEntry(final String key, final Cookie value) {
this.key = key;
this.value = value;
}
@Override
public String getKey() {
return key;
}
@Override
public Cookie getValue() {
return value;
}
@Override
public Cookie setValue(final Cookie cookie) {
throw new UnsupportedOperationException();
}
}
}