/*
* Copyright (c) 2011-2017 Pivotal Software Inc, All Rights Reserved.
*
* 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 reactor.util.context;
import java.util.
Map;
import java.util.
NoSuchElementException;
import java.util.
Objects;
import java.util.stream.
Stream;
final class
Context0 implements
Context {
static final
Context0 INSTANCE = new
Context0();
@
Override
public
Context put(
Object key,
Object value) {
Objects.
requireNonNull(
key, "key");
Objects.
requireNonNull(
value, "value");
return new
Context1(
key,
value);
}
@
Override
public
Context delete(
Object key) {
return this;
}
@
Override
public <T> T
get(
Object key) {
throw new
NoSuchElementException("Context is empty");
}
@
Override
public boolean
hasKey(
Object key) {
return false;
}
@
Override
public
String toString() {
return "Context0{}";
}
@
Override
public
Stream<
Map.
Entry<
Object,
Object>>
stream() {
return
Stream.
empty();
}
}