48 lines
1.2 KiB
Java
48 lines
1.2 KiB
Java
/*
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* Copyright 2020-2021 the original author or authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* https://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.springframework.security.oauth2.core.context;
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import java.util.Map;
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import org.springframework.lang.Nullable;
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import org.springframework.util.Assert;
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/**
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* A facility for holding information associated to a specific context.
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*
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* @author Joe Grandja
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* @since 0.1.0
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*/
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public interface Context {
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@Nullable
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<V> V get(Object key);
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@Nullable
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default <V> V get(Class<V> key) {
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Assert.notNull(key, "key cannot be null");
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V value = get((Object) key);
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return key.isInstance(value) ? value : null;
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}
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boolean hasKey(Object key);
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static Context of(Map<Object, Object> context) {
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return new DefaultContext(context);
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}
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}
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