/*
 * Copyright 2002-2016 the original author or 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
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package org.springframework.cache.interceptor;

Abstract the invocation of a cache operation.

Does not provide a way to transmit checked exceptions but provide a special exception that should be used to wrap any exception that was thrown by the underlying invocation. Callers are expected to handle this issue type specifically.

Author:Stephane Nicoll
Since:4.1
/** * Abstract the invocation of a cache operation. * * <p>Does not provide a way to transmit checked exceptions but * provide a special exception that should be used to wrap any * exception that was thrown by the underlying invocation. * Callers are expected to handle this issue type specifically. * * @author Stephane Nicoll * @since 4.1 */
@FunctionalInterface public interface CacheOperationInvoker {
Invoke the cache operation defined by this instance. Wraps any exception that is thrown during the invocation in a ThrowableWrapper.
Throws:
Returns:the result of the operation
/** * Invoke the cache operation defined by this instance. Wraps any exception * that is thrown during the invocation in a {@link ThrowableWrapper}. * @return the result of the operation * @throws ThrowableWrapper if an error occurred while invoking the operation */
Object invoke() throws ThrowableWrapper;
Wrap any exception thrown while invoking CacheOperationInvoker.invoke().
/** * Wrap any exception thrown while invoking {@link #invoke()}. */
@SuppressWarnings("serial") class ThrowableWrapper extends RuntimeException { private final Throwable original; public ThrowableWrapper(Throwable original) { super(original.getMessage(), original); this.original = original; } public Throwable getOriginal() { return this.original; } } }