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/*
 * Copyright 2002-2018 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
 *
 *      https://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 org.springframework.cache.jcache.interceptor;

import java.lang.annotation.Annotation;
import java.lang.reflect.Method;
import java.util.Arrays;
import java.util.Set;

import javax.cache.annotation.CacheInvocationContext;
import javax.cache.annotation.CacheInvocationParameter;

import org.springframework.cache.interceptor.CacheOperationInvocationContext;

/**
 * The default {@link CacheOperationInvocationContext} implementation used
 * by all interceptors. Also implements {@link CacheInvocationContext} to
 * act as a proper bridge when calling JSR-107 {@link javax.cache.annotation.CacheResolver}
 *
 * @author Stephane Nicoll
 * @since 4.1
 * @param  the annotation type
 */
class DefaultCacheInvocationContext
		implements CacheInvocationContext, CacheOperationInvocationContext> {

	private final JCacheOperation operation;

	private final Object target;

	private final Object[] args;

	private final CacheInvocationParameter[] allParameters;


	public DefaultCacheInvocationContext(JCacheOperation operation, Object target, Object[] args) {
		this.operation = operation;
		this.target = target;
		this.args = args;
		this.allParameters = operation.getAllParameters(args);
	}


	@Override
	public JCacheOperation getOperation() {
		return this.operation;
	}

	@Override
	public Method getMethod() {
		return this.operation.getMethod();
	}

	@Override
	public Object[] getArgs() {
		return this.args.clone();
	}

	@Override
	public Set getAnnotations() {
		return this.operation.getAnnotations();
	}

	@Override
	public A getCacheAnnotation() {
		return this.operation.getCacheAnnotation();
	}

	@Override
	public String getCacheName() {
		return this.operation.getCacheName();
	}

	@Override
	public Object getTarget() {
		return this.target;
	}

	@Override
	public CacheInvocationParameter[] getAllParameters() {
		return this.allParameters.clone();
	}

	@Override
	public  T unwrap(Class cls) {
		throw new IllegalArgumentException("Cannot unwrap to " + cls);
	}


	@Override
	public String toString() {
		StringBuilder sb = new StringBuilder("CacheInvocationContext{");
		sb.append("operation=").append(this.operation);
		sb.append(", target=").append(this.target);
		sb.append(", args=").append(Arrays.toString(this.args));
		sb.append(", allParameters=").append(Arrays.toString(this.allParameters));
		sb.append('}');
		return sb.toString();
	}

}