01: /*
02: * Copyright 2002-2005 the original author or authors.
03: *
04: * Licensed under the Apache License, Version 2.0 (the "License");
05: * you may not use this file except in compliance with the License.
06: * You may obtain a copy of the License at
07: *
08: * http://www.apache.org/licenses/LICENSE-2.0
09: *
10: * Unless required by applicable law or agreed to in writing, software
11: * distributed under the License is distributed on an "AS IS" BASIS,
12: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13: * See the License for the specific language governing permissions and
14: * limitations under the License.
15: */
16:
17: package org.springframework.aop;
18:
19: import java.lang.reflect.Method;
20:
21: /**
22: * Advice invoked before a method is invoked. Such advices cannot
23: * prevent the method call proceeding, unless they throw a Throwable.
24: *
25: * @see AfterReturningAdvice
26: * @see ThrowsAdvice
27: *
28: * @author Rod Johnson
29: */
30: public interface MethodBeforeAdvice extends BeforeAdvice {
31:
32: /**
33: * Callback before a given method is invoked.
34: * @param method method being invoked
35: * @param args arguments to the method
36: * @param target target of the method invocation. May be <code>null</code>.
37: * @throws Throwable if this object wishes to abort the call.
38: * Any exception thrown will be returned to the caller if it's
39: * allowed by the method signature. Otherwise the exception
40: * will be wrapped as a runtime exception.
41: */
42: void before(Method method, Object[] args, Object target)
43: throws Throwable;
44:
45: }
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