1 package org.apache.velocity.util.introspection; 2 3 /* 4 * Licensed to the Apache Software Foundation (ASF) under one 5 * or more contributor license agreements. See the NOTICE file 6 * distributed with this work for additional information 7 * regarding copyright ownership. The ASF licenses this file 8 * to you under the Apache License, Version 2.0 (the 9 * "License"); you may not use this file except in compliance 10 * with the License. You may obtain a copy of the License at 11 * 12 * http://www.apache.org/licenses/LICENSE-2.0 13 * 14 * Unless required by applicable law or agreed to in writing, 15 * software distributed under the License is distributed on an 16 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 17 * KIND, either express or implied. See the License for the 18 * specific language governing permissions and limitations 19 * under the License. 20 */ 21 22 import java.lang.reflect.InvocationTargetException; 23 import java.lang.reflect.Method; 24 25 /** 26 * Method used for regular method invocation 27 * 28 * $foo.bar() 29 * 30 * 31 * @author <a href="mailto:geirm@optonline.net">Geir Magnusson Jr.</a> 32 * @version $Id$ 33 */ 34 public interface VelMethod 35 { 36 /** 37 * invocation method - called when the method invocation should be 38 * performed and a value returned 39 * @param o 40 * @param params 41 * @return The resulting object. 42 * @throws IllegalAccessException 43 * @throws InvocationTargetException 44 */ invoke(Object o, Object[] params)45 Object invoke(Object o, Object[] params) 46 throws IllegalAccessException, InvocationTargetException; 47 48 /** 49 * specifies if this VelMethod is cacheable and able to be 50 * reused for this class of object it was returned for 51 * 52 * @return true if can be reused for this class, false if not 53 */ isCacheable()54 boolean isCacheable(); 55 56 /** 57 * returns the method name used 58 * @return The method name used 59 */ getMethodName()60 String getMethodName(); 61 62 /** 63 * returns the underlying Method 64 * @return the method 65 * @since 2.0 66 */ getMethod()67 Method getMethod(); 68 69 /** 70 * returns the return type of the method invoked 71 * @return The return type of the method invoked 72 */ getReturnType()73 Class<?> getReturnType(); 74 } 75