1 /*
2 * Copyright 2004-2008 the Seasar Foundation and the Others.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
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,
13 * either express or implied. See the License for the specific language
14 * governing permissions and limitations under the License.
15 */
16 package org.seasar.uruma.binding.method.impl;
17
18 import java.lang.reflect.Method;
19
20 import org.seasar.uruma.binding.method.ArgumentsFilter;
21
22 /**
23 * ターゲットメソッドの引数よりも数が多い場合に切り捨てを行う {@link ArgumentsFilter} です。<br />
24 *
25 * @author bskuroneko
26 */
27 public class OmissionArgumentsFilter implements ArgumentsFilter {
28
29 private int targetParameterLength;
30
31 /**
32 * {@link OmissionArgumentsFilter} を構築します。<br />
33 *
34 * @param targetMethod
35 * ターゲットメソッド
36 */
37 public OmissionArgumentsFilter(final Method targetMethod) {
38 this.targetParameterLength = targetMethod.getParameterTypes().length;
39 }
40
41 /*
42 * @see org.seasar.uruma.binding.method.ArgumentsFilter#filter(java.lang.Object[])
43 */
44 public Object[] filter(final Object[] args) {
45 if (args == null) {
46 return null;
47 }
48
49 if (targetParameterLength >= args.length) {
50 return args;
51 }
52
53 Object[] adjustArgs = new Object[targetParameterLength];
54 System.arraycopy(args, 0, adjustArgs, 0, adjustArgs.length);
55 return adjustArgs;
56 }
57 }