luz2/src/com/lavans/luz2/sql/cluster/CalledMethod.java

   1 /* $Id: CalledMethod.java 94 2008-12-18 11:07:17Z dobashi $\r
   2  * create: 2004/10/28\r
   3  * (c)2004 Lavans Networks Inc. All Rights Reserved.\r
   4  */\r
   5 package com.lavans.luz2.sql.cluster;\r
   6 \r
   7 import java.lang.reflect.InvocationTargetException;\r
   8 import java.lang.reflect.Method;\r
   9 \r
  10 /**\r
  11  * @author dobashi\r
  12  * @version 1.00\r
  13  */\r
  14 class CalledMethod {\r
  15         private String methodName = null;\r
  16         private Object[] args = null;\r
  17         private Class<?>[] parameterTypes = null;\r
  18         private int[] objectTypes = null;\r
  19 \r
  20         /**\r
  21          * コンストラクタ。\r
  22          * @deprecated\r
  23          * @param methodName\r
  24          * @param args\r
  25          */\r
  26 //      public CalledMethod(String methodName, Object[] args){\r
  27 //              this.methodName = methodName;\r
  28 //              this.args = args;\r
  29 //      }\r
  30 \r
  31         /**\r
  32          * コンストラクタ。\r
  33          * parameterType指定有り。\r
  34          * @param methodName\r
  35          * @param args\r
  36          * @param parameterTypes\r
  37          */\r
  38         public CalledMethod(String methodName, Object[] args, Class<?>[] parameterTypes){\r
  39                 this.methodName = methodName;\r
  40                 this.args = args;\r
  41                 this.parameterTypes = parameterTypes;\r
  42         }\r
  43 \r
  44         /**\r
  45          * クラスタリングメソッド呼出処理。\r
  46          * @param target\r
  47          * @return\r
  48          * @throws NoSuchMethodException\r
  49          * @throws InvocationTargetException\r
  50          * @throws IllegalAccessException\r
  51          */\r
  52         public Object invoke(Object target)\r
  53                 throws NoSuchMethodException, InvocationTargetException, IllegalAccessException {\r
  54                 // すべてのclusterCall呼出にClass<?>[]を指定するまでの暫定処理\r
  55                 if(parameterTypes==null){\r
  56                         parameterTypes = getParameterTypes();\r
  57                 }\r
  58 \r
  59                 Method method = target.getClass().getMethod(methodName,parameterTypes);\r
  60                 if(!method.isAccessible()){\r
  61                         method.setAccessible(true);\r
  62                 }\r
  63 \r
  64                 return method.invoke(target,args);\r
  65 \r
  66         }\r
  67 \r
  68         /**\r
  69          * class型設定。\r
  70          * @return\r
  71          */\r
  72         private Class<?>[] getParameterTypes(){\r
  73                 // getMethodに必要な引数の型の取り出し。\r
  74                 Class<?>[] parameterTypes = null;\r
  75                 if(args!=null){                                                         // 引数がnull(引数無し)じゃなければ\r
  76                         parameterTypes = new Class[args.length];        // 引数の型を用意する。\r
  77                         for(int i=0; i<args.length; i++){\r
  78                                 // プリミティブ型の場合はラッパークラスで入っているので\r
  79                                 // プリミティブ型のClassインスタンスを取り出す。\r
  80                                 // 8typeについてそれぞれinstanceofで比較した方が速いか？要実験。\r
  81                                 try{\r
  82                                         if(contains(objectTypes, i)){\r
  83                                                 parameterTypes[i] = Object.class;\r
  84                                         }else{\r
  85                                                 parameterTypes[i] = (Class<?>)args[i].getClass().getField("TYPE").get(null);\r
  86                                         }\r
  87                                 }catch (Exception e) {\r
  88                                         //NoSuchFieldException, SecurityException, IllegalArgumentException, IllegalAccessException\r
  89                                         parameterTypes[i] = args[i].getClass();\r
  90                                 }\r
  91                         }\r
  92                 }\r
  93 \r
  94                 return parameterTypes;\r
  95         }\r
  96 \r
  97         @Override\r
  98         public String toString(){\r
  99                 String argStr = "";\r
 100                 if(args!=null){\r
 101                         for(int i=0; i<args.length; i++){\r
 102                                 if(args[i]==null){\r
 103                                         argStr += ",null";\r
 104                                 }else{\r
 105                                         argStr += ","+ args[i].toString();\r
 106                                 }\r
 107                         }\r
 108                         if(argStr.length()>1){\r
 109                                 argStr = argStr.substring(1);\r
 110                         }\r
 111                 }\r
 112                 return methodName +"("+ argStr +")";\r
 113         }\r
 114 \r
 115         /**\r
 116          * intの配列の中にvalueがあるかどうか判定する。\r
 117          * @param array\r
 118          * @param value\r
 119          * @return\r
 120          */\r
 121         private boolean contains(int[] array, int value){\r
 122                 if(array==null) return false;\r
 123 \r
 124                 for(int i=0; i<array.length; i++){\r
 125                         if(array[i]==value){\r
 126                                 return true;\r
 127                         }\r
 128                 }\r
 129                 return false;\r
 130         }\r
 131 }\r