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1 /* |
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2 * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. Oracle designates this |
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8 * particular file as subject to the "Classpath" exception as provided |
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9 * by Oracle in the LICENSE file that accompanied this code. |
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10 * |
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11 * This code is distributed in the hope that it will be useful, but WITHOUT |
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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14 * version 2 for more details (a copy is included in the LICENSE file that |
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15 * accompanied this code). |
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16 * |
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17 * You should have received a copy of the GNU General Public License version |
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18 * 2 along with this work; if not, write to the Free Software Foundation, |
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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20 * |
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21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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22 * or visit www.oracle.com if you need additional information or have any |
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23 * questions. |
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24 */ |
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25 |
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26 package com.sun.xml.internal.bind.v2.runtime.reflect.opt; |
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27 |
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28 import java.lang.reflect.Field; |
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29 import java.lang.reflect.Method; |
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30 import java.lang.reflect.Modifier; |
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31 import java.util.logging.Level; |
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32 import java.util.logging.Logger; |
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33 |
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34 import com.sun.xml.internal.bind.Util; |
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35 import com.sun.xml.internal.bind.v2.runtime.reflect.Accessor; |
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36 import com.sun.xml.internal.bind.v2.runtime.RuntimeUtil; |
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37 |
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38 import static com.sun.xml.internal.bind.v2.bytecode.ClassTailor.toVMClassName; |
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39 import static com.sun.xml.internal.bind.v2.bytecode.ClassTailor.toVMTypeName; |
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40 |
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41 /** |
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42 * @author Kohsuke Kawaguchi |
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43 */ |
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44 public abstract class OptimizedAccessorFactory { |
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45 private OptimizedAccessorFactory() {} // no instanciation please |
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46 |
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47 private static final Logger logger = Util.getClassLogger(); |
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48 |
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49 |
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50 private static final String fieldTemplateName; |
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51 private static final String methodTemplateName; |
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52 |
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53 static { |
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54 String s = FieldAccessor_Byte.class.getName(); |
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55 fieldTemplateName = s.substring(0,s.length()-"Byte".length()).replace('.','/'); |
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56 |
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57 s = MethodAccessor_Byte.class.getName(); |
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58 methodTemplateName = s.substring(0,s.length()-"Byte".length()).replace('.','/'); |
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59 } |
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60 |
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61 /** |
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62 * Gets the optimized {@link Accessor} that accesses the given getter/setter. |
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63 * |
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64 * @return null |
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65 * if for some reason it fails to create an optimized version. |
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66 */ |
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67 public static final <B,V> Accessor<B,V> get(Method getter, Method setter) { |
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68 // make sure the method signatures are what we expect |
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69 if(getter.getParameterTypes().length!=0) |
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70 return null; |
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71 Class<?>[] sparams = setter.getParameterTypes(); |
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72 if(sparams.length!=1) |
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73 return null; |
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74 if(sparams[0]!=getter.getReturnType()) |
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75 return null; |
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76 if(setter.getReturnType()!=Void.TYPE) |
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77 return null; |
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78 if(getter.getDeclaringClass()!=setter.getDeclaringClass()) |
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79 return null; |
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80 if(Modifier.isPrivate(getter.getModifiers()) || Modifier.isPrivate(setter.getModifiers())) |
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81 // we can't access private fields |
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82 return null; |
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83 |
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84 Class t = sparams[0]; |
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85 String typeName = t.getName().replace('.','_'); |
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86 if (t.isArray()) { |
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87 typeName = "AOf_"; |
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88 String compName = t.getComponentType().getName().replace('.','_'); |
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89 while (compName.startsWith("[L")) { |
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90 compName = compName.substring(2); |
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91 typeName += "AOf_"; |
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92 } |
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93 typeName = typeName + compName; |
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94 } |
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95 |
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96 String newClassName = toVMClassName(getter.getDeclaringClass())+"$JaxbAccessorM_"+getter.getName()+'_'+setter.getName()+'_'+typeName; |
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97 Class opt; |
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98 |
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99 if(t.isPrimitive()) |
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100 opt = AccessorInjector.prepare( getter.getDeclaringClass(), |
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101 methodTemplateName+RuntimeUtil.primitiveToBox.get(t).getSimpleName(), |
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102 newClassName, |
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103 toVMClassName(Bean.class), |
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104 toVMClassName(getter.getDeclaringClass()), |
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105 "get_"+t.getName(), |
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106 getter.getName(), |
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107 "set_"+t.getName(), |
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108 setter.getName()); |
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109 else |
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110 opt = AccessorInjector.prepare( getter.getDeclaringClass(), |
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111 methodTemplateName+"Ref", |
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112 newClassName, |
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113 toVMClassName(Bean.class), |
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114 toVMClassName(getter.getDeclaringClass()), |
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115 toVMClassName(Ref.class), |
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116 toVMClassName(t), |
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117 "()"+toVMTypeName(Ref.class), |
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118 "()"+toVMTypeName(t), |
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119 '('+toVMTypeName(Ref.class)+")V", |
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120 '('+toVMTypeName(t)+")V", |
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121 "get_ref", |
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122 getter.getName(), |
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123 "set_ref", |
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124 setter.getName()); |
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125 |
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126 if(opt==null) |
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127 return null; |
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128 |
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129 Accessor<B,V> acc = instanciate(opt); |
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130 if(acc!=null) |
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131 logger.log(Level.FINE,"Using optimized Accessor for "+getter+" and "+setter); |
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132 return acc; |
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133 } |
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134 |
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135 |
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136 /** |
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137 * Gets the optimizd {@link Accessor} that accesses the given field. |
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138 * |
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139 * @return null |
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140 * if for some reason it fails to create an optimized version. |
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141 */ |
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142 public static final <B,V> Accessor<B,V> get(Field field) { |
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143 int mods = field.getModifiers(); |
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144 if(Modifier.isPrivate(mods) || Modifier.isFinal(mods)) |
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145 // we can't access private fields |
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146 return null; |
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147 |
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148 String newClassName = toVMClassName(field.getDeclaringClass())+"$JaxbAccessorF_"+field.getName(); |
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149 |
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150 Class opt; |
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151 |
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152 if(field.getType().isPrimitive()) |
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153 opt = AccessorInjector.prepare( field.getDeclaringClass(), |
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154 fieldTemplateName+RuntimeUtil.primitiveToBox.get(field.getType()).getSimpleName(), |
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155 newClassName, |
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156 toVMClassName(Bean.class), |
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157 toVMClassName(field.getDeclaringClass()), |
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158 "f_"+field.getType().getName(), |
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159 field.getName() ); |
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160 else |
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161 opt = AccessorInjector.prepare( field.getDeclaringClass(), |
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162 fieldTemplateName+"Ref", |
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163 newClassName, |
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164 toVMClassName(Bean.class), |
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165 toVMClassName(field.getDeclaringClass()), |
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166 toVMClassName(Ref.class), |
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167 toVMClassName(field.getType()), |
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168 toVMTypeName(Ref.class), |
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169 toVMTypeName(field.getType()), |
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170 "f_ref", |
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171 field.getName() ); |
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172 |
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173 if(opt==null) |
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174 return null; |
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175 |
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176 Accessor<B,V> acc = instanciate(opt); |
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177 if(acc!=null) |
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178 logger.log(Level.FINE,"Using optimized Accessor for "+field); |
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179 return acc; |
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180 } |
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181 |
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182 private static <B,V> Accessor<B,V> instanciate(Class opt) { |
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183 try { |
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184 return (Accessor<B,V>)opt.newInstance(); |
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185 } catch (InstantiationException e) { |
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186 logger.log(Level.INFO,"failed to load an optimized Accessor",e); |
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187 } catch (IllegalAccessException e) { |
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188 logger.log(Level.INFO,"failed to load an optimized Accessor",e); |
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189 } catch (SecurityException e) { |
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190 logger.log(Level.INFO,"failed to load an optimized Accessor",e); |
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191 } |
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192 return null; |
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193 } |
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194 } |