bundles/org.simantics.db.services/src/org/simantics/db/services/adaption/reflection/ReflectionAdapter2.java

   1 /*******************************************************************************\r
   2  * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
   3  * in Industry THTH ry.\r
   4  * All rights reserved. This program and the accompanying materials\r
   5  * are made available under the terms of the Eclipse Public License v1.0\r
   6  * which accompanies this distribution, and is available at\r
   7  * http://www.eclipse.org/legal/epl-v10.html\r
   8  *\r
   9  * Contributors:\r
  10  *     VTT Technical Research Centre of Finland - initial API and implementation\r
  11  *******************************************************************************/\r
  12 package org.simantics.db.services.adaption.reflection;\r
  13 \r
  14 import java.lang.reflect.Constructor;\r
  15 import java.lang.reflect.InvocationTargetException;\r
  16 import java.util.Arrays;\r
  17 \r
  18 import org.simantics.db.AsyncReadGraph;\r
  19 import org.simantics.db.Resource;\r
  20 import org.simantics.db.ReadGraph;\r
  21 import org.simantics.db.adaption.Adapter;\r
  22 import org.simantics.db.common.request.ReadRequest;\r
  23 import org.simantics.db.exception.DatabaseException;\r
  24 import org.simantics.db.procedure.AsyncProcedure;\r
  25 \r
  26 public class ReflectionAdapter2<T> implements Adapter<T, Resource> {\r
  27 \r
  28         Constructor<? extends T> constructor;\r
  29         IDynamicAdapter2[] parameters;\r
  30         \r
  31         public ReflectionAdapter2(Class<? extends T> clazz, IDynamicAdapter2 ... parameters) throws SecurityException, NoSuchMethodException, DatabaseException {\r
  32                 Class<?>[] parameterTypes = new Class<?>[parameters.length];\r
  33                 for(int i=0;i<parameters.length;++i)\r
  34                         parameterTypes[i] = parameters[i].getType();\r
  35                 this.constructor = clazz.getConstructor(parameterTypes);\r
  36                 this.parameters = parameters;\r
  37         }\r
  38         \r
  39     @Override\r
  40     public void adapt(AsyncReadGraph g, final Resource source, final Resource r, final AsyncProcedure<T> procedure) {\r
  41 \r
  42         if(parameters.length == 0) {\r
  43             \r
  44 //            System.out.println("ReflectionAdapter2 " + ReflectionAdapter2.this);\r
  45 \r
  46             try {\r
  47                 procedure.execute(g, constructor.newInstance());\r
  48             } catch (IllegalArgumentException e) {\r
  49                 procedure.exception(g, e);\r
  50                 e.printStackTrace();\r
  51             } catch (InstantiationException e) {\r
  52                 procedure.exception(g, e);\r
  53                 e.printStackTrace();\r
  54             } catch (IllegalAccessException e) {\r
  55                 procedure.exception(g, e);\r
  56                 e.printStackTrace();\r
  57             } catch (InvocationTargetException e) {\r
  58                 procedure.exception(g, e.getCause());\r
  59                 e.getCause().printStackTrace();\r
  60             }\r
  61             \r
  62         } else if( parameters.length == 1 && parameters[0] instanceof ThisResource2) {\r
  63 \r
  64             try {\r
  65                 procedure.execute(g, constructor.newInstance(r));\r
  66             } catch (IllegalArgumentException e) {\r
  67                 procedure.exception(g, e);\r
  68                 e.printStackTrace();\r
  69             } catch (InstantiationException e) {\r
  70                 procedure.exception(g, e);\r
  71                 e.printStackTrace();\r
  72             } catch (IllegalAccessException e) {\r
  73                 procedure.exception(g, e);\r
  74                 e.printStackTrace();\r
  75             } catch (InvocationTargetException e) {\r
  76                 procedure.exception(g, e.getCause());\r
  77                 e.getCause().printStackTrace();\r
  78             }\r
  79                 \r
  80         } else {\r
  81         \r
  82             g.asyncRequest(new ReadRequest() {\r
  83     \r
  84                 @Override\r
  85                 public void run(ReadGraph graph) throws DatabaseException {\r
  86                         \r
  87                     Object[] args = new Object[parameters.length];\r
  88                     try {\r
  89                         for(int i=0;i<parameters.length;++i)\r
  90                                 args[i] = parameters[i].adapt(graph, r);\r
  91                         procedure.execute(graph, constructor.newInstance(args));\r
  92                                 } catch (IllegalArgumentException e) {\r
  93                                     procedure.exception(graph, e);\r
  94                                         e.printStackTrace();\r
  95                                 } catch (InstantiationException e) {\r
  96                         procedure.exception(graph, e);\r
  97                                         e.printStackTrace();\r
  98                                 } catch (IllegalAccessException e) {\r
  99                         procedure.exception(graph, e);\r
 100                                         e.printStackTrace();\r
 101                                 } catch (InvocationTargetException e) {\r
 102                         procedure.exception(graph, e.getCause());\r
 103                                         e.getCause().printStackTrace();\r
 104                                 } catch (DatabaseException e) {\r
 105                         procedure.exception(graph, e);\r
 106                                         e.printStackTrace();\r
 107                                 }\r
 108                 }\r
 109                 \r
 110                 @Override\r
 111                 public String toString() {\r
 112                         return "ReflectionAdapter$1" + constructor + "$" + Arrays.toString(parameters);\r
 113                 }\r
 114                 \r
 115             });\r
 116         \r
 117         }\r
 118         \r
 119     }\r
 120     \r
 121     @Override\r
 122     public String toString() {\r
 123         return "ReflectionAdapter for " + constructor.getName();\r
 124     }\r
 125 \r
 126 }\r