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

   1 /*******************************************************************************
   2  * Copyright (c) 2007, 2010 Association for Decentralized Information Management
   3  * in Industry THTH ry.
   4  * All rights reserved. This program and the accompanying materials
   5  * are made available under the terms of the Eclipse Public License v1.0
   6  * which accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *     VTT Technical Research Centre of Finland - initial API and implementation
  11  *******************************************************************************/
  12 package org.simantics.db.services.adaption.reflection;
  13
  14 import java.lang.reflect.Constructor;
  15 import java.lang.reflect.InvocationTargetException;
  16 import java.util.Arrays;
  17
  18 import org.simantics.db.AsyncReadGraph;
  19 import org.simantics.db.Resource;
  20 import org.simantics.db.adaption.Adapter;
  21 import org.simantics.db.exception.DatabaseException;
  22 import org.simantics.db.procedure.AsyncProcedure;
  23 import org.simantics.db.request.AsyncRead;
  24
  25 public class ReflectionAdapter2<T> implements Adapter<T, Resource> {
  26
  27         Constructor<? extends T> constructor;
  28         IDynamicAdapter2[] parameters;
  29
  30         public ReflectionAdapter2(Class<? extends T> clazz, IDynamicAdapter2 ... parameters) throws SecurityException, NoSuchMethodException, DatabaseException {
  31                 Class<?>[] parameterTypes = new Class<?>[parameters.length];
  32                 for(int i=0;i<parameters.length;++i)
  33                         parameterTypes[i] = parameters[i].getType();
  34                 this.constructor = clazz.getConstructor(parameterTypes);
  35                 this.parameters = parameters;
  36         }
  37
  38     @Override
  39     public void adapt(AsyncReadGraph g, final Resource source, final Resource r, final AsyncProcedure<T> procedure) {
  40
  41         if(parameters.length == 0) {
  42
  43 //            System.out.println("ReflectionAdapter2 " + ReflectionAdapter2.this);
  44
  45             try {
  46                 procedure.execute(g, constructor.newInstance());
  47             } catch (IllegalArgumentException e) {
  48                 procedure.exception(g, e);
  49                 e.printStackTrace();
  50             } catch (InstantiationException e) {
  51                 procedure.exception(g, e);
  52                 e.printStackTrace();
  53             } catch (IllegalAccessException e) {
  54                 procedure.exception(g, e);
  55                 e.printStackTrace();
  56             } catch (InvocationTargetException e) {
  57                 procedure.exception(g, e.getCause());
  58                 e.getCause().printStackTrace();
  59             }
  60
  61         } else if( parameters.length == 1 && parameters[0] instanceof ThisResource2) {
  62
  63             try {
  64                 procedure.execute(g, constructor.newInstance(r));
  65             } catch (IllegalArgumentException e) {
  66                 procedure.exception(g, e);
  67                 e.printStackTrace();
  68             } catch (InstantiationException e) {
  69                 procedure.exception(g, e);
  70                 e.printStackTrace();
  71             } catch (IllegalAccessException e) {
  72                 procedure.exception(g, e);
  73                 e.printStackTrace();
  74             } catch (InvocationTargetException e) {
  75                 procedure.exception(g, e.getCause());
  76                 e.getCause().printStackTrace();
  77             }
  78
  79         } else {
  80
  81             g.asyncRequest(new AsyncRead() {
  82
  83                 @Override
  84                 public void perform(AsyncReadGraph graph, AsyncProcedure p) {
  85
  86                     Object[] args = new Object[parameters.length];
  87                     try {
  88                         for(int i=0;i<parameters.length;++i)
  89                             args[i] = parameters[i].adapt(graph, r);
  90                         p.execute(graph, constructor.newInstance(args));
  91                     } catch (IllegalArgumentException e) {
  92                         p.exception(g, e);
  93                         e.printStackTrace();
  94                     } catch (InstantiationException e) {
  95                         p.exception(g, e);
  96                         e.printStackTrace();
  97                     } catch (IllegalAccessException e) {
  98                         p.exception(g, e);
  99                         e.printStackTrace();
 100                     } catch (InvocationTargetException e) {
 101                         p.exception(g, e.getCause());
 102                         e.getCause().printStackTrace();
 103                     } catch (DatabaseException e) {
 104                         p.exception(g, e);
 105                         e.printStackTrace();
 106                     } catch (Throwable t) {
 107                         p.exception(g, t);
 108                         t.printStackTrace();
 109                     }
 110
 111                 }
 112
 113                 @Override
 114                 public String toString() {
 115                         return "ReflectionAdapter$1" + constructor + "$" + Arrays.toString(parameters);
 116                 }
 117
 118             }, procedure);
 119
 120         }
 121
 122     }
 123
 124     @Override
 125     public String toString() {
 126         return "ReflectionAdapter for " + constructor.getName();
 127     }
 128
 129 }