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.ReadGraph;
  21 import org.simantics.db.adaption.Adapter;
  22 import org.simantics.db.common.request.ReadRequest;
  23 import org.simantics.db.exception.DatabaseException;
  24 import org.simantics.db.procedure.AsyncProcedure;
  25
  26 public class ReflectionAdapter2<T> implements Adapter<T, Resource> {
  27
  28         Constructor<? extends T> constructor;
  29         IDynamicAdapter2[] parameters;
  30
  31         public ReflectionAdapter2(Class<? extends T> clazz, IDynamicAdapter2 ... parameters) throws SecurityException, NoSuchMethodException, DatabaseException {
  32                 Class<?>[] parameterTypes = new Class<?>[parameters.length];
  33                 for(int i=0;i<parameters.length;++i)
  34                         parameterTypes[i] = parameters[i].getType();
  35                 this.constructor = clazz.getConstructor(parameterTypes);
  36                 this.parameters = parameters;
  37         }
  38
  39     @Override
  40     public void adapt(AsyncReadGraph g, final Resource source, final Resource r, final AsyncProcedure<T> procedure) {
  41
  42         if(parameters.length == 0) {
  43
  44 //            System.out.println("ReflectionAdapter2 " + ReflectionAdapter2.this);
  45
  46             try {
  47                 procedure.execute(g, constructor.newInstance());
  48             } catch (IllegalArgumentException e) {
  49                 procedure.exception(g, e);
  50                 e.printStackTrace();
  51             } catch (InstantiationException e) {
  52                 procedure.exception(g, e);
  53                 e.printStackTrace();
  54             } catch (IllegalAccessException e) {
  55                 procedure.exception(g, e);
  56                 e.printStackTrace();
  57             } catch (InvocationTargetException e) {
  58                 procedure.exception(g, e.getCause());
  59                 e.getCause().printStackTrace();
  60             }
  61
  62         } else if( parameters.length == 1 && parameters[0] instanceof ThisResource2) {
  63
  64             try {
  65                 procedure.execute(g, constructor.newInstance(r));
  66             } catch (IllegalArgumentException e) {
  67                 procedure.exception(g, e);
  68                 e.printStackTrace();
  69             } catch (InstantiationException e) {
  70                 procedure.exception(g, e);
  71                 e.printStackTrace();
  72             } catch (IllegalAccessException e) {
  73                 procedure.exception(g, e);
  74                 e.printStackTrace();
  75             } catch (InvocationTargetException e) {
  76                 procedure.exception(g, e.getCause());
  77                 e.getCause().printStackTrace();
  78             }
  79
  80         } else {
  81
  82             g.asyncRequest(new ReadRequest() {
  83
  84                 @Override
  85                 public void run(ReadGraph graph) throws DatabaseException {
  86
  87                     Object[] args = new Object[parameters.length];
  88                     try {
  89                         for(int i=0;i<parameters.length;++i)
  90                                 args[i] = parameters[i].adapt(graph, r);
  91                         procedure.execute(g, constructor.newInstance(args));
  92                                 } catch (IllegalArgumentException e) {
  93                                     procedure.exception(g, e);
  94                                         e.printStackTrace();
  95                                 } catch (InstantiationException e) {
  96                         procedure.exception(g, e);
  97                                         e.printStackTrace();
  98                                 } catch (IllegalAccessException e) {
  99                         procedure.exception(g, e);
 100                                         e.printStackTrace();
 101                                 } catch (InvocationTargetException e) {
 102                         procedure.exception(g, e.getCause());
 103                                         e.getCause().printStackTrace();
 104                                 } catch (DatabaseException e) {
 105                         procedure.exception(g, e);
 106                                         e.printStackTrace();
 107                                 } catch (Throwable t) {
 108                                     procedure.exception(g, t);
 109                                     t.printStackTrace();
 110                                 }
 111                 }
 112
 113                 @Override
 114                 public String toString() {
 115                         return "ReflectionAdapter$1" + constructor + "$" + Arrays.toString(parameters);
 116                 }
 117
 118             });
 119
 120         }
 121
 122     }
 123
 124     @Override
 125     public String toString() {
 126         return "ReflectionAdapter for " + constructor.getName();
 127     }
 128
 129 }