bundles/org.simantics.db.common/src/org/simantics/db/common/request/ResourceAsyncRead.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.common.request;
  13
  14 import org.simantics.db.AsyncRequestProcessor;
  15 import org.simantics.db.RequestProcessor;
  16 import org.simantics.db.Resource;
  17 import org.simantics.db.exception.DatabaseException;
  18 import org.simantics.db.procedure.AsyncListener;
  19 import org.simantics.db.procedure.AsyncProcedure;
  20 import org.simantics.db.procedure.Listener;
  21 import org.simantics.db.procedure.Procedure;
  22 import org.simantics.db.procedure.SyncListener;
  23 import org.simantics.db.procedure.SyncProcedure;
  24 import org.simantics.db.request.AsyncRead;
  25 import org.simantics.db.request.ReadInterface;
  26
  27 public abstract class ResourceAsyncRead<T> implements AsyncRead<T>, ReadInterface<T> {
  28
  29     final protected Resource resource;
  30
  31     @Override
  32     final public int hashCode() {
  33         return resource.hashCode();
  34     }
  35
  36     @Override
  37     public int threadHash() {
  38         return resource.getThreadHash();
  39     }
  40
  41     @Override
  42     final public boolean equals(Object object) {
  43         if (this == object)
  44             return true;
  45         else if (object == null)
  46             return false;
  47         else if (getClass() != object.getClass())
  48             return false;
  49         ResourceAsyncRead<?> r = (ResourceAsyncRead<?>) object;
  50         return resource.equals(r.resource);
  51     }
  52
  53     @Override
  54     public int getFlags() {
  55         return 0;
  56     }
  57
  58     public ResourceAsyncRead(Resource resource) {
  59         if(resource == null) throw new IllegalArgumentException("Null resource.");
  60         this.resource = resource;
  61     }
  62
  63     @Override
  64     public void request(AsyncRequestProcessor processor, AsyncProcedure<T> procedure) {
  65         processor.asyncRequest(this, procedure);
  66     }
  67
  68     @Override
  69     public void request(AsyncRequestProcessor processor, Procedure<T> procedure) {
  70         processor.asyncRequest(this, procedure);
  71     }
  72
  73     @Override
  74     public void request(AsyncRequestProcessor processor, SyncProcedure<T> procedure) {
  75         processor.asyncRequest(this, procedure);
  76     }
  77
  78     @Override
  79     public void request(AsyncRequestProcessor processor, AsyncListener<T> procedure) {
  80         processor.asyncRequest(this, procedure);
  81     }
  82
  83     @Override
  84     public void request(AsyncRequestProcessor processor, Listener<T> procedure) {
  85         processor.asyncRequest(this, procedure);
  86     }
  87
  88     @Override
  89     public void request(AsyncRequestProcessor processor, SyncListener<T> procedure) {
  90         processor.asyncRequest(this, procedure);
  91     }
  92
  93     @Override
  94     public T request(RequestProcessor processor) throws DatabaseException {
  95         return processor.syncRequest(this);
  96     }
  97
  98
  99 }