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