1 /*******************************************************************************
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2 * Copyright (c) 2007, 2010 Association for Decentralized Information Management
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3 * in Industry THTH ry.
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4 * All rights reserved. This program and the accompanying materials
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5 * are made available under the terms of the Eclipse Public License v1.0
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6 * which accompanies this distribution, and is available at
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7 * http://www.eclipse.org/legal/epl-v10.html
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10 * VTT Technical Research Centre of Finland - initial API and implementation
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11 *******************************************************************************/
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12 package org.simantics.db;
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14 import org.simantics.utils.Container;
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17 * A Graph independent reference to a resource. These can be stored between
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18 * transactions and later used with any {@link RequestProcessor} or
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19 * {@link AsyncRequestProcessor} that originates from a Session with the same
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23 * Resources are considered implementation dependent. Therefore
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24 * <code>Resource</code> instances from different implementations of this
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25 * database connection API should not be used together.
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29 * This interface should not be implemented by clients.
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32 * @author Tuukka Lehtonen
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33 * @see AsyncReadGraph
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37 public interface Resource extends Container<Resource>, Comparable<Resource> {
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39 Resource[] NONE = new Resource[0];
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41 long getResourceId();
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43 int getThreadHash();
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45 boolean isPersistent();
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47 boolean equalsResource(Resource other);
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