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.common;
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14 import org.simantics.databoard.binding.Binding;
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15 import org.simantics.db.VirtualGraphContext;
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16 import org.simantics.db.VirtualGraphSource;
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17 import org.simantics.utils.datastructures.BijectionMap;
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18 import org.simantics.utils.datastructures.Pair;
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20 public abstract class VirtualGraphObjectSource implements VirtualGraphSource {
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22 private BijectionMap<Object, Integer> hash = new BijectionMap<Object, Integer>();
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24 class ResourceObject {
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26 public ResourceObject(int id) {
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30 public int hashCode() {
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34 public boolean equals(Object object) {
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37 else if (object == null)
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39 else if (ResourceObject.class != object.getClass())
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41 ResourceObject r = (ResourceObject)object;
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46 // protected void invalidate(VirtualGraphContext context, Object subject, Object predicate) {
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47 // context.invalidate(getOrCreate(context, subject), getOrCreate(context, predicate));
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50 // protected Object getObject(VirtualGraphContext context, org.simantics.db.Resource resource) {
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51 // int id = context.getIndex(resource);
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52 // Object result = new Resource(id);
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53 // hash.map(result, id);
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57 // private int getOrCreate(VirtualGraphContext context, Object object) {
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58 // if(object instanceof org.simantics.db.Resource) return context.getIndex((org.simantics.db.Resource)object);
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59 // Integer value = hash.getRight(object);
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60 // if(value == null) {
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61 // value = context.newResource();
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62 // hash.map(object, value);
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67 private Object existingOrResource(VirtualGraphContext context, int id) {
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68 Object value = hash.getLeft(id);
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69 if(value == null) return context.getResource(id);
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74 // final public int[] getStatements(VirtualGraphContext context, int resource) {
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75 // Object[] stms = getStatements(existingOrResource(context, resource));
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76 // int[] result = new int[stms.length];
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77 // for(int i=0;i<stms.length;i++) result[i] = getOrCreate(context, stms[i]);
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82 // final public Pair<Object, Binding> getValue(VirtualGraphContext context, int resource) {
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83 // return getValue(context, existingOrResource(context, resource));
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86 // public org.simantics.db.Resource getResource(VirtualGraphContext context, Object virtual) {
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87 // return (org.simantics.db.Resource)context.getResource(getOrCreate(context, virtual));
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90 abstract public Object[] getStatements(Object resource);
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91 abstract public Pair<Object, Binding> getValue(VirtualGraphContext context, Object resource);
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