1 /*******************************************************************************
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2 * Copyright (c) 2007, 2012 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.browsing.ui.swt;
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14 import java.util.Collections;
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15 import java.util.Set;
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17 import org.simantics.browsing.ui.BuiltinKeys;
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18 import org.simantics.browsing.ui.NodeContext;
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19 import org.simantics.browsing.ui.NodeContext.PrimitiveQueryKey;
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20 import org.simantics.browsing.ui.graph.impl.CommonKeys;
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21 import org.simantics.browsing.ui.graph.impl.LazyGraphQueryProcessor;
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22 import org.simantics.db.ReadGraph;
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23 import org.simantics.db.Resource;
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24 import org.simantics.db.exception.DatabaseException;
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25 import org.simantics.ui.utils.ResourceAdaptionUtils;
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26 import org.simantics.utils.Container;
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28 public class TypesQueryProcessor extends LazyGraphQueryProcessor<Set<Resource>> {
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31 public String toString() {
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36 public Object getIdentifier() {
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37 return CommonKeys.TYPES;
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41 protected Set<Resource> initial() {
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42 return Collections.emptySet();
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46 protected Set<Resource> compute(ReadGraph graph, NodeContext context, PrimitiveQueryKey<Container<Set<Resource>>> key) throws DatabaseException {
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47 Object input = context.getConstant(BuiltinKeys.INPUT);
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48 Resource resource = ResourceAdaptionUtils.toSingleResource(input);
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49 if(resource != null) {
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50 return graph.getTypes(resource);
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52 return Collections.emptySet();
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