bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/util/ClipboardUtils.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.layer0.util;
  13
  14 import java.io.File;
  15 import java.io.IOException;
  16 import java.util.ArrayList;
  17 import java.util.Collection;
  18 import java.util.Collections;
  19 import java.util.Map;
  20 import java.util.Set;
  21
  22 import org.simantics.databoard.adapter.AdaptException;
  23 import org.simantics.databoard.container.DataContainer;
  24 import org.simantics.databoard.container.DataContainers;
  25 import org.simantics.db.ReadGraph;
  26 import org.simantics.db.RequestProcessor;
  27 import org.simantics.db.Resource;
  28 import org.simantics.db.common.request.ResourceRead;
  29 import org.simantics.db.common.utils.Logger;
  30 import org.simantics.db.exception.DatabaseException;
  31 import org.simantics.db.layer0.adapter.PasteHandler;
  32 import org.simantics.db.layer0.internal.SimanticsInternal;
  33 import org.simantics.db.layer0.util.SimanticsClipboard.Representation;
  34 import org.simantics.db.layer0.variable.Variable;
  35 import org.simantics.db.request.Read;
  36 import org.simantics.graph.representation.TransferableGraph1;
  37 import org.simantics.utils.datastructures.hints.IHintContext.Key;
  38
  39 public class ClipboardUtils {
  40
  41         public static String HINT_TARGET_RESOURCE = "HINT_TARGET_RESOURCE";
  42
  43         public static <T> T accept(Set<Representation> set, Key key) throws DatabaseException {
  44                 return accept(set, key, Collections.emptyMap());
  45         }
  46
  47         public static <T> T accept(Set<Representation> set, Key key, Map<String,Object> hints) throws DatabaseException {
  48                 for(Representation r : set) if(r.getKey().equals(key)) return r.getValue(SimanticsInternal.getSession(), hints);
  49                 return null;
  50         }
  51
  52         public static <T> T accept(RequestProcessor processor, Set<Representation> set, Key key) throws DatabaseException {
  53                 return accept(processor, set, key, Collections.emptyMap());
  54         }
  55
  56         public static <T> T accept(RequestProcessor processor, Set<Representation> set, Key key, Map<String,Object> hints) throws DatabaseException {
  57                 for(Representation r : set) if(r.getKey().equals(key)) return r.getValue(processor, hints);
  58                 return null;
  59         }
  60
  61         public static <T> T accept(ReadGraph graph, Set<Representation> set, Key key) throws DatabaseException {
  62                 return accept(graph, set, key, Collections.<String, Object>emptyMap());
  63         }
  64
  65         public static <T> T accept(ReadGraph graph, Set<Representation> set, Key key, Map<String,Object> hints) throws DatabaseException {
  66                 for(Representation r : set) if(r.getKey().equals(key)) return r.getValue(graph, hints);
  67                 return null;
  68         }
  69
  70         public static <T> T acceptPossible(ReadGraph graph, Key key) throws DatabaseException {
  71                 return acceptPossible(graph, key, Collections.emptyMap());
  72         }
  73
  74         public static <T> T acceptPossible(ReadGraph graph, Key key, Map<String,Object> hints) throws DatabaseException {
  75             Collection<T> results = accept(graph, key, hints);
  76             if(results.size() == 1) return results.iterator().next();
  77             else return null;
  78         }
  79
  80     @SuppressWarnings("unchecked")
  81     public static <T> Collection<T> accept(ReadGraph graph, Key key, Map<String,Object> hints) throws DatabaseException {
  82         ArrayList<T> result = new ArrayList<T>();
  83         for(Set<Representation> rs : SimanticsInternal.getClipboard().getContents()) {
  84             for(Representation r : rs) {
  85                 if(r.getKey().equals(key)) {
  86                     result.add((T)r.getValue(graph, hints));
  87                     continue;
  88                 }
  89             }
  90         }
  91         return result;
  92     }
  93
  94         public static SimanticsClipboard fileClipboard(String fileName) throws IOException {
  95
  96                 DataContainer container = DataContainers.readFile(new File(fileName));
  97
  98                 try {
  99                         Representation tgRep = new TGRepresentation((TransferableGraph1)container.content.getValue(TransferableGraph1.BINDING));
 100                         Representation dcRep = new DataContainerRepresentation(container);
 101                         return SimanticsClipboardImpl.make(dcRep, tgRep);
 102                 } catch (AdaptException e) {
 103                         Logger.defaultLogError(e);
 104                         return SimanticsClipboardImpl.EMPTY;
 105                 }
 106
 107
 108         }
 109
 110         public static Representation createTransferableGraph(Resource ... resources) {
 111                 return new TGRepresentation(resources);
 112         }
 113
 114         public static Representation createTransferableGraph(TransferableGraphConfiguration2 configuration) {
 115                 return new TGRepresentation(configuration);
 116         }
 117
 118         public static Representation createTransferableGraph(boolean ignoreVirtualResources, Resource ... resources) {
 119                 return new TGRepresentation(ignoreVirtualResources, resources);
 120         }
 121
 122         public static Representation createVariable(String uri) {
 123                 return new VariableRepresentation(uri);
 124         }
 125
 126         public static Representation createVariable(RequestProcessor processor, final Variable var) {
 127
 128                 try {
 129
 130                         return new VariableRepresentation(processor.syncRequest(new Read<String>() {
 131
 132                                 @Override
 133                                 public String perform(ReadGraph graph) throws DatabaseException {
 134                                         return var.getURI(graph);
 135                                 }
 136
 137                         }));
 138
 139                 } catch (DatabaseException e) {
 140                         Logger.defaultLogError(e);
 141                 }
 142
 143                 return null;
 144
 145         }
 146
 147     public static Representation createCopyResources(final Collection<Resource> resources) {
 148         return new ResourceCopyRepresentation(resources);
 149     }
 150
 151     public static Representation createCutResources(final Collection<Resource> resources) {
 152         return new ResourceCutRepresentation(resources);
 153     }
 154
 155     public static PasteHandler pasteHandler(Resource resource) throws DatabaseException {
 156         return SimanticsInternal.sync(new ResourceRead<PasteHandler>(resource) {
 157
 158                         @Override
 159                         public PasteHandler perform(ReadGraph graph) throws DatabaseException {
 160                                 return graph.adapt(resource, PasteHandler.class);
 161                         }
 162
 163         });
 164     }
 165
 166 }