bundles/org.simantics.document.ui/src/org/simantics/document/ui/actions/NewFileDocument.java

   1 package org.simantics.document.ui.actions;
   2
   3 import java.io.IOException;
   4
   5 import org.simantics.Simantics;
   6 import org.simantics.db.ReadGraph;
   7 import org.simantics.db.Resource;
   8 import org.simantics.db.WriteGraph;
   9 import org.simantics.db.common.request.WriteRequest;
  10 import org.simantics.db.common.utils.NameUtils;
  11 import org.simantics.db.exception.DatabaseException;
  12 import org.simantics.db.layer0.adapter.ActionFactory;
  13 import org.simantics.document.DocumentResource;
  14 import org.simantics.graphfile.util.GraphFileUtil;
  15 import org.simantics.layer0.Layer0;
  16
  17 public class NewFileDocument implements ActionFactory {
  18         Resource relation;
  19         String defaultName;
  20
  21         public NewFileDocument(ReadGraph graph, String relationUri, String defaultName) throws DatabaseException {
  22                 relation = graph.getResource(relationUri);
  23                 this.defaultName = defaultName;
  24         }
  25
  26         @Override
  27         public Runnable create(Object target) {
  28
  29                 if(!(target instanceof Resource))
  30                         return null;
  31
  32                 final Resource resource = (Resource)target;
  33
  34                 return new Runnable() {
  35                         @Override
  36                         public void run() {
  37                                 Simantics.getSession().asyncRequest(new WriteRequest() {
  38
  39                                         @Override
  40                                         public void perform(WriteGraph graph) throws DatabaseException {
  41                                                 create(graph, resource, relation, defaultName);
  42                                         }
  43
  44                                 });
  45                         }
  46                 };
  47         }
  48
  49         public static Resource create(WriteGraph graph, Resource resource, Resource relation, String defaultName) throws DatabaseException {
  50
  51                 graph.markUndoPoint();
  52
  53                 Layer0 l0 = Layer0.getInstance(graph);
  54
  55                 String name = NameUtils.findFreshName(graph, defaultName, resource, relation);
  56                 DocumentResource doc = DocumentResource.getInstance(graph);
  57
  58                 Resource fileResource = graph.newResource();
  59                 graph.claim(fileResource, l0.InstanceOf, doc.FileDocument);
  60                 graph.claimLiteral(fileResource, l0.HasName, name);
  61                 graph.claim(resource, relation, fileResource);
  62                 try {
  63                         GraphFileUtil.writeDataToGraph(graph, new byte[0], fileResource);
  64                 } catch (IOException e) {
  65                         throw new DatabaseException(e);
  66                 }
  67
  68                 return fileResource;
  69
  70         }
  71
  72 }