bundles/org.simantics.document.ontology/src/org/simantics/document/DocumentResource.java

   1 package org.simantics.document;
   2
   3 import org.simantics.db.RequestProcessor;
   4 import org.simantics.db.Resource;
   5 import org.simantics.db.ReadGraph;
   6 import org.simantics.db.request.Read;
   7 import org.simantics.db.Session;
   8 import org.simantics.db.exception.DatabaseException;
   9 import org.simantics.db.service.QueryControl;
  10
  11 public class DocumentResource {
  12
  13     public final Resource Document;
  14     public final Resource DocumentLibrary;
  15     public final Resource DocumentSettings;
  16     public final Resource DocumentSettings_n$marginBottom;
  17     public final Resource DocumentSettings_n$marginBottom_Inverse;
  18     public final Resource DocumentSettings_n$marginLeft;
  19     public final Resource DocumentSettings_n$marginLeft_Inverse;
  20     public final Resource DocumentSettings_n$marginRight;
  21     public final Resource DocumentSettings_n$marginRight_Inverse;
  22     public final Resource DocumentSettings_n$marginTop;
  23     public final Resource DocumentSettings_n$marginTop_Inverse;
  24     public final Resource DocumentTemplate;
  25     public final Resource DocumentTypeBinding;
  26     public final Resource DocumentTypeBinding_HasDocumentType;
  27     public final Resource DocumentTypeBinding_HasDocumentType_Inverse;
  28     public final Resource DocumentTypeBinding_HasType;
  29     public final Resource DocumentTypeBinding_HasType_Inverse;
  30     public final Resource DocumentTypeBinding_priority;
  31     public final Resource DocumentTypeBinding_priority_Inverse;
  32     public final Resource FileDocument;
  33     public final Resource Functions;
  34     public final Resource Functions_documentationRootVariable;
  35     public final Resource Functions_documentationText;
  36     public final Resource Functions_standardEditText;
  37     public final Resource HasDocument;
  38     public final Resource HasDocumentTemplate;
  39     public final Resource HasDocumentTemplate_Inverse;
  40     public final Resource HasDocument_Inverse;
  41     public final Resource HasDocumentation;
  42     public final Resource HasDocumentation_Inverse;
  43     public final Resource HasLibraryRelation;
  44     public final Resource HasNewerVersion;
  45     public final Resource HasOlderVersion;
  46     public final Resource HasReportFactory;
  47     public final Resource HasReportFactory_Inverse;
  48     public final Resource HasUrl;
  49     public final Resource HasUrl_Inverse;
  50     public final Resource HasVersionType;
  51     public final Resource PlainTextDocument;
  52     public final Resource PlainTextDocument_text;
  53     public final Resource PlainTextDocument_text_Inverse;
  54     public final Resource PlainTextFileDocument;
  55     public final Resource PlainTextFileDocument_FilePath;
  56     public final Resource PlainTextFileDocument_filePath;
  57     public final Resource PlainTextFileDocument_filePath_Inverse;
  58     @Deprecated public final Resource Report;
  59     public final Resource Scenegraph;
  60     public final Resource ScenegraphDocument;
  61     public final Resource ScenegraphDocument_scenegraph;
  62     public final Resource ScenegraphDocument_scenegraph_Inverse;
  63     public final Resource Scenegraph_CategoryHidden;
  64     public final Resource Scenegraph_Composite;
  65     public final Resource Scenegraph_Diagram;
  66     public final Resource Scenegraph_Diagram_path;
  67     public final Resource Scenegraph_Diagram_path_Inverse;
  68     public final Resource Scenegraph_Node;
  69     public final Resource Scenegraph_Node_editText;
  70     public final Resource Scenegraph_Node_editText_Inverse;
  71     public final Resource Scenegraph_Node_printInPDF;
  72     public final Resource Scenegraph_Node_printInPDF_Inverse;
  73     public final Resource Scenegraph_ParameterType;
  74     public final Resource Scenegraph_Wiki;
  75     public final Resource Scenegraph_Wiki_text;
  76     public final Resource Scenegraph_Wiki_text_Inverse;
  77     public final Resource UrlDocument;
  78     public final Resource WikiDocument;
  79     public final Resource WikiDocument_WikiDocumentBinding;
  80     public final Resource WikiDocument_WikiDocumentTemplate;
  81     public final Resource WikiDocument_WikiDocumentTemplate_Header;
  82     public final Resource WikiDocument_WikiDocumentTemplate_User;
  83     public final Resource WikiDocument_WikiDocumentTemplate_UserDocumentation;
  84     public final Resource WikiDocument_WikiDocumentTemplate_UserDocumentation_Inverse;
  85     public final Resource WikiDocument_WikiText;
  86     public final Resource WikiDocument_wikiText;
  87     public final Resource WikiDocument_wikiText_Inverse;
  88     public final Resource cssDocument;
  89     public final Resource cssDocument_Inverse;
  90     public final Resource documentSettings;
  91     public final Resource documentSettings_Inverse;
  92
  93     public static class URIs {
  94         public static final String Document = "http://www.simantics.org/Document-1.2/Document";
  95         public static final String DocumentLibrary = "http://www.simantics.org/Document-1.2/DocumentLibrary";
  96         public static final String DocumentSettings = "http://www.simantics.org/Document-1.2/DocumentSettings";
  97         public static final String DocumentSettings_n$marginBottom = "http://www.simantics.org/Document-1.2/DocumentSettings/n-marginBottom";
  98         public static final String DocumentSettings_n$marginBottom_Inverse = "http://www.simantics.org/Document-1.2/DocumentSettings/n-marginBottom/Inverse";
  99         public static final String DocumentSettings_n$marginLeft = "http://www.simantics.org/Document-1.2/DocumentSettings/n-marginLeft";
 100         public static final String DocumentSettings_n$marginLeft_Inverse = "http://www.simantics.org/Document-1.2/DocumentSettings/n-marginLeft/Inverse";
 101         public static final String DocumentSettings_n$marginRight = "http://www.simantics.org/Document-1.2/DocumentSettings/n-marginRight";
 102         public static final String DocumentSettings_n$marginRight_Inverse = "http://www.simantics.org/Document-1.2/DocumentSettings/n-marginRight/Inverse";
 103         public static final String DocumentSettings_n$marginTop = "http://www.simantics.org/Document-1.2/DocumentSettings/n-marginTop";
 104         public static final String DocumentSettings_n$marginTop_Inverse = "http://www.simantics.org/Document-1.2/DocumentSettings/n-marginTop/Inverse";
 105         public static final String DocumentTemplate = "http://www.simantics.org/Document-1.2/DocumentTemplate";
 106         public static final String DocumentTypeBinding = "http://www.simantics.org/Document-1.2/DocumentTypeBinding";
 107         public static final String DocumentTypeBinding_HasDocumentType = "http://www.simantics.org/Document-1.2/DocumentTypeBinding/HasDocumentType";
 108         public static final String DocumentTypeBinding_HasDocumentType_Inverse = "http://www.simantics.org/Document-1.2/DocumentTypeBinding/HasDocumentType/Inverse";
 109         public static final String DocumentTypeBinding_HasType = "http://www.simantics.org/Document-1.2/DocumentTypeBinding/HasType";
 110         public static final String DocumentTypeBinding_HasType_Inverse = "http://www.simantics.org/Document-1.2/DocumentTypeBinding/HasType/Inverse";
 111         public static final String DocumentTypeBinding_priority = "http://www.simantics.org/Document-1.2/DocumentTypeBinding/priority";
 112         public static final String DocumentTypeBinding_priority_Inverse = "http://www.simantics.org/Document-1.2/DocumentTypeBinding/priority/Inverse";
 113         public static final String FileDocument = "http://www.simantics.org/Document-1.2/FileDocument";
 114         public static final String Functions = "http://www.simantics.org/Document-1.2/Functions";
 115         public static final String Functions_documentationRootVariable = "http://www.simantics.org/Document-1.2/Functions/documentationRootVariable";
 116         public static final String Functions_documentationText = "http://www.simantics.org/Document-1.2/Functions/documentationText";
 117         public static final String Functions_standardEditText = "http://www.simantics.org/Document-1.2/Functions/standardEditText";
 118         public static final String HasDocument = "http://www.simantics.org/Document-1.2/HasDocument";
 119         public static final String HasDocumentTemplate = "http://www.simantics.org/Document-1.2/HasDocumentTemplate";
 120         public static final String HasDocumentTemplate_Inverse = "http://www.simantics.org/Document-1.2/HasDocumentTemplate/Inverse";
 121         public static final String HasDocument_Inverse = "http://www.simantics.org/Document-1.2/HasDocument/Inverse";
 122         public static final String HasDocumentation = "http://www.simantics.org/Document-1.2/HasDocumentation";
 123         public static final String HasDocumentation_Inverse = "http://www.simantics.org/Document-1.2/HasDocumentation/Inverse";
 124         public static final String HasLibraryRelation = "http://www.simantics.org/Document-1.2/HasLibraryRelation";
 125         public static final String HasNewerVersion = "http://www.simantics.org/Document-1.2/HasNewerVersion";
 126         public static final String HasOlderVersion = "http://www.simantics.org/Document-1.2/HasOlderVersion";
 127         public static final String HasReportFactory = "http://www.simantics.org/Document-1.2/HasReportFactory";
 128         public static final String HasReportFactory_Inverse = "http://www.simantics.org/Document-1.2/HasReportFactory/Inverse";
 129         public static final String HasUrl = "http://www.simantics.org/Document-1.2/HasUrl";
 130         public static final String HasUrl_Inverse = "http://www.simantics.org/Document-1.2/HasUrl/Inverse";
 131         public static final String HasVersionType = "http://www.simantics.org/Document-1.2/HasVersionType";
 132         public static final String PlainTextDocument = "http://www.simantics.org/Document-1.2/PlainTextDocument";
 133         public static final String PlainTextDocument_text = "http://www.simantics.org/Document-1.2/PlainTextDocument/text";
 134         public static final String PlainTextDocument_text_Inverse = "http://www.simantics.org/Document-1.2/PlainTextDocument/text/Inverse";
 135         public static final String PlainTextFileDocument = "http://www.simantics.org/Document-1.2/PlainTextFileDocument";
 136         public static final String PlainTextFileDocument_FilePath = "http://www.simantics.org/Document-1.2/PlainTextFileDocument/FilePath";
 137         public static final String PlainTextFileDocument_filePath = "http://www.simantics.org/Document-1.2/PlainTextFileDocument/filePath";
 138         public static final String PlainTextFileDocument_filePath_Inverse = "http://www.simantics.org/Document-1.2/PlainTextFileDocument/filePath/Inverse";
 139         @Deprecated public static final String Report = "http://www.simantics.org/Document-1.2/Report";
 140         public static final String Scenegraph = "http://www.simantics.org/Document-1.2/Scenegraph";
 141         public static final String ScenegraphDocument = "http://www.simantics.org/Document-1.2/ScenegraphDocument";
 142         public static final String ScenegraphDocument_scenegraph = "http://www.simantics.org/Document-1.2/ScenegraphDocument/scenegraph";
 143         public static final String ScenegraphDocument_scenegraph_Inverse = "http://www.simantics.org/Document-1.2/ScenegraphDocument/scenegraph/Inverse";
 144         public static final String Scenegraph_CategoryHidden = "http://www.simantics.org/Document-1.2/Scenegraph/CategoryHidden";
 145         public static final String Scenegraph_Composite = "http://www.simantics.org/Document-1.2/Scenegraph/Composite";
 146         public static final String Scenegraph_Diagram = "http://www.simantics.org/Document-1.2/Scenegraph/Diagram";
 147         public static final String Scenegraph_Diagram_path = "http://www.simantics.org/Document-1.2/Scenegraph/Diagram/path";
 148         public static final String Scenegraph_Diagram_path_Inverse = "http://www.simantics.org/Document-1.2/Scenegraph/Diagram/path/Inverse";
 149         public static final String Scenegraph_Node = "http://www.simantics.org/Document-1.2/Scenegraph/Node";
 150         public static final String Scenegraph_Node_editText = "http://www.simantics.org/Document-1.2/Scenegraph/Node/editText";
 151         public static final String Scenegraph_Node_editText_Inverse = "http://www.simantics.org/Document-1.2/Scenegraph/Node/editText/Inverse";
 152         public static final String Scenegraph_Node_printInPDF = "http://www.simantics.org/Document-1.2/Scenegraph/Node/printInPDF";
 153         public static final String Scenegraph_Node_printInPDF_Inverse = "http://www.simantics.org/Document-1.2/Scenegraph/Node/printInPDF/Inverse";
 154         public static final String Scenegraph_ParameterType = "http://www.simantics.org/Document-1.2/Scenegraph/ParameterType";
 155         public static final String Scenegraph_Wiki = "http://www.simantics.org/Document-1.2/Scenegraph/Wiki";
 156         public static final String Scenegraph_Wiki_text = "http://www.simantics.org/Document-1.2/Scenegraph/Wiki/text";
 157         public static final String Scenegraph_Wiki_text_Inverse = "http://www.simantics.org/Document-1.2/Scenegraph/Wiki/text/Inverse";
 158         public static final String UrlDocument = "http://www.simantics.org/Document-1.2/UrlDocument";
 159         public static final String WikiDocument = "http://www.simantics.org/Document-1.2/WikiDocument";
 160         public static final String WikiDocument_WikiDocumentBinding = "http://www.simantics.org/Document-1.2/WikiDocument/WikiDocumentBinding";
 161         public static final String WikiDocument_WikiDocumentTemplate = "http://www.simantics.org/Document-1.2/WikiDocument/WikiDocumentTemplate";
 162         public static final String WikiDocument_WikiDocumentTemplate_Header = "http://www.simantics.org/Document-1.2/WikiDocument/WikiDocumentTemplate/Header";
 163         public static final String WikiDocument_WikiDocumentTemplate_User = "http://www.simantics.org/Document-1.2/WikiDocument/WikiDocumentTemplate/User";
 164         public static final String WikiDocument_WikiDocumentTemplate_UserDocumentation = "http://www.simantics.org/Document-1.2/WikiDocument/WikiDocumentTemplate/UserDocumentation";
 165         public static final String WikiDocument_WikiDocumentTemplate_UserDocumentation_Inverse = "http://www.simantics.org/Document-1.2/WikiDocument/WikiDocumentTemplate/UserDocumentation/Inverse";
 166         public static final String WikiDocument_WikiText = "http://www.simantics.org/Document-1.2/WikiDocument/WikiText";
 167         public static final String WikiDocument_wikiText = "http://www.simantics.org/Document-1.2/WikiDocument/wikiText";
 168         public static final String WikiDocument_wikiText_Inverse = "http://www.simantics.org/Document-1.2/WikiDocument/wikiText/Inverse";
 169         public static final String cssDocument = "http://www.simantics.org/Document-1.2/cssDocument";
 170         public static final String cssDocument_Inverse = "http://www.simantics.org/Document-1.2/cssDocument/Inverse";
 171         public static final String documentSettings = "http://www.simantics.org/Document-1.2/documentSettings";
 172         public static final String documentSettings_Inverse = "http://www.simantics.org/Document-1.2/documentSettings/Inverse";
 173     }
 174
 175     public static Resource getResourceOrNull(ReadGraph graph, String uri) {
 176         try {
 177             return graph.getResource(uri);
 178         } catch(DatabaseException e) {
 179             System.err.println(e.getMessage());
 180             return null;
 181         }
 182     }
 183
 184     public DocumentResource(ReadGraph graph) {
 185         Document = getResourceOrNull(graph, URIs.Document);
 186         DocumentLibrary = getResourceOrNull(graph, URIs.DocumentLibrary);
 187         DocumentSettings = getResourceOrNull(graph, URIs.DocumentSettings);
 188         DocumentSettings_n$marginBottom = getResourceOrNull(graph, URIs.DocumentSettings_n$marginBottom);
 189         DocumentSettings_n$marginBottom_Inverse = getResourceOrNull(graph, URIs.DocumentSettings_n$marginBottom_Inverse);
 190         DocumentSettings_n$marginLeft = getResourceOrNull(graph, URIs.DocumentSettings_n$marginLeft);
 191         DocumentSettings_n$marginLeft_Inverse = getResourceOrNull(graph, URIs.DocumentSettings_n$marginLeft_Inverse);
 192         DocumentSettings_n$marginRight = getResourceOrNull(graph, URIs.DocumentSettings_n$marginRight);
 193         DocumentSettings_n$marginRight_Inverse = getResourceOrNull(graph, URIs.DocumentSettings_n$marginRight_Inverse);
 194         DocumentSettings_n$marginTop = getResourceOrNull(graph, URIs.DocumentSettings_n$marginTop);
 195         DocumentSettings_n$marginTop_Inverse = getResourceOrNull(graph, URIs.DocumentSettings_n$marginTop_Inverse);
 196         DocumentTemplate = getResourceOrNull(graph, URIs.DocumentTemplate);
 197         DocumentTypeBinding = getResourceOrNull(graph, URIs.DocumentTypeBinding);
 198         DocumentTypeBinding_HasDocumentType = getResourceOrNull(graph, URIs.DocumentTypeBinding_HasDocumentType);
 199         DocumentTypeBinding_HasDocumentType_Inverse = getResourceOrNull(graph, URIs.DocumentTypeBinding_HasDocumentType_Inverse);
 200         DocumentTypeBinding_HasType = getResourceOrNull(graph, URIs.DocumentTypeBinding_HasType);
 201         DocumentTypeBinding_HasType_Inverse = getResourceOrNull(graph, URIs.DocumentTypeBinding_HasType_Inverse);
 202         DocumentTypeBinding_priority = getResourceOrNull(graph, URIs.DocumentTypeBinding_priority);
 203         DocumentTypeBinding_priority_Inverse = getResourceOrNull(graph, URIs.DocumentTypeBinding_priority_Inverse);
 204         FileDocument = getResourceOrNull(graph, URIs.FileDocument);
 205         Functions = getResourceOrNull(graph, URIs.Functions);
 206         Functions_documentationRootVariable = getResourceOrNull(graph, URIs.Functions_documentationRootVariable);
 207         Functions_documentationText = getResourceOrNull(graph, URIs.Functions_documentationText);
 208         Functions_standardEditText = getResourceOrNull(graph, URIs.Functions_standardEditText);
 209         HasDocument = getResourceOrNull(graph, URIs.HasDocument);
 210         HasDocumentTemplate = getResourceOrNull(graph, URIs.HasDocumentTemplate);
 211         HasDocumentTemplate_Inverse = getResourceOrNull(graph, URIs.HasDocumentTemplate_Inverse);
 212         HasDocument_Inverse = getResourceOrNull(graph, URIs.HasDocument_Inverse);
 213         HasDocumentation = getResourceOrNull(graph, URIs.HasDocumentation);
 214         HasDocumentation_Inverse = getResourceOrNull(graph, URIs.HasDocumentation_Inverse);
 215         HasLibraryRelation = getResourceOrNull(graph, URIs.HasLibraryRelation);
 216         HasNewerVersion = getResourceOrNull(graph, URIs.HasNewerVersion);
 217         HasOlderVersion = getResourceOrNull(graph, URIs.HasOlderVersion);
 218         HasReportFactory = getResourceOrNull(graph, URIs.HasReportFactory);
 219         HasReportFactory_Inverse = getResourceOrNull(graph, URIs.HasReportFactory_Inverse);
 220         HasUrl = getResourceOrNull(graph, URIs.HasUrl);
 221         HasUrl_Inverse = getResourceOrNull(graph, URIs.HasUrl_Inverse);
 222         HasVersionType = getResourceOrNull(graph, URIs.HasVersionType);
 223         PlainTextDocument = getResourceOrNull(graph, URIs.PlainTextDocument);
 224         PlainTextDocument_text = getResourceOrNull(graph, URIs.PlainTextDocument_text);
 225         PlainTextDocument_text_Inverse = getResourceOrNull(graph, URIs.PlainTextDocument_text_Inverse);
 226         PlainTextFileDocument = getResourceOrNull(graph, URIs.PlainTextFileDocument);
 227         PlainTextFileDocument_FilePath = getResourceOrNull(graph, URIs.PlainTextFileDocument_FilePath);
 228         PlainTextFileDocument_filePath = getResourceOrNull(graph, URIs.PlainTextFileDocument_filePath);
 229         PlainTextFileDocument_filePath_Inverse = getResourceOrNull(graph, URIs.PlainTextFileDocument_filePath_Inverse);
 230         Report = getResourceOrNull(graph, URIs.Report);
 231         Scenegraph = getResourceOrNull(graph, URIs.Scenegraph);
 232         ScenegraphDocument = getResourceOrNull(graph, URIs.ScenegraphDocument);
 233         ScenegraphDocument_scenegraph = getResourceOrNull(graph, URIs.ScenegraphDocument_scenegraph);
 234         ScenegraphDocument_scenegraph_Inverse = getResourceOrNull(graph, URIs.ScenegraphDocument_scenegraph_Inverse);
 235         Scenegraph_CategoryHidden = getResourceOrNull(graph, URIs.Scenegraph_CategoryHidden);
 236         Scenegraph_Composite = getResourceOrNull(graph, URIs.Scenegraph_Composite);
 237         Scenegraph_Diagram = getResourceOrNull(graph, URIs.Scenegraph_Diagram);
 238         Scenegraph_Diagram_path = getResourceOrNull(graph, URIs.Scenegraph_Diagram_path);
 239         Scenegraph_Diagram_path_Inverse = getResourceOrNull(graph, URIs.Scenegraph_Diagram_path_Inverse);
 240         Scenegraph_Node = getResourceOrNull(graph, URIs.Scenegraph_Node);
 241         Scenegraph_Node_editText = getResourceOrNull(graph, URIs.Scenegraph_Node_editText);
 242         Scenegraph_Node_editText_Inverse = getResourceOrNull(graph, URIs.Scenegraph_Node_editText_Inverse);
 243         Scenegraph_Node_printInPDF = getResourceOrNull(graph, URIs.Scenegraph_Node_printInPDF);
 244         Scenegraph_Node_printInPDF_Inverse = getResourceOrNull(graph, URIs.Scenegraph_Node_printInPDF_Inverse);
 245         Scenegraph_ParameterType = getResourceOrNull(graph, URIs.Scenegraph_ParameterType);
 246         Scenegraph_Wiki = getResourceOrNull(graph, URIs.Scenegraph_Wiki);
 247         Scenegraph_Wiki_text = getResourceOrNull(graph, URIs.Scenegraph_Wiki_text);
 248         Scenegraph_Wiki_text_Inverse = getResourceOrNull(graph, URIs.Scenegraph_Wiki_text_Inverse);
 249         UrlDocument = getResourceOrNull(graph, URIs.UrlDocument);
 250         WikiDocument = getResourceOrNull(graph, URIs.WikiDocument);
 251         WikiDocument_WikiDocumentBinding = getResourceOrNull(graph, URIs.WikiDocument_WikiDocumentBinding);
 252         WikiDocument_WikiDocumentTemplate = getResourceOrNull(graph, URIs.WikiDocument_WikiDocumentTemplate);
 253         WikiDocument_WikiDocumentTemplate_Header = getResourceOrNull(graph, URIs.WikiDocument_WikiDocumentTemplate_Header);
 254         WikiDocument_WikiDocumentTemplate_User = getResourceOrNull(graph, URIs.WikiDocument_WikiDocumentTemplate_User);
 255         WikiDocument_WikiDocumentTemplate_UserDocumentation = getResourceOrNull(graph, URIs.WikiDocument_WikiDocumentTemplate_UserDocumentation);
 256         WikiDocument_WikiDocumentTemplate_UserDocumentation_Inverse = getResourceOrNull(graph, URIs.WikiDocument_WikiDocumentTemplate_UserDocumentation_Inverse);
 257         WikiDocument_WikiText = getResourceOrNull(graph, URIs.WikiDocument_WikiText);
 258         WikiDocument_wikiText = getResourceOrNull(graph, URIs.WikiDocument_wikiText);
 259         WikiDocument_wikiText_Inverse = getResourceOrNull(graph, URIs.WikiDocument_wikiText_Inverse);
 260         cssDocument = getResourceOrNull(graph, URIs.cssDocument);
 261         cssDocument_Inverse = getResourceOrNull(graph, URIs.cssDocument_Inverse);
 262         documentSettings = getResourceOrNull(graph, URIs.documentSettings);
 263         documentSettings_Inverse = getResourceOrNull(graph, URIs.documentSettings_Inverse);
 264     }
 265
 266     public static DocumentResource getInstance(ReadGraph graph) {
 267         Session session = graph.getSession();
 268         DocumentResource ret = session.peekService(DocumentResource.class);
 269         if(ret == null) {
 270             QueryControl qc = graph.getService(QueryControl.class);
 271             ret = new DocumentResource(qc.getIndependentGraph(graph));
 272             session.registerService(DocumentResource.class, ret);
 273         }
 274         return ret;
 275     }
 276
 277     public static DocumentResource getInstance(RequestProcessor session) throws DatabaseException {
 278         DocumentResource ret = session.peekService(DocumentResource.class);
 279         if(ret == null) {
 280             ret = session.syncRequest(new Read<DocumentResource>() {
 281                 public DocumentResource perform(ReadGraph graph) throws DatabaseException {
 282                     QueryControl qc = graph.getService(QueryControl.class);
 283                     return new DocumentResource(qc.getIndependentGraph(graph));
 284                 }
 285             });
 286             session.registerService(DocumentResource.class, ret);
 287         }
 288         return ret;
 289     }
 290
 291 }
 292