bundles/org.simantics.graph.compiler/src/org/simantics/graph/compiler/internal/resourceFiles/resourceFile.ftl

   1 package ${packageName};\r
   2 \r
   3 import org.simantics.db.RequestProcessor;\r
   4 import org.simantics.db.Resource;\r
   5 import org.simantics.db.ReadGraph;\r
   6 import org.simantics.db.request.Read;\r
   7 import org.simantics.db.Session;\r
   8 import org.simantics.db.exception.DatabaseException;\r
   9 import org.simantics.db.service.QueryControl;\r
  10 \r
  11 public class ${className} {\r
  12     \r
  13     <#list resources as resource>\r
  14     <#if resource.deprecated>@Deprecated </#if>public final Resource ${resource.javaName};\r
  15     </#list>\r
  16         \r
  17     public static class URIs {\r
  18         <#list resources as resource>\r
  19         <#if resource.deprecated>@Deprecated </#if>public static final String ${resource.javaName} = "${resource.uri}";\r
  20         </#list>\r
  21     }\r
  22     \r
  23     public static Resource getResourceOrNull(ReadGraph graph, String uri) {\r
  24         try {\r
  25             return graph.getResource(uri);\r
  26         } catch(DatabaseException e) {\r
  27             System.err.println(e.getMessage());\r
  28             return null;\r
  29         }\r
  30     }\r
  31     \r
  32     public ${className}(ReadGraph graph) {\r
  33         <#list resources as resource>\r
  34         ${resource.javaName} = getResourceOrNull(graph, URIs.${resource.javaName});\r
  35         </#list>\r
  36     }\r
  37     \r
  38     public static ${className} getInstance(ReadGraph graph) {\r
  39         Session session = graph.getSession();\r
  40         ${className} ret = session.peekService(${className}.class);\r
  41         if(ret == null) {\r
  42             QueryControl qc = graph.getService(QueryControl.class);\r
  43             ret = new ${className}(qc.getIndependentGraph(graph));\r
  44             session.registerService(${className}.class, ret);\r
  45         }\r
  46         return ret;\r
  47     }\r
  48     \r
  49     public static ${className} getInstance(RequestProcessor session) throws DatabaseException {\r
  50         ${className} ret = session.peekService(${className}.class);\r
  51         if(ret == null) {\r
  52             ret = session.syncRequest(new Read<${className}>() {\r
  53                 public ${className} perform(ReadGraph graph) throws DatabaseException {\r
  54                     QueryControl qc = graph.getService(QueryControl.class);\r
  55                     return new ${className}(qc.getIndependentGraph(graph));\r
  56                 }\r
  57             });\r
  58             session.registerService(${className}.class, ret);\r
  59         }\r
  60         return ret;\r
  61     }\r
  62     \r
  63 }\r
  64 \r