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

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