bundles/org.simantics.structural2/src/org/simantics/structural2/variables/ComponentConnectionDescriptor.java

   1 package org.simantics.structural2.variables;\r
   2 \r
   3 import org.simantics.db.ReadGraph;\r
   4 import org.simantics.db.Resource;\r
   5 import org.simantics.db.common.procedure.adapter.TransientCacheAsyncListener;\r
   6 import org.simantics.db.common.request.UnaryRead;\r
   7 import org.simantics.db.exception.DatabaseException;\r
   8 import org.simantics.db.layer0.variable.Variable;\r
   9 \r
  10 public class ComponentConnectionDescriptor extends AbstractVariableConnectionPointDescriptor {\r
  11         \r
  12         public Variable component;\r
  13         public Resource cp;\r
  14         \r
  15         public ComponentConnectionDescriptor(Variable component, Resource cp) {\r
  16                 this.component = component;\r
  17                 this.cp = cp;\r
  18         }\r
  19         @Override\r
  20         public int hashCode() {\r
  21                 return component.hashCode() + 31*cp.hashCode();\r
  22         }\r
  23         @Override\r
  24         public boolean equals(Object object) {\r
  25         if (this == object)\r
  26             return true;\r
  27         else if (object == null)\r
  28             return false;\r
  29         else if (!(object instanceof ComponentConnectionDescriptor))\r
  30             return false;\r
  31         ComponentConnectionDescriptor r = (ComponentConnectionDescriptor)object;\r
  32         if(!r.cp.equals(cp)) return false;\r
  33         if(!r.component.equals(component)) return false;\r
  34         return true;\r
  35         }\r
  36 \r
  37         static class ComputeVariable extends UnaryRead<ComponentConnectionDescriptor, Variable> {\r
  38 \r
  39                 public ComputeVariable(ComponentConnectionDescriptor desc) {\r
  40                         super(desc);\r
  41                 }\r
  42 \r
  43                 @Override\r
  44                 public Variable perform(ReadGraph graph) throws DatabaseException {\r
  45                         return parameter.component.getProperty(graph, parameter.cp);\r
  46                 }\r
  47                 \r
  48         }\r
  49         @Override\r
  50         public Variable getVariable(ReadGraph graph) throws DatabaseException {\r
  51                 return graph.syncRequest(new ComputeVariable(this), TransientCacheAsyncListener.<Variable>instance());\r
  52         }\r
  53         public String getURI(ReadGraph graph) throws DatabaseException {\r
  54                 return getVariable(graph).getURI(graph);\r
  55         }\r
  56         @Override\r
  57         public Resource getConnectionPointResource(ReadGraph graph) throws DatabaseException {\r
  58                 return getVariable(graph).getPossiblePredicateResource(graph);\r
  59         }\r
  60         \r
  61         @Override\r
  62         public boolean isFlattenedFrom(ReadGraph graph, Variable possiblyStructuralCp) throws DatabaseException {\r
  63 \r
  64                 Variable parent = possiblyStructuralCp.getParent(graph);\r
  65                 \r
  66                 String descURI = getURI(graph);\r
  67                 String parentURI = parent.getURI(graph);\r
  68                 if(descURI.startsWith(parentURI)) {\r
  69                         // Children are in substructure\r
  70                         if('/' == descURI.charAt(parentURI.length())) return true;\r
  71                         // Otherwise require exact match\r
  72                         return descURI.endsWith(possiblyStructuralCp.getName(graph));\r
  73                 } else {\r
  74                         return false;\r
  75                 }\r
  76                 \r
  77         }\r
  78         \r
  79 }