AbstractVariableConnectionPointDescriptor.java

   1 package org.simantics.structural2.variables;
   2
   3 import java.util.Collection;
   4
   5 import org.simantics.db.ReadGraph;
   6 import org.simantics.db.common.procedure.adapter.TransientCacheAsyncListener;
   7 import org.simantics.db.common.request.UnaryRead;
   8 import org.simantics.db.exception.DatabaseException;
   9 import org.simantics.db.layer0.request.PropertyInfo;
  10 import org.simantics.db.layer0.request.PropertyInfoRequest;
  11 import org.simantics.db.layer0.variable.Variable;
  12 import org.simantics.db.layer0.variable.Variables;
  13 import org.simantics.structural2.Functions;
  14 import org.simantics.structural2.Functions.InterfaceResolution;
  15
  16 abstract public class AbstractVariableConnectionPointDescriptor implements VariableConnectionPointDescriptor {
  17
  18         static class ComputeInterfaceDescription extends UnaryRead<AbstractVariableConnectionPointDescriptor, Collection<InterfaceResolution>> {
  19
  20                 public ComputeInterfaceDescription(AbstractVariableConnectionPointDescriptor desc) {
  21                         super(desc);
  22                 }
  23
  24                 @Override
  25                 public Collection<InterfaceResolution> perform(ReadGraph graph) throws DatabaseException {
  26                         return Functions.computeInterfacePaths(graph, parameter.getVariable(graph).getParent(graph));
  27                 }
  28
  29         }
  30
  31         @Override
  32         public Collection<InterfaceResolution> getInterfaceDescription(ReadGraph graph) throws DatabaseException {
  33                 return graph.syncRequest(new ComputeInterfaceDescription(this), TransientCacheAsyncListener.<Collection<InterfaceResolution>>instance());
  34         }
  35
  36         @Override
  37         public boolean isLeaf(ReadGraph graph) throws DatabaseException {
  38
  39                 Collection<InterfaceResolution> inf = getInterfaceDescription(graph);
  40                 if(inf == null) return true;
  41                 return inf.isEmpty();
  42
  43         }
  44
  45         @Override
  46         public boolean hasClassification(ReadGraph graph, String classification) throws DatabaseException {
  47
  48         PropertyInfo info = graph.syncRequest(new PropertyInfoRequest(getConnectionPointResource(graph)), TransientCacheAsyncListener.<PropertyInfo>instance());
  49         return info.hasClassification(classification);
  50
  51         }
  52
  53         @Override
  54         public String getRelativeRVI(ReadGraph graph, Variable base) throws DatabaseException {
  55
  56         String var = getURI(graph);
  57         String baseURI = base.getURI(graph);
  58         return Variables.getRelativeRVI(baseURI, var);
  59
  60         }
  61
  62 }