bundles/org.simantics.document.server/src/org/simantics/document/server/request/DocumentRequest.java

   1 package org.simantics.document.server.request;
   2
   3 import java.util.ArrayList;
   4 import java.util.Collections;
   5 import java.util.Comparator;
   6 import java.util.HashSet;
   7 import java.util.List;
   8 import java.util.Set;
   9
  10 import org.simantics.db.ReadGraph;
  11 import org.simantics.db.common.procedure.adapter.TransientCacheAsyncListener;
  12 import org.simantics.db.exception.DatabaseException;
  13 import org.simantics.db.layer0.request.VariableRead;
  14 import org.simantics.db.layer0.variable.Variable;
  15 import org.simantics.document.server.JSONObject;
  16
  17 public class DocumentRequest extends VariableRead<List<JSONObject>> {
  18
  19         public static boolean PROFILE = false;
  20         // Thresholds in microseconds
  21         public static int PROFILE_THRESHOLD_NODEREQUEST = 2000;
  22         public static int PROFILE_THRESHOLD_VALUEREQUEST = 500;
  23
  24     public DocumentRequest(Variable var) {
  25         super(var);
  26         }
  27
  28         @Override
  29         public List<JSONObject> perform(ReadGraph graph) throws DatabaseException {
  30
  31                 long s = System.nanoTime();
  32
  33         Set<Variable> nodes = graph.syncRequest(new NodesRequest(variable), TransientCacheAsyncListener.<Set<Variable>>instance());
  34         HashSet<JSONObject> rs = new HashSet<JSONObject>(); // result
  35         if(nodes.isEmpty()) {
  36             return Collections.emptyList();
  37         }
  38
  39
  40         /*TreeMap<String, Variable> nodeMap = new TreeMap<String, Variable>();
  41
  42         for (Variable node : nodes) {
  43                 nodeMap.put(node.getURI(graph), node);
  44         }
  45         System.out.println("*************************************************************************");
  46         for (Variable node : nodeMap.values()) {
  47                 System.out.println("               " + node.getURI(graph));
  48         }*/
  49
  50         for(Variable node : nodes) {
  51             rs.add(graph.syncRequest(new NodeRequest(node), TransientCacheAsyncListener.<JSONObject>instance()));
  52         }
  53
  54                 ArrayList<JSONObject> result = new ArrayList<JSONObject>(rs);
  55                 Collections.sort(result, new Comparator<JSONObject>() {
  56
  57                         @Override
  58                         public int compare(JSONObject o1, JSONObject o2) {
  59                                 return o1.id.compareTo(o2.id);
  60                         }
  61
  62                 });
  63
  64         if(PROFILE) {
  65                 long dura = System.nanoTime()-s;
  66                 System.err.println("DocumentRequest " + System.identityHashCode(this) + " in " + 1e-6*dura + "ms. " + variable.getURI(graph));
  67         }
  68
  69                 return result;
  70
  71         }
  72 }