bundles/org.simantics.diagram/src/org/simantics/diagram/profile/ProfileActivityBeanRepresentation.java

   1 package org.simantics.diagram.profile;
   2
   3 import java.util.Map;
   4
   5 import org.simantics.db.RequestProcessor;
   6 import org.simantics.db.Resource;
   7 import org.simantics.db.exception.DatabaseException;
   8 import org.simantics.db.layer0.util.SimanticsClipboard.Representation;
   9 import org.simantics.utils.datastructures.hints.IHintContext.Key;
  10 import org.simantics.utils.datastructures.hints.IHintContext.KeyOf;
  11 import org.slf4j.Logger;
  12 import org.slf4j.LoggerFactory;
  13
  14 /**
  15  * @author Tuukka Lehtonen
  16  * @since 6.08
  17  */
  18 public class ProfileActivityBeanRepresentation implements Representation {
  19
  20         private static final Logger LOGGER = LoggerFactory.getLogger(ProfileActivityBeanRepresentation.class);
  21
  22         public static Key KEY = new KeyOf(ProfileActivityBean.class, "PROFILE_ACTIVITY_BEAN");
  23
  24         private final Resource source;
  25         private ProfileActivityBean bean;
  26
  27         public ProfileActivityBeanRepresentation(Resource source) {
  28                 this.source = source;
  29         }
  30
  31         @Override
  32         public Key getKey() {
  33                 return KEY;
  34         }
  35
  36         @SuppressWarnings("unchecked")
  37         @Override
  38         public <T> T getValue(RequestProcessor processor, Map<String,Object> hints) {
  39                 if (bean == null) {
  40                         try {
  41                                 bean = Profiles.readProfileActivity(processor, source);
  42                         } catch (DatabaseException e) {
  43                                 LOGGER.error("Failed to read profile activity information from model " + source, e);
  44                                 // Prevent the code from attempting further reads from this source
  45                                 bean = new ProfileActivityBean();
  46                         }
  47                 }
  48                 return (T) bean;
  49         }
  50
  51 }