Variable optimizations for documents (Simupedia)

[simantics/platform.git] / bundles / org.simantics.db.layer0 / src / org / simantics / db / layer0 / variable / ProxyVariables.java

diff --git a/bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/variable/ProxyVariables.java b/bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/variable/ProxyVariables.java
index db552650b09c7098074bfd069b954a9b5d80ca15..ddfe108cb713a409f1da67df7e688748bdb94606 100644 (file)
--- a/bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/variable/ProxyVariables.java
+++ b/bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/variable/ProxyVariables.java
@@ -2,9 +2,29 @@ package org.simantics.db.layer0.variable;
 
 import org.simantics.db.ReadGraph;
 import org.simantics.db.exception.DatabaseException;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 public class ProxyVariables {
-       
+
+    private static final Logger LOGGER = LoggerFactory.getLogger(ProxyVariables.class);
+
+    public static Variable tryToOwn(ReadGraph graph, Variable parent, Variable variable) {
+        if (variable instanceof ProxyVariableSupport) {
+            ProxyVariableSupport pvs = (ProxyVariableSupport) variable;
+            return pvs.attachTo(graph, parent);
+        }
+        return null;
+    }
+
+    public static Variable tryToOwnRenamed(ReadGraph graph, Variable parent, Variable variable, String name) {
+        if (variable instanceof ProxyVariableSupport) {
+            ProxyVariableSupport pvs = (ProxyVariableSupport) variable;
+            return pvs.attachToRenamed(graph, parent, name);
+        }
+        return null;
+    }
+
        public static Variable inputVariable(ReadGraph graph, Variable context) throws DatabaseException {
        Variable session = graph.syncRequest(new ProxySessionRequest(context));
        if(session == null) return null;
@@ -52,7 +72,7 @@ public class ProxyVariables {
                        return input;
                }
         } catch (Throwable t) {
-            t.printStackTrace();
+            LOGGER.error("proxySessionVariable failed", t);
             return null;
         }
 
@@ -72,7 +92,7 @@ public class ProxyVariables {
                }
                
         } catch (Throwable t) {
-            t.printStackTrace();
+            LOGGER.error("proxyVariableBase failed", t);
             return null;
         }
 
@@ -108,7 +128,7 @@ public class ProxyVariables {
                }
                
         } catch (Throwable t) {
-            t.printStackTrace();
+            LOGGER.error("proxyVariableRoot failed", t);
             return null;
         }
 
@@ -118,5 +138,4 @@ public class ProxyVariables {
        return proxyVariableRoot(graph, variable) != null;
     }
 
-    
 }