Allow batch issue validation to remove issues with disconnected context

[simantics/platform.git] / bundles / org.simantics.modeling / src / org / simantics / modeling / utils / BatchValidations.java

diff --git a/bundles/org.simantics.modeling/src/org/simantics/modeling/utils/BatchValidations.java b/bundles/org.simantics.modeling/src/org/simantics/modeling/utils/BatchValidations.java
index 91d85aed2593b00097f75f29a5dc0cc6240bf484..0ce852403f3b888fa1a94a7fd2aca20f33c7e439 100644 (file)
--- a/bundles/org.simantics.modeling/src/org/simantics/modeling/utils/BatchValidations.java
+++ b/bundles/org.simantics.modeling/src/org/simantics/modeling/utils/BatchValidations.java
@@ -14,8 +14,10 @@ import org.eclipse.core.runtime.Status;
 import org.eclipse.core.runtime.SubMonitor;
 import org.simantics.Simantics;
 import org.simantics.db.Issue;
+import org.simantics.db.ReadGraph;
 import org.simantics.db.Resource;
 import org.simantics.db.Session;
+import org.simantics.db.Statement;
 import org.simantics.db.VirtualGraph;
 import org.simantics.db.WriteGraph;
 import org.simantics.db.common.request.WriteRequest;
@@ -213,4 +215,39 @@ public class BatchValidations {
                return result;
        }
 
+       /**
+        * Checks if the specified <code>resourceToCheckForLinks</code> is linked to
+        * anything else besides itself and <code>excludeLinksTo</code>.
+        * 
+        * <p>
+        * This is used to if an issue context is still valid. We consider any issue
+        * context that is not attached to something else besides its issue context to
+        * be an invalid issue. Assertions and L0.InstanceOf do not count as external
+        * links.
+        * 
+        * @param graph database access handle
+        * @param resourceToCheckForLinks the resource to check for "external" links
+        * @param excludeLinksTo exclude links to this resource from evaluation
+        * @return <code>true</code> if there are links, <code>false</code> otherwise
+        * @throws DatabaseException 
+        */
+       public static boolean isLinkedToOtherThan(ReadGraph graph, Resource resourceToCheckForLinks,
+                       Resource excludeLinksTo)
+                                       throws DatabaseException
+       {
+               Layer0 L0 = Layer0.getInstance(graph);
+               for (Statement stm : graph.getStatements(resourceToCheckForLinks, L0.IsWeaklyRelatedTo)) {
+                       if (stm.isAsserted(resourceToCheckForLinks))
+                               continue;
+                       if (stm.getPredicate().equals(L0.InstanceOf))
+                               continue;
+                       Resource o = stm.getObject();
+                       if (o.equals(excludeLinksTo) || o.equals(resourceToCheckForLinks))
+                               continue;
+
+                       return true;
+               }
+               return false;
+       }
+
 }