PG permissions read fix (NPEs, empty roles name)

Former-commit-id: d6220ced

plugins/org.jkiss.dbeaver.ext.postgresql/src/org/jkiss/dbeaver/ext/postgresql/edit/PostgreCommandGrantPrivilege.java

@@ -76,9 +76,13 @@ public class PostgreCommandGrantPrivilege extends DBECommandAbstract<PostgrePerm
             roleName = DBUtils.getQuotedIdentifier(object);
             objectName = ((PostgreRolePermission)permission).getFullObjectName();
         } else {
-            roleName = DBUtils.getQuotedIdentifier(object.getDataSource(), ((PostgreObjectPermission) permission).getGrantee());
+            PostgreObjectPermission permission = (PostgreObjectPermission) this.permission;
+            roleName = permission.getGrantee() == null ? null : DBUtils.getQuotedIdentifier(object.getDataSource(), permission.getGrantee());
             objectName = PostgreUtils.getObjectUniqueName(object);
         }
+        if (roleName == null) {
+            return new DBEPersistAction[0];
+        }
 
         String objectType;
         if (permission instanceof PostgreRolePermission) {

plugins/org.jkiss.dbeaver.ext.postgresql/src/org/jkiss/dbeaver/ext/postgresql/model/PostgreObjectPermission.java

@@ -42,7 +42,7 @@ public class PostgreObjectPermission extends PostgrePermission {
     @Property(viewable = true, order = 1)
     @NotNull
     public String getName() {
-        return DBUtils.getQuotedIdentifier(getDataSource(), grantee);
+        return grantee == null ? "": DBUtils.getQuotedIdentifier(getDataSource(), grantee);
     }
 
     @Override