1.1 --- a/bpel.mapper/src/org/netbeans/modules/bpel/mapper/model/BpelMapperModel.java	Mon Apr 07 17:57:43 2008 +0400
     1.2 +++ b/bpel.mapper/src/org/netbeans/modules/bpel/mapper/model/BpelMapperModel.java	Mon Apr 07 19:00:14 2008 +0400
     1.3 @@ -83,7 +83,8 @@
     1.4          //
     1.5          mConnectionConstraints = new ConnectionConstraint[] {
     1.6                  ConnectionConstraint.Access.getGeneralConstraint(this),
     1.7 -                ConnectionConstraint.Access.getPlConstraint()
     1.8 +                ConnectionConstraint.Access.getPlConstraint(),
     1.9 +                ConnectionConstraint.Access.getMVarConstraint()
    1.10          };
    1.11      }
    1.12  

     2.1 --- a/bpel.mapper/src/org/netbeans/modules/bpel/mapper/model/ConnectionConstraint.java	Mon Apr 07 17:57:43 2008 +0400
     2.2 +++ b/bpel.mapper/src/org/netbeans/modules/bpel/mapper/model/ConnectionConstraint.java	Mon Apr 07 19:00:14 2008 +0400
     2.3 @@ -22,6 +22,7 @@
     2.4  import org.netbeans.modules.bpel.mapper.tree.MapperSwingTreeModel;
     2.5  import org.netbeans.modules.bpel.mapper.tree.MapperTreeNode;
     2.6  import org.netbeans.modules.bpel.model.api.PartnerLink;
     2.7 +import org.netbeans.modules.bpel.model.api.Variable;
     2.8  import org.netbeans.modules.bpel.model.api.support.Roles;
     2.9  import org.netbeans.modules.soa.mappercore.model.Graph;
    2.10  import org.netbeans.modules.soa.mappercore.model.Link;
    2.11 @@ -53,6 +54,10 @@
    2.12          public static ConnectionConstraint getPlConstraint() {
    2.13              return new PlConstraint();
    2.14          }
    2.15 +
    2.16 +        public static ConnectionConstraint getMVarConstraint() {
    2.17 +            return new MVarConstraint();
    2.18 +        }
    2.19      }
    2.20  
    2.21      class GeneralConstraint implements ConnectionConstraint {
    2.22 @@ -172,4 +177,34 @@
    2.23              return true;
    2.24          }
    2.25      }
    2.26 +
    2.27 +    class MVarConstraint implements ConnectionConstraint {
    2.28 +
    2.29 +        public boolean canConnect(TreePath treePath, SourcePin source,
    2.30 +                                  TargetPin target, TreePath oldTreePath,
    2.31 +                                  Link oldLink) 
    2.32 +        {
    2.33 +            if (target instanceof VertexItem) {
    2.34 +                if (source instanceof TreeSourcePin) {
    2.35 +                    TreePath tPath = ((TreeSourcePin)source).getTreePath();
    2.36 +                    Object node = tPath.getLastPathComponent();
    2.37 +                    if (node instanceof MapperTreeNode) {
    2.38 +                        Object dataObj = ((MapperTreeNode)node).getDataObject();
    2.39 +                        if (isMessageVariable(dataObj)) {
    2.40 +                            return false;
    2.41 +                        }
    2.42 +                    }
    2.43 +                }
    2.44 +            }
    2.45 +            return true;
    2.46 +        }
    2.47 +        
    2.48 +        private boolean isMessageVariable(Object obj) {
    2.49 +            if (! (obj instanceof Variable)) {
    2.50 +                return false;
    2.51 +            }
    2.52 +            Variable var = (Variable)obj;
    2.53 +            return var.getMessageType() != null;
    2.54 +        }
    2.55 +    }
    2.56  }