diff --git a/models/workflow/workflow.go b/models/workflow/workflow.go
index 71f0a1f..b9f456b 100644
--- a/models/workflow/workflow.go
+++ b/models/workflow/workflow.go
@@ -227,6 +227,27 @@ func (wf *Workflow) Planify(start time.Time, end *time.Time, request *tools.APIR
 	return longest, priceds, wf, nil
 }
 
+func (w *Workflow) GetItemsByResources() (res map[tools.DataType]map[string][]string) {
+	dtMethodMap := map[tools.DataType]func() []graph.GraphItem{
+		tools.STORAGE_RESOURCE:  func() []graph.GraphItem { return w.GetGraphItems(w.Graph.IsStorage) },
+		tools.DATA_RESOURCE:     func() []graph.GraphItem { return w.GetGraphItems(w.Graph.IsData) },
+		tools.COMPUTE_RESOURCE:  func() []graph.GraphItem { return w.GetGraphItems(w.Graph.IsCompute) },
+		tools.PROCESSING_RESOURCE:  func() []graph.GraphItem { return w.GetGraphItems(w.Graph.IsProcessing) },
+		tools.WORKFLOW_RESOURCE: func() []graph.GraphItem { return w.GetGraphItems(w.Graph.IsWorkflow) },
+	}
+
+	for dt, meth := range dtMethodMap {
+		items := meth()
+		for _, i := range items {
+			_, r := i.GetResource()
+			rId := r.GetID()
+			res[dt][rId] = append(res[dt][rId],i.ID)
+		}
+	}
+
+	return
+}
+
 func plan[T resources.ResourceInterface](
 	dt tools.DataType, wf *Workflow, priceds map[tools.DataType]map[string]pricing.PricedItemITF, request *tools.APIRequest,
 	f func(graph.GraphItem) bool, start func(resources.ResourceInterface, pricing.PricedItemITF) (time.Time, float64), end func(time.Time, float64) *time.Time) ([]T, map[tools.DataType]map[string]pricing.PricedItemITF, error) {