If a task has manual allocation and is moved then reset to flat

* Add function isManual in AssignmentFunction
* Modified AssignmentFunction::applyAssignmentFunctionsIfAny in order to
  reset to flat if manual allocation was applied

FEA: ItEr75S23FixAllocationModel

navalplanner-business/src/main/java/org/navalplanner/business/planner/entities/AssignmentFunction.java

@@ -38,6 +38,10 @@ public abstract class AssignmentFunction extends BaseEntity {
      * This method goes over the {@link ResourceAllocation} list and apply the
      * assignment function if it is defined.
      *
+     * As this is called at the end of {@link Task#doAllocation} and a flat
+     * allocation was already applied before. If assignment function was set to
+     * manual it is reseted to flat again.
+     *
      * @param resourceAllocations
      *            List of {@link ResourceAllocation}
      */
@@ -47,7 +51,12 @@ public abstract class AssignmentFunction extends BaseEntity {
             AssignmentFunction assignmentFunction = resourceAllocation
                     .getAssignmentFunction();
             if (assignmentFunction != null) {
-                assignmentFunction.applyTo(resourceAllocation);
+                if (assignmentFunction.isManual()) {
+                    // reset to flat
+                    resourceAllocation.setWithoutApply(null);
+                } else {
+                    assignmentFunction.applyTo(resourceAllocation);
+                }
             }
         }
     }
@@ -61,6 +70,8 @@ public abstract class AssignmentFunction extends BaseEntity {
 
     public abstract String getName();
 
+    public abstract boolean isManual();
+
     public enum AssignmentFunctionName {
         FLAT(_("Flat")),
         MANUAL(_("Manual")),

navalplanner-business/src/main/java/org/navalplanner/business/planner/entities/FlatFunction.java

@@ -63,4 +63,9 @@ public class FlatFunction extends AssignmentFunction {
             .untilAllocating(EffortDuration.hours(hours));
     }
 
+    @Override
+    public boolean isManual() {
+        return false;
+    }
+
 }

navalplanner-business/src/main/java/org/navalplanner/business/planner/entities/ManualFunction.java

@@ -41,4 +41,9 @@ public class ManualFunction extends AssignmentFunction {
         // Do nothing
     }
 
+    @Override
+    public boolean isManual() {
+        return true;
+    }
+
 }

navalplanner-business/src/main/java/org/navalplanner/business/planner/entities/ResourceAllocation.java

@@ -1429,7 +1429,7 @@ public abstract class ResourceAllocation<T extends DayAssignment> extends
         this.assignmentFunction.applyTo(this);
     }
 
-    private void setWithoutApply(AssignmentFunction assignmentFunction) {
+    protected void setWithoutApply(AssignmentFunction assignmentFunction) {
         this.assignmentFunction = assignmentFunction;
     }
 

navalplanner-business/src/main/java/org/navalplanner/business/planner/entities/SigmoidFunction.java

@@ -266,4 +266,9 @@ public class SigmoidFunction extends AssignmentFunction {
                 PRECISSION, ROUND_MODE);
     }
 
+    @Override
+    public boolean isManual() {
+        return false;
+    }
+
 }

navalplanner-business/src/main/java/org/navalplanner/business/planner/entities/StretchesFunction.java

@@ -476,4 +476,9 @@ public class StretchesFunction extends AssignmentFunction {
         }
     }
 
+    @Override
+    public boolean isManual() {
+        return false;
+    }
+
 }