173-103-108

if (workspaceRoot == null) { workspaceRoot = ResourcesPlugin.getWorkspace().getRoot(); } return workspaceRoot;
if (itemPropertyDescriptors == null) { itemPropertyDescriptors = new ArrayList<IItemPropertyDescriptor>(); } return itemPropertyDescriptors;

Clone fragments detected by clone detection tool
File path: /emf-2.4.1/src/org/eclipse/emf/importer/ModelImporter.java |  | File path: /emf-2.4.1/src/org/eclipse/emf/edit/provider/ItemProviderAdapter.java
Method name: `IWorkspaceRoot getWorkspaceRoot()` |  | Method name: `List getPropertyDescriptors(Object)`
Number of AST nodes: 3 |  | Number of AST nodes: 3

1

    if (workspaceRoot == null)↵

1

    if (↵

2

        {↵

3

          workspaceRoot = ResourcesPlugin.getWorkspace().getRoot();↵

4

        }↵

5

        return workspaceRoot↵

2

    itemPropertyDescriptors == null)↵

3

        {↵

4

          itemPropertyDescriptors = new ArrayList<IItemPropertyDescriptor>();↵

5

        }↵

6

    ;

6

        return itemPropertyDescriptors;

See real code fragment |  | See real code fragment

Summary
Number of common nesting structure subtrees | 1
Number of refactorable cases | 0
Number of non-refactorable cases | 1
Time elapsed for finding largest common nesting structure subtrees (ms) | 0.2
Clones location | Clones are in different classes
Number of node comparisons | 5

1. {Non-refactorable}

   Mapping Summary
   Number of mapped statements | 1
   Number of unmapped statements in the first code fragment | 2
   Number of unmapped statements in the second code fragment | 2
   Time elapsed for statement mapping (ms) | 1.9
   Clone type | Type 2

   Mapped Statements
   ID | Statement |  | ID | Statement
   --- | --- | --- | --- | ---

   1

       if (workspaceRoot == null)

   1 | if (workspaceRoot == null)
   1 | if (itemPropertyDescriptors == null)

   Differences
   Expression1 | Expression2 | Difference
   --- | --- | ---
   workspaceRoot | itemPropertyDescriptors | VARIABLE_NAME_MISMATCH
   org.eclipse.core.resources.IWorkspaceRoot | java.util.List | VARIABLE_TYPE_MISMATCH

   Preondition Violations

   Type org.eclipse.core.resources.IWorkspaceRoot of variable workspaceRoot does not match with type java.util.List<org.eclipse.emf.edit.provider.IItemPropertyDescriptor> of variable itemPropertyDescriptors
   - Make classes org.eclipse.core.resources.IWorkspaceRoot and java.util.List extend a common superclass

   1

       if (itemPropertyDescriptors == null)

   2 | itemPropertyDescriptors = new ArrayList<IItemPropertyDescriptor>();

   Preondition Violations
   Unmatched statement itemPropertyDescriptors=new ArrayList<IItemPropertyDescriptor>(); cannot be moved before the extracted code, because it has control dependencies from statements that will be extracted

   2

       itemPropertyDescriptors = new ArrayList<IItemPropertyDescriptor>();

   2

       workspaceRoot = ResourcesPlugin.getWorkspace().getRoot();

   2 | workspaceRoot = ResourcesPlugin.getWorkspace().getRoot();

   Preondition Violations
   Unmatched statement workspaceRoot=ResourcesPlugin.getWorkspace().getRoot(); cannot be moved before the extracted code, because it has control dependencies from statements that will be extracted

   3 | return itemPropertyDescriptors;

   Preondition Violations
   Unmatched return itemPropertyDescriptors;

   3

       return itemPropertyDescriptors;

   3

       return workspaceRoot;

   3 | return workspaceRoot;

   Preondition Violations
   Unmatched return workspaceRoot;

   Precondition Violations (6)
   Row | Violation
   --- | ---
   1 | Type org.eclipse.core.resources.IWorkspaceRoot of variable workspaceRoot does not match with type java.util.List<org.eclipse.emf.edit.provider.IItemPropertyDescriptor> of variable itemPropertyDescriptors
   2 | Unmatched statement itemPropertyDescriptors=new ArrayList<IItemPropertyDescriptor>(); cannot be moved before the extracted code, because it has control dependencies from statements that will be extracted
   3 | Unmatched statement workspaceRoot=ResourcesPlugin.getWorkspace().getRoot(); cannot be moved before the extracted code, because it has control dependencies from statements that will be extracted
   4 | Unmatched return itemPropertyDescriptors;
   5 | Unmatched return workspaceRoot;
   6 | The refactoring of the clones is infeasible, because the number of macthed statements is equal to zero