173-107-209

if (childrenFeatures == null) { childrenFeatures = new ArrayList<EStructuralFeature>(); } return childrenFeatures;
if (result == null) { result = new ArrayList<EStructuralFeature>(); } result.add(eStructuralFeature); break;

Clone fragments detected by clone detection tool
File path: /emf-2.4.1/src/org/eclipse/emf/edit/provider/ItemProviderAdapter.java |  | File path: /emf-2.4.1/src/org/eclipse/emf/ecore/util/BasicExtendedMetaData.java
Method name: `Collection getChildrenFeatures(Object)` |  | Method name: `List getElements(EClass)`
Number of AST nodes: 3 |  | Number of AST nodes: 4

1

    if (childrenFeatures == null)↵

1

    if (result == null)↵

2

        {↵

2

              {↵

3

          childrenFeatures = new ArrayList<EStructuralFeature>();↵

3

                result = new ArrayList<EStructuralFeature>();↵

4

        }↵

4

              }↵

5

        return childrenFeatures↵

5

              result.add(eStructuralFeature);↵

6

    ;

6

              break;

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) | 0.1
Clones location | Clones are in different classes
Number of node comparisons | 6

1. {Non-refactorable}

   Mapping Summary
   Number of mapped statements | 2
   Number of unmapped statements in the first code fragment | 1
   Number of unmapped statements in the second code fragment | 2
   Time elapsed for statement mapping (ms) | 1.1
   Clone type | Type 3

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

   1

       if (childrenFeatures == null)

   1 | if (childrenFeatures == null)
   9 | if (result == null)

   Differences
   Expression1 | Expression2 | Difference
   --- | --- | ---
   childrenFeatures | result | VARIABLE_NAME_MISMATCH

   9

       if (result == null)

   2

       childrenFeatures = new ArrayList<EStructuralFeature>();

   2 | childrenFeatures = new ArrayList<EStructuralFeature>();
   10 | result = new ArrayList<EStructuralFeature>();

   Differences
   Expression1 | Expression2 | Difference
   --- | --- | ---
   childrenFeatures | result | VARIABLE_NAME_MISMATCH

   10

       result = new ArrayList<EStructuralFeature>();

   3

       return childrenFeatures;

   11 | result.add(eStructuralFeature);

   Preondition Violations
   Unmatched statement result.add(eStructuralFeature); cannot be moved before or after the extracted code, because it has dependencies to/from statements that will be extracted

   11

       result.add(eStructuralFeature);

   12 | break;

   Preondition Violations
   Unmatched break;

   12

       break;

   Precondition Violations (4)
   Row | Violation
   --- | ---
   1 | Unmatched statement result.add(eStructuralFeature); cannot be moved before or after the extracted code, because it has dependencies to/from statements that will be extracted
   2 | Unmatched break;
   3 | Clone fragment #1 returns variables , while Clone fragment #2 returns variables result
   4 | The refactoring of the clones is infeasible, because classes org.eclipse.emf.edit.provider.ItemProviderAdapter and org.eclipse.emf.ecore.util.BasicExtendedMetaData do not have a common superclass