173-31-116

if (childrenFeatures == null) { super.getChildrenFeatures(object); childrenFeatures.add(EcorePackage.Literals.EMODEL_ELEMENT__EANNOTATIONS); } return childrenFeatures;
if (contents == null) { contents = new ContentsEList<EObject>(); } return contents;

Clone fragments detected by clone detection tool
File path: /emf-2.4.1/src/org/eclipse/emf/ecore/provider/EModelElementItemProvider.java |  | File path: /emf-2.4.1/src/org/eclipse/emf/ecore/resource/impl/ResourceImpl.java
Method name: `Collection getChildrenFeatures(Object)` |  | Method name: `EList getContents()`
Number of AST nodes: 4 |  | Number of AST nodes: 3

1

    if (childrenFeatures == null)↵

1

    if (contents == null)↵

2

        {↵

2

        {↵

3

          super.getChildrenFeatures(object);↵

3

          ↵

4

          childrenFeatures.add(EcorePackage.Literals.EMODEL_ELEMENT__EANNOTATIONS);↵

4

    contents = new ContentsEList<EObject>();↵

5

        }↵

5

        }↵

6

        return childrenFeatures;

6

        return contents;

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 | 7

1. {Non-refactorable}

   Mapping Summary
   Number of mapped statements | 2
   Number of unmapped statements in the first code fragment | 2
   Number of unmapped statements in the second code fragment | 1
   Time elapsed for statement mapping (ms) | 62.2
   Clone type | Type 3

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

   1

       if (childrenFeatures == null)

   1 | if (childrenFeatures == null)
   1 | if (contents == null)

   Differences
   Expression1 | Expression2 | Difference
   --- | --- | ---
   childrenFeatures | contents | VARIABLE_NAME_MISMATCH
   java.util.List | org.eclipse.emf.ecore.resource.impl.ResourceImpl.ContentsEList | SUBCLASS_TYPE_MISMATCH

   1

       if (contents == null)

   2 | contents = new ContentsEList<EObject>();

   Preondition Violations
   Unmatched statement contents=new ContentsEList<EObject>(); cannot be moved before or after the extracted code, because it has dependencies to/from statements that will be extracted

   2

       contents = new ContentsEList<EObject>();

   2

       super.getChildrenFeatures(object);

   3

       childrenFeatures.add(EcorePackage.Literals.EMODEL_ELEMENT__EANNOTATIONS);

   3 | childrenFeatures.add(EcorePackage.Literals.EMODEL_ELEMENT__EANNOTATIONS);

   Preondition Violations
   Unmatched statement childrenFeatures.add(EcorePackage.Literals.EMODEL_ELEMENT__EANNOTATIONS); cannot be moved before the extracted code, because it has control dependencies from statements that will be extracted

   4

       return childrenFeatures;

   4 | return childrenFeatures;
   3 | return contents;

   Differences
   Expression1 | Expression2 | Difference
   --- | --- | ---
   childrenFeatures | contents | VARIABLE_NAME_MISMATCH
   java.util.List | org.eclipse.emf.ecore.resource.impl.ResourceImpl.ContentsEList | SUBCLASS_TYPE_MISMATCH

   3

       return contents;

   Precondition Violations (3)
   Row | Violation
   --- | ---
   1 | Unmatched statement contents=new ContentsEList<EObject>(); cannot be moved before or after the extracted code, because it has dependencies to/from statements that will be extracted
   2 | Unmatched statement childrenFeatures.add(EcorePackage.Literals.EMODEL_ELEMENT__EANNOTATIONS); cannot be moved before the extracted code, because it has control dependencies from statements that will be extracted
   3 | The refactoring of the clones is infeasible, because classes org.eclipse.emf.ecore.provider.EModelElementItemProvider and org.eclipse.emf.ecore.resource.impl.ResourceImpl do not have a common superclass