173-106-170

if (childrenReferences == null) { childrenReferences = new ArrayList<EReference>(); } return childrenReferences;
if (factoryInstance == null) { factoryInstance = (Resource.Factory)createInstance(); } return factoryInstance;

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/plugin/RegistryReader.java
Method name: `Collection getChildrenReferences(Object)` |  | Method name: `Resource.Factory createFactory()`
Number of AST nodes: 3 |  | Number of AST nodes: 3

1

    if (childrenReferences == null)↵

1

    if (factoryInstance == null)↵

2

        {↵

2

          {↵

3

          childrenReferences = new ArrayList<EReference>();↵

3

            factoryInstance = (Resource.Factory)createInstance();↵

4

        }↵

4

        ↵

5

      }↵

5

        return childrenReferences;

6

          return factoryInstance;

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 | 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) | 0.3
   Clone type | Type 2

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

   1

       if (childrenReferences == null)

   1 | if (childrenReferences == null)
   1 | if (factoryInstance == null)

   Differences
   Expression1 | Expression2 | Difference
   --- | --- | ---
   childrenReferences | factoryInstance | VARIABLE_NAME_MISMATCH
   java.util.List | org.eclipse.emf.ecore.resource.Resource.Factory | VARIABLE_TYPE_MISMATCH

   Preondition Violations

   Type java.util.List<org.eclipse.emf.ecore.EReference> of variable childrenReferences does not match with type org.eclipse.emf.ecore.resource.Resource.Factory of variable factoryInstance
   - Make classes java.util.List and org.eclipse.emf.ecore.resource.Resource.Factory extend a common superclass

   1

       if (factoryInstance == null)

   2

       factoryInstance = (Resource.Factory)createInstance();

   2

       childrenReferences = new ArrayList<EReference>();

   3 | return factoryInstance;

   Preondition Violations
   Unmatched return factoryInstance;

   3

       return factoryInstance;

   3

       return childrenReferences;

   3 | return childrenReferences;

   Preondition Violations
   Unmatched return childrenReferences;

   Precondition Violations (3)
   Row | Violation
   --- | ---
   1 | Type java.util.List<org.eclipse.emf.ecore.EReference> of variable childrenReferences does not match with type org.eclipse.emf.ecore.resource.Resource.Factory of variable factoryInstance
   2 | Unmatched return factoryInstance;
   3 | Unmatched return childrenReferences;