173-118-167

if (packageRegistry == null) { packageRegistry = new EPackageRegistryImpl(EPackage.Registry.INSTANCE); } return packageRegistry;
if (eProperties == null) { eProperties = new EPropertiesHolderImpl(); } return eProperties;

Clone fragments detected by clone detection tool
File path: /emf-2.4.1/src/org/eclipse/emf/ecore/resource/impl/ResourceSetImpl.java |  | File path: /emf-2.4.1/src/org/eclipse/emf/ecore/impl/EStringToStringMapEntryImpl.java
Method name: `EPackage.Registry getPackageRegistry()` |  | Method name: `EPropertiesHolder eProperties()`
Number of AST nodes: 3 |  | Number of AST nodes: 3

1

    if (packageRegistry == null)↵

1

    if (eProperties == null)↵

2

        {↵

2

        {↵

3

          packageRegistry = new EPackageRegistryImpl(EPackage.Registry.INSTANCE);↵

3

          eProperties = new EPropertiesHolderImpl();↵

4

        }↵

4

        }↵

5

        return packageRegistry;

5

        return eProperties;

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 having the same super class
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) | 25.9
   Clone type | Type 2

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

   1

       if (packageRegistry == null)

   1 | if (packageRegistry == null)
   1 | if (eProperties == null)

   Differences
   Expression1 | Expression2 | Difference
   --- | --- | ---
   packageRegistry | eProperties | VARIABLE_NAME_MISMATCH
   org.eclipse.emf.ecore.EPackage.Registry | org.eclipse.emf.ecore.impl.BasicEObjectImpl.EPropertiesHolder | VARIABLE_TYPE_MISMATCH

   Preondition Violations

   Type org.eclipse.emf.ecore.EPackage.Registry of variable packageRegistry does not match with type org.eclipse.emf.ecore.impl.BasicEObjectImpl.EPropertiesHolder of variable eProperties
   - Make classes org.eclipse.emf.ecore.EPackage.Registry and org.eclipse.emf.ecore.impl.BasicEObjectImpl.EPropertiesHolder extend a common superclass

   1

       if (eProperties == null)

   2 | eProperties = new EPropertiesHolderImpl();

   Preondition Violations
   Unmatched statement eProperties=new EPropertiesHolderImpl(); cannot be moved before the extracted code, because it has control dependencies from statements that will be extracted

   2

       eProperties = new EPropertiesHolderImpl();

   2

       packageRegistry = new EPackageRegistryImpl(EPackage.Registry.INSTANCE);

   2 | packageRegistry = new EPackageRegistryImpl(EPackage.Registry.INSTANCE);

   Preondition Violations
   Unmatched statement packageRegistry=new EPackageRegistryImpl(EPackage.Registry.INSTANCE); cannot be moved before the extracted code, because it has control dependencies from statements that will be extracted

   3 | return eProperties;

   Preondition Violations
   Unmatched return eProperties;

   3

       return eProperties;

   3

       return packageRegistry;

   3 | return packageRegistry;

   Preondition Violations
   Unmatched return packageRegistry;

   Precondition Violations (6)
   Row | Violation
   --- | ---
   1 | Type org.eclipse.emf.ecore.EPackage.Registry of variable packageRegistry does not match with type org.eclipse.emf.ecore.impl.BasicEObjectImpl.EPropertiesHolder of variable eProperties
   2 | Unmatched statement eProperties=new EPropertiesHolderImpl(); cannot be moved before the extracted code, because it has control dependencies from statements that will be extracted
   3 | Unmatched statement packageRegistry=new EPackageRegistryImpl(EPackage.Registry.INSTANCE); cannot be moved before the extracted code, because it has control dependencies from statements that will be extracted
   4 | Unmatched return eProperties;
   5 | Unmatched return packageRegistry;
   6 | The refactoring of the clones is infeasible, because the number of macthed statements is equal to zero