173-118-145

if (packageRegistry == null) { packageRegistry = new EPackageRegistryImpl(EPackage.Registry.INSTANCE); } return packageRegistry;
if (validatorMap == null) { validatorMap = new Hashtable<EClass, FeatureMapUtil.Validator>(); } return validatorMap;

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/util/BasicExtendedMetaData.java
Method name: `EPackage.Registry getPackageRegistry()` |  | Method name: `Map getValidatorMap()`
Number of AST nodes: 3 |  | Number of AST nodes: 3

1

    if (packageRegistry == null)↵

1

    if (validatorMap == null)↵

2

        {↵

2

        ↵

3

          packageRegistry = new EPackageRegistryImpl(EPackage.Registry.INSTANCE↵

3

      {↵

4

    );↵

4

            validatorMap = new Hashtable<EClass, FeatureMapUtil.Validator>();↵

5

        }↵

5

          }↵

6

        return packageRegistry;

6

          return validatorMap;

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) | 2.2
   Clone type | Type 2

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

   1

       if (packageRegistry == null)

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

   Differences
   Expression1 | Expression2 | Difference
   --- | --- | ---
   packageRegistry | validatorMap | VARIABLE_NAME_MISMATCH
   org.eclipse.emf.ecore.EPackage.Registry | java.util.Map | VARIABLE_TYPE_MISMATCH

   Preondition Violations

   Type org.eclipse.emf.ecore.EPackage.Registry of variable packageRegistry does not match with type java.util.Map<org.eclipse.emf.ecore.EClass,org.eclipse.emf.ecore.util.FeatureMapUtil.Validator> of variable validatorMap
   - Make classes org.eclipse.emf.ecore.EPackage.Registry and java.util.Map extend a common superclass

   1

       if (validatorMap == null)

   2 | validatorMap = new Hashtable<EClass, FeatureMapUtil.Validator>();

   Preondition Violations
   Unmatched statement validatorMap=new Hashtable<EClass,FeatureMapUtil.Validator>(); cannot be moved before the extracted code, because it has control dependencies from statements that will be extracted

   2

       validatorMap = new Hashtable<EClass, FeatureMapUtil.Validator>();

   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 validatorMap;

   Preondition Violations
   Unmatched return validatorMap;

   3

       return validatorMap;

   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 java.util.Map<org.eclipse.emf.ecore.EClass,org.eclipse.emf.ecore.util.FeatureMapUtil.Validator> of variable validatorMap
   2 | Unmatched statement validatorMap=new Hashtable<EClass,FeatureMapUtil.Validator>(); 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 validatorMap;
   5 | Unmatched return packageRegistry;
   6 | The refactoring of the clones is infeasible, because the number of macthed statements is equal to zero