if (router == null) { router = new ActionRouter(); router.populateCommandMap(); } return router;
if (FACTORY == null) { FACTORY = new ObjectFactory(); } return FACTORY;
Clone fragments detected by clone detection tool
File path: /jakarta-jmeter-2.3.2/src/org/apache/jmeter/gui/action/ActionRouter.java File path: /jakarta-jmeter-2.3.2/src/org/apache/jmeter/monitor/model/ObjectFactory.java
Method name: ActionRouter getInstance() Method name: ObjectFactory getInstance()
Number of AST nodes: 4 Number of AST nodes: 3
1
if (router == null) {
1
if (FACTORY == null) {
2
			router = new ActionRouter();
2
			
3
			router.populateCommandMap();
3
FACTORY = new ObjectFactory();
4
		}
4
		}
5
		return router;
5
		return FACTORY;
Summary
Number of common nesting structure subtrees1
Number of refactorable cases0
Number of non-refactorable cases1
Time elapsed for finding largest common nesting structure subtrees (ms)0.1
Clones locationClones are in different classes
Number of node comparisons7
  1. {Non-refactorable}
    Mapping Summary
    Number of mapped statements1
    Number of unmapped statements in the first code fragment3
    Number of unmapped statements in the second code fragment2
    Time elapsed for statement mapping (ms)0.8
    Clone typeType 3
    Mapped Statements
    ID Statement ID Statement
    1
    if (router == null)
    1
    if (router == null)
    1
    if (FACTORY == null)
    Differences
    Expression1Expression2Difference
    routerFACTORYVARIABLE_NAME_MISMATCH
    org.apache.jmeter.gui.action.ActionRouterorg.apache.jmeter.monitor.model.ObjectFactoryVARIABLE_TYPE_MISMATCH
    Preondition Violations
    Type org.apache.jmeter.gui.action.ActionRouter of variable router does not match with type org.apache.jmeter.monitor.model.ObjectFactory of variable FACTORY
    • Make classes org.apache.jmeter.gui.action.ActionRouter and org.apache.jmeter.monitor.model.ObjectFactory extend a common superclass
    1
    if (FACTORY == null)
                                                                  
    2
    FACTORY = new ObjectFactory();
    Preondition Violations
    Unmatched statement FACTORY=new ObjectFactory(); cannot be moved before the extracted code, because it has control dependencies from statements that will be extracted
    2
    FACTORY = new ObjectFactory();
    2
    router = new ActionRouter();
    2
    router = new ActionRouter();
    Preondition Violations
    Unmatched statement router=new ActionRouter(); cannot be moved before the extracted code, because it has control dependencies from statements that will be extracted
                                                              
    3
    router.populateCommandMap();
    3
    router.populateCommandMap();
    Preondition Violations
    Unmatched statement router.populateCommandMap(); cannot be moved before the extracted code, because it has control dependencies from statements that will be extracted
    Unmatched statement router.populateCommandMap(); cannot be moved before or after the extracted code, because it throws exception(s) that should be caught by a try block that will be extracted
                                                                  
                                        
    3
    return FACTORY;
    Preondition Violations
    Unmatched return FACTORY;
    3
    return FACTORY;
    4
    return router;
    4
    return router;
    Preondition Violations
    Unmatched return router;
                                      
    Precondition Violations (8)
    Row Violation
    1Type org.apache.jmeter.gui.action.ActionRouter of variable router does not match with type org.apache.jmeter.monitor.model.ObjectFactory of variable FACTORY
    2Unmatched statement FACTORY=new ObjectFactory(); cannot be moved before the extracted code, because it has control dependencies from statements that will be extracted
    3Unmatched statement router=new ActionRouter(); cannot be moved before the extracted code, because it has control dependencies from statements that will be extracted
    4Unmatched statement router.populateCommandMap(); cannot be moved before the extracted code, because it has control dependencies from statements that will be extracted
    5Unmatched statement router.populateCommandMap(); cannot be moved before or after the extracted code, because it throws exception(s) that should be caught by a try block that will be extracted
    6Unmatched return FACTORY;
    7Unmatched return router;
    8The refactoring of the clones is infeasible, because the number of macthed statements is equal to zero