if (files == null) { files = new HashSet(); } files.add(filename);
synchronized(LoggingManager.class){ if (logManager == null) { logManager = new LoggingManager(); } }
Clone fragments detected by clone detection tool
File path: /jakarta-jmeter-2.3.2/src/org/apache/jmeter/samplers/SampleResult.java File path: /jakarta-jmeter-2.3.2/src/org/apache/jorphan/logging/LoggingManager.java
Method name: void setMarked(String) Method name: void initializeLogging(Properties)
Number of AST nodes: 3 Number of AST nodes: 3
1
if (files
1
synchronized(LoggingManager.class){
2
 == null) {
2
    		if (logManager == null) {
3
			files = new HashSet();
3
    			logManager = new LoggingManager();
4
		}
4
    		}
5
		files.add(filename);
5
	    }
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)0.2
Clones locationClones are in different classes
Number of node comparisons4
  1. {Non-refactorable}
    Mapping Summary
    Number of mapped statements1
    Number of unmapped statements in the first code fragment2
    Number of unmapped statements in the second code fragment1
    Time elapsed for statement mapping (ms)0.7
    Clone typeType 3
    Mapped Statements
    ID Statement ID Statement
    1
    if (files == null)
    1
    if (files == null)
    2
    if (logManager == null)
    Differences
    Expression1Expression2Difference
    fileslogManagerVARIABLE_NAME_MISMATCH
    java.util.Setorg.apache.jorphan.logging.LoggingManagerVARIABLE_TYPE_MISMATCH
    Preondition Violations
    Type java.util.Set of variable files does not match with type org.apache.jorphan.logging.LoggingManager of variable logManager
    • Make classes java.util.Set and org.apache.jorphan.logging.LoggingManager extend a common superclass
    2
    if (logManager == null)
    2
    files = new HashSet();
    2
    files = new HashSet();
    Preondition Violations
    Unmatched statement files=new HashSet(); cannot be moved before the extracted code, because it has control dependencies from statements that will be extracted
                                                  
                                                                          
    3
    logManager = new LoggingManager();
    Preondition Violations
    Unmatched statement logManager=new LoggingManager(); cannot be moved before the extracted code, because it has control dependencies from statements that will be extracted
    3
    logManager = new LoggingManager();
    3
    files.add(filename);
    3
    files.add(filename);
    Preondition Violations
    Unmatched statement files.add(filename); cannot be moved before the extracted code, because it has control dependencies from statements that will be extracted
                                                  
    Precondition Violations (5)
    Row Violation
    1Type java.util.Set of variable files does not match with type org.apache.jorphan.logging.LoggingManager of variable logManager
    2Unmatched statement files=new HashSet(); cannot be moved before the extracted code, because it has control dependencies from statements that will be extracted
    3Unmatched statement logManager=new LoggingManager(); cannot be moved before the extracted code, because it has control dependencies from statements that will be extracted
    4Unmatched statement files.add(filename); cannot be moved before the extracted code, because it has control dependencies from statements that will be extracted
    5The refactoring of the clones is infeasible, because the number of macthed statements is equal to zero