if (FACTORY == null) { FACTORY = new ObjectFactory(); } return FACTORY;
if (readBuffer == null) { readBuffer = new byte[8192]; } return readBuffer;
Clone fragments detected by clone detection tool
File path: /jakarta-jmeter-2.3.2/src/org/apache/jmeter/monitor/model/ObjectFactory.java File path: /jakarta-jmeter-2.3.2/src/org/apache/jmeter/threads/JMeterContext.java
Method name: ObjectFactory getInstance() Method name: byte[] getReadBuffer()
Number of AST nodes: 3 Number of AST nodes: 3
1
if (FACTORY == null) {
1
if (readBuffer == null) {
2
			FACTORY = new ObjectFactory();
2
			readBuffer = new byte[8192];
3
		}
3
		}
4
		return FACTORY;
4
		return readBuffer;
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 comparisons5
  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 fragment2
    Time elapsed for statement mapping (ms)0.6
    Clone typeType 2
    Mapped Statements
    ID Statement ID Statement
    1
    if (FACTORY == null)
    1
    if (FACTORY == null)
    1
    if (readBuffer == null)
    Differences
    Expression1Expression2Difference
    FACTORYreadBufferVARIABLE_NAME_MISMATCH
    org.apache.jmeter.monitor.model.ObjectFactorybyte[]VARIABLE_TYPE_MISMATCH
    Preondition Violations
    Type org.apache.jmeter.monitor.model.ObjectFactory of variable FACTORY does not match with type byte[] of variable readBuffer
    • Make classes org.apache.jmeter.monitor.model.ObjectFactory and byte[] extend a common superclass
    1
    if (readBuffer == null)
                                                              
    2
    readBuffer = new byte[8192];
    Preondition Violations
    Unmatched statement readBuffer=new byte[8192]; cannot be moved before the extracted code, because it has control dependencies from statements that will be extracted
    2
    readBuffer = new byte[8192];
    2
    FACTORY = new ObjectFactory();
    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
                                                                  
                                              
    3
    return readBuffer;
    Preondition Violations
    Unmatched return readBuffer;
    3
    return readBuffer;
    3
    return FACTORY;
    3
    return FACTORY;
    Preondition Violations
    Unmatched return FACTORY;
                                        
    Precondition Violations (6)
    Row Violation
    1Type org.apache.jmeter.monitor.model.ObjectFactory of variable FACTORY does not match with type byte[] of variable readBuffer
    2Unmatched statement readBuffer=new byte[8192]; cannot be moved before the extracted code, because it has control dependencies from statements that will be extracted
    3Unmatched statement FACTORY=new ObjectFactory(); cannot be moved before the extracted code, because it has control dependencies from statements that will be extracted
    4Unmatched return readBuffer;
    5Unmatched return FACTORY;
    6The refactoring of the clones is infeasible, because the number of macthed statements is equal to zero