Authorization auth = getAuthForURL(url); if (auth == null) { return null; } return auth.toBasicHeader();
Sampler s = c.next(); if (s == null) { return null; } return s.getName();
Clone fragments detected by clone detection tool
File path: /jakarta-jmeter-2.3.2/src/org/apache/jmeter/protocol/http/control/AuthManager.java File path: /jakarta-jmeter-2.3.2/test/src/org/apache/jmeter/control/TestWhileController.java
Method name: String getAuthHeaderForURL(URL) Method name: String nextName(GenericController)
Number of AST nodes: 4 Number of AST nodes: 4
1
Authorization auth = getAuthForURL(url);
1
Sampler s = c.next();
2
		if (auth == null) {
2
			if (s == null) {
3
			return null;
3
				return null;
4
		}
4
			}
5
		return auth.toBasicHeader();
5
			return s.getName();
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 comparisons8
  1. {Non-refactorable}
    Mapping Summary
    Number of mapped statements3
    Number of unmapped statements in the first code fragment1
    Number of unmapped statements in the second code fragment1
    Time elapsed for statement mapping (ms)11.8
    Clone typeType 2
    Mapped Statements
    ID Statement ID Statement
                                                
    1
    Sampler s = c.next();
    Preondition Violations
    Unmatched statement Sampler s=c.next(); cannot be moved before the extracted code, because it has control dependencies from statements that will be extracted
    1
    Sampler s = c.next();
    1
    Authorization auth = getAuthForURL(url);
                                                                                      
    2
    if (auth == null)
    2
    if (auth == null)
    2
    if (s == null)
    Differences
    Expression1Expression2Difference
    authsVARIABLE_NAME_MISMATCH
    org.apache.jmeter.protocol.http.control.Authorizationorg.apache.jmeter.samplers.SamplerSUBCLASS_TYPE_MISMATCH
    2
    if (s == null)
    3
    return null;
    3
    return null;
    4
    return auth.toBasicHeader();
    4
    return auth.toBasicHeader();
    4
    return s.getName();
    Differences
    Expression1Expression2Difference
    toBasicHeadergetNameMETHOD_INVOCATION_NAME_MISMATCH
    authsVARIABLE_NAME_MISMATCH
    org.apache.jmeter.protocol.http.control.Authorizationorg.apache.jmeter.samplers.SamplerSUBCLASS_TYPE_MISMATCH
    Preondition Violations
    Expression auth.toBasicHeader() cannot be parameterized, because it has dependencies to/from statements that will be extracted
    Expression s.getName() cannot be parameterized, because it has dependencies to/from statements that will be extracted
    4
    return s.getName();
    Precondition Violations (4)
    Row Violation
    1Unmatched statement Sampler s=c.next(); cannot be moved before the extracted code, because it has control dependencies from statements that will be extracted
    2Expression auth.toBasicHeader() cannot be parameterized, because it has dependencies to/from statements that will be extracted
    3Expression s.getName() cannot be parameterized, because it has dependencies to/from statements that will be extracted
    4The refactoring of the clones is infeasible, because classes org.apache.jmeter.protocol.http.control.AuthManager and org.apache.jmeter.control.TestWhileController do not have a common superclass