List list = (List) prefixMapping.get(prefix); if (list == null || list.size() == 0) { return; // Should not happen }
List list = (List) prefixMapping.get(prefix); if (list == null || list.size() == 0) { return null; }
Clone fragments detected by clone detection tool
File path: /apache-ant-1.7.0/src/org/apache/tools/ant/helper/AntXMLContext.java File path: /apache-ant-1.7.0/src/org/apache/tools/ant/helper/AntXMLContext.java
Method name: void endPrefixMapping(String) Method name: String getPrefixMapping(String)
Number of AST nodes: 3 Number of AST nodes: 3
1
List list = (List) prefixMapping.get(prefix);
1
List list = (List) prefixMapping.get(prefix);
2
        if (list == null || list.size() == 0) {
2
        if (list == null || list.size() == 0) {
3
            return; // Should not happen
3
            return null;
4
        }
4
        }
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 declared in the same class
Number of node comparisons5
  1. {Non-refactorable}
    Mapping Summary
    Number of mapped statements2
    Number of unmapped statements in the first code fragment1
    Number of unmapped statements in the second code fragment1
    Time elapsed for statement mapping (ms)0.5
    Clone typeType 2
    Mapped Statements
    ID Statement ID Statement
    1
    List list = (List)prefixMapping.get(prefix);
    1
    List list = (List)prefixMapping.get(prefix);
    2
    if (list == null || list.size() == 0)
    2
    if (list == null || list.size() == 0)
                                  
    3
    return null;
    Preondition Violations
    Unmatched return null;
    3
    return null;
    3
    return;
    3
    return;
    Preondition Violations
    Unmatched return;
                        
    Precondition Violations (2)
    Row Violation
    1Unmatched return null;
    2Unmatched return;