if (isReference()) { throw noChildrenAllowed(); } PatternSet patterns = new PatternSet(); additionalPatterns.addElement(patterns); directoryScanner = null; return patterns;
if (isReference()) { throw noChildrenAllowed(); } PatternSet patterns = new PatternSet(); additionalPatterns.addElement(patterns); ds = null; return patterns;
Clone fragments detected by clone detection tool
File path: /apache-ant-1.7.0/src/org/apache/tools/ant/types/AbstractFileSet.java File path: /apache-ant-1.7.0/src/org/apache/tools/ant/types/resources/Files.java
Method name: PatternSet createPatternSet() Method name: PatternSet createPatternSet()
Number of AST nodes: 6 Number of AST nodes: 6
1
if (isReference()) {
1
if (isReference()) {
2
            throw noChildrenAllowed();
2
            throw noChildrenAllowed();
3
        }
3
        }
4
        PatternSet patterns = new PatternSet();
4
        PatternSet patterns = new PatternSet();
5
        additionalPatterns.addElement(patterns);
5
        additionalPatterns.addElement(patterns);
6
        directoryScanner = null;
6
        ds = null;
7
        return patterns;
7
        return patterns;
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 having the same super class
Number of node comparisons11
  1. {Non-refactorable}
    Mapping Summary
    Number of mapped statements6
    Number of unmapped statements in the first code fragment0
    Number of unmapped statements in the second code fragment0
    Time elapsed for statement mapping (ms)0.8
    Clone typeType 2
    Mapped Statements
    ID Statement ID Statement
    1
    if (isReference())
    1
    if (isReference())
    2
    throw noChildrenAllowed();
    2
    throw noChildrenAllowed();
    3
    PatternSet patterns = new PatternSet();
    3
    PatternSet patterns = new PatternSet();
    4
    additionalPatterns.addElement(patterns);
    4
    additionalPatterns.addElement(patterns);
    5
    directoryScanner = null;
    5
    directoryScanner = null;
    5
    ds = null;
    Differences
    Expression1Expression2Difference
    directoryScannerdsVARIABLE_NAME_MISMATCH
    Preondition Violations
    Expression directoryScanner is a field being modified, and thus it cannot be parameterized
    Expression ds is a field being modified, and thus it cannot be parameterized
    5
    ds = null;
    6
    return patterns;
    6
    return patterns;
    Precondition Violations (2)
    Row Violation
    1Expression directoryScanner is a field being modified, and thus it cannot be parameterized
    2Expression ds is a field being modified, and thus it cannot be parameterized