if (parserFactory == null) { parserFactory = newParserFactory(); } return parserFactory;
if (value == null) { throw new BuildException("Nothing to test for truth"); } return value.booleanValue();
Clone fragments detected by clone detection tool
File path: /apache-ant-1.7.0/src/org/apache/tools/ant/util/JAXPUtils.java File path: /apache-ant-1.7.0/src/org/apache/tools/ant/taskdefs/condition/IsTrue.java
Method name: SAXParserFactory getParserFactory() Method name: boolean eval()
Number of AST nodes: 3 Number of AST nodes: 3
1
if (parserFactory == null) {
1
if (value == null) {
2
            parserFactory = newParserFactory();
2
            throw new BuildException("Nothing to test for truth");
3
        }
3
        }
4
        return parserFactory;
4
        return value.booleanValue();
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)0.3
    Clone typeType 2
    Mapped Statements
    ID Statement ID Statement
    1
    if (parserFactory == null)
    1
    if (parserFactory == null)
    1
    if (value == null)
    Differences
    Expression1Expression2Difference
    parserFactoryvalueVARIABLE_NAME_MISMATCH
    javax.xml.parsers.SAXParserFactoryjava.lang.BooleanVARIABLE_TYPE_MISMATCH
    Preondition Violations
    Type javax.xml.parsers.SAXParserFactory of variable parserFactory does not match with type java.lang.Boolean of variable value
    • Make classes javax.xml.parsers.SAXParserFactory and java.lang.Boolean extend a common superclass
    1
    if (value == null)
                                                                                                                      
    2
    throw new BuildException("Nothing to test for truth");
    Preondition Violations
    Unmatched throw new BuildException("Nothing to test for truth");
    2
    throw new BuildException("Nothing to test for truth");
    2
    parserFactory = newParserFactory();
                                                                            
                                                                  
    3
    return value.booleanValue();
    Preondition Violations
    Unmatched return value.booleanValue();
    3
    return value.booleanValue();
    3
    return parserFactory;
    3
    return parserFactory;
    Preondition Violations
    Unmatched return parserFactory;
                                                    
    Precondition Violations (4)
    Row Violation
    1Type javax.xml.parsers.SAXParserFactory of variable parserFactory does not match with type java.lang.Boolean of variable value
    2Unmatched throw new BuildException("Nothing to test for truth");
    3Unmatched return value.booleanValue();
    4Unmatched return parserFactory;