if (nsParserFactory == null) { nsParserFactory = newParserFactory(); nsParserFactory.setNamespaceAware(true); } return nsParserFactory;
if (jrePackages == null) { buildJrePackages(); } return jrePackages;
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/util/JavaEnvUtils.java
Method name: SAXParserFactory getNSParserFactory() Method name: Vector getJrePackages()
Number of AST nodes: 4 Number of AST nodes: 3
1
if (nsParserFactory == null) {
1
if (jrePackages == null) {
2
            nsParserFactory = newParserFactory();
2
            
3
            nsParserFactory.setNamespaceAware(true);
3
buildJrePackages();
4
        }
4
        }
5
        return nsParserFactory;
5
        return jrePackages;
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 comparisons7
  1. {Non-refactorable}
    Mapping Summary
    Number of mapped statements2
    Number of unmapped statements in the first code fragment2
    Number of unmapped statements in the second code fragment1
    Time elapsed for statement mapping (ms)0.6
    Clone typeType 3
    Mapped Statements
    ID Statement ID Statement
    1
    if (nsParserFactory == null)
    1
    if (nsParserFactory == null)
    1
    if (jrePackages == null)
    Differences
    Expression1Expression2Difference
    nsParserFactoryjrePackagesVARIABLE_NAME_MISMATCH
    javax.xml.parsers.SAXParserFactoryjava.util.VectorVARIABLE_TYPE_MISMATCH
    Preondition Violations
    Type javax.xml.parsers.SAXParserFactory of variable nsParserFactory does not match with type java.util.Vector of variable jrePackages
    • Make classes javax.xml.parsers.SAXParserFactory and java.util.Vector extend a common superclass
    1
    if (jrePackages == null)
    2
    nsParserFactory = newParserFactory();
    2
    nsParserFactory = newParserFactory();
    Preondition Violations
    Unmatched statement nsParserFactory=newParserFactory(); cannot be moved before or after the extracted code, because it has dependencies to/from statements that will be extracted
                                                                                
    3
    nsParserFactory.setNamespaceAware(true);
    3
    nsParserFactory.setNamespaceAware(true);
    2
    buildJrePackages();
    Differences
    Expression1Expression2Difference
    setNamespaceAwarebuildJrePackagesMETHOD_INVOCATION_NAME_MISMATCH
    nsParserFactory.setNamespaceAware(true)buildJrePackages()ARGUMENT_NUMBER_MISMATCH
    nsParserFactoryMISSING_METHOD_INVOCATION_EXPRESSION
    Preondition Violations
    Expression buildJrePackages() cannot be parameterized, because it has dependencies to/from statements that will be extracted
    • Inline private method buildJrePackages
    Expression nsParserFactory.setNamespaceAware(true) is a void method call, and thus it cannot be parameterized
    Expression buildJrePackages() is a void method call, and thus it cannot be parameterized
    Expression buildJrePackages() cannot be parameterized, because it has dependencies to/from statements that will be extracted
    • Inline private method buildJrePackages
    Expression nsParserFactory.setNamespaceAware(true) is a void method call, and thus it cannot be parameterized
    Expression buildJrePackages() is a void method call, and thus it cannot be parameterized
    2
    buildJrePackages();
                                                
    3
    return jrePackages;
    4
    return nsParserFactory;
    4
    return nsParserFactory;
    Preondition Violations
    Unmatched return nsParserFactory;
                                                        
    Precondition Violations (9)
    Row Violation
    1Type javax.xml.parsers.SAXParserFactory of variable nsParserFactory does not match with type java.util.Vector of variable jrePackages
    2Unmatched statement nsParserFactory=newParserFactory(); cannot be moved before or after the extracted code, because it has dependencies to/from statements that will be extracted
    3Expression buildJrePackages() cannot be parameterized, because it has dependencies to/from statements that will be extracted
    4Expression nsParserFactory.setNamespaceAware(true) is a void method call, and thus it cannot be parameterized
    5Expression buildJrePackages() is a void method call, and thus it cannot be parameterized
    6Expression buildJrePackages() cannot be parameterized, because it has dependencies to/from statements that will be extracted
    7Expression nsParserFactory.setNamespaceAware(true) is a void method call, and thus it cannot be parameterized
    8Expression buildJrePackages() is a void method call, and thus it cannot be parameterized
    9Unmatched return nsParserFactory;