if (nsParserFactory == null) { nsParserFactory = newParserFactory(); nsParserFactory.setNamespaceAware(true); } return nsParserFactory;
if (expression == null) { throw new BuildException("Expression attribute is missing."); } return expression;
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/XSLTProcess.java
Method name: SAXParserFactory getNSParserFactory() Method name: String getExpression()
Number of AST nodes: 4 Number of AST nodes: 3
1
if (nsParserFactory == null) {
1
if (expression == null) {
2
            nsParserFactory = newParserFactory();
2
            
3
            nsParserFactory.setNamespaceAware(true);
3
    throw new BuildException("Expression attribute is missing.");
4
        }
4
            }
5
        return nsParserFactory;
5
            return expression;
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 statements1
    Number of unmapped statements in the first code fragment3
    Number of unmapped statements in the second code fragment2
    Time elapsed for statement mapping (ms)0.3
    Clone typeType 3
    Mapped Statements
    ID Statement ID Statement
    1
    if (nsParserFactory == null)
    1
    if (nsParserFactory == null)
    1
    if (expression == null)
    Differences
    Expression1Expression2Difference
    nsParserFactoryexpressionVARIABLE_NAME_MISMATCH
    javax.xml.parsers.SAXParserFactoryjava.lang.StringVARIABLE_TYPE_MISMATCH
    Preondition Violations
    Type javax.xml.parsers.SAXParserFactory of variable nsParserFactory does not match with type java.lang.String of variable expression
    • Make classes javax.xml.parsers.SAXParserFactory and java.lang.String extend a common superclass
    1
    if (expression == null)
                                                                                                                                    
    2
    throw new BuildException("Expression attribute is missing.");
    Preondition Violations
    Unmatched throw new BuildException("Expression attribute is missing.");
    2
    throw new BuildException("Expression attribute is missing.");
    2
    nsParserFactory = newParserFactory();
                                                                                
    3
    nsParserFactory.setNamespaceAware(true);
                                                                                          
                                              
    3
    return expression;
    Preondition Violations
    Unmatched return expression;
    3
    return expression;
    4
    return nsParserFactory;
    4
    return nsParserFactory;
    Preondition Violations
    Unmatched return nsParserFactory;
                                                        
    Precondition Violations (4)
    Row Violation
    1Type javax.xml.parsers.SAXParserFactory of variable nsParserFactory does not match with type java.lang.String of variable expression
    2Unmatched throw new BuildException("Expression attribute is missing.");
    3Unmatched return expression;
    4Unmatched return nsParserFactory;