if (expression == null) { throw new BuildException("Expression attribute is missing."); } return expression;
if (monitor == null) { monitor = new ProgressMonitor(); } return monitor;
Clone fragments detected by clone detection tool
File path: /apache-ant-1.7.0/src/org/apache/tools/ant/taskdefs/XSLTProcess.java File path: /apache-ant-1.7.0/src/org/apache/tools/ant/taskdefs/optional/ssh/AbstractSshMessage.java
Method name: String getExpression() Method name: SftpProgressMonitor getProgressMonitor()
Number of AST nodes: 3 Number of AST nodes: 3
1
if (expression == null) {
1
if (monitor == null) {
2
                throw new BuildException("Expression attribute is missing.");
2
            monitor = new ProgressMon
3
    
3
itor();
4
        }
4
        }
5
            return expression;
5
        return monitor;
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 (expression == null)
    1
    if (expression == null)
    1
    if (monitor == null)
    Differences
    Expression1Expression2Difference
    expressionmonitorVARIABLE_NAME_MISMATCH
    java.lang.Stringorg.apache.tools.ant.taskdefs.optional.ssh.AbstractSshMessage.ProgressMonitorVARIABLE_TYPE_MISMATCH
    Preondition Violations
    Type java.lang.String of variable expression does not match with type org.apache.tools.ant.taskdefs.optional.ssh.AbstractSshMessage.ProgressMonitor of variable monitor
    • Make classes java.lang.String and org.apache.tools.ant.taskdefs.optional.ssh.AbstractSshMessage.ProgressMonitor extend a common superclass
    1
    if (monitor == null)
                                                                      
    2
    monitor = new ProgressMonitor();
    2
    throw new BuildException("Expression attribute is missing.");
    2
    throw new BuildException("Expression attribute is missing.");
    Preondition Violations
    Unmatched throw new BuildException("Expression attribute is missing.");
                                                                                                                                    
                                        
    3
    return monitor;
    Preondition Violations
    Unmatched return monitor;
    3
    return monitor;
    3
    return expression;
    3
    return expression;
    Preondition Violations
    Unmatched return expression;
                                              
    Precondition Violations (4)
    Row Violation
    1Type java.lang.String of variable expression does not match with type org.apache.tools.ant.taskdefs.optional.ssh.AbstractSshMessage.ProgressMonitor of variable monitor
    2Unmatched throw new BuildException("Expression attribute is missing.");
    3Unmatched return monitor;
    4Unmatched return expression;