if (src == null) { throw new IllegalArgumentException("Null IDataSetModel passed"); } return src;
if (_propChgNotifier == null) { _propChgNotifier = new PropertyChangeSupport(_srcBean); } return _propChgNotifier;
Clone fragments detected by clone detection tool
File path: /sql12/fw/src/net/sourceforge/squirrel_sql/fw/datasetviewer/DataSetModelEvent.java File path: /sql12/fw/src/net/sourceforge/squirrel_sql/fw/util/PropertyChangeReporter.java
Method name: IDataSetModel validateSource(IDataSetModel) Method name: PropertyChangeSupport getPropertyChangeNotifier()
Number of AST nodes: 3 Number of AST nodes: 3
1
if (src == null) 
1
if (_propChgNotifier == null)
2
{
2
		{
3
			throw new IllegalArgumentException("Null IDataSetModel passed");
3
			
4
		}
5
		return src
4
_propChgNotifier = new PropertyChangeSupport(_srcBean);
5
		}
6
;
6
		return _propChgNotifier;
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)0.4
    Clone typeType 2
    Mapped Statements
    ID Statement ID Statement
    1
    if (src == null)
    1
    if (src == null)
    1
    if (_propChgNotifier == null)
    Differences
    Expression1Expression2Difference
    src_propChgNotifierVARIABLE_NAME_MISMATCH
    net.sourceforge.squirrel_sql.fw.datasetviewer.IDataSetModeljava.beans.PropertyChangeSupportVARIABLE_TYPE_MISMATCH
    Preondition Violations
    Type net.sourceforge.squirrel_sql.fw.datasetviewer.IDataSetModel of variable src does not match with type java.beans.PropertyChangeSupport of variable _propChgNotifier
    • Make classes net.sourceforge.squirrel_sql.fw.datasetviewer.IDataSetModel and java.beans.PropertyChangeSupport extend a common superclass
    1
    if (_propChgNotifier == null)
                                                                                                                    
    2
    _propChgNotifier = new PropertyChangeSupport(_srcBean);
    Preondition Violations
    Unmatched statement _propChgNotifier=new PropertyChangeSupport(_srcBean); cannot be moved before the extracted code, because it has control dependencies from statements that will be extracted
    2
    _propChgNotifier = new PropertyChangeSupport(_srcBean);
    2
    throw new IllegalArgumentException("Null IDataSetModel passed");
    2
    throw new IllegalArgumentException("Null IDataSetModel passed");
    Preondition Violations
    Unmatched statement throw new IllegalArgumentException("Null IDataSetModel passed"); cannot be moved before or after the extracted code, because it throws exception(s) that should be caught by a try block that will be extracted
    Unmatched throw new IllegalArgumentException("Null IDataSetModel passed");
                                                                                                                                          
                                                          
    3
    return _propChgNotifier;
    Preondition Violations
    Unmatched return _propChgNotifier;
    3
    return _propChgNotifier;
    3
    return src;
    3
    return src;
    Preondition Violations
    Unmatched statement return src; cannot be moved before the extracted code, because it has control dependencies from statements that will be extracted
    Unmatched return src;
                                
    Precondition Violations (8)
    Row Violation
    1Type net.sourceforge.squirrel_sql.fw.datasetviewer.IDataSetModel of variable src does not match with type java.beans.PropertyChangeSupport of variable _propChgNotifier
    2Unmatched statement _propChgNotifier=new PropertyChangeSupport(_srcBean); cannot be moved before the extracted code, because it has control dependencies from statements that will be extracted
    3Unmatched statement throw new IllegalArgumentException("Null IDataSetModel passed"); cannot be moved before or after the extracted code, because it throws exception(s) that should be caught by a try block that will be extracted
    4Unmatched throw new IllegalArgumentException("Null IDataSetModel passed");
    5Unmatched return _propChgNotifier;
    6Unmatched statement return src; cannot be moved before the extracted code, because it has control dependencies from statements that will be extracted
    7Unmatched return src;
    8The refactoring of the clones is infeasible, because the number of macthed statements is equal to zero