if (instance == null) { instance = new ShutdownManager(); } return instance;
if (store == null) { store = ((IMAPRootFolder) getRootFolder()).getServer(); } return store;
Clone fragments detected by clone detection tool
File path: /columba-1.4-src/core/src/main/java/org/columba/core/shutdown/ShutdownManager.java File path: /columba-1.4-src/mail/src/main/java/org/columba/mail/folder/imap/IMAPFolder.java
Method name: IShutdownManager getInstance() Method name: IImapServer getServer()
Number of AST nodes: 3 Number of AST nodes: 3
1
if (instance == null) {
1
if (store == null) {
2
			instance = new ShutdownManager();
2
			store = ((IMAPRootFolder) getRootFolder()).getServer();
3
		}
3
		}
4
		return instance;
4
		return store;
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 (instance == null)
    1
    if (instance == null)
    1
    if (store == null)
    Differences
    Expression1Expression2Difference
    instancestoreVARIABLE_NAME_MISMATCH
    org.columba.api.shutdown.IShutdownManagerorg.columba.mail.imap.IImapServerVARIABLE_TYPE_MISMATCH
    Preondition Violations
    Type org.columba.api.shutdown.IShutdownManager of variable instance does not match with type org.columba.mail.imap.IImapServer of variable store
    • Make classes org.columba.api.shutdown.IShutdownManager and org.columba.mail.imap.IImapServer extend a common superclass
    1
    if (store == null)
                                                                                                                  
    2
    store = ((IMAPRootFolder)getRootFolder()).getServer();
    2
    instance = new ShutdownManager();
                                                                        
                                    
    3
    return store;
    Preondition Violations
    Unmatched return store;
    3
    return store;
    3
    return instance;
    3
    return instance;
    Preondition Violations
    Unmatched return instance;
                                          
    Precondition Violations (3)
    Row Violation
    1Type org.columba.api.shutdown.IShutdownManager of variable instance does not match with type org.columba.mail.imap.IImapServer of variable store
    2Unmatched return store;
    3Unmatched return instance;