if (aktMessage != null) { aktMessage.close(); aktMessage = null; } super.expungeFolder();
if( environment != null ) { environment.close(); environment = null; }
Clone fragments detected by clone detection tool
File path: /columba-1.4-src/mail/src/main/java/org/columba/mail/folder/AbstractLocalFolder.java File path: /columba-1.4-src/mail/src/main/java/org/columba/mail/folder/headercache/BerkeleyDBHeaderList.java
Method name: void expungeFolder() Method name: void closeEnvironment()
Number of AST nodes: 4 Number of AST nodes: 3
1
if (aktMessage != null) {
1
if( environment != null ) {
2
			aktMessage.close();
2
				environment.close();
3
			aktMessage = null;
3
			
4
		}
5
		super.expungeFolder();
4
	environment = null;
5
			}
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)0.2
Clones locationClones are in different classes
Number of node comparisons9
  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)1.0
    Clone typeType 3
    Mapped Statements
    ID Statement ID Statement
    1
    if (aktMessage != null)
    1
    if (aktMessage != null)
    4
    if (environment != null)
    Differences
    Expression1Expression2Difference
    aktMessageenvironmentVARIABLE_NAME_MISMATCH
    org.columba.mail.message.ColumbaMessagecom.sleepycat.je.EnvironmentVARIABLE_TYPE_MISMATCH
    Preondition Violations
    Type org.columba.mail.message.ColumbaMessage of variable aktMessage does not match with type com.sleepycat.je.Environment of variable environment
    • Make classes org.columba.mail.message.ColumbaMessage and com.sleepycat.je.Environment extend a common superclass
    4
    if (environment != null)
    2
    aktMessage.close();
    2
    aktMessage.close();
    5
    environment.close();
    Differences
    Expression1Expression2Difference
    aktMessageenvironmentVARIABLE_NAME_MISMATCH
    org.columba.mail.message.ColumbaMessagecom.sleepycat.je.EnvironmentVARIABLE_TYPE_MISMATCH
    Preondition Violations
    Type org.columba.mail.message.ColumbaMessage of variable aktMessage does not match with type com.sleepycat.je.Environment of variable environment
    • Make classes org.columba.mail.message.ColumbaMessage and com.sleepycat.je.Environment extend a common superclass
    5
    environment.close();
    3
    aktMessage = null;
    3
    aktMessage = null;
    Preondition Violations
    Unmatched statement aktMessage=null; cannot be moved before the extracted code, because it has control dependencies from statements that will be extracted
                                          
                                            
    6
    environment = null;
    Preondition Violations
    Unmatched statement environment=null; cannot be moved before the extracted code, because it has control dependencies from statements that will be extracted
    6
    environment = null;
    4
    super.expungeFolder();
                                                      
    Precondition Violations (5)
    Row Violation
    1Type org.columba.mail.message.ColumbaMessage of variable aktMessage does not match with type com.sleepycat.je.Environment of variable environment
    2Type org.columba.mail.message.ColumbaMessage of variable aktMessage does not match with type com.sleepycat.je.Environment of variable environment
    3Unmatched statement aktMessage=null; cannot be moved before the extracted code, because it has control dependencies from statements that will be extracted
    4Unmatched statement environment=null; cannot be moved before the extracted code, because it has control dependencies from statements that will be extracted
    5The refactoring of the clones is infeasible, because classes org.columba.mail.folder.AbstractLocalFolder and org.columba.mail.folder.headercache.BerkeleyDBHeaderList do not have a common superclass