if (charset == null) { charset = Charset.forName(System.getProperty("file.encoding")); } return charset;
if (spellcheckItem == null) { spellcheckItem = new SpellcheckItem(getRoot().getElement("/options/spellcheck")); } return spellcheckItem;
Clone fragments detected by clone detection tool
File path: /columba-1.4-src/mail/src/main/java/org/columba/mail/gui/composer/ComposerModel.java File path: /columba-1.4-src/mail/src/main/java/org/columba/mail/config/ComposerOptionsXmlConfig.java
Method name: Charset getCharset() Method name: SpellcheckItem getSpellcheckItem()
Number of AST nodes: 3 Number of AST nodes: 3
1
if (charset == null) {
1
if (
2
			charset = Charset.forName(System.getProperty("file.encoding"));
3
		}
4
		return charset
2
spellcheckItem == null) {
3
            spellcheckItem = new SpellcheckItem(getRoot().getElement("/options/spellcheck"));
4
        }
5
;
5
        return spellcheckItem;
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)0.8
    Clone typeType 2
    Mapped Statements
    ID Statement ID Statement
    1
    if (charset == null)
    1
    if (charset == null)
    1
    if (spellcheckItem == null)
    Differences
    Expression1Expression2Difference
    charsetspellcheckItemVARIABLE_NAME_MISMATCH
    java.nio.charset.Charsetorg.columba.mail.config.SpellcheckItemVARIABLE_TYPE_MISMATCH
    Preondition Violations
    Type java.nio.charset.Charset of variable charset does not match with type org.columba.mail.config.SpellcheckItem of variable spellcheckItem
    • Make classes java.nio.charset.Charset and org.columba.mail.config.SpellcheckItem extend a common superclass
    1
    if (spellcheckItem == null)
                                                                                                                                                                        
    2
    spellcheckItem = new SpellcheckItem(getRoot().getElement("/options/spellcheck"));
    Preondition Violations
    Unmatched statement spellcheckItem=new SpellcheckItem(getRoot().getElement("/options/spellcheck")); cannot be moved before the extracted code, because it has control dependencies from statements that will be extracted
    2
    spellcheckItem = new SpellcheckItem(getRoot().getElement("/options/spellcheck"));
    2
    charset = Charset.forName(System.getProperty("file.encoding"));
    2
    charset = Charset.forName(System.getProperty("file.encoding"));
    Preondition Violations
    Unmatched statement charset=Charset.forName(System.getProperty("file.encoding")); cannot be moved before the extracted code, because it has control dependencies from statements that will be extracted
                                                                                                                                    
                                                      
    3
    return spellcheckItem;
    Preondition Violations
    Unmatched return spellcheckItem;
    3
    return spellcheckItem;
    3
    return charset;
    3
    return charset;
    Preondition Violations
    Unmatched return charset;
                                        
    Precondition Violations (6)
    Row Violation
    1Type java.nio.charset.Charset of variable charset does not match with type org.columba.mail.config.SpellcheckItem of variable spellcheckItem
    2Unmatched statement spellcheckItem=new SpellcheckItem(getRoot().getElement("/options/spellcheck")); cannot be moved before the extracted code, because it has control dependencies from statements that will be extracted
    3Unmatched statement charset=Charset.forName(System.getProperty("file.encoding")); cannot be moved before the extracted code, because it has control dependencies from statements that will be extracted
    4Unmatched return spellcheckItem;
    5Unmatched return charset;
    6The refactoring of the clones is infeasible, because the number of macthed statements is equal to zero