if (from.isNullable().equalsIgnoreCase(to.isNullable())) { return null; } return dialect.getColumnNullableAlterSQL(to, qualifier, prefs);
if (from.getColumnName().equals(to.getColumnName())) { return null; } return dialect.getColumnNameAlterSQL(from, to, qualifier, prefs);
Clone fragments detected by clone detection tool
File path: /sql12/plugins/refactoring/src/net/sourceforge/squirrel_sql/plugins/refactoring/DBUtil.java File path: /sql12/plugins/refactoring/src/net/sourceforge/squirrel_sql/plugins/refactoring/DBUtil.java
Method name: String[] getNullAlterSQL(TableColumnInfo, TableColumnInfo, HibernateDialect, DatabaseObjectQualifier, SqlGenerationPreferences) Method name: String getColumnNameAlterSQL(TableColumnInfo, TableColumnInfo, HibernateDialect, DatabaseObjectQualifier, SqlGenerationPreferences)
Number of AST nodes: 3 Number of AST nodes: 3
1
if (from.isNullable().equalsIgnoreCase(to.isNullable()))
1
if (from.getColumnName().equals(to.getColumnName()))
2
		{
2
		{
3
			return null;
3
			return null;
4
		}
4
		}
5
		return dialect.getColumnNullableAlterSQL(to, qualifier, prefs);
5
		return dialect.getColumnNameAlterSQL(from, to, qualifier, prefs);
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 declared in the same class
Number of node comparisons5
  1. {Non-refactorable}
    Mapping Summary
    Number of mapped statements2
    Number of unmapped statements in the first code fragment1
    Number of unmapped statements in the second code fragment1
    Time elapsed for statement mapping (ms)4.4
    Clone typeType 2
    Mapped Statements
    ID Statement ID Statement
    1
    if (from.isNullable().equalsIgnoreCase(to.isNullable()))
    1
    if (from.isNullable().equalsIgnoreCase(to.isNullable()))
    1
    if (from.getColumnName().equals(to.getColumnName()))
    Differences
    Expression1Expression2Difference
    isNullablegetColumnNameMETHOD_INVOCATION_NAME_MISMATCH
    equalsIgnoreCaseequalsMETHOD_INVOCATION_NAME_MISMATCH
    isNullablegetColumnNameMETHOD_INVOCATION_NAME_MISMATCH
    1
    if (from.getColumnName().equals(to.getColumnName()))
    2
    return null;
    2
    return null;
                                                                                                                                      
    3
    return dialect.getColumnNameAlterSQL(from, to, qualifier, prefs);
    Preondition Violations
    Unmatched statement return dialect.getColumnNameAlterSQL(from,to,qualifier,prefs); cannot be moved before the extracted code, because it has control dependencies from statements that will be extracted
    Unmatched return dialect.getColumnNameAlterSQL(from,to,qualifier,prefs);
    3
    return dialect.getColumnNameAlterSQL(from, to, qualifier, prefs);
    3
    return dialect.getColumnNullableAlterSQL(to, qualifier, prefs);
    3
    return dialect.getColumnNullableAlterSQL(to, qualifier, prefs);
    Preondition Violations
    Unmatched statement return dialect.getColumnNullableAlterSQL(to,qualifier,prefs); cannot be moved before the extracted code, because it has control dependencies from statements that will be extracted
    Unmatched return dialect.getColumnNullableAlterSQL(to,qualifier,prefs);
                                                                                                                                    
    Precondition Violations (5)
    Row Violation
    1Unmatched statement return dialect.getColumnNameAlterSQL(from,to,qualifier,prefs); cannot be moved before the extracted code, because it has control dependencies from statements that will be extracted
    2Unmatched return dialect.getColumnNameAlterSQL(from,to,qualifier,prefs);
    3Unmatched statement return dialect.getColumnNullableAlterSQL(to,qualifier,prefs); cannot be moved before the extracted code, because it has control dependencies from statements that will be extracted
    4Unmatched return dialect.getColumnNullableAlterSQL(to,qualifier,prefs);
    5Not all possible execution flows end in a return statement