Places in code with 6 or more lines that are exactly the same.
Intro
- For duplication, we look at places in code where there are 6 or more lines of code that are exactly the same.
- Before duplication is calculated, the code is cleaned to remove empty lines, comments, and frequently duplicated constructs such as imports.
- You should aim at having as little as possible (<5%) of duplicated code as high-level of duplication can lead to maintenance difficulties, poor factoring, and logical contradictions.
- To learn more about duplications and techniques for eliminating duplication, Sokrates recommends the following resources:
- Avoid Repetition, MartinFlower.com (IEEE Software article)
- Refactoring duplicated code, sourcemaking.com
- Beck Design Rules, MartinFowler.com
- DRY (Don't Repeat Yourself) Principle, Wikipedia
- The Cut-and-Paste Programming Software Development Anti-Pattern, sourcemaking.com
- Code Smells / Duplicated Code, Jeff Atwood, codinghorror.com:
- "Duplicated code is the bane of software development. Stamp out duplication whenever possible. You should always be on the lookout for more subtle cases of near-duplication, too. Don't Repeat Yourself!"
- Reducing Coupling, MartinFlower.com (IEEE Software article):
- "There are several ways to describe coupling, but it boils down to this: If changing one module in a program requires changing another module, then coupling exists. ... Duplication always implies coupling, because changing one piece of duplicate code implies changing the other."
Duplication Overall
- 5% duplication:
- 43,458 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
- 2,521 duplicated lines
- 198 duplicates
Duplication per Extension
Duplication per Component (primary)
Longest Duplicates
The list of 20 longest duplicates.
| Size | # | Folders | Files | Lines | Code |
|---|---|---|---|---|---|
| 46 | x 2 | src/main/java/com/microsoft/sqlserver/jdbcsrc/main/java/com/microsoft/sqlserver/jdbc |  SQLServerPreparedStatement.javaSQLServerPreparedStatement.java |
1989:2060 (2%)2146:2217 (2%) | view |
| 22 | x 2 | src/main/java/com/microsoft/sqlserver/jdbcsrc/main/java/com/microsoft/sqlserver/jdbc | SQLServerBulkBatchInsertRecord.javaSQLServerBulkCSVFileRecord.java |
301:334 (10%)460:493 (7%) | view |
| 20 | x 2 | src/main/java/com/microsoft/sqlserver/jdbcsrc/main/java/com/microsoft/sqlserver/jdbc | Geography.javaGeometry.java |
161:213 (23%)165:217 (23%) | view |
| 20 | x 2 | src/main/java/com/microsoft/sqlserver/jdbcsrc/main/java/com/microsoft/sqlserver/jdbc | IOBuffer.javaUtil.java |
7417:7440 (<1%)747:770 (3%) | view |
| 19 | x 2 | src/main/java/com/microsoft/sqlserver/jdbcsrc/main/java/com/microsoft/sqlserver/jdbc | SQLServerBulkBatchInsertRecord.javaSQLServerBulkCSVFileRecord.java |
336:367 (9%)495:527 (6%) | view |
| 18 | x 2 | src/main/java/com/microsoft/sqlserver/jdbcsrc/main/java/com/microsoft/sqlserver/jdbc | IOBuffer.javaIOBuffer.java |
6149:6188 (<1%)6309:6348 (<1%) | view |
| 17 | x 2 | src/main/java/com/microsoft/sqlserver/jdbcsrc/main/java/com/microsoft/sqlserver/jdbc | DDC.javaDDC.java |
385:401 (1%)428:444 (1%) | view |
| 16 | x 2 | src/main/java/com/microsoft/sqlserver/jdbcsrc/main/java/com/microsoft/sqlserver/jdbc | IOBuffer.javaIOBuffer.java |
5221:5237 (<1%)5456:5472 (<1%) | view |
| 16 | x 2 | src/main/java/com/microsoft/sqlserver/jdbcsrc/main/java/com/microsoft/sqlserver/jdbc | SQLServerResultSet.javaSQLServerStatement.java |
440:458 (<1%)2330:2348 (1%) | view |
| 15 | x 2 | src/main/java/com/microsoft/sqlserver/jdbcsrc/main/java/com/microsoft/sqlserver/jdbc | SQLServerColumnEncryptionAzureKeyVaul...SQLServerColumnEncryptionJavaKeyStore... |
555:581 (3%)238:258 (7%) | view |
| 15 | x 2 | src/main/java/com/microsoft/sqlserver/jdbcsrc/main/java/com/microsoft/sqlserver/jdbc | Geography.javaGeometry.java |
237:288 (17%)241:292 (17%) | view |
| 15 | x 2 | src/main/java/com/microsoft/sqlserver/jdbcsrc/main/java/com/microsoft/sqlserver/jdbc | SQLServerPreparedStatement.javaSQLServerResultSet.java |
1621:1639 (<1%)4081:4099 (<1%) | view |
| 15 | x 2 | src/main/java/com/microsoft/sqlserver/jdbcsrc/main/java/com/microsoft/sqlserver/jdbc | SQLServerStatement.javaSQLServerStatement.java |
1841:1869 (1%)1918:1946 (1%) | view |
| 14 | x 2 | src/main/java/com/microsoft/sqlserver/jdbcsrc/main/java/com/microsoft/sqlserver/jdbc | SQLServerConnection.javaSQLServerStatement.java |
1085:1103 (<1%)2430:2448 (1%) | view |
| 12 | x 2 | src/main/java/com/microsoft/sqlserver/jdbcsrc/main/java/com/microsoft/sqlserver/jdbc | Geography.javaGeometry.java |
53:70 (14%)57:74 (14%) | view |
| 12 | x 2 | src/main/java/com/microsoft/sqlserver/jdbcsrc/main/java/com/microsoft/sqlserver/jdbc | SQLServerDatabaseMetaData.javaSQLServerParameterMetaData.java |
156:170 (<1%)379:393 (3%) | view |
| 12 | x 2 | src/main/java/com/microsoft/sqlserver/jdbcsrc/main/java/com/microsoft/sqlserver/jdbc | IOBuffer.javaIOBuffer.java |
6108:6136 (<1%)6257:6285 (<1%) | view |
| 12 | x 2 | src/main/java/com/microsoft/sqlserver/jdbcsrc/main/java/com/microsoft/sqlserver/jdbc | Column.javaParameter.java |
380:391 (5%)84:95 (1%) | view |
| 12 | x 2 | src/main/java/com/microsoft/sqlserver/jdbcsrc/main/java/com/microsoft/sqlserver/jdbc | SQLServerBulkCopy.javaSQLServerBulkCopy.java |
2797:2810 (<1%)2814:2827 (<1%) | view |
| 12 | x 2 | src/main/java/com/microsoft/sqlserver/jdbcsrc/main/java/com/microsoft/sqlserver/jdbc | SQLServerDatabaseMetaData.javaSQLServerResultSetMetaData.java |
156:170 (<1%)70:84 (6%) | view |
Duplicated Units
The list of top 20 duplicated units.
| Size | # | Folders | Files | Lines | Code |
|---|---|---|---|---|---|
| 14 | x 2 | src/main/java/com/microsoft/sqlserver/jdbcsrc/main/java/com/microsoft/sqlserver/jdbc | Geography.javaGeometry.java |
52:71 56:75 | view |
| 13 | x 2 | src/main/java/com/microsoft/sqlserver/jdbcsrc/main/java/com/microsoft/sqlserver/jdbc | Column.javaParameter.java |
380:393 84:97 | view |
| 12 | x 2 | src/main/java/com/microsoft/sqlserver/jdbcsrc/main/java/com/microsoft/sqlserver/jdbc | KeyStoreProviderCommon.javaSQLServerColumnEncryptionAzureKeyVaul... |
161:175 442:456 | view |
| 11 | x 2 | src/main/java/com/microsoft/sqlserver/jdbcsrc/main/java/com/microsoft/sqlserver/jdbc | Geography.javaGeometry.java |
161:174 165:178 | view |
| 10 | x 2 | src/main/java/com/microsoft/sqlserver/jdbcsrc/main/java/com/microsoft/sqlserver/jdbc | SQLServerResultSet.javaSQLServerStatement.java |
449:459 2339:2349 | view |
| 8 | x 3 | src/main/java/com/microsoft/sqlserver/jdbcsrc/main/java/com/microsoft/sqlserver/jdbcsrc/main/java/com/microsoft/sqlserver/jdbc | SQLServerDatabaseMetaData.javaSQLServerParameterMetaData.javaSQLServerResultSetMetaData.java |
163:171 386:394 77:85 | view |
| 8 | x 2 | src/main/java/com/microsoft/sqlserver/jdbcsrc/main/java/com/microsoft/sqlserver/jdbc | SQLServerSpatialDatatype.javaSQLServerSpatialDatatype.java |
1796:1804 1806:1814 | view |
| 7 | x 2 | src/main/java/com/microsoft/sqlserver/jdbcsrc/main/java/com/microsoft/sqlserver/jdbc | SQLServerCallableStatement.javaSQLServerCallableStatement.java |
1457:1464 1517:1524 | view |
| 7 | x 2 | src/main/java/com/microsoft/sqlserver/jdbcsrc/main/java/com/microsoft/sqlserver/jdbc | SQLServerCallableStatement.javaSQLServerCallableStatement.java |
1669:1676 1679:1686 | view |
| 7 | x 2 | src/main/java/com/microsoft/sqlserver/jdbcsrc/main/java/com/microsoft/sqlserver/jdbc | SQLServerCallableStatement.javaSQLServerCallableStatement.java |
1689:1696 1728:1735 | view |
| 7 | x 2 | src/main/java/com/microsoft/sqlserver/jdbcsrc/main/java/com/microsoft/sqlserver/jdbc | SQLServerCallableStatement.javaSQLServerCallableStatement.java |
1699:1706 1709:1716 | view |
| 7 | x 2 | src/main/java/com/microsoft/sqlserver/jdbcsrc/main/java/com/microsoft/sqlserver/jdbc | SQLServerConnectionPoolDataSource.javaSQLServerXADataSource.java |
48:55 98:105 | view |
| 7 | x 2 | src/main/java/com/microsoft/sqlserver/jdbcsrc/main/java/com/microsoft/sqlserver/jdbc | SQLServerResultSet.javaSQLServerResultSet.java |
3926:3935 5133:5142 | view |
| 6 | x 2 | src/main/java/com/microsoft/sqlserver/jdbcsrc/main/java/com/microsoft/sqlserver/jdbc | SQLServerCallableStatement.javaSQLServerResultSet.java |
936:942 2672:2678 | view |
| 6 | x 2 | src/main/java/com/microsoft/sqlserver/jdbcsrc/main/java/com/microsoft/sqlserver/jdbc | SQLServerDatabaseMetaData.javaSQLServerDatabaseMetaData.java |
2249:2255 2258:2264 | view |
| 6 | x 2 | src/main/java/com/microsoft/sqlserver/jdbcsrc/main/java/com/microsoft/sqlserver/jdbc | SQLServerPreparedStatement.javaSQLServerPreparedStatement.java |
2927:2933 3017:3023 | view |
| 6 | x 2 | src/main/java/com/microsoft/sqlserver/jdbcsrc/main/java/com/microsoft/sqlserver/jdbc | SQLServerPreparedStatement.javaSQLServerPreparedStatement.java |
3182:3188 3191:3197 | view |
| 6 | x 2 | src/main/java/com/microsoft/sqlserver/jdbcsrc/main/java/com/microsoft/sqlserver/jdbc | SQLServerResultSet.javaSQLServerResultSet.java |
2949:2955 2967:2973 | view |
| 6 | x 2 | src/main/java/com/microsoft/sqlserver/jdbcsrc/main/java/com/microsoft/sqlserver/jdbc | SQLServerResultSet.javaSQLServerResultSet.java |
2958:2964 2976:2982 | view |
| 6 | x 2 | src/main/java/com/microsoft/sqlserver/jdbcsrc/main/java/com/microsoft/sqlserver/jdbc | SQLServerResultSet.javaSQLServerResultSet.java |
3031:3042 3045:3057 | view |