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
- 69% duplication:
- 16,465 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
- 11,363 duplicated lines
- 302 duplicates
Duplication per Extension
Duplication per Component (primary)
Duplication Between Components (50+ lines)
Open 3D force graph...
Show more details on duplication between components...
From Component
--> To Component
Duplicated
Lines
File Pairs
Details
lab1/server (8%)
--> lab2/server (87%)
1530
16 file pairs
details...
lab3/order-service (83%)
--> lab4/order-service (95%)
1252
9 file pairs
details...
lab2/server (25%)
--> lab3/order-service (29%)
444
6 file pairs
details...
lab1/server (2%)
--> lab3/order-service (29%)
444
6 file pairs
details...
lab2/server (25%)
--> lab4/order-service (33%)
444
6 file pairs
details...
lab1/server (2%)
--> lab4/order-service (33%)
444
6 file pairs
details...
lab3/order-service (14%)
--> lab4/layers (74%)
214
1 file pair
details...
resources/registration-service (13%)
--> resources/tenant-service (15%)
148
3 file pairs
details...
lab4/order-service (10%)
--> lab4/product-service (13%)
142
3 file pairs
details...
lab2/server (8%)
--> lab4/product-service (13%)
142
3 file pairs
details...
lab1/server (<1%)
--> lab4/product-service (13%)
142
3 file pairs
details...
lab3/order-service (9%)
--> lab4/product-service (13%)
142
3 file pairs
details...
lab3/order-service (9%)
--> resources/lambda-authorizer (26%)
140
2 file pairs
details...
lab4/layers (48%)
--> resources/lambda-authorizer (26%)
140
2 file pairs
details...
resources/auth-service (10%)
--> resources/tenant-service (5%)
56
1 file pair
details...
| From Component --> To Component |
Duplicated Lines |
File Pairs | Details |
|---|---|---|---|
| lab1/server (8%) --> lab2/server (87%) |
1530 | 16 file pairs | details... |
| lab3/order-service (83%) --> lab4/order-service (95%) |
1252 | 9 file pairs | details... |
| lab2/server (25%) --> lab3/order-service (29%) |
444 | 6 file pairs | details... |
| lab1/server (2%) --> lab3/order-service (29%) |
444 | 6 file pairs | details... |
| lab2/server (25%) --> lab4/order-service (33%) |
444 | 6 file pairs | details... |
| lab1/server (2%) --> lab4/order-service (33%) |
444 | 6 file pairs | details... |
| lab3/order-service (14%) --> lab4/layers (74%) |
214 | 1 file pair | details... |
| resources/registration-service (13%) --> resources/tenant-service (15%) |
148 | 3 file pairs | details... |
| lab4/order-service (10%) --> lab4/product-service (13%) |
142 | 3 file pairs | details... |
| lab2/server (8%) --> lab4/product-service (13%) |
142 | 3 file pairs | details... |
| lab1/server (<1%) --> lab4/product-service (13%) |
142 | 3 file pairs | details... |
| lab3/order-service (9%) --> lab4/product-service (13%) |
142 | 3 file pairs | details... |
| lab3/order-service (9%) --> resources/lambda-authorizer (26%) |
140 | 2 file pairs | details... |
| lab4/layers (48%) --> resources/lambda-authorizer (26%) |
140 | 2 file pairs | details... |
| resources/auth-service (10%) --> resources/tenant-service (5%) |
56 | 1 file pair | details... |
Longest Duplicates
The list of 20 longest duplicates.
| Size | # | Folders | Files | Lines | Code |
|---|---|---|---|---|---|
| 1952 | x 2 | lab1/server/src/main/resources/public/jslab1/server/src/main/resources/public/js |  bootstrap.bundle.jsbootstrap.esm.js |
4905:7878 (43%)2299:5272 (57%) | view |
| 1451 | x 2 | lab1/server/src/main/resources/public/jslab1/server/src/main/resources/public/js | bootstrap.bundle.jsbootstrap.esm.js |
12:2294 (32%)8:2290 (42%) | view |
| 178 | x 2 | lab1/server/src/main/jav.../saasfactory/repositorylab2/server/src/main/jav.../saasfactory/repository |  OrderDaoImpl.javaOrderDaoImpl.java |
73:298 (84%)72:297 (85%) | view |
| 174 | x 2 | lab3/order-service/src/m...ws/partners/saasfactorylab4/order-service/src/m...ws/partners/saasfactory | DynamoDbHelper.javaDynamoDbHelper.java |
25:281 (100%)25:281 (100%) | view |
| 107 | x 2 | lab3/order-service/src/m...ws/partners/saasfactorylab4/layers/serverless-s...ws/partners/saasfactory | TokenManager.javaTokenManager.java |
43:200 (100%)43:200 (100%) | view |
| 83 | x 2 | lab1/server/src/main/jav.../saasfactory/repositorylab2/server/src/main/jav.../saasfactory/repository | ProductDaoImpl.javaProductDaoImpl.java |
37:143 (100%)37:143 (100%) | view |
| 72 | x 2 | lab1/server/src/main/jav...ers/saasfactory/servicelab2/server/src/main/jav...ers/saasfactory/service | ProductServiceImpl.javaProductServiceImpl.java |
15:101 (100%)31:117 (100%) | view |
| 68 | x 2 | lab2/server/src/main/jav...ners/saasfactory/domainlab3/order-service/src/m...ws/partners/saasfactory | Product.javaProduct.java |
22:121 (100%)22:121 (100%) | view |
| 68 | x 2 | lab1/server/src/main/jav...ners/saasfactory/domainlab3/order-service/src/m...ws/partners/saasfactory | Product.javaProduct.java |
22:121 (100%)22:121 (100%) | view |
| 68 | x 2 | lab3/order-service/src/m...ws/partners/saasfactorylab4/order-service/src/m...ws/partners/saasfactory | Product.javaProduct.java |
22:121 (100%)22:121 (100%) | view |
| 68 | x 2 | lab2/server/src/main/jav...ners/saasfactory/domainlab4/order-service/src/m...ws/partners/saasfactory | Product.javaProduct.java |
22:121 (100%)22:121 (100%) | view |
| 68 | x 2 | lab1/server/src/main/jav...ners/saasfactory/domainlab2/server/src/main/jav...ners/saasfactory/domain | Product.javaProduct.java |
22:121 (100%)22:121 (100%) | view |
| 68 | x 2 | lab1/server/src/main/jav...ners/saasfactory/domainlab4/order-service/src/m...ws/partners/saasfactory | Product.javaProduct.java |
22:121 (100%)22:121 (100%) | view |
| 59 | x 2 | lab3/order-service/src/m...ws/partners/saasfactorylab4/order-service/src/m...ws/partners/saasfactory | OrderService.javaOrderService.java |
38:110 (55%)38:110 (54%) | view |
| 56 | x 2 | lab1/server/src/main/jav.../saasfactory/repositorylab2/server/src/main/jav.../saasfactory/repository | CategoryDaoImpl.javaCategoryDaoImpl.java |
36:112 (100%)36:112 (100%) | view |
| 56 | x 2 | lab3/order-service/src/m...ws/partners/saasfactorylab4/order-service/src/m...ws/partners/saasfactory | Order.javaOrder.java |
24:118 (100%)24:118 (100%) | view |
| 54 | x 2 | lab2/client/src/components/modals/componentlab2/client/src/components/modals/component | addOrderModal.jseditOrderModal.js |
69:138 (26%)87:156 (24%) | view |
| 54 | x 2 | lab1/server/src/main/jav...ners/saasfactory/domainlab2/server/src/main/jav...ners/saasfactory/domain | Order.javaOrder.java |
25:116 (100%)25:116 (100%) | view |
| 48 | x 2 | resources/custom-resourc...ws/partners/saasfactoryresources/custom-resourc...ws/partners/saasfactory | CheckRole.javaSSMPutParamSecure.java |
96:167 (53%)150:221 (38%) | view |
| 48 | x 2 | resources/custom-resourc...ws/partners/saasfactoryresources/custom-resourc...ws/partners/saasfactory | CheckRole.javaCreateKeyPair.java |
96:167 (53%)87:158 (57%) | view |
Duplicated Units
The list of top 20 duplicated units.
| Size | # | Folders | Files | Lines | Code |
|---|---|---|---|---|---|
| 506 | x 2 | lab1/server/src/main/resources/public/jslab1/server/src/main/resources/public/js | bootstrap.esm.jsbootstrap.bundle.js |
3641:4278 6247:6884 | view |
| 386 | x 2 | lab1/server/src/main/resources/public/jslab1/server/src/main/resources/public/js | bootstrap.esm.jsbootstrap.bundle.js |
1339:1835 1343:1839 | view |
| 353 | x 2 | lab1/server/src/main/resources/public/jslab1/server/src/main/resources/public/js | bootstrap.esm.jsbootstrap.bundle.js |
2895:3368 5501:5974 | view |
| 296 | x 2 | lab1/server/src/main/resources/public/jslab1/server/src/main/resources/public/js | bootstrap.esm.jsbootstrap.bundle.js |
2376:2791 4982:5397 | view |
| 236 | x 2 | lab1/server/src/main/resources/public/jslab1/server/src/main/resources/public/js | bootstrap.esm.jsbootstrap.bundle.js |
1920:2237 1924:2241 | view |
| 177 | x 2 | lab1/server/src/main/resources/public/jslab1/server/src/main/resources/public/js | bootstrap.esm.jsbootstrap.bundle.js |
4547:4778 7153:7384 | view |
| 126 | x 2 | lab1/server/src/main/resources/public/jslab1/server/src/main/resources/public/js | bootstrap.esm.jsbootstrap.bundle.js |
4853:5016 7459:7622 | view |
| 120 | x 2 | lab1/server/src/main/resources/public/jslab1/server/src/main/resources/public/js | bootstrap.esm.jsbootstrap.bundle.js |
5094:5253 7700:7859 | view |
| 87 | x 2 | lab1/server/src/main/resources/public/jslab1/server/src/main/resources/public/js | bootstrap.esm.jsbootstrap.bundle.js |
843:960 847:964 | view |
| 98 | x 2 | lab1/server/src/main/resources/public/jslab1/server/src/main/resources/public/js | bootstrap.esm.jsbootstrap.bundle.js |
4353:4474 6959:7080 | view |
| 67 | x 2 | lab1/server/src/main/resources/public/jslab1/server/src/main/resources/public/js | bootstrap.esm.jsbootstrap.bundle.js |
1026:1112 1030:1116 | view |
| 56 | x 2 | lab1/server/src/main/jav.../saasfactory/repositorylab2/server/src/main/jav.../saasfactory/repository | OrderDaoImpl.javaOrderDaoImpl.java |
82:146 81:145 | view |
| 54 | x 2 | lab1/server/src/main/resources/public/jslab1/server/src/main/resources/public/js | bootstrap.esm.jsbootstrap.bundle.js |
671:735 675:739 | view |
| 33 | x 2 | lab4/order-service/src/m...ws/partners/saasfactorylab3/order-service/src/m...ws/partners/saasfactory | DynamoDbHelper.javaDynamoDbHelper.java |
249:282 249:282 | view |
| 33 | x 2 | lab1/server/src/main/jav.../saasfactory/repositorylab2/server/src/main/jav.../saasfactory/repository | OrderDaoImpl.javaOrderDaoImpl.java |
148:184 147:183 | view |
| 32 | x 2 | lab4/order-service/src/m...ws/partners/saasfactorylab3/order-service/src/m...ws/partners/saasfactory | DynamoDbHelper.javaDynamoDbHelper.java |
115:147 115:147 | view |
| 32 | x 4 | resources/custom-resourc...ws/partners/saasfactoryresources/custom-resourc...ws/partners/saasfactoryresources/custom-resourc...ws/partners/saasfactoryresources/custom-resourc...ws/partners/saasfactory | CreateKeyPair.javaClearS3Bucket.javaCheckRole.javaSSMPutParamSecure.java |
122:159 161:198 131:168 185:222 | view |
| 31 | x 2 | lab1/server/src/main/resources/public/jslab1/server/src/main/resources/public/js | bootstrap.esm.jsbootstrap.bundle.js |
631:670 635:674 | view |
| 31 | x 2 | lab1/server/src/main/resources/public/jslab1/server/src/main/resources/public/js | bootstrap.esm.jsbootstrap.bundle.js |
3508:3547 6114:6153 | view |
| 30 | x 2 | lab1/server/src/main/jav.../saasfactory/repositorylab2/server/src/main/jav.../saasfactory/repository | OrderDaoImpl.javaOrderDaoImpl.java |
240:270 239:269 | view |