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
- 45% duplication:
- 2,324 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
- 1,059 duplicated lines
- 300 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
aws-connect-quickconnect/src (36%)
--> aws-connect-user/src (34%)
308
17 file pairs
details...
aws-connect-contactflow/src (50%)
--> aws-connect-contactflowmodule/src (51%)
302
9 file pairs
details...
aws-connect-contactflow/src (44%)
--> aws-connect-user/src (29%)
264
10 file pairs
details...
aws-connect-contactflow/src (41%)
--> aws-connect-quickconnect/src (29%)
248
10 file pairs
details...
aws-connect-hoursofoperation/src (40%)
--> aws-connect-user/src (27%)
246
12 file pairs
details...
aws-connect-hoursofoperation/src (40%)
--> aws-connect-quickconnect/src (29%)
246
12 file pairs
details...
aws-connect-contactflowmodule/src (41%)
--> aws-connect-hoursofoperation/src (39%)
242
8 file pairs
details...
aws-connect-contactflow/src (40%)
--> aws-connect-hoursofoperation/src (39%)
242
8 file pairs
details...
aws-connect-user/src (25%)
--> aws-connect-userhierarchygroup/src (53%)
230
17 file pairs
details...
aws-connect-contactflowmodule/src (39%)
--> aws-connect-quickconnect/src (27%)
230
10 file pairs
details...
aws-connect-contactflowmodule/src (38%)
--> aws-connect-user/src (25%)
228
10 file pairs
details...
aws-connect-quickconnect/src (25%)
--> aws-connect-userhierarchygroup/src (49%)
212
17 file pairs
details...
aws-connect-contactflow/src (32%)
--> aws-connect-userhierarchygroup/src (44%)
191
11 file pairs
details...
aws-connect-hoursofoperation/src (29%)
--> aws-connect-userhierarchygroup/src (41%)
180
12 file pairs
details...
aws-connect-contactflowmodule/src (30%)
--> aws-connect-userhierarchygroup/src (41%)
179
11 file pairs
details...
aws-connect-quickconnect (57%)
--> aws-connect-userhierarchygroup (60%)
64
2 file pairs
details...
aws-connect-contactflow (57%)
--> aws-connect-hoursofoperation (58%)
64
2 file pairs
details...
aws-connect-contactflow (57%)
--> aws-connect-userhierarchygroup (60%)
64
2 file pairs
details...
aws-connect-contactflowmodule (57%)
--> aws-connect-hoursofoperation (58%)
64
2 file pairs
details...
aws-connect-contactflow (57%)
--> aws-connect-contactflowmodule (57%)
64
2 file pairs
details...
aws-connect-hoursofoperation (58%)
--> aws-connect-quickconnect (57%)
64
2 file pairs
details...
aws-connect-user (54%)
--> aws-connect-userhierarchygroup (60%)
64
2 file pairs
details...
aws-connect-hoursofoperation (58%)
--> aws-connect-user (54%)
64
2 file pairs
details...
aws-connect-hoursofoperation (58%)
--> aws-connect-userhierarchygroup (60%)
64
2 file pairs
details...
aws-connect-contactflowmodule (57%)
--> aws-connect-userhierarchygroup (60%)
64
2 file pairs
details...
aws-connect-contactflowmodule (57%)
--> aws-connect-quickconnect (57%)
64
2 file pairs
details...
aws-connect-quickconnect (57%)
--> aws-connect-user (54%)
64
2 file pairs
details...
aws-connect-contactflowmodule (57%)
--> aws-connect-user (54%)
64
2 file pairs
details...
aws-connect-contactflow (57%)
--> aws-connect-quickconnect (57%)
64
2 file pairs
details...
aws-connect-contactflow (57%)
--> aws-connect-user (54%)
64
2 file pairs
details...
| From Component --> To Component |
Duplicated Lines |
File Pairs | Details |
|---|---|---|---|
| aws-connect-quickconnect/src (36%) --> aws-connect-user/src (34%) |
308 | 17 file pairs | details... |
| aws-connect-contactflow/src (50%) --> aws-connect-contactflowmodule/src (51%) |
302 | 9 file pairs | details... |
| aws-connect-contactflow/src (44%) --> aws-connect-user/src (29%) |
264 | 10 file pairs | details... |
| aws-connect-contactflow/src (41%) --> aws-connect-quickconnect/src (29%) |
248 | 10 file pairs | details... |
| aws-connect-hoursofoperation/src (40%) --> aws-connect-user/src (27%) |
246 | 12 file pairs | details... |
| aws-connect-hoursofoperation/src (40%) --> aws-connect-quickconnect/src (29%) |
246 | 12 file pairs | details... |
| aws-connect-contactflowmodule/src (41%) --> aws-connect-hoursofoperation/src (39%) |
242 | 8 file pairs | details... |
| aws-connect-contactflow/src (40%) --> aws-connect-hoursofoperation/src (39%) |
242 | 8 file pairs | details... |
| aws-connect-user/src (25%) --> aws-connect-userhierarchygroup/src (53%) |
230 | 17 file pairs | details... |
| aws-connect-contactflowmodule/src (39%) --> aws-connect-quickconnect/src (27%) |
230 | 10 file pairs | details... |
| aws-connect-contactflowmodule/src (38%) --> aws-connect-user/src (25%) |
228 | 10 file pairs | details... |
| aws-connect-quickconnect/src (25%) --> aws-connect-userhierarchygroup/src (49%) |
212 | 17 file pairs | details... |
| aws-connect-contactflow/src (32%) --> aws-connect-userhierarchygroup/src (44%) |
191 | 11 file pairs | details... |
| aws-connect-hoursofoperation/src (29%) --> aws-connect-userhierarchygroup/src (41%) |
180 | 12 file pairs | details... |
| aws-connect-contactflowmodule/src (30%) --> aws-connect-userhierarchygroup/src (41%) |
179 | 11 file pairs | details... |
| aws-connect-quickconnect (57%) --> aws-connect-userhierarchygroup (60%) |
64 | 2 file pairs | details... |
| aws-connect-contactflow (57%) --> aws-connect-hoursofoperation (58%) |
64 | 2 file pairs | details... |
| aws-connect-contactflow (57%) --> aws-connect-userhierarchygroup (60%) |
64 | 2 file pairs | details... |
| aws-connect-contactflowmodule (57%) --> aws-connect-hoursofoperation (58%) |
64 | 2 file pairs | details... |
| aws-connect-contactflow (57%) --> aws-connect-contactflowmodule (57%) |
64 | 2 file pairs | details... |
| aws-connect-hoursofoperation (58%) --> aws-connect-quickconnect (57%) |
64 | 2 file pairs | details... |
| aws-connect-user (54%) --> aws-connect-userhierarchygroup (60%) |
64 | 2 file pairs | details... |
| aws-connect-hoursofoperation (58%) --> aws-connect-user (54%) |
64 | 2 file pairs | details... |
| aws-connect-hoursofoperation (58%) --> aws-connect-userhierarchygroup (60%) |
64 | 2 file pairs | details... |
| aws-connect-contactflowmodule (57%) --> aws-connect-userhierarchygroup (60%) |
64 | 2 file pairs | details... |
| aws-connect-contactflowmodule (57%) --> aws-connect-quickconnect (57%) |
64 | 2 file pairs | details... |
| aws-connect-quickconnect (57%) --> aws-connect-user (54%) |
64 | 2 file pairs | details... |
| aws-connect-contactflowmodule (57%) --> aws-connect-user (54%) |
64 | 2 file pairs | details... |
| aws-connect-contactflow (57%) --> aws-connect-quickconnect (57%) |
64 | 2 file pairs | details... |
| aws-connect-contactflow (57%) --> aws-connect-user (54%) |
64 | 2 file pairs | details... |
Longest Duplicates
The list of 20 longest duplicates.
| Size | # | Folders | Files | Lines | Code |
|---|---|---|---|---|---|
| 47 | x 2 | aws-connect-hoursofopera...onnect/hoursofoperationaws-connect-userhierarch...nect/userhierarchygroup |  BaseHandlerStd.javaBaseHandlerStd.java |
40:95 (62%)34:88 (90%) | view |
| 45 | x 2 | aws-connect-quickconnect...on/connect/quickconnectaws-connect-userhierarch...nect/userhierarchygroup | BaseHandlerStd.javaBaseHandlerStd.java |
56:107 (39%)37:88 (86%) | view |
| 45 | x 2 | aws-connect-hoursofopera...onnect/hoursofoperationaws-connect-user/src/mai...are/amazon/connect/user | BaseHandlerStd.javaBaseHandlerStd.java |
44:95 (60%)44:95 (60%) | view |
| 45 | x 2 | aws-connect-user/src/mai...are/amazon/connect/useraws-connect-userhierarch...nect/userhierarchygroup | BaseHandlerStd.javaBaseHandlerStd.java |
44:95 (60%)37:88 (86%) | view |
| 45 | x 2 | aws-connect-hoursofopera...onnect/hoursofoperationaws-connect-quickconnect...on/connect/quickconnect | BaseHandlerStd.javaBaseHandlerStd.java |
44:95 (60%)56:107 (39%) | view |
| 45 | x 2 | aws-connect-quickconnect...on/connect/quickconnectaws-connect-user/src/mai...are/amazon/connect/user | BaseHandlerStd.javaBaseHandlerStd.java |
56:107 (39%)44:95 (60%) | view |
| 29 | x 2 | aws-connect-contactflow/...zon/connect/contactflowaws-connect-contactflowm...nnect/contactflowmodule | BaseHandlerStd.javaBaseHandlerStd.java |
66:100 (53%)66:100 (53%) | view |
| 24 | x 2 | aws-connect-quickconnectaws-connect-userhierarchygroup |  resource-role.yamlresource-role.yaml |
1:25 (66%)1:25 (72%) | view |
| 24 | x 2 | aws-connect-contactflowaws-connect-hoursofoperation | resource-role.yamlresource-role.yaml |
1:25 (66%)1:25 (68%) | view |
| 24 | x 2 | aws-connect-contactflowaws-connect-userhierarchygroup | resource-role.yamlresource-role.yaml |
1:25 (66%)1:25 (72%) | view |
| 24 | x 2 | aws-connect-contactflowmoduleaws-connect-hoursofoperation | resource-role.yamlresource-role.yaml |
1:25 (66%)1:25 (68%) | view |
| 24 | x 2 | aws-connect-contactflowaws-connect-contactflowmodule | resource-role.yamlresource-role.yaml |
1:25 (66%)1:25 (66%) | view |
| 24 | x 2 | aws-connect-hoursofoperationaws-connect-quickconnect | resource-role.yamlresource-role.yaml |
1:25 (68%)1:25 (66%) | view |
| 24 | x 2 | aws-connect-useraws-connect-userhierarchygroup | resource-role.yamlresource-role.yaml |
1:25 (61%)1:25 (72%) | view |
| 24 | x 2 | aws-connect-contactflowm...nnect/contactflowmoduleaws-connect-hoursofopera...onnect/hoursofoperation | BaseHandlerStd.javaBaseHandlerStd.java |
36:64 (44%)38:67 (32%) | view |
| 24 | x 2 | aws-connect-hoursofoperationaws-connect-user | resource-role.yamlresource-role.yaml |
1:25 (68%)1:25 (61%) | view |
| 24 | x 2 | aws-connect-hoursofoperationaws-connect-userhierarchygroup | resource-role.yamlresource-role.yaml |
1:25 (68%)1:25 (72%) | view |
| 24 | x 2 | aws-connect-contactflowmoduleaws-connect-userhierarchygroup | resource-role.yamlresource-role.yaml |
1:25 (66%)1:25 (72%) | view |
| 24 | x 2 | aws-connect-contactflowmoduleaws-connect-quickconnect | resource-role.yamlresource-role.yaml |
1:25 (66%)1:25 (66%) | view |
| 24 | x 2 | aws-connect-quickconnectaws-connect-user | resource-role.yamlresource-role.yaml |
1:25 (66%)1:25 (61%) | view |
Duplicated Units
The list of top 6 duplicated units.
| Size | # | Folders | Files | Lines | Code |
|---|---|---|---|---|---|
| 24 | x 4 | aws-connect-userhierarch...nect/userhierarchygroupaws-connect-user/src/mai...are/amazon/connect/useraws-connect-quickconnect...on/connect/quickconnectaws-connect-hoursofopera...onnect/hoursofoperation | BaseHandlerStd.javaBaseHandlerStd.javaBaseHandlerStd.javaBaseHandlerStd.java |
51:76 58:83 70:95 58:83 | view |
| 11 | x 6 | aws-connect-userhierarch...nect/userhierarchygroupaws-connect-user/src/mai...are/amazon/connect/useraws-connect-quickconnect...on/connect/quickconnectaws-connect-hoursofopera...onnect/hoursofoperationaws-connect-contactflowm...nnect/contactflowmoduleaws-connect-contactflow/...zon/connect/contactflow | BaseHandlerStd.javaBaseHandlerStd.javaBaseHandlerStd.javaBaseHandlerStd.javaBaseHandlerStd.javaBaseHandlerStd.java |
38:49 45:56 57:68 45:56 42:53 42:53 | view |
| 11 | x 6 | aws-connect-userhierarch...nect/userhierarchygroupaws-connect-user/src/mai...are/amazon/connect/useraws-connect-quickconnect...on/connect/quickconnectaws-connect-hoursofopera...onnect/hoursofoperationaws-connect-contactflowm...nnect/contactflowmoduleaws-connect-contactflow/...zon/connect/contactflow | BaseHandlerStd.javaBaseHandlerStd.javaBaseHandlerStd.javaBaseHandlerStd.javaBaseHandlerStd.javaBaseHandlerStd.java |
78:89 85:96 97:108 85:96 82:93 82:93 | view |
| 8 | x 2 | aws-connect-contactflowm...nnect/contactflowmoduleaws-connect-contactflow/...zon/connect/contactflow | ClientBuilder.javaClientBuilder.java |
28:36 28:36 | view |
| 6 | x 5 | aws-connect-user/src/mai...are/amazon/connect/useraws-connect-quickconnect...on/connect/quickconnectaws-connect-hoursofopera...onnect/hoursofoperationaws-connect-contactflowm...nnect/contactflowmoduleaws-connect-contactflow/...zon/connect/contactflow | BaseHandlerStd.javaBaseHandlerStd.javaBaseHandlerStd.javaBaseHandlerStd.javaBaseHandlerStd.java |
120:126 157:163 126:132 95:101 95:101 | view |
| 6 | x 5 | aws-connect-user/src/mai...are/amazon/connect/useraws-connect-quickconnect...on/connect/quickconnectaws-connect-hoursofopera...onnect/hoursofoperationaws-connect-contactflowm...nnect/contactflowmoduleaws-connect-contactflow/...zon/connect/contactflow | Configuration.javaConfiguration.javaConfiguration.javaConfiguration.javaConfiguration.java |
13:19 13:19 13:19 13:19 13:19 | view |