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
- 38% duplication:
- 2,530 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
- 972 duplicated lines
- 401 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-iotwireless-deviceprofile/src (43%)
--> aws-iotwireless-serviceprofile/src (42%)
230
11 file pairs
details...
aws-iotwireless-wirelessdevice/src (22%)
--> aws-iotwireless-wirelessgateway/src (33%)
216
14 file pairs
details...
aws-iotwireless-deviceprofile/src (38%)
--> aws-iotwireless-taskdefinition/src (31%)
203
12 file pairs
details...
aws-iotwireless-taskdefinition/src (29%)
--> aws-iotwireless-wirelessgateway/src (29%)
191
15 file pairs
details...
aws-iotwireless-deviceprofile/src (34%)
--> aws-iotwireless-wirelessgateway/src (28%)
182
16 file pairs
details...
aws-iotwireless-serviceprofile/src (33%)
--> aws-iotwireless-taskdefinition/src (28%)
181
11 file pairs
details...
aws-iotwireless-taskdefinition/src (27%)
--> aws-iotwireless-wirelessdevice/src (18%)
177
14 file pairs
details...
aws-iotwireless-destination/src (32%)
--> aws-iotwireless-wirelessgateway/src (26%)
172
16 file pairs
details...
aws-iotwireless-partneraccount/src (28%)
--> aws-iotwireless-wirelessgateway/src (26%)
172
16 file pairs
details...
aws-iotwireless-destination/src (32%)
--> aws-iotwireless-wirelessdevice/src (18%)
172
16 file pairs
details...
aws-iotwireless-destination/src (32%)
--> aws-iotwireless-taskdefinition/src (26%)
171
14 file pairs
details...
aws-iotwireless-serviceprofile/src (31%)
--> aws-iotwireless-wirelessdevice/src (17%)
168
15 file pairs
details...
aws-iotwireless-deviceprofile/src (31%)
--> aws-iotwireless-wirelessdevice/src (17%)
168
15 file pairs
details...
aws-iotwireless-serviceprofile/src (31%)
--> aws-iotwireless-wirelessgateway/src (26%)
168
15 file pairs
details...
aws-iotwireless-destination/src (31%)
--> aws-iotwireless-serviceprofile/src (30%)
164
14 file pairs
details...
aws-iotwireless-deviceprofile/src (30%)
--> aws-iotwireless-partneraccount/src (26%)
162
15 file pairs
details...
aws-iotwireless-partneraccount/src (26%)
--> aws-iotwireless-taskdefinition/src (25%)
161
16 file pairs
details...
aws-iotwireless-destination/src (30%)
--> aws-iotwireless-partneraccount/src (26%)
161
15 file pairs
details...
aws-iotwireless-destination/src (30%)
--> aws-iotwireless-deviceprofile/src (30%)
160
13 file pairs
details...
aws-iotwireless-partneraccount/src (26%)
--> aws-iotwireless-wirelessdevice/src (16%)
158
15 file pairs
details...
aws-iotwireless-partneraccount/src (24%)
--> aws-iotwireless-serviceprofile/src (27%)
148
14 file pairs
details...
aws-iotwireless-destination (77%)
--> aws-iotwireless-partneraccount (77%)
84
2 file pairs
details...
aws-iotwireless-partneraccount (59%)
--> aws-iotwireless-wirelessgateway (59%)
64
2 file pairs
details...
aws-iotwireless-destination (59%)
--> aws-iotwireless-wirelessgateway (59%)
64
2 file pairs
details...
aws-iotwireless-destination (59%)
--> aws-iotwireless-taskdefinition (56%)
64
2 file pairs
details...
aws-iotwireless-partneraccount (59%)
--> aws-iotwireless-taskdefinition (56%)
64
2 file pairs
details...
aws-iotwireless-taskdefinition (56%)
--> aws-iotwireless-wirelessgateway (59%)
64
2 file pairs
details...
| From Component --> To Component |
Duplicated Lines |
File Pairs | Details |
|---|---|---|---|
| aws-iotwireless-deviceprofile/src (43%) --> aws-iotwireless-serviceprofile/src (42%) |
230 | 11 file pairs | details... |
| aws-iotwireless-wirelessdevice/src (22%) --> aws-iotwireless-wirelessgateway/src (33%) |
216 | 14 file pairs | details... |
| aws-iotwireless-deviceprofile/src (38%) --> aws-iotwireless-taskdefinition/src (31%) |
203 | 12 file pairs | details... |
| aws-iotwireless-taskdefinition/src (29%) --> aws-iotwireless-wirelessgateway/src (29%) |
191 | 15 file pairs | details... |
| aws-iotwireless-deviceprofile/src (34%) --> aws-iotwireless-wirelessgateway/src (28%) |
182 | 16 file pairs | details... |
| aws-iotwireless-serviceprofile/src (33%) --> aws-iotwireless-taskdefinition/src (28%) |
181 | 11 file pairs | details... |
| aws-iotwireless-taskdefinition/src (27%) --> aws-iotwireless-wirelessdevice/src (18%) |
177 | 14 file pairs | details... |
| aws-iotwireless-destination/src (32%) --> aws-iotwireless-wirelessgateway/src (26%) |
172 | 16 file pairs | details... |
| aws-iotwireless-partneraccount/src (28%) --> aws-iotwireless-wirelessgateway/src (26%) |
172 | 16 file pairs | details... |
| aws-iotwireless-destination/src (32%) --> aws-iotwireless-wirelessdevice/src (18%) |
172 | 16 file pairs | details... |
| aws-iotwireless-destination/src (32%) --> aws-iotwireless-taskdefinition/src (26%) |
171 | 14 file pairs | details... |
| aws-iotwireless-serviceprofile/src (31%) --> aws-iotwireless-wirelessdevice/src (17%) |
168 | 15 file pairs | details... |
| aws-iotwireless-deviceprofile/src (31%) --> aws-iotwireless-wirelessdevice/src (17%) |
168 | 15 file pairs | details... |
| aws-iotwireless-serviceprofile/src (31%) --> aws-iotwireless-wirelessgateway/src (26%) |
168 | 15 file pairs | details... |
| aws-iotwireless-destination/src (31%) --> aws-iotwireless-serviceprofile/src (30%) |
164 | 14 file pairs | details... |
| aws-iotwireless-deviceprofile/src (30%) --> aws-iotwireless-partneraccount/src (26%) |
162 | 15 file pairs | details... |
| aws-iotwireless-partneraccount/src (26%) --> aws-iotwireless-taskdefinition/src (25%) |
161 | 16 file pairs | details... |
| aws-iotwireless-destination/src (30%) --> aws-iotwireless-partneraccount/src (26%) |
161 | 15 file pairs | details... |
| aws-iotwireless-destination/src (30%) --> aws-iotwireless-deviceprofile/src (30%) |
160 | 13 file pairs | details... |
| aws-iotwireless-partneraccount/src (26%) --> aws-iotwireless-wirelessdevice/src (16%) |
158 | 15 file pairs | details... |
| aws-iotwireless-partneraccount/src (24%) --> aws-iotwireless-serviceprofile/src (27%) |
148 | 14 file pairs | details... |
| aws-iotwireless-destination (77%) --> aws-iotwireless-partneraccount (77%) |
84 | 2 file pairs | details... |
| aws-iotwireless-partneraccount (59%) --> aws-iotwireless-wirelessgateway (59%) |
64 | 2 file pairs | details... |
| aws-iotwireless-destination (59%) --> aws-iotwireless-wirelessgateway (59%) |
64 | 2 file pairs | details... |
| aws-iotwireless-destination (59%) --> aws-iotwireless-taskdefinition (56%) |
64 | 2 file pairs | details... |
| aws-iotwireless-partneraccount (59%) --> aws-iotwireless-taskdefinition (56%) |
64 | 2 file pairs | details... |
| aws-iotwireless-taskdefinition (56%) --> aws-iotwireless-wirelessgateway (59%) |
64 | 2 file pairs | details... |
Longest Duplicates
The list of 20 longest duplicates.
| Size | # | Folders | Files | Lines | Code |
|---|---|---|---|---|---|
| 34 | x 2 | aws-iotwireless-destinationaws-iotwireless-partneraccount |  resource-role.yamlresource-role.yaml |
1:35 (100%)1:35 (100%) | view |
| 24 | x 2 | aws-iotwireless-partneraccountaws-iotwireless-wirelessgateway | resource-role.yamlresource-role.yaml |
1:25 (70%)1:25 (70%) | view |
| 24 | x 2 | aws-iotwireless-destinationaws-iotwireless-wirelessgateway | resource-role.yamlresource-role.yaml |
1:25 (70%)1:25 (70%) | view |
| 24 | x 2 | aws-iotwireless-destinationaws-iotwireless-taskdefinition | resource-role.yamlresource-role.yaml |
1:25 (70%)1:25 (64%) | view |
| 24 | x 2 | aws-iotwireless-partneraccountaws-iotwireless-taskdefinition | resource-role.yamlresource-role.yaml |
1:25 (70%)1:25 (64%) | view |
| 24 | x 2 | aws-iotwireless-taskdefinitionaws-iotwireless-wirelessgateway | resource-role.yamlresource-role.yaml |
1:25 (64%)1:25 (70%) | view |
| 21 | x 2 | aws-iotwireless-devicepr...twireless/deviceprofileaws-iotwireless-servicep...wireless/serviceprofile |  BaseHandlerStd.javaBaseHandlerStd.java |
26:49 (47%)26:49 (47%) | view |
| 21 | x 2 | aws-iotwireless-servicep...wireless/serviceprofileaws-iotwireless-taskdefi...wireless/taskdefinition | BaseHandlerStd.javaBaseHandlerStd.java |
26:49 (47%)28:52 (47%) | view |
| 21 | x 2 | aws-iotwireless-devicepr...twireless/deviceprofileaws-iotwireless-taskdefi...wireless/taskdefinition | BaseHandlerStd.javaBaseHandlerStd.java |
26:49 (47%)28:52 (47%) | view |
| 21 | x 2 | aws-iotwireless-destinat...iotwireless/destinationaws-iotwireless-taskdefi...wireless/taskdefinition | BaseHandlerStd.javaBaseHandlerStd.java |
27:50 (44%)28:52 (47%) | view |
| 21 | x 2 | aws-iotwireless-destinat...iotwireless/destinationaws-iotwireless-servicep...wireless/serviceprofile | BaseHandlerStd.javaBaseHandlerStd.java |
27:50 (44%)26:49 (47%) | view |
| 21 | x 2 | aws-iotwireless-destinat...iotwireless/destinationaws-iotwireless-devicepr...twireless/deviceprofile | BaseHandlerStd.javaBaseHandlerStd.java |
27:50 (44%)26:49 (47%) | view |
| 20 | x 2 | aws-iotwireless-devicepr...twireless/deviceprofileaws-iotwireless-wireless...ireless/wirelessgateway | BaseHandlerStd.javaBaseHandlerStd.java |
27:49 (45%)33:55 (40%) | view |
| 20 | x 2 | aws-iotwireless-servicep...wireless/serviceprofileaws-iotwireless-wireless...wireless/wirelessdevice | BaseHandlerStd.javaBaseHandlerStd.java |
27:49 (45%)33:55 (40%) | view |
| 20 | x 2 | aws-iotwireless-partnera...wireless/partneraccountaws-iotwireless-taskdefi...wireless/taskdefinition | BaseHandlerStd.javaBaseHandlerStd.java |
36:58 (37%)30:52 (45%) | view |
| 20 | x 2 | aws-iotwireless-partnera...wireless/partneraccountaws-iotwireless-servicep...wireless/serviceprofile | BaseHandlerStd.javaBaseHandlerStd.java |
36:58 (37%)27:49 (45%) | view |
| 20 | x 2 | aws-iotwireless-taskdefi...wireless/taskdefinitionaws-iotwireless-wireless...ireless/wirelessgateway | BaseHandlerStd.javaBaseHandlerStd.java |
30:52 (45%)33:55 (40%) | view |
| 20 | x 2 | aws-iotwireless-destinat...iotwireless/destinationaws-iotwireless-partnera...wireless/partneraccount | BaseHandlerStd.javaBaseHandlerStd.java |
28:50 (42%)36:58 (37%) | view |
| 20 | x 2 | aws-iotwireless-devicepr...twireless/deviceprofileaws-iotwireless-wireless...wireless/wirelessdevice | BaseHandlerStd.javaBaseHandlerStd.java |
27:49 (45%)33:55 (40%) | view |
| 20 | x 2 | aws-iotwireless-destinat...iotwireless/destinationaws-iotwireless-wireless...ireless/wirelessgateway | BaseHandlerStd.javaBaseHandlerStd.java |
28:50 (42%)33:55 (40%) | view |
Duplicated Units
The list of top 8 duplicated units.
| Size | # | Folders | Files | Lines | Code |
|---|---|---|---|---|---|
| 22 | x 2 | aws-iotwireless-servicep...wireless/serviceprofileaws-iotwireless-devicepr...twireless/deviceprofile | ReadHandler.javaReadHandler.java |
14:38 14:38 | view |
| 22 | x 2 | aws-iotwireless-taskdefi...wireless/taskdefinitionaws-iotwireless-devicepr...twireless/deviceprofile | CreateHandler.javaCreateHandler.java |
15:40 15:40 | view |
| 18 | x 2 | aws-iotwireless-wireless...ireless/wirelessgatewayaws-iotwireless-wireless...wireless/wirelessdevice | DeleteHandler.javaDeleteHandler.java |
17:35 18:36 | view |
| 16 | x 6 | aws-iotwireless-servicep...wireless/serviceprofileaws-iotwireless-devicepr...twireless/deviceprofileaws-iotwireless-wireless...ireless/wirelessgatewayaws-iotwireless-partnera...wireless/partneraccountaws-iotwireless-destinat...iotwireless/destinationaws-iotwireless-wireless...wireless/wirelessdevice | BaseHandlerStd.javaBaseHandlerStd.javaBaseHandlerStd.javaBaseHandlerStd.javaBaseHandlerStd.javaBaseHandlerStd.java |
61:77 61:77 70:86 77:93 65:81 70:86 | view |
| 13 | x 5 | aws-iotwireless-servicep...wireless/serviceprofileaws-iotwireless-taskdefi...wireless/taskdefinitionaws-iotwireless-devicepr...twireless/deviceprofileaws-iotwireless-partnera...wireless/partneraccountaws-iotwireless-destinat...iotwireless/destination | DeleteHandler.javaDeleteHandler.javaDeleteHandler.javaDeleteHandler.javaDeleteHandler.java |
16:29 16:29 17:30 15:28 15:28 | view |
| 12 | x 7 | aws-iotwireless-servicep...wireless/serviceprofileaws-iotwireless-taskdefi...wireless/taskdefinitionaws-iotwireless-devicepr...twireless/deviceprofileaws-iotwireless-wireless...ireless/wirelessgatewayaws-iotwireless-partnera...wireless/partneraccountaws-iotwireless-destinat...iotwireless/destinationaws-iotwireless-wireless...wireless/wirelessdevice | BaseHandlerStd.javaBaseHandlerStd.javaBaseHandlerStd.javaBaseHandlerStd.javaBaseHandlerStd.javaBaseHandlerStd.javaBaseHandlerStd.java |
28:40 31:43 28:40 34:46 37:49 29:41 34:46 | view |
| 9 | x 3 | aws-iotwireless-servicep...wireless/serviceprofileaws-iotwireless-taskdefi...wireless/taskdefinitionaws-iotwireless-devicepr...twireless/deviceprofile | UpdateHandler.javaUpdateHandler.javaUpdateHandler.java |
13:22 13:22 13:22 | view |
| 8 | x 2 | aws-iotwireless-servicep...wireless/serviceprofileaws-iotwireless-devicepr...twireless/deviceprofile | Translator.javaTranslator.java |
111:119 110:118 | view |