aws-samples / amazon-qldb-dmv-sample-java
Duplication

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.
Learn more...
Duplication Overall
  • 5% duplication:
    • 2,945 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
    • 148 duplicated lines
  • 28 duplicates
system5% (148 lines)
Duplication per Extension
java5% (148 lines)
Duplication per Component (primary)
tutorial/model/streams24% (91 lines)
tutorial/qldb9% (45 lines)
tutorial/streams3% (12 lines)
tutorial0% (0 lines)
tutorial/model0% (0 lines)

Duplication Between Components (50+ lines)

G tutorial/model/streams tutorial/model/streams tutorial/qldb tutorial/qldb tutorial/model/streams--tutorial/qldb 90

Download: SVG DOT (open online Graphviz editor)

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Show more details on duplication between components...
Longest Duplicates
The list of 20 longest duplicates.
See data for all 28 duplicates...
Size#FoldersFilesLinesCode
9 x 2 src/main/java/software/a.../tutorial/model/streams
src/main/java/software/amazon/qldb/tutorial/qldb
BlockSummaryRecord.java
JournalBlock.java
 39:47 (9%)
48:56 (6%)
 view
9 x 2 src/main/java/software/a.../tutorial/model/streams
src/main/java/software/amazon/qldb/tutorial/qldb
BlockSummaryRecord.java
JournalBlock.java
 71:79 (9%)
116:124 (6%)
 view
8 x 2 src/main/java/software/a.../tutorial/model/streams
src/main/java/software/amazon/qldb/tutorial/qldb
BlockSummaryRecord.java
JournalBlock.java
 60:67 (8%)
69:76 (6%)
 view
7 x 2 src/main/java/software/a.../tutorial/model/streams
src/main/java/software/a.../tutorial/model/streams
RevisionSummary.java
StreamRecord.java
 50:59 (21%)
63:72 (10%)
 view
7 x 2 src/main/java/software/a.../tutorial/model/streams
src/main/java/software/a.../tutorial/model/streams
ControlRecord.java
TableInfo.java
 48:57 (20%)
54:63 (21%)
 view
7 x 2 src/main/java/software/a.../tutorial/model/streams
src/main/java/software/a.../tutorial/model/streams
StreamRecord.java
TableInfo.java
 63:72 (10%)
54:63 (21%)
 view
7 x 2 src/main/java/software/a.../tutorial/model/streams
src/main/java/software/amazon/qldb/tutorial/qldb
BlockSummaryRecord.java
JournalBlock.java
 52:58 (7%)
61:67 (5%)
 view
7 x 2 src/main/java/software/a.../tutorial/model/streams
src/main/java/software/a.../tutorial/model/streams
RevisionSummary.java
TableInfo.java
 50:59 (21%)
54:63 (21%)
 view
7 x 2 src/main/java/software/a.../tutorial/model/streams
src/main/java/software/a.../tutorial/model/streams
ControlRecord.java
RevisionSummary.java
 48:57 (20%)
50:59 (21%)
 view
7 x 2 src/main/java/software/a.../tutorial/model/streams
src/main/java/software/a.../tutorial/model/streams
ControlRecord.java
StreamRecord.java
 48:57 (20%)
63:72 (10%)
 view
6 x 2 src/main/java/software/a.../tutorial/model/streams
src/main/java/software/a.../tutorial/model/streams
BlockSummaryRecord.java
Revision.java
 86:92 (6%)
59:65 (8%)
 view
6 x 2 src/main/java/software/a.../tutorial/model/streams
src/main/java/software/a.../tutorial/model/streams
RevisionDetailsRecord.java
StreamRecord.java
 40:46 (19%)
66:72 (8%)
 view
6 x 2 src/main/java/software/a.../tutorial/model/streams
src/main/java/software/amazon/qldb/tutorial/qldb
Revision.java
QldbRevision.java
 106:115 (8%)
61:80 (8%)
 view
6 x 2 src/main/java/software/a.../tutorial/model/streams
src/main/java/software/a.../tutorial/model/streams
Revision.java
RevisionDetailsRecord.java
 59:65 (8%)
40:46 (19%)
 view
6 x 2 src/main/java/software/a.../tutorial/model/streams
src/main/java/software/a.../tutorial/model/streams
Revision.java
TableInfo.java
 59:65 (8%)
57:63 (18%)
 view
6 x 2 src/main/java/software/a.../tutorial/model/streams
src/main/java/software/a.../tutorial/model/streams
BlockSummaryRecord.java
RevisionDetailsRecord.java
 86:92 (6%)
40:46 (19%)
 view
6 x 2 src/main/java/software/a.../tutorial/model/streams
src/main/java/software/a.../tutorial/model/streams
BlockSummaryRecord.java
TableInfo.java
 86:92 (6%)
57:63 (18%)
 view
6 x 2 src/main/java/software/a.../tutorial/model/streams
src/main/java/software/a.../tutorial/model/streams
ControlRecord.java
RevisionDetailsRecord.java
 51:57 (17%)
40:46 (19%)
 view
6 x 2 src/main/java/software/a.../tutorial/model/streams
src/main/java/software/a.../tutorial/model/streams
Revision.java
RevisionSummary.java
 59:65 (8%)
53:59 (18%)
 view
6 x 2 src/main/java/software/a.../tutorial/model/streams
src/main/java/software/a.../tutorial/model/streams
ControlRecord.java
Revision.java
 51:57 (17%)
59:65 (8%)
 view
Duplicated Units
The list of top 1 duplicated units.
See data for all 1 unit duplicate
Size#FoldersFilesLinesCode
7 x 2 src/main/java/software/amazon/qldb/tutorial/qldb
src/main/java/software/a.../tutorial/model/streams
QldbRevision.java
Revision.java
 136:143 
97:104 
 view