apache / maven-scm - Duplication

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

13% duplication:

13,032 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
1,716 duplicated lines

450 duplicates

dependency graphs: 2D graph | 3D graph | 3D graph (with duplicates)...

Duplication per Extension

Duplication per Component (primary)

Duplication Between Components (50+ lines)

Download: SVG DOT (open online Graphviz editor)

From Component --> To Component	Duplicated Lines	File Pairs	Details
maven-scm-api (2%) --> maven-scm-test (4%)	116	9 file pairs	details...
maven-scm-providers (<1%) --> maven-scm-test (3%)	106	12 file pairs	details...
maven-scm-api (1%) --> maven-scm-providers (<1%)	105	13 file pairs	details...
maven-scm-managers (145%) --> maven-scm-providers (<1%)	93	22 file pairs	details...
maven-scm-client (26%) --> maven-scm-providers (<1%)	79	11 file pairs	details...
maven-scm-plugin (2%) --> src (11%)	60	1 file pair	details...

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Show more details on duplication between components...

Longest Duplicates

The list of 50 longest duplicates.

See data for all 450 duplicates...

Size	#	Folders	Files	Lines	Code
35	x 2	maven-scm-providers/mave...rovider/hg/command/diff maven-scm-providers/mave...ovider/svn/command/diff	HgDiffConsumer.java SvnDiffConsumer.java	87:145 (60%) 90:148 (64%)	view
30	x 2	maven-scm-plugin/src/site/resources/css src/site/resources/css	site.css site.css	20:60 (100%) 20:60 (100%)	view
26	x 2	maven-scm-providers/mave.../maven/scm/provider/git maven-scm-providers/mave.../maven/scm/provider/svn	GitConfigFileReader.java SvnConfigFileReader.java	52:103 (54%) 48:99 (54%)	view
20	x 2	maven-scm-providers/mave...rovider/hg/command/diff maven-scm-providers/mave...ovider/git/command/diff	HgDiffConsumer.java GitDiffConsumer.java	114:145 (34%) 145:176 (30%)	view
20	x 2	maven-scm-providers/mave...ovider/git/command/diff maven-scm-providers/mave...ovider/svn/command/diff	GitDiffConsumer.java SvnDiffConsumer.java	145:176 (30%) 117:148 (37%)	view
16	x 2	src/site/xdoc src/site/xdoc	matrix.xml matrix.xml	92:122 (8%) 308:338 (8%)	view
16	x 2	maven-scm-test/src/main/.../scm/tck/command/branch maven-scm-test/src/main/...ven/scm/tck/command/tag	BranchCommandTckTest.java TagCommandTckTest.java	64:90 (47%) 64:90 (48%)	view
16	x 2	maven-scm-providers/mave...n/svnexe/command/branch maven-scm-providers/mave.../svn/svnexe/command/tag	SvnBranchCommand.java SvnTagCommand.java	83:109 (19%) 103:129 (14%)	view
15	x 2	maven-scm-providers/mave.../svnexe/command/checkin maven-scm-providers/mave...vn/svnexe/command/mkdir	SvnCheckInCommand.java SvnMkdirCommand.java	69:93 (31%) 64:88 (28%)	view
13	x 2	maven-scm-providers/mave...itexe/command/changelog maven-scm-providers/mave...vnexe/command/changelog	GitChangeLogCommand.java SvnChangeLogCommand.java	51:64 (7%) 56:69 (9%)	view
13	x 2	maven-scm-providers/mave.../maven/scm/provider/svn maven-scm-test/src/main/java/org/apache/maven/scm	SvnScmTestUtils.java ScmTestCase.java	99:114 (25%) 221:236 (9%)	view
12	x 2	maven-scm-providers/mave...ider/git/gitexe/command maven-scm-providers/mave...ider/svn/svnexe/command	AbstractFileCheckingConsumer.java AbstractFileCheckingConsumer.java	34:54 (40%) 34:54 (31%)	view
12	x 2	maven-scm-api/src/main/j...pache/maven/scm/manager maven-scm-api/src/main/j...ache/maven/scm/provider	ScmManager.java ScmProvider.java	166:210 (13%) 209:253 (8%)	view
12	x 2	maven-scm-providers/mave...gitexe/command/checkout maven-scm-providers/mave...t/gitexe/command/update	GitCheckOutCommand.java GitUpdateCommand.java	74:89 (11%) 51:66 (21%)	view
11	x 2	maven-scm-providers/mave...svn/svnexe/command/info maven-scm-providers/mave...n/svnexe/command/update	SvnInfoCommand.java SvnUpdateCommand.java	62:80 (25%) 58:76 (20%)	view
11	x 2	maven-scm-providers/mave...svn/svnexe/command/diff maven-scm-providers/mave...svn/svnexe/command/list	SvnDiffCommand.java SvnListCommand.java	54:72 (30%) 57:75 (31%)	view
11	x 2	maven-scm-providers/mave...svn/svnexe/command/info maven-scm-providers/mave...n/svnexe/command/status	SvnInfoCommand.java SvnStatusCommand.java	62:80 (25%) 45:63 (52%)	view
11	x 2	maven-scm-api/src/main/j...pache/maven/scm/manager maven-scm-api/src/main/j...ache/maven/scm/provider	ScmManager.java ScmProvider.java	205:239 (12%) 274:308 (7%)	view
11	x 2	maven-scm-providers/mave...svn/svnexe/command/diff maven-scm-providers/mave...n/svnexe/command/remove	SvnDiffCommand.java SvnRemoveCommand.java	54:72 (30%) 55:73 (36%)	view
11	x 2	maven-scm-providers/mave...n/svnexe/command/remove maven-scm-providers/mave...n/svnexe/command/status	SvnRemoveCommand.java SvnStatusCommand.java	55:73 (36%) 45:63 (52%)	view
11	x 2	maven-scm-providers/mave...n/svnexe/command/remove maven-scm-providers/mave...n/svnexe/command/update	SvnRemoveCommand.java SvnUpdateCommand.java	55:73 (36%) 58:76 (20%)	view
11	x 2	maven-scm-providers/mave...n/svnexe/command/status maven-scm-providers/mave...n/svnexe/command/update	SvnStatusCommand.java SvnUpdateCommand.java	45:63 (52%) 58:76 (20%)	view
11	x 2	maven-scm-providers/mave...vn/svnexe/command/blame maven-scm-providers/mave...svn/svnexe/command/list	SvnBlameCommand.java SvnListCommand.java	51:69 (44%) 57:75 (31%)	view
11	x 2	maven-scm-providers/mave.../svn/svnexe/command/add maven-scm-providers/mave...vn/svnexe/command/blame	SvnAddCommand.java SvnBlameCommand.java	59:77 (31%) 51:69 (44%)	view
11	x 2	maven-scm-providers/mave.../svn/svnexe/command/add maven-scm-providers/mave...svn/svnexe/command/list	SvnAddCommand.java SvnListCommand.java	59:77 (31%) 57:75 (31%)	view
11	x 2	maven-scm-providers/mave...vn/svnexe/command/blame maven-scm-providers/mave...n/svnexe/command/update	SvnBlameCommand.java SvnUpdateCommand.java	51:69 (44%) 58:76 (20%)	view
11	x 2	src/site/xdoc src/site/xdoc	matrix.xml matrix.xml	292:312 (6%) 304:324 (6%)	view
11	x 2	maven-scm-providers/mave.../svn/svnexe/command/add maven-scm-providers/mave...n/svnexe/command/remove	SvnAddCommand.java SvnRemoveCommand.java	59:77 (31%) 55:73 (36%)	view
11	x 2	maven-scm-providers/mave...svn/svnexe/command/info maven-scm-providers/mave...svn/svnexe/command/list	SvnInfoCommand.java SvnListCommand.java	62:80 (25%) 57:75 (31%)	view
11	x 2	maven-scm-providers/mave...svn/svnexe/command/list maven-scm-providers/mave...n/svnexe/command/update	SvnListCommand.java SvnUpdateCommand.java	57:75 (31%) 58:76 (20%)	view
11	x 2	maven-scm-providers/mave...svn/svnexe/command/diff maven-scm-providers/mave...n/svnexe/command/status	SvnDiffCommand.java SvnStatusCommand.java	54:72 (30%) 45:63 (52%)	view
11	x 2	maven-scm-providers/mave...vn/svnexe/command/blame maven-scm-providers/mave...svn/svnexe/command/info	SvnBlameCommand.java SvnInfoCommand.java	51:69 (44%) 62:80 (25%)	view
11	x 2	maven-scm-providers/mave.../svn/svnexe/command/add maven-scm-providers/mave...svn/svnexe/command/info	SvnAddCommand.java SvnInfoCommand.java	59:77 (31%) 62:80 (25%)	view
11	x 2	maven-scm-providers/mave...svn/svnexe/command/diff maven-scm-providers/mave...n/svnexe/command/update	SvnDiffCommand.java SvnUpdateCommand.java	54:72 (30%) 58:76 (20%)	view
11	x 2	maven-scm-providers/mave...itexe/command/changelog maven-scm-providers/mave.../jgit/command/changelog	GitChangeLogCommand.java JGitChangeLogCommand.java	101:111 (6%) 88:98 (6%)	view
11	x 2	maven-scm-providers/mave...svn/svnexe/command/info maven-scm-providers/mave...n/svnexe/command/remove	SvnInfoCommand.java SvnRemoveCommand.java	62:80 (25%) 55:73 (36%)	view
11	x 2	maven-scm-providers/mave...vn/svnexe/command/blame maven-scm-providers/mave...n/svnexe/command/remove	SvnBlameCommand.java SvnRemoveCommand.java	51:69 (44%) 55:73 (36%)	view
11	x 2	maven-scm-providers/mave...svn/svnexe/command/diff maven-scm-providers/mave...svn/svnexe/command/info	SvnDiffCommand.java SvnInfoCommand.java	54:72 (30%) 62:80 (25%)	view
11	x 2	maven-scm-providers/mave.../svn/svnexe/command/add maven-scm-providers/mave...svn/svnexe/command/diff	SvnAddCommand.java SvnDiffCommand.java	59:77 (31%) 54:72 (30%)	view
11	x 2	maven-scm-providers/mave...vn/svnexe/command/blame maven-scm-providers/mave...svn/svnexe/command/diff	SvnBlameCommand.java SvnDiffCommand.java	51:69 (44%) 54:72 (30%)	view
11	x 2	maven-scm-providers/mave...vn/svnexe/command/blame maven-scm-providers/mave...n/svnexe/command/status	SvnBlameCommand.java SvnStatusCommand.java	51:69 (44%) 45:63 (52%)	view
11	x 2	maven-scm-api/src/main/j...pache/maven/scm/manager maven-scm-test/src/main/...pache/maven/scm/manager	AbstractScmManager.java ScmManagerStub.java	328:338 (4%) 219:229 (6%)	view
11	x 2	maven-scm-providers/mave.../svn/svnexe/command/add maven-scm-providers/mave...n/svnexe/command/status	SvnAddCommand.java SvnStatusCommand.java	59:77 (31%) 45:63 (52%)	view
11	x 2	maven-scm-providers/mave...svn/svnexe/command/list maven-scm-providers/mave...n/svnexe/command/status	SvnListCommand.java SvnStatusCommand.java	57:75 (31%) 45:63 (52%)	view
11	x 2	maven-scm-providers/mave...n/scm/provider/git/util maven-scm-providers/mave...n/scm/provider/svn/util	GitUtil.java SvnUtil.java	58:77 (42%) 56:75 (42%)	view
11	x 2	maven-scm-providers/mave...ider/git/gitexe/command maven-scm-providers/mave...ider/svn/svnexe/command	AbstractFileCheckingConsumer.java AbstractFileCheckingConsumer.java	70:89 (36%) 78:97 (28%)	view
11	x 2	maven-scm-providers/mave.../svn/svnexe/command/add maven-scm-providers/mave...n/svnexe/command/update	SvnAddCommand.java SvnUpdateCommand.java	59:77 (31%) 58:76 (20%)	view
11	x 2	maven-scm-providers/mave...svn/svnexe/command/list maven-scm-providers/mave...n/svnexe/command/remove	SvnListCommand.java SvnRemoveCommand.java	57:75 (31%) 55:73 (36%)	view
10	x 2	maven-scm-providers/mave...vn/svnexe/command/blame maven-scm-providers/mave.../svnexe/command/checkin	SvnBlameCommand.java SvnCheckInCommand.java	51:66 (40%) 69:84 (21%)	view
10	x 2	maven-scm-providers/mave...vn/svnexe/command/mkdir maven-scm-providers/mave...n/svnexe/command/status	SvnMkdirCommand.java SvnStatusCommand.java	64:79 (18%) 45:60 (47%)	view

Duplicated Units

The list of top 7 duplicated units.

See data for all 7 unit duplicates...

Size	#	Folders	Files	Lines	Code
27	x 2	maven-scm-providers/mave.../maven/scm/provider/git maven-scm-providers/mave.../maven/scm/provider/svn	GitConfigFileReader.java SvnConfigFileReader.java	59:95 55:91	view
15	x 2	maven-scm-providers/mave.../maven/scm/provider/git maven-scm-providers/mave.../maven/scm/provider/svn	AbstractGitScmProvider.java AbstractSvnScmProvider.java	101:121 135:155	view
10	x 2	maven-scm-api/src/main/j...pache/maven/scm/manager maven-scm-test/src/main/...pache/maven/scm/manager	AbstractScmManager.java ScmManagerStub.java	328:339 219:230	view
8	x 2	maven-scm-providers/mave.../jgit/command/changelog maven-scm-providers/mave...itexe/command/changelog	JGitChangeLogCommand.java GitChangeLogCommand.java	77:86 83:92	view
8	x 2	maven-scm-api/src/main/j...pache/maven/scm/manager maven-scm-test/src/main/...pache/maven/scm/manager	AbstractScmManager.java ScmManagerStub.java	363:372 252:261	view
7	x 2	maven-scm-providers/mave.../jgit/command/changelog maven-scm-providers/mave...itexe/command/changelog	JGitChangeLogCommand.java GitChangeLogCommand.java	57:65 71:79	view
7	x 2	maven-scm-providers/mave.../maven/scm/provider/git maven-scm-providers/mave.../maven/scm/provider/svn	AbstractGitScmProvider.java AbstractSvnScmProvider.java	126:134 162:170	view