apache / logging-log4netDuplication

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

11% duplication:

22,505 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
2,581 duplicated lines

1,066 duplicates

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

Duplication per Extension

Duplication per Component (primary)

Longest Duplicates

The list of 50 longest duplicates.

See data for all 1,066 duplicates...

Size	#	Folders	Files	Lines	Code
44	x 2	src/log4net/Util src/log4net/Util	LogicalThreadContextStack.cs ThreadContextStack.cs	211:383 (38%) 172:344 (45%)	view
39	x 2	src/log4net/Appender src/log4net/Appender	BufferingForwardingAppender.cs ForwardingAppender.cs	116:272 (68%) 121:277 (68%)	view
36	x 2	src/log4net/Appender src/log4net/Appender	LocalSyslogAppender.cs RemoteSyslogAppender.cs	67:251 (26%) 77:258 (24%)	view
24	x 2	src/log4net/Core src/log4net/Plugin	LevelCollection.cs PluginCollection.cs	531:596 (8%) 543:608 (8%)	view
24	x 2	src/site/xdoc/release/manual src/site/xdoc/release/manual	introduction.xml introduction.xml	377:404 (3%) 426:453 (3%)	view
21	x 2	src/site/xdoc/release/manual src/site/xdoc/release/manual	configuration.xml configuration.xml	972:998 (2%) 1050:1076 (2%)	view
21	x 2	src/site/xdoc/release src/site/xdoc/release	config-examples.xml config-examples.xml	93:119 (2%) 151:177 (2%)	view
20	x 2	src/site/xdoc/release src/site/xdoc/release	example-apps.xml example-apps.xml	205:230 (6%) 240:265 (6%)	view
20	x 2	src/site/xdoc/release/manual src/site/xdoc/release/manual	introduction.xml introduction.xml	340:362 (2%) 426:448 (2%)	view
20	x 2	src/site/xdoc/release src/site/xdoc/release	config-examples.xml config-examples.xml	105:132 (2%) 356:383 (2%)	view
20	x 2	src/site/xdoc/release/manual src/site/xdoc/release/manual	introduction.xml introduction.xml	340:362 (2%) 377:399 (2%)	view
19	x 2	src/site/xdoc/release src/site/xdoc/release	example-apps.xml example-apps.xml	240:264 (6%) 275:299 (6%)	view
19	x 2	src/site/xdoc/release src/site/xdoc/release	example-apps.xml example-apps.xml	205:229 (6%) 275:299 (6%)	view
19	x 2	src/log4net/Layout/Pattern src/log4net/Util/PatternStringConverters	DatePatternConverter.cs DatePatternConverter.cs	94:148 (63%) 93:148 (63%)	view
18	x 2	src/log4net/Appender src/log4net/Appender	LocalSyslogAppender.cs RemoteSyslogAppender.cs	443:492 (13%) 457:506 (12%)	view
16	x 2	src/log4net/Appender src/log4net/Plugin	AppenderCollection.cs PluginCollection.cs	567:610 (5%) 554:597 (5%)	view
16	x 2	src/log4net/Filter src/log4net/Filter	PropertyFilter.cs StringMatchFilter.cs	120:163 (44%) 199:243 (31%)	view
16	x 2	ROOT ROOT	install-dotnet-core-sdk-1.1.ps1 install-net-framework-sdk-3.5.ps1	1:16 (66%) 1:16 (39%)	view
16	x 2	src/site/xdoc/release/manual src/site/xdoc/release/manual	introduction.xml introduction.xml	298:315 (2%) 426:443 (2%)	view
16	x 2	src/site/xdoc/release/manual src/site/xdoc/release/manual	introduction.xml introduction.xml	298:315 (2%) 377:394 (2%)	view
16	x 2	src/site/xdoc/release/manual src/site/xdoc/release/manual	introduction.xml introduction.xml	298:315 (2%) 340:357 (2%)	view
16	x 2	src/log4net/Appender src/log4net/Core	AppenderCollection.cs LevelCollection.cs	567:610 (5%) 542:585 (5%)	view
15	x 2	src/log4net/Core src/log4net/Plugin	LevelCollection.cs PluginCollection.cs	678:724 (5%) 694:740 (5%)	view
15	x 2	src/integration-testing/log4net-611-main src/integration-testing/log4net-681	Program.cs Program.cs	17:41 (55%) 13:37 (46%)	view
15	x 2	src/log4net/Appender src/log4net/Plugin	AppenderCollection.cs PluginCollection.cs	707:752 (5%) 694:740 (5%)	view
15	x 2	src/log4net/Appender src/log4net/Core	AppenderCollection.cs LevelCollection.cs	707:752 (5%) 678:724 (5%)	view
14	x 2	src/site/xdoc/release src/site/xdoc/release	example-apps.xml example-apps.xml	89:105 (4%) 240:256 (4%)	view
14	x 2	src/site/xdoc/release src/site/xdoc/release	example-apps.xml example-apps.xml	89:105 (4%) 275:291 (4%)	view
14	x 2	src/site/xdoc/release src/site/xdoc/release	example-apps.xml example-apps.xml	89:105 (4%) 205:221 (4%)	view
14	x 2	src/log4net/Core src/log4net/Core	CompactRepositorySelector.cs DefaultRepositorySelector.cs	247:299 (18%) 416:469 (5%)	view
13	x 2	src/site/xdoc/release src/site/xdoc/release	config-examples.xml config-examples.xml	88:103 (1%) 339:354 (1%)	view
12	x 2	src/site/xdoc/release src/site/xdoc/release	example-apps.xml example-apps.xml	275:288 (3%) 427:440 (3%)	view
12	x 2	src/site/xdoc/release src/site/xdoc/release	framework-support.xml framework-support.xml	332:344 (1%) 519:531 (1%)	view
12	x 2	src/log4net/Appender src/log4net/Appender	BufferingAppenderSkeleton.cs MemoryAppender.cs	224:261 (9%) 112:145 (27%)	view
12	x 2	src/log4net/Layout src/log4net/Util	PatternLayout.cs PatternString.cs	1131:1167 (9%) 485:515 (14%)	view
12	x 2	src/site/xdoc/release src/site/xdoc/release	example-apps.xml example-apps.xml	240:253 (3%) 427:440 (3%)	view
12	x 2	src/site/xdoc/release src/site/xdoc/release	example-apps.xml example-apps.xml	205:218 (3%) 427:440 (3%)	view
12	x 2	src/site/xdoc/release src/site/xdoc/release	example-apps.xml example-apps.xml	89:102 (3%) 427:440 (3%)	view
12	x 2	src/site/xdoc/release src/site/xdoc/release	framework-support.xml framework-support.xml	281:293 (1%) 434:446 (1%)	view
12	x 2	src/log4net/Util src/log4net/Util	EmptyCollection.cs EmptyDictionary.cs	70:148 (41%) 70:148 (23%)	view
11	x 2	src/site/xdoc/release/manual src/site/xdoc/release/manual	configuration.xml configuration.xml	1021:1033 (1%) 1143:1155 (1%)	view
11	x 2	src/log4net/Appender src/log4net/Core	AppenderCollection.cs LevelCollection.cs	448:473 (3%) 437:462 (3%)	view
11	x 2	src/integration-testing/log4net-611-main src/integration-testing/log4net-673	Program.cs Program.cs	28:44 (40%) 27:43 (28%)	view
11	x 2	src/site/xdoc/release/manual src/site/xdoc/release/manual	configuration.xml configuration.xml	829:841 (1%) 923:935 (1%)	view
11	x 2	src/log4net/Core src/log4net/Plugin	LevelCollection.cs PluginCollection.cs	437:462 (3%) 446:474 (3%)	view
11	x 2	src/site/xdoc/release/manual src/site/xdoc/release/manual	configuration.xml configuration.xml	726:738 (1%) 1143:1155 (1%)	view
11	x 2	src/site/xdoc/release/manual src/site/xdoc/release/manual	configuration.xml configuration.xml	726:738 (1%) 1021:1033 (1%)	view
11	x 2	src/site/xdoc/release/manual src/site/xdoc/release/manual	configuration.xml configuration.xml	829:841 (1%) 1181:1193 (1%)	view
11	x 2	src/site/xdoc/release/manual src/site/xdoc/release/manual	configuration.xml configuration.xml	756:768 (1%) 1050:1062 (1%)	view
11	x 2	src/site/xdoc/release/manual src/site/xdoc/release/manual	configuration.xml configuration.xml	807:819 (1%) 901:913 (1%)	view

Duplicated Units

The list of top 26 duplicated units.

See data for all 26 unit duplicates...

Size	#	Folders	Files	Lines	Code
31	x 2	src/log4net/Appender src/log4net/Appender	RemoteSyslogAppender.cs LocalSyslogAppender.cs	469:507 455:493	view
30	x 2	src/log4net/Util/PatternStringConverters src/log4net/Layout/Pattern	DatePatternConverter.cs DatePatternConverter.cs	113:146 114:146	view
13	x 2	src/log4net/Appender src/log4net/Appender	BufferingForwardingAppender.cs ForwardingAppender.cs	129:143 134:148	view
13	x 3	src/log4net/Appender src/log4net/Core src/log4net/Plugin	AppenderCollection.cs LevelCollection.cs PluginCollection.cs	354:371 343:360 353:370	view
9	x 2	src/log4net/Appender src/log4net/Appender	BufferingForwardingAppender.cs ForwardingAppender.cs	186:197 191:202	view
9	x 2	src/log4net/Appender src/log4net/Appender	BufferingForwardingAppender.cs ForwardingAppender.cs	207:217 212:222	view
9	x 2	src/log4net/Appender src/log4net/Appender	BufferingForwardingAppender.cs ForwardingAppender.cs	229:239 234:244	view
9	x 2	src/log4net/Appender src/log4net/Appender	BufferingForwardingAppender.cs ForwardingAppender.cs	251:261 256:266	view
9	x 3	src/log4net/Appender src/log4net/Core src/log4net/Plugin	AppenderCollection.cs LevelCollection.cs PluginCollection.cs	311:321 300:310 310:320	view
9	x 3	src/log4net/Appender src/log4net/Core src/log4net/Plugin	AppenderCollection.cs LevelCollection.cs PluginCollection.cs	332:342 321:331 331:341	view
9	x 3	src/log4net/Appender src/log4net/Core src/log4net/Plugin	AppenderCollection.cs LevelCollection.cs PluginCollection.cs	492:504 481:493 493:505	view
9	x 3	src/log4net/Appender src/log4net/Core src/log4net/Plugin	AppenderCollection.cs LevelCollection.cs PluginCollection.cs	511:523 500:512 512:524	view
8	x 3	src/log4net/Appender src/log4net/Core src/log4net/Plugin	AppenderCollection.cs LevelCollection.cs PluginCollection.cs	269:280 258:269 268:279	view
8	x 3	src/log4net/Appender src/log4net/Core src/log4net/Plugin	AppenderCollection.cs LevelCollection.cs PluginCollection.cs	380:390 369:379 379:388	view
7	x 2	extensions/net/1.0/log4net.Ext.MarshalByRef/cs/src src/log4net/Core	MarshalByRefLogImpl.cs LogImpl.cs	63:72 132:141	view
7	x 3	src/log4net/Appender src/log4net/Core src/log4net/Plugin	AppenderCollection.cs LevelCollection.cs PluginCollection.cs	595:604 570:579 582:591	view
7	x 3	src/log4net/Appender src/log4net/Core src/log4net/Plugin	AppenderCollection.cs LevelCollection.cs PluginCollection.cs	720:729 691:700 707:716	view
7	x 2	src/log4net/Util src/log4net/Util	ThreadContextStack.cs LogicalThreadContextStack.cs	172:180 211:219	view
7	x 2	src/log4net/Util src/log4net/Util	ThreadContextStack.cs LogicalThreadContextStack.cs	190:198 229:237	view
7	x 2	src/log4net/Util src/log4net/Util	ThreadContextStack.cs LogicalThreadContextStack.cs	278:287 317:326	view
7	x 2	src/log4net/Util src/log4net/Layout	PatternString.cs PatternLayout.cs	485:494 1131:1140	view
7	x 2	src/log4net/Util src/log4net/Layout	PatternString.cs PatternLayout.cs	506:516 1158:1168	view
6	x 2	extensions/net/1.0/log4net.Ext.MarshalByRef/cs/src src/log4net/Core	MarshalByRefLogImpl.cs LogImpl.cs	74:81 1266:1273	view
6	x 3	src/log4net/Appender src/log4net/Core src/log4net/Plugin	AppenderCollection.cs LevelCollection.cs PluginCollection.cs	209:217 198:206 202:210	view
6	x 3	src/log4net/Appender src/log4net/Core src/log4net/Plugin	AppenderCollection.cs LevelCollection.cs PluginCollection.cs	586:593 561:568 573:580	view
6	x 2	src/log4net/Core src/log4net/Core	CompactRepositorySelector.cs DefaultRepositorySelector.cs	348:355 551:558	view