JetBrains / xodus 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

10% duplication:

48,310 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
4,988 duplicated lines

578 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 578 duplicates...

Size	#	Folders	Files	Lines	Code
54	x 2	utils/src/main/java/jetb...taStructures/decorators utils/src/main/java/jetb...taStructures/decorators	HashSetDecorator.java LinkedHashSetDecorator.java	36:119 (90%) 35:118 (90%)	view
46	x 2	utils/src/main/java/jetb...ore/dataStructures/hash utils/src/main/java/jetb...ore/dataStructures/hash	IntLinkedHashMap.java LongLinkedHashMap.java	147:208 (27%) 147:208 (27%)	view
33	x 2	query/src/main/java/jetbrains/exodus/query query/src/main/java/jetbrains/exodus/query	InMemoryQuickSortOnInitIterable.java InMemoryQuickSortTwoSidesIterable.java	26:79 (55%) 26:79 (42%)	view
28	x 2	utils/src/main/java/jetb...ore/dataStructures/hash utils/src/main/java/jetb...ore/dataStructures/hash	HashSet.java LinkedHashSet.java	54:96 (17%) 56:98 (17%)	view
28	x 2	utils/src/main/java/jetb...ore/dataStructures/hash utils/src/main/java/jetb...ore/dataStructures/hash	HashSet.java LinkedHashSet.java	97:133 (17%) 107:143 (17%)	view
28	x 2	environment/src/main/jav...rains/exodus/tree/btree environment/src/main/jav...rains/exodus/tree/btree	BasePageImmutable.java BasePageImmutable.java	241:278 (11%) 335:373 (11%)	view
24	x 2	entity-store/src/main/ja...dus/entitystore/iterate entity-store/src/main/ja...dus/entitystore/iterate	MergeSortedIterable.java MergeSortedIterableWithValueGetter.java	91:127 (25%) 93:129 (24%)	view
23	x 2	utils/src/main/java/jetb...ore/dataStructures/hash utils/src/main/java/jetb...ore/dataStructures/hash	IntLinkedHashMap.java LongLinkedHashMap.java	50:81 (13%) 50:81 (13%)	view
23	x 2	entity-store/src/main/ja...dus/entitystore/iterate entity-store/src/main/ja...dus/entitystore/iterate	EntitiesWithPropertyIterable.java PropertiesIterable.java	72:102 (32%) 132:162 (14%)	view
22	x 2	utils/src/main/java/jetb...ore/dataStructures/hash utils/src/main/java/jetb...ore/dataStructures/hash	IntHashMap.java IntLinkedHashMap.java	64:94 (16%) 76:106 (13%)	view
22	x 2	entity-store/src/main/ja...dus/entitystore/iterate entity-store/src/main/ja...dus/entitystore/iterate	MergeSortedIterable.java MergeSortedIterableWithValueGetter.java	55:89 (22%) 57:91 (22%)	view
22	x 2	query/src/main/kotlin/jetbrains/exodus/query query/src/main/kotlin/jetbrains/exodus/query	InMemoryMergeSortIterable.kt InMemoryMergeSortIterableWithValueGet...	41:74 (38%) 48:81 (34%)	view
22	x 2	utils/src/main/java/jetb...ore/dataStructures/hash utils/src/main/java/jetb...ore/dataStructures/hash	IntHashSet.java LongHashSet.java	133:159 (17%) 158:184 (14%)	view
22	x 2	entity-store/src/main/ko...titystore/iterate/binop entity-store/src/main/ko...titystore/iterate/binop	MinusIterable.kt MinusIterable.kt	80:109 (15%) 135:164 (15%)	view
21	x 2	utils/src/main/java/jetb...ore/dataStructures/hash utils/src/main/java/jetb...ore/dataStructures/hash	LongHashSet.java LongLinkedHashSet.java	60:92 (13%) 63:95 (14%)	view
20	x 2	entity-store/src/main/ja...dus/entitystore/iterate entity-store/src/main/ja...dus/entitystore/iterate	MergeSortedIterable.java MergeSortedIterableWithValueGetter.java	134:164 (20%) 132:162 (20%)	view
19	x 2	utils/src/main/java/jetb...ore/dataStructures/hash utils/src/main/java/jetb...ore/dataStructures/hash	IntLinkedHashMap.java LongLinkedHashMap.java	229:258 (11%) 229:258 (11%)	view
19	x 2	utils/src/main/java/jetb...ore/dataStructures/hash utils/src/main/java/jetb...ore/dataStructures/hash	IntLinkedHashMap.java LongLinkedHashMap.java	91:116 (11%) 91:116 (11%)	view
18	x 2	utils/src/main/java/jetb...taStructures/decorators utils/src/main/java/jetb...taStructures/decorators	LinkedHashSetDecorator.java QueueDecorator.java	49:76 (30%) 45:72 (24%)	view
18	x 2	entity-store/src/main/ja...dus/entitystore/iterate entity-store/src/main/ja...dus/entitystore/iterate	SortIndirectIterable.java SortIterable.java	87:114 (8%) 86:113 (4%)	view
18	x 2	environment/src/main/jav...rains/exodus/tree/btree environment/src/main/jav...rains/exodus/tree/btree	LeafNodeDup.java LeafNodeDupMutable.java	52:77 (11%) 42:67 (20%)	view
18	x 2	utils/src/main/java/jetb...ore/dataStructures/hash utils/src/main/java/jetb...ore/dataStructures/hash	IntHashSet.java LongHashSet.java	90:114 (14%) 108:132 (11%)	view
18	x 2	utils/src/main/java/jetb...taStructures/decorators utils/src/main/java/jetb...taStructures/decorators	HashSetDecorator.java QueueDecorator.java	50:77 (30%) 45:72 (24%)	view
18	x 2	query/src/main/kotlin/jetbrains/exodus/query query/src/main/kotlin/jetbrains/exodus/query	InMemoryMergeSortIterable.kt InMemoryMergeSortIterableWithValueGet...	76:100 (31%) 83:107 (28%)	view
17	x 2	utils/src/main/java/jetb...dus/core/dataStructures utils/src/main/java/jetb...dus/core/dataStructures	IntArrayList.java LongArrayList.java	31:59 (17%) 30:58 (17%)	view
17	x 2	environment/src/main/kotlin/jetbrains/exodus/log environment/src/main/kotlin/jetbrains/exodus/log	SeparateLogCache.kt SharedLogCache.kt	35:56 (19%) 37:58 (15%)	view
17	x 2	entity-store/src/main/ja...itystore/iterate/cached entity-store/src/main/ja...itystore/iterate/cached	SingleTypeSortedEntityIdArrayCachedIn... SingleTypeSortedSetEntityIdCachedInst...	49:75 (25%) 39:65 (40%)	view
16	x 2	utils/src/main/java/jetb...taStructures/persistent utils/src/main/java/jetb...taStructures/persistent	PersistentBitTreeLongMap.java PersistentBitTreeLongMap.java	369:389 (4%) 422:442 (4%)	view
16	x 2	utils/src/main/java/jetb...ore/dataStructures/hash utils/src/main/java/jetb...ore/dataStructures/hash	IntHashMap.java IntLinkedHashMap.java	167:192 (11%) 220:245 (9%)	view
16	x 2	entity-store/src/main/ja...dus/entitystore/iterate entity-store/src/main/ja...dus/entitystore/iterate	SortIterable.java SortResultIterable.java	86:111 (4%) 28:53 (30%)	view
16	x 2	utils/src/main/java/jetb...dus/core/dataStructures utils/src/main/java/jetb...dus/core/dataStructures	LongObjectCache.java ObjectCache.java	76:103 (9%) 78:103 (10%)	view
16	x 2	utils/src/main/java/jetb...ore/dataStructures/hash utils/src/main/java/jetb...ore/dataStructures/hash	HashMap.java LinkedHashMap.java	110:127 (9%) 81:98 (9%)	view
16	x 2	entity-store/src/main/ja...dus/entitystore/iterate entity-store/src/main/ja...dus/entitystore/iterate	SortIndirectIterable.java SortResultIterable.java	87:112 (7%) 28:53 (30%)	view
15	x 2	entity-store/src/main/ja...itystore/iterate/cached entity-store/src/main/ja...itystore/iterate/cached	MultiTypeSortedEntityIdArrayCachedIns... MultiTypeUnsortedEntityIdArrayCachedI...	56:77 (19%) 54:75 (23%)	view
15	x 2	utils/src/main/kotlin/je...ore/dataStructures/hash utils/src/main/kotlin/je...ore/dataStructures/hash	LongHashMap.kt LongLongHashMap.kt	34:55 (15%) 33:54 (10%)	view
14	x 2	utils/src/main/java/jetb...ore/dataStructures/hash utils/src/main/java/jetb...ore/dataStructures/hash	HashSet.java IntHashSet.java	146:167 (8%) 123:144 (10%)	view
14	x 2	utils/src/main/java/jetb...dus/core/dataStructures utils/src/main/java/jetb...dus/core/dataStructures	LongObjectCache.java ObjectCache.java	224:243 (8%) 214:233 (8%)	view
14	x 2	utils/src/main/java/jetb...ore/dataStructures/hash utils/src/main/java/jetb...ore/dataStructures/hash	LongHashSet.java LongLinkedHashSet.java	108:123 (9%) 119:134 (9%)	view
14	x 2	utils/src/main/java/jetb...ore/dataStructures/hash utils/src/main/java/jetb...ore/dataStructures/hash	IntHashSet.java LongLinkedHashSet.java	90:105 (10%) 119:134 (9%)	view
14	x 2	entity-store/src/main/ja...iterate/cached/iterator entity-store/src/main/ja...iterate/cached/iterator	OrderedEntityIdCollectionIterator.java ReverseOrderedEntityIdCollectionItera...	40:58 (37%) 40:58 (37%)	view
14	x 2	utils/src/main/java/jetb...dus/core/dataStructures utils/src/main/java/jetb...dus/core/dataStructures	IntArrayList.java LongArrayList.java	157:178 (14%) 160:181 (14%)	view
14	x 2	environment/src/main/jav...rains/exodus/tree/btree environment/src/main/jav...rains/exodus/tree/btree	BTree.java BTreeBase.java	78:91 (24%) 136:149 (10%)	view
14	x 2	utils/src/main/java/jetb...ore/dataStructures/hash utils/src/main/java/jetb...ore/dataStructures/hash	IntHashMap.java LongLinkedHashMap.java	79:94 (10%) 91:106 (8%)	view
14	x 2	utils/src/main/java/jetb...taStructures/persistent utils/src/main/java/jetb...taStructures/persistent	PersistentBitTreeLongMap.java PersistentBitTreeLongMap.java	80:99 (3%) 169:188 (3%)	view
14	x 2	environment/src/main/java/jetbrains/exodus/env environment/src/main/java/jetbrains/exodus/env	EnvironmentBackupStrategyImpl.java EnvironmentBackupStrategyImpl.java	140:160 (10%) 178:198 (10%)	view
14	x 2	entity-store/src/main/ja...dus/entitystore/iterate entity-store/src/main/ja...dus/entitystore/iterate	EntityIteratorFixingDecorator.java SortIterable.java	35:55 (53%) 512:532 (3%)	view
13	x 2	entity-store/src/main/ja...itystore/iterate/cached entity-store/src/main/ja...itystore/iterate/cached	MultiTypeUnsortedEntityIdArrayCachedI... SingleTypeUnsortedEntityIdArrayCached...	54:73 (20%) 89:108 (14%)	view
13	x 2	entity-store/src/main/ja...itystore/iterate/cached entity-store/src/main/ja...itystore/iterate/cached	MultiTypeSortedEntityIdArrayCachedIns... SingleTypeUnsortedEntityIdArrayCached...	56:75 (17%) 89:108 (14%)	view
13	x 2	environment/src/main/java/jetbrains/exodus/env environment/src/main/java/jetbrains/exodus/env	ContextualTemporaryEmptyStore.java TemporaryEmptyStore.java	34:50 (28%) 43:59 (26%)	view
13	x 2	utils/src/main/java/jetb...ore/dataStructures/hash utils/src/main/java/jetb...ore/dataStructures/hash	IntHashSet.java LongHashSet.java	64:84 (10%) 81:101 (8%)	view

Duplicated Units

The list of top 34 duplicated units.

See data for all 34 unit duplicates...

Size	#	Folders	Files	Lines	Code
26	x 2	utils/src/main/java/jetb...ore/dataStructures/hash utils/src/main/java/jetb...ore/dataStructures/hash	IntLinkedHashMap.java LongLinkedHashMap.java	49:79 49:79	view
20	x 2	utils/src/main/java/jetb...ore/dataStructures/hash utils/src/main/java/jetb...ore/dataStructures/hash	IntLinkedHashMap.java LongLinkedHashMap.java	90:113 90:113	view
19	x 2	utils/src/main/kotlin/je...ore/dataStructures/hash utils/src/main/kotlin/je...ore/dataStructures/hash	LongLongHashMap.kt LongHashMap.kt	32:52 33:53	view
19	x 2	utils/src/main/java/jetb...ore/dataStructures/hash utils/src/main/java/jetb...ore/dataStructures/hash	IntHashSet.java LongHashSet.java	89:111 107:129	view
16	x 2	utils/src/main/kotlin/je...ore/dataStructures/hash utils/src/main/kotlin/je...ore/dataStructures/hash	LongLongHashMap.kt LongHashMap.kt	56:73 57:74	view
15	x 2	utils/src/main/java/jetb...ore/dataStructures/hash utils/src/main/java/jetb...ore/dataStructures/hash	IntHashSet.java LongHashSet.java	63:82 80:99	view
15	x 3	utils/src/main/java/jetb...ore/dataStructures/hash utils/src/main/java/jetb...ore/dataStructures/hash utils/src/main/java/jetb...ore/dataStructures/hash	LinkedHashMap.java IntLinkedHashMap.java LongLinkedHashMap.java	157:173 165:181 165:181	view
14	x 2	utils/src/main/java/jetb...ore/dataStructures/hash utils/src/main/java/jetb...ore/dataStructures/hash	IntHashSet.java LongHashSet.java	147:162 172:187	view
14	x 2	utils/src/main/java/jetb...dus/core/dataStructures utils/src/main/java/jetb...dus/core/dataStructures	LongObjectCache.java ObjectCache.java	265:280 255:270	view
13	x 2	utils/src/main/java/jetb...ore/dataStructures/hash utils/src/main/java/jetb...ore/dataStructures/hash	LinkedHashSet.java HashSet.java	55:72 53:70	view
12	x 5	utils/src/main/java/jetb...ore/dataStructures/hash utils/src/main/java/jetb...ore/dataStructures/hash utils/src/main/java/jetb...ore/dataStructures/hash utils/src/main/java/jetb...ore/dataStructures/hash utils/src/main/java/jetb...ore/dataStructures/hash	LinkedHashMap.java LinkedHashSet.java IntLinkedHashMap.java LongLinkedHashSet.java LongLinkedHashMap.java	175:188 183:196 183:196 168:181 183:196	view
12	x 2	utils/src/main/java/jetb...ore/dataStructures/hash utils/src/main/java/jetb...ore/dataStructures/hash	LinkedHashMap.java LinkedHashSet.java	190:203 198:211	view
12	x 3	utils/src/main/java/jetb...ore/dataStructures/hash utils/src/main/java/jetb...ore/dataStructures/hash utils/src/main/java/jetb...ore/dataStructures/hash	IntLinkedHashMap.java LongLinkedHashSet.java LongLinkedHashMap.java	198:211 183:196 198:211	view
12	x 2	utils/src/main/java/jetb...dus/core/dataStructures utils/src/main/java/jetb...dus/core/dataStructures	LongObjectCache.java ObjectCache.java	139:152 139:152	view
11	x 2	utils/src/main/java/jetb...dus/core/dataStructures utils/src/main/java/jetb...dus/core/dataStructures	IntArrayList.java LongArrayList.java	41:53 40:52	view
10	x 2	utils/src/main/java/jetb...dus/core/dataStructures utils/src/main/java/jetb...dus/core/dataStructures	LongObjectCache.java ObjectCache.java	47:58 47:58	view
10	x 2	utils/src/main/java/jetb...dus/core/dataStructures utils/src/main/java/jetb...dus/core/dataStructures	LongObjectCache.java ObjectCache.java	104:115 104:115	view
9	x 2	environment/src/main/java/jetbrains/exodus/tree environment/src/main/jav...rains/exodus/tree/btree	TreeCursor.java AddressIterator.java	245:256 94:105	view
9	x 3	utils/src/main/java/jetb...ore/dataStructures/hash utils/src/main/java/jetb...ore/dataStructures/hash utils/src/main/java/jetb...ore/dataStructures/hash	IntHashSet.java LongHashSet.java IntHashMap.java	212:222 237:247 224:234	view
9	x 2	utils/src/main/java/jetb...ore/dataStructures/hash utils/src/main/java/jetb...ore/dataStructures/hash	IntLinkedHashMap.java LongLinkedHashMap.java	146:158 146:158	view
8	x 3	utils/src/main/java/jetb...ore/dataStructures/hash utils/src/main/java/jetb...ore/dataStructures/hash utils/src/main/java/jetb...ore/dataStructures/hash	IntHashSet.java LongHashSet.java LongLinkedHashSet.java	45:56 61:72 64:75	view
8	x 2	utils/src/main/java/jetb...dus/core/dataStructures utils/src/main/java/jetb...dus/core/dataStructures	LongObjectCache.java ObjectCache.java	254:263 244:253	view
7	x 2	query/src/main/java/jetbrains/exodus/query query/src/main/java/jetbrains/exodus/query	InMemoryQuickSortOnInitIterable.java InMemoryQuickSortTwoSidesIterable.java	45:53 45:53	view
7	x 2	entity-store/src/main/ja...dus/entitystore/iterate entity-store/src/main/ja...dus/entitystore/iterate	MergeSortedIterable.java MergeSortedIterableWithValueGetter.java	151:159 149:157	view
7	x 2	entity-store/src/main/ja...exodus/entitystore/util entity-store/src/main/ja...exodus/entitystore/util	MultiTypeEntityIdSet.java SingleTypeEntityIdSet.java	40:48 53:61	view
7	x 3	utils/src/main/java/jetb...ore/dataStructures/hash utils/src/main/java/jetb...ore/dataStructures/hash utils/src/main/java/jetb...ore/dataStructures/hash	LinkedHashMap.java IntLinkedHashMap.java LongLinkedHashMap.java	137:145 131:139 131:139	view
7	x 2	utils/src/main/java/jetb...dus/core/dataStructures utils/src/main/java/jetb...dus/core/dataStructures	IntArrayList.java LongArrayList.java	141:150 144:153	view
6	x 2	query/src/main/java/jetbrains/exodus/query query/src/main/java/jetbrains/exodus/query	InMemoryQuickSortOnInitIterable.java InMemoryQuickSortTwoSidesIterable.java	60:67 60:67	view
6	x 2	entity-store/src/main/ja...exodus/entitystore/util entity-store/src/main/ja...exodus/entitystore/util	MultiTypeEntityIdSet.java SingleTypeEntityIdSet.java	72:79 85:92	view
6	x 2	utils/src/main/kotlin/je...dus/core/dataStructures utils/src/main/kotlin/je...dus/core/dataStructures	LongObjectCacheBase.kt IntObjectCacheBase.kt	41:48 41:48	view
6	x 2	utils/src/main/java/jetb...ore/dataStructures/hash utils/src/main/java/jetb...ore/dataStructures/hash	IntHashSet.java LongHashSet.java	138:145 163:170	view
6	x 2	utils/src/main/java/jetb...ore/dataStructures/hash utils/src/main/java/jetb...ore/dataStructures/hash	IntHashMap.java HashMap.java	113:120 155:162	view
6	x 2	utils/src/main/java/jetb...taStructures/decorators utils/src/main/java/jetb...taStructures/decorators	LinkedHashSetDecorator.java HashSetDecorator.java	76:83 77:84	view
6	x 2	utils/src/main/java/jetb...taStructures/decorators utils/src/main/java/jetb...taStructures/decorators	LinkedHashSetDecorator.java HashSetDecorator.java	103:110 104:111	view