GoogleCloudPlatform / cloud-spanner-emulator

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:

53,812 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
7,191 duplicated lines

2,289 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 2,289 duplicates...

Size	#	Folders	Files	Lines	Code
37	x 2	backend/schema/updater/schema_updater_tests backend/schema/updater/schema_updater_tests	sequence.cc sequence.cc	1101:1139 (1%) 1163:1201 (1%)	view
30	x 2	backend/schema/updater backend/schema/updater	sql_expression_validators.cc sql_expression_validators.cc	182:232 (10%) 266:316 (10%)	view
29	x 2	backend/query backend/query	queryable_property_graph.h queryable_property_graph.h	181:220 (9%) 264:303 (9%)	view
28	x 2	backend/schema/updater/schema_updater_tests backend/schema/updater/schema_updater_tests	sequence.cc sequence.cc	941:972 (1%) 976:1007 (1%)	view
27	x 2	backend/schema/updater/schema_updater_tests backend/schema/updater/schema_updater_tests	sequence.cc sequence.cc	597:626 (1%) 747:776 (1%)	view
27	x 2	backend/schema/updater/schema_updater_tests backend/schema/updater/schema_updater_tests	sequence.cc sequence.cc	597:626 (1%) 651:680 (1%)	view
27	x 2	backend/schema/updater/schema_updater_tests backend/schema/updater/schema_updater_tests	sequence.cc sequence.cc	651:680 (1%) 747:776 (1%)	view
26	x 2	backend/query backend/query	pg_catalog.cc pg_catalog.cc	1982:2031 (1%) 2121:2170 (1%)	view
25	x 2	backend/query backend/query	pg_catalog.cc pg_catalog.cc	1939:1966 (1%) 2074:2101 (1%)	view
24	x 2	backend/schema/updater/schema_updater_tests backend/schema/updater/schema_updater_tests	sequence.cc sequence.cc	597:622 (1%) 705:730 (1%)	view
24	x 2	backend/schema/updater/schema_updater_tests backend/schema/updater/schema_updater_tests	sequence.cc sequence.cc	705:730 (1%) 747:772 (1%)	view
24	x 2	backend/schema/updater/schema_updater_tests backend/schema/updater/schema_updater_tests	sequence.cc sequence.cc	651:676 (1%) 705:730 (1%)	view
23	x 2	backend/schema/updater/schema_updater_tests backend/schema/updater/schema_updater_tests	sequence.cc sequence.cc	1985:2011 (1%) 2068:2094 (1%)	view
22	x 2	backend/query backend/query	pg_catalog.cc pg_catalog.cc	1451:1492 (1%) 1608:1649 (1%)	view
22	x 2	backend/query backend/query	pg_catalog.cc pg_catalog.cc	2339:2380 (1%) 2398:2439 (1%)	view
21	x 2	backend/schema/updater/schema_updater_tests backend/schema/updater/schema_updater_tests	foreign_key.cc foreign_key.cc	308:329 (4%) 356:377 (4%)	view
20	x 2	backend/schema/updater/schema_updater_tests backend/schema/updater/schema_updater_tests	sequence.cc sequence.cc	1895:1916 (<1%) 2068:2089 (<1%)	view
20	x 2	backend/schema/updater/schema_updater_tests backend/schema/updater/schema_updater_tests	sequence.cc sequence.cc	1407:1426 (<1%) 1550:1569 (<1%)	view
20	x 2	backend/query backend/query	pg_catalog.cc pg_catalog.cc	582:618 (1%) 648:684 (1%)	view
20	x 2	backend/schema/updater/schema_updater_tests backend/schema/updater/schema_updater_tests	sequence.cc sequence.cc	1735:1754 (<1%) 1863:1882 (<1%)	view
20	x 2	backend/schema/updater/schema_updater_tests backend/schema/updater/schema_updater_tests	sequence.cc sequence.cc	1895:1916 (<1%) 1985:2006 (<1%)	view
20	x 2	frontend/handlers frontend/handlers	reads.cc reads.cc	69:100 (24%) 123:154 (24%)	view
19	x 2	frontend/handlers frontend/handlers	queries.cc queries.cc	254:287 (5%) 412:444 (5%)	view
19	x 2	backend/schema/updater/schema_updater_tests backend/schema/updater/schema_updater_tests	sequence.cc sequence.cc	97:117 (<1%) 547:566 (<1%)	view
19	x 2	backend/schema/updater/schema_updater_tests backend/schema/updater/schema_updater_tests	table.cc table.cc	687:708 (1%) 713:735 (1%)	view
18	x 2	backend/schema/updater/schema_updater_tests backend/schema/updater/schema_updater_tests	sequence.cc sequence.cc	500:519 (<1%) 976:995 (<1%)	view
18	x 2	backend/schema/updater/schema_updater_tests backend/schema/updater/schema_updater_tests	sequence.cc sequence.cc	500:519 (<1%) 941:960 (<1%)	view
18	x 2	backend/schema/updater/schema_updater_tests backend/schema/updater/schema_updater_tests	sequence.cc sequence.cc	1992:2015 (<1%) 2177:2201 (<1%)	view
17	x 2	backend/schema/updater/schema_updater_tests backend/schema/updater/schema_updater_tests	sequence.cc sequence.cc	1485:1501 (<1%) 1802:1818 (<1%)	view
17	x 2	backend/schema/updater/schema_updater_tests backend/schema/updater/schema_updater_tests	index.cc index.cc	1559:1575 (1%) 1583:1599 (1%)	view
17	x 2	backend/schema/updater/schema_updater_tests backend/schema/updater/schema_updater_tests	sequence.cc sequence.cc	1409:1425 (<1%) 2129:2145 (<1%)	view
17	x 2	backend/schema/updater/schema_updater_tests backend/schema/updater/schema_updater_tests	index.cc index.cc	1489:1505 (1%) 1523:1539 (1%)	view
17	x 2	backend/schema/updater/schema_updater_tests backend/schema/updater/schema_updater_tests	sequence.cc sequence.cc	427:445 (<1%) 1615:1633 (<1%)	view
17	x 2	backend/schema/validators backend/schema/validators	udf_validator.cc view_validator.cc	142:161 (17%) 154:176 (17%)	view
17	x 2	backend/schema/updater/schema_updater_tests backend/schema/updater/schema_updater_tests	sequence.cc sequence.cc	1552:1568 (<1%) 2129:2145 (<1%)	view
17	x 2	backend/schema/updater/schema_updater_tests backend/schema/updater/schema_updater_tests	sequence.cc sequence.cc	829:847 (<1%) 1029:1047 (<1%)	view
17	x 2	backend/schema/updater/schema_updater_tests backend/schema/updater/schema_updater_tests	sequence.cc sequence.cc	904:922 (<1%) 1029:1047 (<1%)	view
17	x 2	backend/schema/updater/schema_updater_tests backend/schema/updater/schema_updater_tests	sequence.cc sequence.cc	829:847 (<1%) 904:922 (<1%)	view
17	x 2	backend/schema/updater/schema_updater_tests backend/schema/updater/schema_updater_tests	proto_bundle.cc proto_bundle.cc	264:284 (4%) 304:324 (4%)	view
17	x 2	backend/schema/updater/schema_updater_tests backend/schema/updater/schema_updater_tests	index.cc index.cc	1525:1541 (1%) 1559:1575 (1%)	view
17	x 2	backend/schema/updater/schema_updater_tests backend/schema/updater/schema_updater_tests	index.cc index.cc	1525:1541 (1%) 1583:1599 (1%)	view
17	x 2	backend/schema/updater/schema_updater_tests backend/schema/updater/schema_updater_tests	sequence.cc sequence.cc	427:445 (<1%) 2263:2281 (<1%)	view
17	x 2	backend/schema/updater/schema_updater_tests backend/schema/updater/schema_updater_tests	sequence.cc sequence.cc	1615:1633 (<1%) 2263:2281 (<1%)	view
16	x 2	backend/schema/updater/schema_updater_tests backend/schema/updater/schema_updater_tests	sequence.cc sequence.cc	328:346 (<1%) 1615:1632 (<1%)	view
16	x 2	backend/schema/updater/schema_updater_tests backend/schema/updater/schema_updater_tests	sequence.cc sequence.cc	140:155 (<1%) 1671:1686 (<1%)	view
16	x 2	backend/schema/updater/schema_updater_tests backend/schema/updater/schema_updater_tests	sequence.cc sequence.cc	500:517 (<1%) 1029:1046 (<1%)	view
16	x 2	backend/schema/updater/schema_updater_tests backend/schema/updater/schema_updater_tests	proto_bundle.cc proto_bundle.cc	225:243 (4%) 304:322 (4%)	view
16	x 2	backend/schema/updater/schema_updater_tests backend/schema/updater/schema_updater_tests	sequence.cc sequence.cc	865:882 (<1%) 941:958 (<1%)	view
16	x 2	backend/schema/updater/schema_updater_tests backend/schema/updater/schema_updater_tests	sequence.cc sequence.cc	865:882 (<1%) 904:921 (<1%)	view
16	x 2	backend/schema/updater/schema_updater_tests backend/schema/updater/schema_updater_tests	sequence.cc sequence.cc	865:882 (<1%) 976:993 (<1%)	view

Duplicated Units

The list of top 4 duplicated units.

See data for all 4 unit duplicates...

Size	#	Folders	Files	Lines	Code
17	x 2	backend/query/search backend/query/search	substring_tokenizer.cc ngrams_tokenizer.cc	50:69 40:59	view
12	x 2	backend/query backend/query	queryable_named_schema.cc catalog.cc	38:53 373:388	view
10	x 2	backend/query/search backend/query/search	substring_tokenizer.cc plain_full_text_tokenizer.cc	71:85 39:53	view
8	x 2	backend/query backend/query	queryable_named_schema.cc catalog.cc	95:104 487:496	view