alibaba / druid - Conditional Complexity

Intro

Conditional complexity (also called cyclomatic complexity) is a term used to measure the complexity of software. The term refers to the number of possible paths through a program function. A higher value ofter means higher maintenance and testing costs (infosecinstitute.com).
Conditional complexity is calculated by counting all conditions in the program that can affect the execution path (e.g. if statement, loops, switches, and/or operators, try and catch blocks...).
Conditional complexity is measured at the unit level (methods, functions...).
Units are classified in four categories based on the measured McCabe index: 1-5 (simple units), 6-10 (medium complex units), 11-25 (complex units), 26+ (very complex units).

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Conditional Complexity Overall

There are 23,073 units with 189,966 lines of code in units (76.4% of code).

56 very complex units (16,297 lines of code)
162 complex units (17,415 lines of code)
547 medium complex units (27,768 lines of code)
917 simple units (22,630 lines of code)
21,391 very simple units (105,856 lines of code)

Legend:

51+

26-50

11-25

6-10

1-5

Alternative Visuals

3D view of all units

Conditional Complexity per Extension

51+

26-50

11-25

6-10

1-5

Conditional Complexity per Logical Component

primary logical decomposition

51+

26-50

11-25

6-10

1-5

Most Complex Units

Top 50 most complex units

Unit	# lines	McCabe index	# params
public SQLExpr primary() in core/src/main/java/com/alibaba/druid/sql/parser/SQLExprParser.java	772	330	0
public SQLStatement parseShow() in core/src/main/java/com/alibaba/druid/sql/dialect/mysql/parser/MySqlStatementParser.java	1191	278	0
public SQLTableSource parseTableSourceRest() in core/src/main/java/com/alibaba/druid/sql/parser/SQLSelectParser.java	513	175	1
protected String tableAlias() in core/src/main/java/com/alibaba/druid/sql/parser/SQLParser.java	349	157	1
public boolean parseStatementListDialect() in core/src/main/java/com/alibaba/druid/sql/dialect/mysql/parser/MySqlStatementParser.java	539	153	1
public SQLCreateTableStatement parseCreateTable() in core/src/main/java/com/alibaba/druid/sql/dialect/odps/parser/OdpsCreateTableParser.java	376	153	0
protected String alias() in core/src/main/java/com/alibaba/druid/sql/parser/SQLParser.java	186	142	0
public final SQLType scanSQLType() in core/src/main/java/com/alibaba/druid/sql/parser/Lexer.java	303	140	0
public SQLName name() in core/src/main/java/com/alibaba/druid/sql/parser/SQLExprParser.java	177	138	0
public void parseStatementList() in core/src/main/java/com/alibaba/druid/sql/parser/SQLStatementParser.java	516	123	3
public MySqlCreateTableStatement parseCreateTable() in core/src/main/java/com/alibaba/druid/sql/dialect/mysql/parser/MySqlCreateTableParser.java	416	120	0
private boolean parseAlterSpecification() in core/src/main/java/com/alibaba/druid/sql/dialect/mysql/parser/MySqlStatementParser.java	587	114	1
public void parseStatementList() in core/src/main/java/com/alibaba/druid/sql/dialect/oracle/parser/OracleStatementParser.java	584	113	3
public static ZonedDateTime parseDateTime() in core/src/main/java/com/alibaba/druid/util/MySqlUtils.java	427	112	4
public boolean parseStatementListDialect() in core/src/main/java/com/alibaba/druid/sql/dialect/odps/parser/OdpsStatementParser.java	460	109	1
protected String as() in core/src/main/java/com/alibaba/druid/sql/parser/SQLParser.java	178	101	0
public final void nextToken() in core/src/main/java/com/alibaba/druid/sql/parser/Lexer.java	252	98	0
public static boolean visit() in core/src/main/java/com/alibaba/druid/sql/visitor/SQLEvalVisitorUtils.java	377	92	2
public void computeUserAgent() in core/src/main/java/com/alibaba/druid/support/http/stat/WebAppStat.java	239	92	1
public SQLExpr primary() in core/src/main/java/com/alibaba/druid/sql/dialect/mysql/parser/MySqlExprParser.java	328	90	0
public static void acceptTableSource() in core/src/main/java/com/alibaba/druid/sql/SQLUtils.java	314	88	4
public static boolean check() in core/src/main/java/com/alibaba/druid/sql/ast/expr/SQLTimestampExpr.java	301	84	1
protected void parseValueClauseNative() in core/src/main/java/com/alibaba/druid/sql/parser/SQLStatementParser.java	298	81	4
public SQLExpr relationalRest() in core/src/main/java/com/alibaba/druid/sql/parser/SQLExprParser.java	308	81	1
public int jdbcType() in core/src/main/java/com/alibaba/druid/sql/ast/SQLDataTypeImpl.java	167	81	0
protected void parsePrivilege() in core/src/main/java/com/alibaba/druid/sql/parser/SQLStatementParser.java	268	78	2
public static DbType getDbTypeRaw() in core/src/main/java/com/alibaba/druid/util/JdbcUtils.java	126	78	2
protected SQLExpr parseSelectItemRest() in core/src/main/java/com/alibaba/druid/sql/dialect/mysql/parser/MySqlExprParser.java	250	75	2
public SQLInsertStatement parseInsert() in core/src/main/java/com/alibaba/druid/sql/dialect/mysql/parser/MySqlStatementParser.java	306	73	0
public static boolean visit() in core/src/main/java/com/alibaba/druid/sql/visitor/SQLEvalVisitorUtils.java	210	72	2
protected void parseOptions() in core/src/main/java/com/alibaba/druid/sql/dialect/mysql/parser/MySqlCreateTableParser.java	353	71	1
public static String getDriverClassName() in core/src/main/java/com/alibaba/druid/util/JdbcUtils.java	154	70	1
public void parseValueClause() in core/src/main/java/com/alibaba/druid/sql/parser/SQLStatementParser.java	236	69	1
public void scanComment() in core/src/main/java/com/alibaba/druid/sql/dialect/mysql/parser/MySqlLexer.java	178	67	0
public OracleCreateTableStatement parseCreateTable() in core/src/main/java/com/alibaba/druid/sql/dialect/oracle/parser/OracleCreateTableParser.java	306	67	0
protected void parseValueClause() in core/src/main/java/com/alibaba/druid/sql/parser/SQLStatementParser.java	235	67	4
static void resolveIdent() in core/src/main/java/com/alibaba/druid/sql/repository/SchemaResolveVisitorFactory.java	186	65	2
public boolean visit() in core/src/main/java/com/alibaba/druid/sql/dialect/mysql/visitor/MySqlOutputVisitor.java	149	64	1
public SQLExpr primary() in core/src/main/java/com/alibaba/druid/sql/dialect/oracle/parser/OracleExprParser.java	186	63	0
public void skipFirstHintsOrMultiCommentAndNextToken() in core/src/main/java/com/alibaba/druid/sql/dialect/mysql/parser/MySqlLexer.java	71	62	0
public SQLExpr primaryRest() in core/src/main/java/com/alibaba/druid/sql/dialect/odps/parser/OdpsExprParser.java	203	62	1
protected SQLExpr methodRest() in core/src/main/java/com/alibaba/druid/sql/parser/SQLExprParser.java	232	61	2
public static List splitAndRemoveComment() in core/src/main/java/com/alibaba/druid/sql/parser/SQLParserUtils.java	163	60	2
public boolean visit() in core/src/main/java/com/alibaba/druid/support/calcite/CalciteMySqlNodeVisitor.java	171	58	1
public boolean visit() in core/src/main/java/com/alibaba/druid/sql/dialect/mysql/visitor/MySqlOutputVisitor.java	121	56	1
public boolean parseStatementListDialect() in core/src/main/java/com/alibaba/druid/sql/dialect/hive/parser/HiveStatementParser.java	198	56	1
public void scanNumber() in core/src/main/java/com/alibaba/druid/sql/parser/Lexer.java	133	56	0
public SQLStatement parseCreateDatabase() in core/src/main/java/com/alibaba/druid/sql/dialect/mysql/parser/MySqlStatementParser.java	194	55	0
protected void parserParameters() in core/src/main/java/com/alibaba/druid/sql/dialect/oracle/parser/OracleStatementParser.java	229	54	2
public SQLSelectQuery queryRest() in core/src/main/java/com/alibaba/druid/sql/parser/SQLSelectParser.java	207	54	2