apache / tomcat - 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 20,204 units with 195,785 lines of code in units (71.1% of code).

31 very complex units (7,670 lines of code)
123 complex units (13,036 lines of code)
642 medium complex units (34,075 lines of code)
1,217 simple units (33,306 lines of code)
18,191 very simple units (107,698 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
private int jjMoveNfa_0() in java/org/apache/tomcat/util/json/JSONParserTokenManager.java	380	154	2
private int jjMoveNfa_2() in java/org/apache/el/parser/ELParserTokenManager.java	426	139	2
private int jjMoveNfa_1() in java/org/apache/el/parser/ELParserTokenManager.java	426	139	2
public String toXml() in java/org/apache/tomcat/util/descriptor/web/WebXml.java	624	121	0
public EmbeddedServletOptions() in java/org/apache/jasper/EmbeddedServletOptions.java	362	114	2
public boolean merge() in java/org/apache/tomcat/util/descriptor/web/WebXml.java	364	106	1
protected void generateClass() in java/org/apache/jasper/compiler/JDTCompiler.java	403	99	1
protected void serveResource() in java/org/apache/catalina/servlets/DefaultServlet.java	271	85	4
protected void saveInternal() in java/org/apache/catalina/users/DataSourceUserDatabase.java	409	82	1
protected void doLock() in java/org/apache/catalina/servlets/WebdavServlet.java	316	80	2
static in java/org/apache/tomcat/util/http/parser/HttpParser.java	45	74	0
public final void action() in java/org/apache/coyote/AbstractProcessor.java	259	71	2
public void invoke() in java/org/apache/catalina/valves/rewrite/RewriteValve.java	216	70	2
private int jjMoveNfa_0() in java/org/apache/el/parser/ELParserTokenManager.java	220	66	2
boolean parseRequestLine() in java/org/apache/coyote/http11/Http11InputBuffer.java	185	65	3
private boolean addCertificate() in java/org/apache/tomcat/util/net/openssl/panama/OpenSSLContext.java	345	65	2
final public void Compare() in java/org/apache/el/parser/ELParser.java	243	64	0
private void checkXmlAttributes() in java/org/apache/jasper/compiler/Validator.java	136	61	3
public static PoolConfiguration parsePoolProperties() in modules/jdbc-pool/src/main/java/org/apache/tomcat/jdbc/pool/DataSourceFactory.java	239	60	1
protected String getCGIVariable() in java/org/apache/catalina/ssi/SSIServletExternalResolver.java	149	60	1
protected static void parseRuleFlag() in java/org/apache/catalina/valves/rewrite/RewriteValve.java	106	58	3
final public void Unary() in java/org/apache/el/parser/ELParser.java	213	56	0
public SocketState service() in java/org/apache/coyote/http11/Http11Processor.java	182	56	1
protected void startInternal() in java/org/apache/catalina/core/StandardContext.java	214	54	0
public static Method getMethod() in java/org/apache/el/util/ReflectionUtil.java	145	53	5
public String interpreterCall() in java/org/apache/jasper/optimizations/ELInterpreterTagSetters.java	166	53	5
public void invoke() in java/org/apache/catalina/authenticator/AuthenticatorBase.java	120	52	2
protected boolean filter() in java/org/apache/catalina/loader/WebappClassLoaderBase.java	74	52	2
private static final boolean jjCanMove_1() in java/org/apache/el/parser/ELParserTokenManager.java	110	51	5
public SocketState process() in java/org/apache/coyote/AbstractProtocol.java	165	51	2
public static void init() in java/org/apache/tomcat/util/net/openssl/panama/OpenSSLLibrary.java	157	51	0
private static final boolean jjCanMove_2() in java/org/apache/el/parser/ELParserTokenManager.java	105	50	5
private void prepareRequest() in java/org/apache/coyote/ajp/AjpProcessor.java	164	50	0
public void init() in java/org/apache/tomcat/util/net/openssl/panama/OpenSSLContext.java	163	49	3
public void setArgs() in java/org/apache/jasper/JspC.java	121	48	1
private void processChars() in java/org/apache/jasper/compiler/JspDocumentParser.java	112	48	0
public HeaderParseStatus parseHeader() in java/org/apache/tomcat/util/http/parser/HttpHeaderParser.java	134	48	0
private Session connectToServerRecursive() in java/org/apache/tomcat/websocket/WsWebSocketContainer.java	207	47	4
public void visit() in java/org/apache/jasper/compiler/Validator.java	101	46	1
private void configureContext() in java/org/apache/catalina/startup/ContextConfig.java	159	46	1
private static Wrapper findWrapper() in java/jakarta/el/Util.java	118	45	6
protected void processAnnotationWebFilter() in java/org/apache/catalina/startup/ContextConfig.java	120	45	3
protected boolean postParseRequest() in java/org/apache/catalina/connector/CoyoteAdapter.java	178	45	4
final public void Multiplication() in java/org/apache/el/parser/ELParser.java	172	44	0
public static String canonize() in java/org/apache/tomcat/util/net/IPv6Utils.java	120	42	1
protected void deployWAR() in java/org/apache/catalina/startup/HostConfig.java	131	42	2
public boolean asyncDispatch() in java/org/apache/catalina/connector/CoyoteAdapter.java	140	42	3
private boolean copyResource() in java/org/apache/catalina/servlets/WebdavServlet.java	123	41	3
private void processGlobalResourcesChange() in java/org/apache/catalina/core/NamingContextListener.java	116	41	3
protected final void prepareResponse() in java/org/apache/coyote/http11/Http11Processor.java	118	40	0