HttpClient - JDepend Source Code Analysis

Metric Results

[ summary ] [ packages ] [ cycles ] [ explanations ]

The following document contains the results of a JDepend metric analysis. The various metrics are defined at the bottom of this document.

Summary

[ summary ] [ packages ] [ cycles ] [ explanations ]

Package	TC	AC	CC	AC	EC	A	I	D
org.apache.commons.httpclient	66	7	59	6	16	0.11	73%	17%
org.apache.commons.httpclient.auth	20	5	15	1	10	0.25	91%	16%
org.apache.commons.httpclient.cookie	7	2	5	1	6	0.29	86%	14%
org.apache.commons.httpclient.methods	14	3	11	1	8	0.21	89%	10%
org.apache.commons.httpclient.methods.multipart	8	3	5	1	7	0.38	88%	25%
org.apache.commons.httpclient.params	9	2	7	5	5	0.22	50%	28%
org.apache.commons.httpclient.protocol	9	3	6	1	10	0.33	91%	24%
org.apache.commons.httpclient.util	14	0	14	6	11	0	65%	35%

Packages

[ summary ] [ packages ] [ cycles ] [ explanations ]

org.apache.commons.httpclient

Afferent Couplings	Efferent Couplings	Abstractness	Instability	Distance
6	16	11%	73%	17%

Abstract Classes	Concrete Classes	Used by Packages	Uses Packages
Credentials HttpConnectionManager HttpMethod HttpMethodBase HttpMethodRetryHandler MethodRetryHandler ResponseConsumedWatcher	AutoCloseInputStream ChunkedInputStream ChunkedOutputStream CircularRedirectException ConnectMethod ConnectTimeoutException ConnectionPoolTimeoutException ContentLengthInputStream Cookie DefaultHttpMethodRetryHandler DefaultMethodRetryHandler Header HeaderElement HeaderGroup HostConfiguration HttpClient HttpClientError HttpConnection HttpConstants HttpException HttpHost HttpMethodBase$1 HttpMethodDirector HttpParser HttpRecoverableException HttpState HttpStatus HttpURL HttpVersion HttpsURL MultiThreadedHttpConnectionManager MultiThreadedHttpConnectionManager$1 MultiThreadedHttpConnectionManager$ConnectionPool MultiThreadedHttpConnectionManager$ConnectionSource MultiThreadedHttpConnectionManager$HostConnectionPool MultiThreadedHttpConnectionManager$HttpConnectionAdapter MultiThreadedHttpConnectionManager$HttpConnectionWithReference MultiThreadedHttpConnectionManager$ReferenceQueueThread MultiThreadedHttpConnectionManager$WaitingThread NTCredentials NameValuePair NoHttpResponseException ProtocolException ProxyClient ProxyClient$1 ProxyClient$ConnectResponse ProxyClient$DummyConnectionManager ProxyHost RedirectException SimpleHttpConnectionManager StatusLine URI URI$DefaultCharsetChanged URI$LocaleToCharsetMap URIException UsernamePasswordCredentials Wire WireLogInputStream WireLogOutputStream	org.apache.commons.httpclient.auth org.apache.commons.httpclient.cookie org.apache.commons.httpclient.methods org.apache.commons.httpclient.params org.apache.commons.httpclient.protocol org.apache.commons.httpclient.util	java.io java.lang java.lang.ref java.lang.reflect java.net java.security java.text java.util org.apache.commons.codec org.apache.commons.codec.net org.apache.commons.httpclient.auth org.apache.commons.httpclient.cookie org.apache.commons.httpclient.params org.apache.commons.httpclient.protocol org.apache.commons.httpclient.util org.apache.commons.logging

org.apache.commons.httpclient.auth

Afferent Couplings	Efferent Couplings	Abstractness	Instability	Distance
1	10	25%	91%	16%

Abstract Classes	Concrete Classes	Used by Packages	Uses Packages
AuthPolicy AuthScheme AuthSchemeBase CredentialsProvider RFC2617Scheme	AuthChallengeException AuthChallengeParser AuthChallengeProcessor AuthScope AuthState AuthenticationException BasicScheme CredentialsNotAvailableException DigestScheme HttpAuthRealm HttpAuthenticator InvalidCredentialsException MalformedChallengeException NTLM NTLMScheme	org.apache.commons.httpclient	java.lang java.security java.util javax.crypto javax.crypto.spec org.apache.commons.codec.binary org.apache.commons.httpclient org.apache.commons.httpclient.params org.apache.commons.httpclient.util org.apache.commons.logging

org.apache.commons.httpclient.cookie

Afferent Couplings	Efferent Couplings	Abstractness	Instability	Distance
1	6	29%	86%	14%

Abstract Classes	Concrete Classes	Used by Packages	Uses Packages
CookiePolicy CookieSpec	CookieSpecBase IgnoreCookiesSpec MalformedCookieException NetscapeDraftSpec RFC2109Spec	org.apache.commons.httpclient	java.lang java.text java.util org.apache.commons.httpclient org.apache.commons.httpclient.util org.apache.commons.logging

org.apache.commons.httpclient.methods

Afferent Couplings	Efferent Couplings	Abstractness	Instability	Distance
1	8	21%	89%	10%

Abstract Classes	Concrete Classes	Used by Packages	Uses Packages
EntityEnclosingMethod ExpectContinueMethod RequestEntity	ByteArrayRequestEntity DeleteMethod GetMethod HeadMethod InputStreamRequestEntity MultipartPostMethod OptionsMethod PostMethod PutMethod StringRequestEntity TraceMethod	org.apache.commons.httpclient.methods.multipart	java.io java.lang java.util org.apache.commons.httpclient org.apache.commons.httpclient.methods.multipart org.apache.commons.httpclient.params org.apache.commons.httpclient.util org.apache.commons.logging

org.apache.commons.httpclient.methods.multipart

Afferent Couplings	Efferent Couplings	Abstractness	Instability	Distance
1	7	38%	88%	25%

Abstract Classes	Concrete Classes	Used by Packages	Uses Packages
Part PartBase PartSource	ByteArrayPartSource FilePart FilePartSource MultipartRequestEntity StringPart	org.apache.commons.httpclient.methods	java.io java.lang java.util org.apache.commons.httpclient.methods org.apache.commons.httpclient.params org.apache.commons.httpclient.util org.apache.commons.logging

org.apache.commons.httpclient.params

Afferent Couplings	Efferent Couplings	Abstractness	Instability	Distance
5	5	22%	50%	28%

Abstract Classes	Concrete Classes	Used by Packages	Uses Packages
HttpParams HttpParamsFactory	DefaultHttpParams DefaultHttpParamsFactory HostParams HttpClientParams HttpConnectionManagerParams HttpConnectionParams HttpMethodParams	org.apache.commons.httpclient org.apache.commons.httpclient.auth org.apache.commons.httpclient.methods org.apache.commons.httpclient.methods.multipart org.apache.commons.httpclient.protocol	java.io java.lang java.util org.apache.commons.httpclient org.apache.commons.logging

org.apache.commons.httpclient.protocol

Afferent Couplings	Efferent Couplings	Abstractness	Instability	Distance
1	10	33%	91%	24%

Abstract Classes	Concrete Classes	Used by Packages	Uses Packages
ControllerThreadSocketFactory$SocketTask ProtocolSocketFactory SecureProtocolSocketFactory	ControllerThreadSocketFactory ControllerThreadSocketFactory$1 DefaultProtocolSocketFactory Protocol ReflectionSocketFactory SSLProtocolSocketFactory	org.apache.commons.httpclient	java.io java.lang java.lang.reflect java.net java.util javax.net javax.net.ssl org.apache.commons.httpclient org.apache.commons.httpclient.params org.apache.commons.httpclient.util

org.apache.commons.httpclient.util

Afferent Couplings	Efferent Couplings	Abstractness	Instability	Distance
6	11	0%	65%	35%

Abstract Classes	Concrete Classes	Used by Packages	Uses Packages
None	DateParseException DateParser DateUtil EncodingUtil ExceptionUtil HttpURLConnection IdleConnectionHandler IdleConnectionTimeoutThread LangUtils ParameterParser TimeoutController TimeoutController$TimeoutException URIUtil URIUtil$Coder	org.apache.commons.httpclient org.apache.commons.httpclient.auth org.apache.commons.httpclient.cookie org.apache.commons.httpclient.methods org.apache.commons.httpclient.methods.multipart org.apache.commons.httpclient.protocol	java.io java.lang java.lang.reflect java.net java.security java.text java.util org.apache.commons.codec org.apache.commons.codec.net org.apache.commons.httpclient org.apache.commons.logging

Cycles

[ summary ] [ packages ] [ cycles ] [ explanations ]

Package	Cyclic Dependencies
org.apache.commons.httpclient	org.apache.commons.httpclient.util org.apache.commons.httpclient
org.apache.commons.httpclient.auth	org.apache.commons.httpclient.util org.apache.commons.httpclient org.apache.commons.httpclient.util
org.apache.commons.httpclient.cookie	org.apache.commons.httpclient org.apache.commons.httpclient.util org.apache.commons.httpclient
org.apache.commons.httpclient.methods	org.apache.commons.httpclient org.apache.commons.httpclient.util org.apache.commons.httpclient
org.apache.commons.httpclient.methods.multipart	org.apache.commons.httpclient.util org.apache.commons.httpclient org.apache.commons.httpclient.util
org.apache.commons.httpclient.params	org.apache.commons.httpclient org.apache.commons.httpclient.util org.apache.commons.httpclient
org.apache.commons.httpclient.protocol	org.apache.commons.httpclient.util org.apache.commons.httpclient org.apache.commons.httpclient.util
org.apache.commons.httpclient.util	org.apache.commons.httpclient org.apache.commons.httpclient.util

Explanations

[ summary ] [ packages ] [ cycles ] [ explanations ]

The following explanations are for quick reference and are lifted directly from the original JDepend documentation .

Term	Description
Number of Classes	The number of concrete and abstract classes (and interfaces) in the package is an indicator of the extensibility of the package.
Afferent Couplings	The number of other packages that depend upon classes within the package is an indicator of the package's responsibility.
Efferent Couplings	The number of other packages that the classes in the package depend upon is an indicator of the package's independence.
Abstractness	The ratio of the number of abstract classes (and interfaces) in the analyzed package to the total number of classes in the analyzed package. The range for this metric is 0 to 1, with A=0 indicating a completely concrete package and A=1 indicating a completely abstract package.
Instability	The ratio of efferent coupling (Ce) to total coupling (Ce / (Ce + Ca)). This metric is an indicator of the package's resilience to change. The range for this metric is 0 to 1, with I=0 indicating a completely stable package and I=1 indicating a completely instable package.
Distance	The perpendicular distance of a package from the idealized line A + I = 1. This metric is an indicator of the package's balance between abstractness and stability. A package squarely on the main sequence is optimally balanced with respect to its abstractness and stability. Ideal packages are either completely abstract and stable (x=0, y=1) or completely concrete and instable (x=1, y=0). The range for this metric is 0 to 1, with D=0 indicating a package that is coincident with the main sequence and D=1 indicating a package that is as far from the main sequence as possible.
Cycles	Packages participating in a package dependency cycle are in a deadly embrace with respect to reusability and their release cycle. Package dependency cycles can be easily identified by reviewing the textual reports of dependency cycles. Once these dependency cycles have been identified with JDepend, they can be broken by employing various object-oriented techniques.