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Names | Definitions | |
---|---|---|
ACAIC | Ancestor Class-Attribute Import Coupling | |
ACMIC | Ancestors Class-Method Import Coupling | |
AID | Average Inheritance Depth of an entity | |
ANA | Average number of entities from which an entity inherits informations wrt. to the total number of entities in a model | |
CAM | Relatedness among methods of an entity based on the parameter list of its methods | |
CBO | Coupling Between Objects of one entity | |
CBOingoing | Coupling Between Objects of one entity (in-going coupling only, towards the entity) | |
CBOoutgoing | Coupling Between Objects of one entity (out-going coupling only, from the entity) | |
CIS | Number of public methods in a class | |
CLD | Class to Leaf Depth of an entity | |
cohesionAttributes | Percentage of fields (declared and inherited) used by the declared methods of one entity wrt. all its fields | |
connectivity | Number of couples of methods that use each other | |
CP | Number of packages that depend on the package containing the entity | |
DAM | Ratio of the number of private (and protected) fields wrt. the total number of fields declared in an entity | |
DCAEC | Descendants Class-Attribute Export Coupling of one entity | |
DCCdesign | Number of classes that a class is directly related to (by attribute and parameter declarations) | |
DCCimplementation | Number of classes that a class is directly related to (by attribute declarations and message passing) | |
DCMEC | Descendants Class-Method Export Coupling of one entity | |
DIT | Depth of Inheritance Tree of an entity | |
DSC | Number of top-level entities in a model | |
EIC | Number of inheritance relationships in which super-entities are in external packages | |
EIP | Number of inheritance relationships where the super-entity is in the package containing the entity and the sub-entites is in another package | |
FanOut | Number of methods and fields used by one entity | |
ICHClass | Complexity of an entity as the sum of the complexities of its declared and inherited methods | |
IR | Number of calls from the methods of an entity to the methods and fields declared in its super-entities | |
LCOM1 | Lack of COhesion in Methods of an entity | |
LCOM2 | Lack of COhesion in Methods of an entity | |
LCOM5 | Lack of COhesion in Methods of an entity | |
LOC | Sum of the numbers of lines of code in the methods of an entity | |
McCabe | Sum of the cyclomatic complexities of the operations of an entity | |
MFA | Ratio of the number of methods inherited by an entity wrt. the number of methods accessible by member methods of the entity | |
MLOCsum | Sum of the numbers of lines of code in the methods of an entity. Same as LOC | |
MOA | Number of data declarations whose types are user-defined entities | |
NAD | Number of Attributes Declared by an entity | |
NADextended | Number of Attributes Declared by an entity and in its member entities | |
NCM | Number of Changed Methods of an entity wrt. its hierarchy | |
NCP | Number of Classes Package containing an entity, i.e., the “depth” of the package containment | |
NMA | Number of Methods Added by an entity wrt. its hierarchy | |
NMD | Number of Methods Declared by an entity | |
NMDextended | Number of Methods Declared by an entity and its member entities | |
NMI | Number of Methods Inherited by an entity. Constructors or not considered as method, they are not counted in the result of the metric | |
NMO | Number of Methods Overridden by an entity | |
NOA | Number Of Ancestors of an entity | |
NOC | Number Of Children of an entity | |
NOD | Number of descendents of an entity | |
NOF | Number Of Fields declared by an entity | |
NOH | Number Of Hierarchies in a model | |
NOM | Number Of Methods declared by an entity | |
NOP | Number Of Parents of an entity | |
NOParam | Number of parameters of the methods of an entity | |
NOPM | Number Of Polymorphic Methods in an entity wrt. its hierarchy | |
NOTC | Number of invocations of JUnit assert methods that occur in the code of a test case | |
NOTI | Number of transitive invocation among methods of a class. See the Law of Demeter for a definition | |
NPrM | Number protected members of an entity | |
oneWayCoupling | Coupling Between Objects of one entity (out-going coupling only, from the entity). Same as CBOoutgoing | |
PIIR | Number of inheritance relationships existing between entities in the package containing an entity | |
PP | Number of provider packages of the package containing an entity | |
REIP | EIP divided by the sum of PIIR and EIP | |
RFC | Response for class: number of methods of an entity and of methods of other entities that are invoked by the methods of the entity | |
RFCextended | Response for class: number of methods of an entity and of methods of other entities that are invoked by the methods of the entity plus number of methods declared by that entity | |
RFP | Number of references from entities belonging to other packages to entities belonging to the package containing an entity | |
RPII | PIIR divided by the sum of PIIR and EIP | |
RRFP | RFP divided by the sum of RFP and the number of internal class references | |
RRTP | RTP divided by the sum of RTP and the number of internal class references | |
RTP | Number of references from entities in the package containing an entity to entities in other packages | |
SIX | Specialisation IndeX of an entity | |
TestCaseLOC | Number of lines of code of all the methods of a test case | |
TLOC | Number of lines of code of all the methods of an entity. Same as LOC | |
VGSum | Sum of the cyclomatic complexities of the operations of an entity. Same as McCabe | |
WMC1 | Weight of an entity considering the complexity of each of its method as being 1. (Default constructors are considered even if not explicitely declared) | |
WMCinvocations | Weight of an entity considering the complexity of each of its method as being the numbers of invocations that they perform. (Default constructors are considered even if not explicitely declared). | |
WMCmccabe | Weight of an entity considering the complexity of each of its method as being their McCabe cyclomatic complexity. (Default constructors are considered even if not explicitely declared). |
Computing POM metrics using PADL is made easy by the helper class pom.helper.MetricsGenerator
. After having installed CPL, PADL, and POM, just go into the POM Tests
project and have a look at this class. It provides a main method with snippets of code to call one of the three methods:
computeMetricsFromDirectory
computeMetricsFromEclipse
computeMetricsFromJARs
which can be used to compute automatically metrics from various input sources. Also have a look at the constant array listing the metrics that must be computed or avoided: METRICS_TO_AVOID
and METRICS_TO_COMPUTE
.