====== POM ======


===== Metrics definitions =====

  * ACAIC	Ancestor Class-Attribute Import Coupling
  * ACMIC	Ancestors Class-Method Import Coupling
  * AID	Average Inheritance Depth of an entity
  * ANA	Count the average number of classes from which a class inherits informations
  * CAM	Computes the relatedness among methods of the class based upon the parameter list of the methods
  * CBOin	Coupling Between Objects of one entity
  * CBOout	Coupling Between Objects of one entity
  * CIS	Counts the number of public methods in a class
  * CLD	Class to Leaf Depth of an entity.
  * cohesionAttributes	
  * connectivity	
  * CP	The number of packages that depend on the package containing entity
  * DAM	Returns the ratio of the number of private(protected) Attributes to the total number of Attributes declared in a class
  * DCAEC	Returns the DCAEC (Descendants Class-Attribute Export Coupling) of one entity
  * DCC	Returns the number of classes a class is directly related to(by attribute declarations and message passing
  * DCMEC	Returns the DCMEC (Descendants Class-Method Export Coupling) of one entity
  * DIT	Returns the DIT (Depth of inheritance tree) of an entity.
  * DSC	Count of the total number of classes in the design
  * EIC	the number of inheritance relationships in which superclasses are in external packages
  * EIP	the number of inheritance relationships where the superclass is in the package containing entity and the subclass is in another package
  * ICHClass	Compute the complexity of an entity as the sum of the complexities of its declared and inherited methods
  * LCOM1	Returns the LCOM (Lack of COhesion in Methods) of an entity
  * LCOM2	Returns the LCOM (Lack of COhesion in Methods) of an entity
  * MFA	The ratio of the number of methods inherited by a class to the number of methods accessible by member methods of the class
  * MOA	Count the number of data declarations whose types are user defined classes
  * NAD	number of attributes declared
  * NADExtended	Number of attributes declared in a class and in its member classes
  * NCM	Returns the NCM (Number of Changed Methods) of an entity.
  * NCP	the number of classes package containing entity
  * NMA	Returns the NMA (Number of New Methods) of an entity
  * NMD	number of methods declared
  * NMDExtended	Number of methods declared in the class and in its member classes
  * NMI	Returns the NMI (Number of Methods Inherited) of an entity
  * NMO	Returns the NMO (Number of Methods Overridden) of an entity
  * NOA	Returns the NOA (Number Of Ancestors) of an entity
  * NOC	Returns the NOC (Number Of Children) of an entity
  * NOD	Returns the NOD (Number Of Descendents) of an entity
  * NOH	Count The number of class hierarchies in the design
  * NOM	Counts all methods defined in a class
  * NOP	Returns the NOP (Number Of Parents) of an entity
  * NOParam	Compute the average number of parameters of methods
  * NOPM	Count of the Methods that can exhibit polymorphic behavior
  * PIIR	The number of inheritance relationships existing between classes in the package containing entity
  * PP	The number of provider packages of the package containing entity
  * REIP	EIP divided by the sum of PIIR and EIP
  * RFP	the number of class references from classes belonging to other packages to classes belonging to the package containing 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	The number of class references from classes in the package containing entity to classes in other packages
  * SIX	Returns the SIX (Specialisation IndeX) of an entity
  * WMC1	Computes the weight of an entity considering the complexity of a method to be unity
  * McCabe	McCabe Complexity: Number of points of decision + 1
  * CBO	Coupling Between Objects of one entity
  * LCOM5	Returns the LCOM (Lack of COhesion in Methods) of an entity
  * WMC	Computes the weight of an entity by computing the number of method invocations in each method 

===== Computing Metrics =====

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''.