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pom [2014/01/10 05:36]
yann
pom [2017/09/06 01:54]
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-====== POM ====== 
  
- 
-===== Metrics definitions ===== 
- 
-  ^ Names ^ 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 | Maximum mumber of parameters of the methods of an entity | 
-  | 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''​. 
pom.txt ยท Last modified: 2017/09/06 01:54 (external edit)