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- | ====== POM ====== | ||
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- | ===== Metrics definitions ===== | ||
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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 | 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 | | ||
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- | ===== Computing Metrics ===== | ||
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- | 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''. |