| Package | TC | CC | AC | Ca | Ce | A | I | D | V |
|---|---|---|---|---|---|---|---|---|---|
| org.apache.commons.transaction.file | 13 | 9 | 4 | 0 | 8 | 31.0% | 100.0% | 31.0% | 1 |
| org.apache.commons.transaction.locking | 12 | 8 | 4 | 2 | 3 | 33.0% | 60.000004% | 7.0% | 1 |
| org.apache.commons.transaction.memory | 13 | 11 | 2 | 0 | 6 | 15.000001% | 100.0% | 15.000001% | 1 |
| org.apache.commons.transaction.util | 7 | 6 | 1 | 3 | 4 | 14.0% | 57.0% | 29.0% | 1 |
| Afferent Couplings | Efferent Couplings | Abstractness | Instability | Distance |
|---|---|---|---|---|
| 0 | 8 | 31.0% | 100.0% | 31.0% |
| Abstract Classes | Concrete Classes | Used by Packages | Uses Packages |
|---|---|---|---|
| org.apache.commons.transaction.file.ResourceIdToPathMapper org.apache.commons.transaction.file.ResourceManager org.apache.commons.transaction.file.ResourceManagerErrorCodes org.apache.commons.transaction.file.TransactionIdToPathMapper | org.apache.commons.transaction.file.FileResourceManager org.apache.commons.transaction.file.FileResourceManager$InputStreamWrapper org.apache.commons.transaction.file.FileResourceManager$TransactionContext org.apache.commons.transaction.file.FileSequence org.apache.commons.transaction.file.NoOpTransactionIdToPathMapper org.apache.commons.transaction.file.ResourceManagerException org.apache.commons.transaction.file.ResourceManagerSystemException org.apache.commons.transaction.file.URLEncodeIdMapper org.apache.commons.transaction.file.VirtualAdminCommandsFileResourceManager | None | java.io java.lang java.net java.util javax.transaction org.apache.commons.codec.binary org.apache.commons.transaction.locking org.apache.commons.transaction.util |
| Afferent Couplings | Efferent Couplings | Abstractness | Instability | Distance |
|---|---|---|---|---|
| 2 | 3 | 33.0% | 60.000004% | 7.0% |
| Abstract Classes | Concrete Classes | Used by Packages | Uses Packages |
|---|---|---|---|
| org.apache.commons.transaction.locking.LockManager org.apache.commons.transaction.locking.LockManager2 org.apache.commons.transaction.locking.MultiLevelLock org.apache.commons.transaction.locking.MultiLevelLock2 | org.apache.commons.transaction.locking.GenericLock org.apache.commons.transaction.locking.GenericLock$LockOwner org.apache.commons.transaction.locking.GenericLockManager org.apache.commons.transaction.locking.LockException org.apache.commons.transaction.locking.ReadWriteLock org.apache.commons.transaction.locking.ReadWriteLockManager org.apache.commons.transaction.locking.ReadWriteUpgradeLock org.apache.commons.transaction.locking.ReadWriteUpgradeLockManager | org.apache.commons.transaction.file org.apache.commons.transaction.memory | java.lang java.util org.apache.commons.transaction.util |
| Afferent Couplings | Efferent Couplings | Abstractness | Instability | Distance |
|---|---|---|---|---|
| 0 | 6 | 15.000001% | 100.0% | 15.000001% |
| Abstract Classes | Concrete Classes | Used by Packages | Uses Packages |
|---|---|---|---|
| org.apache.commons.transaction.memory.MapFactory org.apache.commons.transaction.memory.SetFactory | org.apache.commons.transaction.memory.ConflictException org.apache.commons.transaction.memory.HashMapFactory org.apache.commons.transaction.memory.HashSetFactory org.apache.commons.transaction.memory.LockException org.apache.commons.transaction.memory.OptimisticMapWrapper org.apache.commons.transaction.memory.OptimisticMapWrapper$CopyingTxContext org.apache.commons.transaction.memory.PessimisticMapWrapper org.apache.commons.transaction.memory.PessimisticMapWrapper$LockingTxContext org.apache.commons.transaction.memory.TransactionalMapWrapper org.apache.commons.transaction.memory.TransactionalMapWrapper$HashEntry org.apache.commons.transaction.memory.TransactionalMapWrapper$TxContext | None | java.io java.lang java.util javax.transaction org.apache.commons.transaction.locking org.apache.commons.transaction.util |
| Afferent Couplings | Efferent Couplings | Abstractness | Instability | Distance |
|---|---|---|---|---|
| 3 | 4 | 14.0% | 57.0% | 29.0% |
| Abstract Classes | Concrete Classes | Used by Packages | Uses Packages |
|---|---|---|---|
| org.apache.commons.transaction.util.LoggerFacade | org.apache.commons.transaction.util.CommonsLoggingLogger org.apache.commons.transaction.util.FileHelper org.apache.commons.transaction.util.Log4jLogger org.apache.commons.transaction.util.PrintWriterLogger org.apache.commons.transaction.util.RendezvousBarrier org.apache.commons.transaction.util.TurnBarrier | org.apache.commons.transaction.file org.apache.commons.transaction.locking org.apache.commons.transaction.memory | java.io java.lang org.apache.commons.logging org.apache.log4j |
| 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. |