com.eurodyn.qlack.fuse.acv.service

Class CompareService

java.lang.Object

com.eurodyn.qlack.fuse.acv.service.CompareService

@Service
public class CompareService
extends Object

Provides functionality to compare two objects of the same class.

Author:

European Dynamics SA

Constructor Summary

Constructors

Constructor and Description
CompareService(org.javers.core.Javers javers, VersioningService versioningService)

Method Summary

Modifier and Type	Method and Description
<T> List<ChangeDTO>	compare(T obj1, T obj2) Compares two objects and returns the changes.
List<ChangeDTO>	compareObjectWithLatestVersion(Object object) Compares an object with the latest version and returns the changes.
List<ChangeDTO>	compareObjectWithVersion(Object object, long version) Compares an object with a specific version and returns the changes.
List<ChangeDTO>	compareVersions(Object object, long version1, long version2) Compares two object versions and returns the changes.
protected ChangeDTO	convertToChangeDTO(org.javers.core.diff.changetype.ValueChange change)
<T> boolean	hasChanges(T obj1, T obj2) Compares two objects and returns if they have changes or not.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

CompareService

@Autowired
public CompareService(org.javers.core.Javers javers,
                                 VersioningService versioningService)

Method Detail

hasChanges

public <T> boolean hasChanges(@NonNull
                              T obj1,
                              @NonNull
                              T obj2)

Compares two objects and returns if they have changes or not.

Type Parameters:

T - the type of the objects to compare, so to ensure that the objects are of the same class

Parameters:

obj1 - the first object to compare

obj2 - the second object to compare

Returns:

true if the objects they have changes, else false

compare

public <T> List<ChangeDTO> compare(@NonNull
                                   T obj1,
                                   @NonNull
                                   T obj2)

Compares two objects and returns the changes.

Type Parameters:

T - the type of the objects to compare, so to ensure that the objects are of the same class

Parameters:

obj1 - the first object to compare

obj2 - the second object to compare

Returns:

a list with the changes between the two comparing objects

compareVersions

public List<ChangeDTO> compareVersions(Object object,
                                       long version1,
                                       long version2)

Compares two object versions and returns the changes.

Throws a QDoesNotExistException when one of the requested versions doesn't exist.

Parameters:

object - the object to find the requested versions.

version1 - number of the first version to compare with

version2 - number of the second version to compare with

Returns:

a list with the changes between the two comparing objects

compareObjectWithVersion

public List<ChangeDTO> compareObjectWithVersion(Object object,
                                                long version)

Compares an object with a specific version and returns the changes.

Throws a QDoesNotExistException when the requested version doesn't exist.

Parameters:

object - the object to compare with the latest version.

version - number of the version to compare with

Returns:

a list with the changes between the two comparing objects

compareObjectWithLatestVersion

public List<ChangeDTO> compareObjectWithLatestVersion(Object object)

Compares an object with the latest version and returns the changes.

Throws a QDoesNotExistException when no committed version exists.

Parameters:

object - the object to compare with the latest version.

Returns:

a list with the changes between the two comparing objects

convertToChangeDTO

protected ChangeDTO convertToChangeDTO(org.javers.core.diff.changetype.ValueChange change)