org.faktorips.runtime

Class DeltaComputationOptionsByPosition

java.lang.Object

org.faktorips.runtime.DeltaComputationOptionsByPosition

All Implemented Interfaces:

IDeltaComputationOptions

public class DeltaComputationOptionsByPosition
extends Object
implements IDeltaComputationOptions

Delta computation options that create child deltas per position and don't ignore any property. TODO the following reference does not exist

Author:

Jan Ortmann

See Also:

IDeltaComputationOptions.ComputationMethod.BY_POSITION

Nested Class Summary

Nested classes/interfaces inherited from interface org.faktorips.runtime.IDeltaComputationOptions

IDeltaComputationOptions.ComputationMethod

Constructor Summary

Constructors

Constructor and Description
DeltaComputationOptionsByPosition()

Method Summary

Methods

Modifier and Type	Method and Description
IDeltaComputationOptions.ComputationMethod	getMethod(String association) Returns if the delta computation computes child deltas per position/index or per object.
boolean	ignore(Class<?> clazz, String property) Returns false.
boolean	isSame(IModelObject object1, IModelObject object2) Returns true if the specified object references are identical.

Methods inherited from class java.lang.Object

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

Constructor Detail

DeltaComputationOptionsByPosition

public DeltaComputationOptionsByPosition()

Method Detail

getMethod

public IDeltaComputationOptions.ComputationMethod getMethod(String association)

Description copied from interface: IDeltaComputationOptions

Returns if the delta computation computes child deltas per position/index or per object.

1. Example for a 1-many association:
A contract version A has three coverages c0, c1, and c2. A second version B of the same contract has a new coverage cNew inserted between coverage c0 and c1. The coverages c0, c1,and c2 are unchanged except for their position.

If this method returns IDeltaComputationOptions.ComputationMethod.BY_POSITION, the following deltas are computed. position 0: version A:c0, version B:c0 => empty delta position 1: version A:c1, version B:cNew => changed position 2: version A:c2, version B:c1 => changed position 3: version A:none, version B:c2 => added

If this method returns IDeltaComputationOptions.ComputationMethod.BY_OBJECT, the following deltas are computed. c0: version A:position 0, version B:position 0 => empty delta c1: version A:position 1, version B:position 2 => moved c2: version A:position 2, version B:position 3 => moved cNew: version A:position none, version B:position 1 => added

2. Example for a 1-many association:
Same scenario as above, but now c1 is removed and no coverage is added.

If this method returns IDeltaComputationOptions.ComputationMethod.BY_POSITION, the following deltas are computed. position 0: version A:c0, version B:c0 => empty delta position 1: version A:c1, version B:v2 => changed position 2: version A:c2, version B:none => removed

If this method returns IDeltaComputationOptions.ComputationMethod.BY_OBJECT, the following deltas are computed. c0: version A:position 0, version B:position 0 => empty delta c1: version A:position 1, version B:position none => removed c2: version A:position 2, version B:position 1 => moved

Example for a 1-1 association:
A contract version A has the insured person p0. A second contract version B has the insured person p1.

If this method returns IDeltaComputationOptions.ComputationMethod.BY_POSITION, the following delta is computed. position 0: changed

If this method returns IDeltaComputationOptions.ComputationMethod.BY_OBJECT, the following deltas are computed. p1: removed p2: added

Specified by:

getMethod in interface IDeltaComputationOptions

isSame

public boolean isSame(IModelObject object1,
             IModelObject object2)

Returns true if the specified object references are identical.

Specified by:

isSame in interface IDeltaComputationOptions

ignore

public boolean ignore(Class<?> clazz,
             String property)

Returns false.

Specified by:

ignore in interface IDeltaComputationOptions

Parameters:

clazz - The class the property belongs to.

property - The name of the property.