public class SDOEqualityHelper extends java.lang.Object implements EqualityHelper
Purpose: A helper class for checking deep or shallow equality of DataObjects.
ChangeSummary is not in scope for equality checking.
SDODataObjectINSTANCE| Constructor and Description |
|---|
SDOEqualityHelper()
INTERNAL:
This default constructor must be used in conjunction with the setHelperContext() function.
|
SDOEqualityHelper(HelperContext aContext)
Constructor that takes in a HelperContext instance that contains this equalityHelper.
|
| Modifier and Type | Method and Description |
|---|---|
boolean |
equal(DataObject dataObject1,
DataObject dataObject2)
Two DataObjects are equal(Deep) if they are equalShallow,
all their compared Properties are equal, and all reachable DataObjects in their
graphs excluding containers are equal.
|
boolean |
equalShallow(DataObject dataObject1,
DataObject dataObject2)
Two DataObjects are equalShallow if
they have the same
Type
and all their compared Properties are equal. |
HelperContext |
getHelperContext()
INTERNAL:
Return the helperContext containing this equalityHelper.
|
void |
setHelperContext(HelperContext helperContext)
INTERNAL:
Set the helperContext if this equalityHelper was created using the default constructor.
|
public SDOEqualityHelper()
public SDOEqualityHelper(HelperContext aContext)
aContext - public boolean equalShallow(DataObject dataObject1, DataObject dataObject2)
Two DataObjects are equalShallow if
they have the same Type
and all their compared Properties are equal.
The set of Properties compared are the
instance properties
where property.getType().isDataType() is true
and property.getType() is not ChangeSummaryType.
Two of these Property values are equal if they are both not
set, or set to an equal value
dataObject1.get(property).equals(dataObject2.get(property))
If the type is a sequenced type, the sequence entries must be the same.
For each entry x in the sequence where the property is used in the comparison,
dataObject1.getSequence().getValue(x).equals(
dataObject2.getSequence().getValue(x)) and
dataObject1.getSequence().getProperty(x) ==
dataObject2.getSequence().getProperty(x)
must be true.
equalShallow in interface EqualityHelperdataObject1 - DataObject to be compareddataObject2 - DataObject to be comparedpublic boolean equal(DataObject dataObject1, DataObject dataObject2)
Two DataObjects are equal(Deep) if they are equalShallow,
all their compared Properties are equal, and all reachable DataObjects in their
graphs excluding containers are equal.
The set of Properties compared are the
instance properties
where property.getType().isDataType() is false,
and is not a container property, ie !property.getOpposite().isContainment()
Two of these Property values are equal if they are both not
set, or all the DataObjects
they refer to are equal in the
context of dataObject1 and dataObject2.
Note that properties to a containing DataObject are not compared
which means two DataObject trees can be equal even if their containers are not equal.
If the type is a sequenced type, the sequence entries must be the same.
For each entry x in the sequence where the property is used in the comparison,
equal(dataObject1.getSequence().getValue(x),
dataObject2.getSequence().getValue(x)) and
dataObject1.getSequence().getProperty(x) == dataObject2.getSequence().getProperty(x)
must be true.
A DataObject directly or indirectly referenced by dataObject1 or dataObject2 can only be equal to exactly one DataObject directly or indirectly referenced by dataObject1 or dataObject2, respectively. This ensures that dataObject1 and dataObject2 are equal if the graph formed by all their referenced DataObjects have the same shape.
Returns true if the trees of DataObjects are equal(Deep).equal in interface EqualityHelperdataObject1 - DataObject to be compareddataObject2 - DataObject to be comparedpublic HelperContext getHelperContext()
public void setHelperContext(HelperContext helperContext)
helperContext -