Anotation “NonNull” in UML?
Android Studio is showing the annotation
`@NonNull`
, how can we represent this in UML?
Similarly, how is there a standard to display annotations?
java
android-studio uml asked Jan 18 at 13:42
EvOlaNdLuPiZEvOlaNdLuPiZ
11410
add a comment |
Android Studio is showing the annotation
`@NonNull`
, how can we represent this in UML?
Similarly, how is there a standard to display annotations?
java
android-studio uml asked Jan 18 at 13:42
EvOlaNdLuPiZEvOlaNdLuPiZ
11410
add a comment |
Android Studio is showing the annotation
`@NonNull`
, how can we represent this in UML?
Similarly, how is there a standard to display annotations?
java
android-studio uml asked Jan 18 at 13:42
EvOlaNdLuPiZEvOlaNdLuPiZ
11410
Android Studio is showing the annotation
`@NonNull`
, how can we represent this in UML?
Similarly, how is there a standard to display annotations?
java
android-studio uml java
android-studio uml asked Jan 18 at 13:42
EvOlaNdLuPiZEvOlaNdLuPiZ
11410
asked Jan 18 at 13:42
EvOlaNdLuPiZEvOlaNdLuPiZ
11410
asked Jan 18 at 13:42
EvOlaNdLuPiZEvOlaNdLuPiZ
11410
asked Jan 18 at 13:42
EvOlaNdLuPiZEvOlaNdLuPiZ
11410
asked Jan 18 at 13:42
EvOlaNdLuPiZEvOlaNdLuPiZ
11410
11410
add a comment |
add a comment |
2 Answers
2
active
oldest
votes
If you set the multiplicity of your attribute to [1] it becomes not nullable.
- someAttribute : int [1]
And since 1 is the default multiplicity for attributes you can also leave the multiplicity undefined.
- someAttribute : int
In order to allow for null you have to explicitly set the lowerbound to 0
- someAttribute : int [0..1]
See UML 2.5 specification chapter 9.5.4 (Property.Notation)
<multiplicity-range>is the multiplicity range of the Property. If this term is omitted, it implies a multiplicity
of 1 (exactly one). (See MultiplicityElement – sub clause 7.5.)
answered Jan 18 at 16:32
Geert BellekensGeert Bellekens
7,8121035
can you please cite the reference so I can search for more information, the answer will also lead my search on other annotations for platforms like Android Studio, Netbeans, thank you.
– EvOlaNdLuPiZ
Jan 18 at 16:37
1
I've seen code generators that will not emit an attribute for unspecified multiplicity, and [CanBeNull] on 0..1 and [NotNull] on 1, so depending on your conventions and workflow leaving it undefined may not be equivalent.
– Pete Kirkham
Jan 18 at 17:03
@PeteKirkham well then those code generators are clearly ignoring the UML standard with regards to the default value for the the multiplicity of a property.
– Geert Bellekens
Jan 18 at 17:58
add a comment |
A NotNull attribute indicates that the property or association end must be present.
This is equivalent to having a multiplicity of 1 rather than 0..1 or an unspecified multiplicity.
answered Jan 18 at 15:59
Pete KirkhamPete Kirkham
43.2k379151
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
If you set the multiplicity of your attribute to [1] it becomes not nullable.
- someAttribute : int [1]
And since 1 is the default multiplicity for attributes you can also leave the multiplicity undefined.
- someAttribute : int
In order to allow for null you have to explicitly set the lowerbound to 0
- someAttribute : int [0..1]
See UML 2.5 specification chapter 9.5.4 (Property.Notation)
<multiplicity-range>is the multiplicity range of the Property. If this term is omitted, it implies a multiplicity
of 1 (exactly one). (See MultiplicityElement – sub clause 7.5.)
answered Jan 18 at 16:32
Geert BellekensGeert Bellekens
7,8121035
can you please cite the reference so I can search for more information, the answer will also lead my search on other annotations for platforms like Android Studio, Netbeans, thank you.
– EvOlaNdLuPiZ
Jan 18 at 16:37
1
I've seen code generators that will not emit an attribute for unspecified multiplicity, and [CanBeNull] on 0..1 and [NotNull] on 1, so depending on your conventions and workflow leaving it undefined may not be equivalent.
– Pete Kirkham
Jan 18 at 17:03
@PeteKirkham well then those code generators are clearly ignoring the UML standard with regards to the default value for the the multiplicity of a property.
– Geert Bellekens
Jan 18 at 17:58
add a comment |
If you set the multiplicity of your attribute to [1] it becomes not nullable.
- someAttribute : int [1]
And since 1 is the default multiplicity for attributes you can also leave the multiplicity undefined.
- someAttribute : int
In order to allow for null you have to explicitly set the lowerbound to 0
- someAttribute : int [0..1]
See UML 2.5 specification chapter 9.5.4 (Property.Notation)
<multiplicity-range>is the multiplicity range of the Property. If this term is omitted, it implies a multiplicity
of 1 (exactly one). (See MultiplicityElement – sub clause 7.5.)
answered Jan 18 at 16:32
Geert BellekensGeert Bellekens
7,8121035
can you please cite the reference so I can search for more information, the answer will also lead my search on other annotations for platforms like Android Studio, Netbeans, thank you.
– EvOlaNdLuPiZ
Jan 18 at 16:37
1
I've seen code generators that will not emit an attribute for unspecified multiplicity, and [CanBeNull] on 0..1 and [NotNull] on 1, so depending on your conventions and workflow leaving it undefined may not be equivalent.
– Pete Kirkham
Jan 18 at 17:03
@PeteKirkham well then those code generators are clearly ignoring the UML standard with regards to the default value for the the multiplicity of a property.
– Geert Bellekens
Jan 18 at 17:58
add a comment |
If you set the multiplicity of your attribute to [1] it becomes not nullable.
- someAttribute : int [1]
And since 1 is the default multiplicity for attributes you can also leave the multiplicity undefined.
- someAttribute : int
In order to allow for null you have to explicitly set the lowerbound to 0
- someAttribute : int [0..1]
See UML 2.5 specification chapter 9.5.4 (Property.Notation)
<multiplicity-range>is the multiplicity range of the Property. If this term is omitted, it implies a multiplicity
of 1 (exactly one). (See MultiplicityElement – sub clause 7.5.)
answered Jan 18 at 16:32
Geert BellekensGeert Bellekens
7,8121035
If you set the multiplicity of your attribute to [1] it becomes not nullable.
- someAttribute : int [1]
And since 1 is the default multiplicity for attributes you can also leave the multiplicity undefined.
- someAttribute : int
In order to allow for null you have to explicitly set the lowerbound to 0
- someAttribute : int [0..1]
See UML 2.5 specification chapter 9.5.4 (Property.Notation)
<multiplicity-range>is the multiplicity range of the Property. If this term is omitted, it implies a multiplicity
of 1 (exactly one). (See MultiplicityElement – sub clause 7.5.)
answered Jan 18 at 16:32
Geert BellekensGeert Bellekens
7,8121035
edited Jan 18 at 17:54
answered Jan 18 at 16:32
Geert BellekensGeert Bellekens
7,8121035
answered Jan 18 at 16:32
Geert BellekensGeert Bellekens
7,8121035
answered Jan 18 at 16:32
Geert BellekensGeert Bellekens
7,8121035
7,8121035
can you please cite the reference so I can search for more information, the answer will also lead my search on other annotations for platforms like Android Studio, Netbeans, thank you.
– EvOlaNdLuPiZ
Jan 18 at 16:37
1
I've seen code generators that will not emit an attribute for unspecified multiplicity, and [CanBeNull] on 0..1 and [NotNull] on 1, so depending on your conventions and workflow leaving it undefined may not be equivalent.
– Pete Kirkham
Jan 18 at 17:03
@PeteKirkham well then those code generators are clearly ignoring the UML standard with regards to the default value for the the multiplicity of a property.
– Geert Bellekens
Jan 18 at 17:58
add a comment |
can you please cite the reference so I can search for more information, the answer will also lead my search on other annotations for platforms like Android Studio, Netbeans, thank you.
– EvOlaNdLuPiZ
Jan 18 at 16:37
1
I've seen code generators that will not emit an attribute for unspecified multiplicity, and [CanBeNull] on 0..1 and [NotNull] on 1, so depending on your conventions and workflow leaving it undefined may not be equivalent.
– Pete Kirkham
Jan 18 at 17:03
@PeteKirkham well then those code generators are clearly ignoring the UML standard with regards to the default value for the the multiplicity of a property.
– Geert Bellekens
Jan 18 at 17:58
can you please cite the reference so I can search for more information, the answer will also lead my search on other annotations for platforms like Android Studio, Netbeans, thank you.
– EvOlaNdLuPiZ
Jan 18 at 16:37
can you please cite the reference so I can search for more information, the answer will also lead my search on other annotations for platforms like Android Studio, Netbeans, thank you.
– EvOlaNdLuPiZ
Jan 18 at 16:37
1
1
I've seen code generators that will not emit an attribute for unspecified multiplicity, and [CanBeNull] on 0..1 and [NotNull] on 1, so depending on your conventions and workflow leaving it undefined may not be equivalent.
– Pete Kirkham
Jan 18 at 17:03
I've seen code generators that will not emit an attribute for unspecified multiplicity, and [CanBeNull] on 0..1 and [NotNull] on 1, so depending on your conventions and workflow leaving it undefined may not be equivalent.
– Pete Kirkham
Jan 18 at 17:03
@PeteKirkham well then those code generators are clearly ignoring the UML standard with regards to the default value for the the multiplicity of a property.
– Geert Bellekens
Jan 18 at 17:58
@PeteKirkham well then those code generators are clearly ignoring the UML standard with regards to the default value for the the multiplicity of a property.
– Geert Bellekens
Jan 18 at 17:58
add a comment |
A NotNull attribute indicates that the property or association end must be present.
This is equivalent to having a multiplicity of 1 rather than 0..1 or an unspecified multiplicity.
answered Jan 18 at 15:59
Pete KirkhamPete Kirkham
43.2k379151
add a comment |
A NotNull attribute indicates that the property or association end must be present.
This is equivalent to having a multiplicity of 1 rather than 0..1 or an unspecified multiplicity.
answered Jan 18 at 15:59
Pete KirkhamPete Kirkham
43.2k379151
add a comment |
A NotNull attribute indicates that the property or association end must be present.
This is equivalent to having a multiplicity of 1 rather than 0..1 or an unspecified multiplicity.
answered Jan 18 at 15:59
Pete KirkhamPete Kirkham
43.2k379151
A NotNull attribute indicates that the property or association end must be present.
This is equivalent to having a multiplicity of 1 rather than 0..1 or an unspecified multiplicity.
answered Jan 18 at 15:59
Pete KirkhamPete Kirkham
43.2k379151
edited Jan 18 at 16:59
answered Jan 18 at 15:59
Pete KirkhamPete Kirkham
43.2k379151
answered Jan 18 at 15:59
Pete KirkhamPete Kirkham
43.2k379151
answered Jan 18 at 15:59
Pete KirkhamPete Kirkham
43.2k379151
43.2k379151
add a comment |
add a comment |
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