Difference between revisions of "LOGCON"
m (New page: Definition: A process or action, such as addition, substitution, transposition, or differentiation, logical conjunction or disjunction, performed in a specified sequence and in acco...) |
|||
| (27 intermediate revisions by 2 users not shown) | |||
| Line 1: | Line 1: | ||
| + | FEATURE OBJECT ATTRIBUTES | ||
| + | Attribute: Logical connectives | ||
| + | Acronym: LOGCON Code: ? | ||
| + | Camel case: logicalConnectives | ||
| + | Attribute type: Enumeration | ||
| + | Definition: | ||
| + | Expresses whether all the constraints described by its co-attributes must be satisfied, or only one such constraint need be satisfied. | ||
| − | |||
| − | Attribute values: | + | Attribute values: |
| − | + | ||
| − | + | 1 logical conjunction | |
| + | |||
| + | 2 logical disjunction | ||
| + | |||
| + | |||
| + | Definitions: | ||
logical conjunction | logical conjunction | ||
all the conditions described by the other attributes of the object, or sub-attributes of the same complex attribute, are true | all the conditions described by the other attributes of the object, or sub-attributes of the same complex attribute, are true | ||
| + | |||
logical disjunction | logical disjunction | ||
| Line 20: | Line 32: | ||
at least one of the conditions described by the other attributes of the object, or sub-attributes of the same complex attributes, is true | at least one of the conditions described by the other attributes of the object, or sub-attributes of the same complex attributes, is true | ||
| − | |||
| − | |||
| − | + | Remark: | |
| + | * This atribute is intended to be used with co-attributes that encode limits on vessel dimensions, type of cargo, and other characteristics. | ||
| + | * The combination of constraints described by logicalConnective and its co-attributes defines a subset of vessels to which information described by a feature or information type instance applies (or does not apply, is required, recommended, etc.). | ||
| + | * The relationship between the vessel subset and the information is indicated by an association - see [[PERMIS|PermissionType]] and [[INCTYP|InclusionType]]). | ||
| + | * The two listed values of logicalConnective are two of the basic operations of Boolean logic. The third basic operation (''not'') is not used. | ||
| + | |||
| + | Example: | ||
| + | <br>applicabilty | ||
| + | <br>logicalConnectives=1 | ||
| + | <br>vesselsMeasurements [vesselsCharacteristics=10/vesselsCharacteristicsValue=50.0/ComparisonOperator=1] | ||
| + | <br>vesselsMeasurements [vesselsCharacteristics=6/vesselsCharacteristicsValue=10.0/ComparisonOperator=1] | ||
implies the limitation applies only when LOA > 50.0 and draught > 10.0 | implies the limitation applies only when LOA > 50.0 and draught > 10.0 | ||
| + | |||
| + | |||
| + | Distinction: | ||
| + | |||
| + | Nil | ||
| + | |||
| + | |||
| + | |||
| + | Justification:<br> | ||
| + | |||
| + | New attribute | ||
| + | |||
| + | |||
| + | Comments: | ||
| + | |||
| + | No comments. | ||
| + | |||
| + | |||
| + | |||
| + | ---- | ||
| + | |||
| + | |||
| + | {| style="background:#ccc99; color:black;" border="1" cellpadding="5" cellspacing="0" align="left" | ||
| + | !David!!Raphael!!Jens | ||
| + | |- style="background:white; color:black" | ||
| + | | Y | ||
| + | |Y | ||
| + | |Y | ||
| + | |} | ||
Latest revision as of 06:09, 23 January 2017
FEATURE OBJECT ATTRIBUTES
Attribute: Logical connectives
Acronym: LOGCON Code: ?
Camel case: logicalConnectives
Attribute type: Enumeration
Definition: Expresses whether all the constraints described by its co-attributes must be satisfied, or only one such constraint need be satisfied.
Attribute values:
1 logical conjunction
2 logical disjunction
Definitions:
logical conjunction
all the conditions described by the other attributes of the object, or sub-attributes of the same complex attribute, are true
logical disjunction
at least one of the conditions described by the other attributes of the object, or sub-attributes of the same complex attributes, is true
Remark:
- This atribute is intended to be used with co-attributes that encode limits on vessel dimensions, type of cargo, and other characteristics.
- The combination of constraints described by logicalConnective and its co-attributes defines a subset of vessels to which information described by a feature or information type instance applies (or does not apply, is required, recommended, etc.).
- The relationship between the vessel subset and the information is indicated by an association - see PermissionType and InclusionType).
- The two listed values of logicalConnective are two of the basic operations of Boolean logic. The third basic operation (not) is not used.
Example:
applicabilty
logicalConnectives=1
vesselsMeasurements [vesselsCharacteristics=10/vesselsCharacteristicsValue=50.0/ComparisonOperator=1]
vesselsMeasurements [vesselsCharacteristics=6/vesselsCharacteristicsValue=10.0/ComparisonOperator=1]
implies the limitation applies only when LOA > 50.0 and draught > 10.0
Distinction:
Nil
Justification:
New attribute
Comments:
No comments.
| David | Raphael | Jens |
|---|---|---|
| Y | Y | Y |