Classification
| Name |
PropertyFlag
|
| Short Description |
Characteristics of values that access rights used in the ServiceProviderSignatures Properties
|
| Class |
Simple Data Type
|
| Base Data Type |
SimpleType
|
| Default Value |
READ-ONLY
|
| Provide a Literal |
Yes
|
| SpecifiedBy |
ISO 13209-4
|
| Standard Compliant |
Yes
|
Description
PropertyFlag is an enumeration type describing access rights used in the ServiceProviderSignatures Properties.
The list of allowed enumeration values is defined as follows:
| Value |
Literal |
Description
|
| READ-ONLY |
@PropertyFlag:READ-ONLY |
The property value, defined in PropertySignature, is read only. This is the default access right if the <init> of the PropertyFlag variable is not defined.
|
| WRITE-ONLY |
@PropertyFlag:WRITE-ONLY |
The property value, defined in PropertySignature, is only writable.
|
| READ-WRITE |
@PropertyFlag:READ-WRITE |
The property value, defined in PropertySignature, is readable as well writable.
|
Order Relation
PropertyFlag values may occur as operands of comparisons (cf. Part 2 of ISO 13209, relational operations). For this case, the following order relation will apply:
READ-ONLY < WRITE-ONLY < READ-WRITE
Literal
The syntax for Literals for complex data types will be used, where the member value is one of the values in the list.
@PropertyFlag:READ-ONLY|WRITE-ONLY|READ-WRITE
This optional element sets the hard-coded initialisation value of the identifier at declaration time.
This attribute shall contain one of the values defined in the ComChannelStates enumeration.
|
|
|
|
Important: If the ComChannelState declaration is not explicitly initialized (omitted <init> element), the default value shall be OFFLINE.
|
Core Conversion
The following table shows the rules for conversion to another data type:
| Conversion |
Result |
Sample
|
| ToBoolean |
Undefined (should not be used) |
|
| ToInteger |
Returns the index of the value in the ComChannelStates enumeration (smallest index is 0) |
Integer val = ToInteger(@ComChannelState:COMMUNICATION); // Returns 0
|
| ToFloat |
Undefined (should not be used) |
|
| ToString |
Returns the name of the enumeration value |
String s = ToString(@ComChannelState:OFFLINE); // Returns "OFFLINE"
|
| ToByteField |
Undefined (should not be used) |
|
Sample
DiagComPlus.ComChannelState ComChannelState1 = @ComChannelState:COMMUNICATION;
