MetaAttribute Characteristics
MetaAttribute Type
|
Ab
|
MetaAttribute
Type
|
Description
|
|---|---|---|
|
X
|
String
|
Alphanumeric or numeric if not used to compute data
with a defined MetaAttribute Length value (1-1024)
|
|
D
|
DateTime
|
Date
(available until year 2038)
Format:
"YYYY/MM/DD HH:MM:SS"
In windows where dates can be entered, the format used is the one defined in the Windows configuration.
|
|
W
|
DateTime64
|
Date
Format:
"YYYY/MM/DD HH:MM:SS"
|
|
U
|
AbsoluteDateTime64
|
Date, which does not include the time
Format:
"YYYY/MM/DD"
|
|
A
|
VarChar
|
ASCII text
(for large text like comments)
|
|
B
|
VarBinary
|
Binary text (reserved)
|
|
1
|
Boolean
|
Boolean (0 or 1)
|
|
S
|
Short
|
Integer (0-65535)
|
|
L
|
Long
|
Integer (0 - 4294967295)
|
|
Q
|
Binary
|
Binary (reserved)
with a defined MetaAttribute Length
|
|
H
|
Double
|
Integer (0 - 18446744073709551616)
|
|
F
|
Float
|
Floating number
|
|
C
|
Currency
|
|
MetaAttribute Format
MetaAttribute Format enables indication that external values are stored in a table (value T).
|
Ab
|
MetaAttribute
Format
|
Description
|
|---|---|---|
|
S
|
Standard
|
for a string (default value)
|
|
F
|
Enumeration
|
or string type with predefined list of values
|
|
T
|
Enumeration(opened)
|
for string type with list of values open to user input
|
|
D
|
Duration
|
for a date
|
|
P
|
Percent
|
for a percentage
|
|
E
|
Double
|
for a number
|
|
O
|
Object
|
for an object
|
|
Z
|
Signed Number
|
for a signed number
|
|
C
|
Currency
|
for a currency
|
|
B
|
RGBcolor
|
for a color
|
|
8
|
UTF-8
|
for a unicode string
|
MetaText Format
By default, each new object type is connected to the "Comment" characteristic.
The MetaText Format specifies the text format:
• CONDITION
• XML
• XML not completed
• CSV
• ANSI
• RTF
• HTML
• JSON
• FIELD
MetaAttribute Definition Rules
When you create or modify a MetaAttribute, you must comply with the following rules:
• Once dispatched a MetaAttribute type cannot be modified
Exception for some MetaAttributes, see Modifying a MetaAttribute Type for details.• The following MetaAttributes must have a defined MetaAtributeLength:
• String ("X")
• Binary ("Q")
• Once dispatched you cannot modified a MetaAttributeLength value with a lower value than the source one.