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NeXtMidas Training
Common Midas Concepts
Blue Files
Qualifiers
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- File Qualifiers:
- File qualifiers are used to override the default interpretation
of a Blue File. Usually they are used to override one of the values
in the Blue File header.
- File qualifiers are specified by appending them to the end of a file
name. For example:
X-Midas: myfile.prm(<TAG>=<VAL>)
NeXtMidas: myfile.prm{<TAG>=<VAL>}
In the above example <TAG> is the name of the
header value to override and <VAL> is the value
to use. (Note that X-Midas uses parentheses while NeXtMidas
uses braces.)
- It is important to note that the syntax for qualifiers
and the applicable
TAG= names vary between the frameworks.
- NeXtMidas choose a different syntax to allow qualifiers to be
specified using a table (at the time X-Midas had no support for
tables).
- Both X-Midas and NeXtMidas give more details about the available
TAG= names in the HEADERMOD explain file.
- Multiple file qualifiers can be used at once. For example:
X-Midas: myfile.prm(<TAG1>=<VAL1>)(<TAG2>=<VAL2>)
NeXtMidas: myfile.prm{<TAG1>=<VAL1>,<TAG2>=<VAL2>}
or myfile.prm{<TAG1>=<VAL1>}{<TAG2>=<VAL2>}
- Both X-Midas and NeXtMidas allow the use of qualifiers that
alter the interpretation/presentation of a file without directly
overriding a value in the file header (a common example is
AUX= which specifies the read/write AUX for the file).
- Because of this, it is not uncommon to see qualifiers used with
other types of file (especially in NeXtMidas).
- (See Qualifiers
in the User's Guide for details.)
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