FAME has some predefined attributes (such as creation and update dates) for databases and data objects, and also allows user defined attributes for objects in a database. Currently, this package deals only with data object attributes.
Among the more useful predefined attributes you can access are an objects
creation and update dates, via the fameCreated and fameUpdated
convenience functions. However, you can also use the more general
fameAttribute function to access a string representation of any
attribute, including user-defined ones.
Setting attributes
Before user-defined attributes can be set for a data object, the database itself must know the names and types of the attributes. Each data object can have up to twenty user-defined attributes of each of six data types: boolean, date, namelist, numeric, precision, and string. The names of the user-defined attributes are stored in the database in six namelist scalars named boolean_attribute_names, date_attribute_names, and so on, one for each data type. Functions will be provided shortly to do this.
Once the database knows what attributes are allowed, they can be set
via fameSetAttribute.
fameAttribute reads one attribute of one object in a Fame
database and returns it as a string.
fameSetAttribute sets the value of one attribute of one object
in a Fame database.
getFameCreated and getFameUpdated return an object's
created and updated attributes, respectively, as
POSIXlt dates.
fameAttribute(attribute, fname, db)
fameSetAttribute(attribute, value, fname, db)
fameCreated(fname, db)
fameUpdated(fname, db)string naming the attribute to be returned
name of an object in a FAME database
string giving the relative or full path to the Fame database to read
or write from. If the fameLocalPath() function is defined, it
will be called on this argument to obtain a path.
value to set the attribute to
fameAttribute returns a named string.
fameSetAttribute returns whatever strings FAME wrote to
standard output while setting the attribute.
fameCreated and fameUpdated each return a
POSIXlt object.
# NOT RUN {
fameUpdated("gdp.q", db = "somedb")
# }
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