The classes
ckan_package - CKAN package
ckan_resource - CKAN resource
ckan_related - CKAN related item
Coercion
The functions as.ckan_*() for each CKAN object type coerce something
to a S3 class of that type. For example, you can coerce a package ID as a
character string into an ckan_package object by calling
as.ckan_package(<id>.
Testing for classes
To test whether an object is of a particular ckan_* class, there is a
is._ckan_*() function for all of the classes listed above. You can use
one of those functions to get a logical back, TRUE or FALSE.
Manipulation
These are simple S3 classes, basically an R list with an attached class
so we can know what to do with the object and have flexible inputs and
outputs from functions. You can edit one of these classes yourself
by simply changing values in the list.
