Both PageHeader
and PageBody
are "wrappers" on underlying
Maps that hold datatypes of various types, keyed by field names (strings). The valid
field names for a service are described in the service meta info file (an xml document).
Null values are not allowed; use empty strings to represent missing values (for null
date, for example).
Note that most system datatypes are represented in these Java objects as simple strings. Note the following: