is class handles how to streamlize your object data and get it back.
DMT Framework comes with few default implementations defined in
defaultExternalizerConfig.xml, you can define your own implementations
for any class. Your own implementation should extend org.dmdf.dmt.externalizers.ObjectExternalizer.
If you use DMT Framework, you don't need to define any Externalizer for
your own domain model. But if you have some special needs, you can use
it as a facility.
Typical way to use Externalizer is to reduce object transfer size, or
relink the object graph by lookup object from local cache, so the
object transport size will be reduced significantly - see example.
Externalizer can be configed in defaultExternalizerConfig.xml
(comes with the distribution) or put in your schema. The
DMT Framework will search for Externalzier from your current using
dmtschema first, then looking for defaultExternalizerConfig.xml