The DTN Reference Implementation - Delay Tolerant Networking ...

Persistent Storage Interface (2)
• SerializableObject interface allows a single function
to define marshal / unmarshal for all DB types
int Bundle::Serialize(SerializeAction* a) {
}
a->process(“bundleid”, &bundleid_);
a->process(“source”, &source_);
a->process(“dest”, &dest_);
a->process(“priority”, &priority_);
a->process(“custreq”, &cust_req_);
a->process(“return_rcpt”, &return_rcpt_);
// ...
• Adding a new DB implementation requires
implementing a handful of functions for different
basic types (int, string, etc)
– Berkeley DB implementation packs fields into a byte array
– SQL implementations generate an update command e.g.
update bundles set custreq = true where bundleid = 10
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