jclient is a thin wrapper for testing the jsondb database.

You must specify fairly accurately formated JSON objects to get the
database to respond. 

Here's a sample session:

jclient> create {"name":"Fred", "type":"CONTACT"}
Received message: {"error" : null,"id" : 0,"result" : {"id" : "{b2c9c712-1ba3-41fd-a454-51c120ce1c8c}"}}

jclient> notify {"query":"[?type='CONTACT']","actions":["create"]}
Received message: {"error" : null,"id" : 1,"result" : {"active" : true}}

jclient> create {"name":"Wilma","type":"CONTACT"}
Received message: {"error" : null,"id" : 2,"result" : {"id" : "{35275206-e875-4c5d-a7b9-6cfd1cac67c2}"}}
Received message: {"id" : 1,"notify" : {"action" : "create","object" : {"id" : "{35275206-e875-4c5d-a7b9-6cfd1cac67c2}","name" : "Wilma","type" : "CONTACT"}}}

jclient> create {"name":"Quarry", "type":"LOCATION"}
Received message: {"error" : null,"id" : 3,"result" : {"id" : "{0eba3c55-48ac-433a-833c-ca1a8c5c395d}"}}

jclient> find {"query":".*"}
Received message: {"error" : null,"id" : 4,"result" : {"data" : [{"id" : "{b2c9c712-1ba3-41fd-a454-51c120ce1c8c}","name" : "Fred","type" : "CONTACT"},{"id" : "{35275206-e875-4c5d-a7b9-6cfd1cac67c2}","name" : "Wilma","type" : "CONTACT"},{"id" : "{0eba3c55-48ac-433a-833c-ca1a8c5c395d}","name" : "Quarry","type" : "LOCATION"}],"length" : 3,"offset" : 0}}

jclient> find {"query":"[?type~'location']"}
Received message: {"error" : null,"id" : 5,"result" : {"data" : [{"id" : "{0eba3c55-48ac-433a-833c-ca1a8c5c395d}","name" : "Quarry","type" : "LOCATION"}],"length" : 1,"offset" : 0}}

jclient> update {"name":"Fred Flintstone", "type":"CONTACT", "id":"{b2c9c712-1ba3-41fd-a454-51c120ce1c8c}"}
Received message: {"error" : null,"id" : 9,"result" : null}

jclient> find {"query":"[?type='CONTACT']"}
Received message: {"error" : null,"id" : 10,"result" : {"data" : [{"id" : "{b2c9c712-1ba3-41fd-a454-51c120ce1c8c}","name" : "Fred Flintstone","type" : "CONTACT"},{"id" : "{35275206-e875-4c5d-a7b9-6cfd1cac67c2}","name" : "Wilma","type" : "CONTACT"}],"length" : 2,"offset" : 0}}

jclient> delete {"id":"{35275206-e875-4c5d-a7b9-6cfd1cac67c2}"}
Received message: {"error" : null,"id" : 11,"result" : null}

jclient> find {"query":".*"}
Received message: {"error" : null,"id" : 13,"result" : {"data" : [{"id" : "{b2c9c712-1ba3-41fd-a454-51c120ce1c8c}","name" : "Fred Flintstone","type" : "CONTACT"},{"id" : "{0eba3c55-48ac-433a-833c-ca1a8c5c395d}","name" : "Quarry","type" : "LOCATION"}],"length" : 2,"offset" : 0}}