Holistic facts store
Facts store and server, loosely based on Datomic.
$ cd src
$ make
$ ./server —db master —port 5555
retrieve active facts
$ echo “f-1” | nc -C localhost 5555
{"type":"response","tx":1,"facts":[[1,1,":db/ident",0,false],[1,2,5,0,false],[1,3,7,0,false],[1,4,10,0,false],[2,1,":db/type",0,false],[2,2,6,0,false],[2,3,7,0,false],[2,4,9,0,false],[3,1,":db/cardinality",0,false],[3,2,6,0,false],[3,3,7,0,false],[3,4,9,0,false],[4,1,":db/unique",0,false],[4,2,6,0,false],[4,3,7,0,false],[4,4,9,0,false],[5,1,":db.type/value",0,false],[6,1,":db.type/ref",0,false],[7,1,":db.cardinality/one",0,false],[8,1,":db.cardinality/many",0,false],[9,1,":db.unique/no",0,false],[10,1,":db.unique/yes",0,false]]}
transact new facts
$ echo “t[[-1,777,777,0]]” | nc -C localhost 5555
{"type":"response","tx":1,"facts":[[11,777,777,1,false]],"new_ids":[[-1,11]]}
transact new facts
$ echo “t[[888,888,888,0]]” | nc -C localhost 5555
{"type":"response","tx":2,"facts":[[888,888,888,2,false]],"new_ids":[]}
retract previous fact
$ echo “t[[888,888,888,1]]” | nc -C localhost 5555
{"type":"response","tx":3,"facts":[[888,888,888,3,true]],"new_ids":[]}
retrieve facts at t = 0
$ echo “f0” | nc -C localhost 5555
{"type":"response","tx":0,"facts":[[1,1,":db/ident",0,false],[1,2,5,0,false],[1,3,7,0,false],[1,4,10,0,false],[2,1,":db/type",0,false],[2,2,6,0,false],[2,3,7,0,false],[2,4,9,0,false],[3,1,":db/cardinality",0,false],[3,2,6,0,false],[3,3,7,0,false],[3,4,9,0,false],[4,1,":db/unique",0,false],[4,2,6,0,false],[4,3,7,0,false],[4,4,9,0,false],[5,1,":db.type/value",0,false],[6,1,":db.type/ref",0,false],[7,1,":db.cardinality/one",0,false],[8,1,":db.cardinality/many",0,false],[9,1,":db.unique/no",0,false],[10,1,":db.unique/yes",0,false]]}
retrieve facts at t = 1
$ echo “f1” | nc -C localhost 5555
{"type":"response","tx":1,"facts":[[1,1,":db/ident",0,false],[1,2,5,0,false],[1,3,7,0,false],[1,4,10,0,false],[2,1,":db/type",0,false],[2,2,6,0,false],[2,3,7,0,false],[2,4,9,0,false],[3,1,":db/cardinality",0,false],[3,2,6,0,false],[3,3,7,0,false],[3,4,9,0,false],[4,1,":db/unique",0,false],[4,2,6,0,false],[4,3,7,0,false],[4,4,9,0,false],[5,1,":db.type/value",0,false],[6,1,":db.type/ref",0,false],[7,1,":db.cardinality/one",0,false],[8,1,":db.cardinality/many",0,false],[9,1,":db.unique/no",0,false],[10,1,":db.unique/yes",0,false],[11,777,777,1,false]]}
retrieve facts at t = 2
$ echo “f2” | nc -C localhost 5555
{"type":"response","tx":2,"facts":[[1,1,":db/ident",0,false],[1,2,5,0,false],[1,3,7,0,false],[1,4,10,0,false],[2,1,":db/type",0,false],[2,2,6,0,false],[2,3,7,0,false],[2,4,9,0,false],[3,1,":db/cardinality",0,false],[3,2,6,0,false],[3,3,7,0,false],[3,4,9,0,false],[4,1,":db/unique",0,false],[4,2,6,0,false],[4,3,7,0,false],[4,4,9,0,false],[5,1,":db.type/value",0,false],[6,1,":db.type/ref",0,false],[7,1,":db.cardinality/one",0,false],[8,1,":db.cardinality/many",0,false],[9,1,":db.unique/no",0,false],[10,1,":db.unique/yes",0,false],[11,777,777,1,false],[888,888,888,2,false]]}
retrieve facts at t = 3
$ echo “f3” | nc -C localhost 5555
{"type":"response","tx":3,"facts":[[1,1,":db/ident",0,false],[1,2,5,0,false],[1,3,7,0,false],[1,4,10,0,false],[2,1,":db/type",0,false],[2,2,6,0,false],[2,3,7,0,false],[2,4,9,0,false],[3,1,":db/cardinality",0,false],[3,2,6,0,false],[3,3,7,0,false],[3,4,9,0,false],[4,1,":db/unique",0,false],[4,2,6,0,false],[4,3,7,0,false],[4,4,9,0,false],[5,1,":db.type/value",0,false],[6,1,":db.type/ref",0,false],[7,1,":db.cardinality/one",0,false],[8,1,":db.cardinality/many",0,false],[9,1,":db.unique/no",0,false],[10,1,":db.unique/yes",0,false],[11,777,777,1,false]]}