[Developers] mqlwrite & implicit connect directives
Augusto Callejas
acallejas at appliedminds.com
Thu Feb 28 20:09:50 UTC 2008
hi-
from the mqlwrite documentation, there is mention of implicit connect
directives:
====
{
"type":"/user/docs/note",
"name":"G",
"next":{
"create":"unless_exists",
"type":"/user/docs/note",
"name":"D"
}
}
Notice that there is no connect directive here. Since the create directive
is nested in this query, the connection is implicit.
====
does this not apply to id-queries? in my example below, there is a type "s"
that has a property "t" of type "t". i have an instance of "s" and an
instance of "t". running the write operation below seems to verify that
they are not connected:
====
{
"query" : {
"id" : "/guid/9202a8c04000641f80000000077070ba",
"t" : {
"id" : "/guid/9202a8c04000641f800000000771049c",
"type" : "/user/augusto/e/t"
},
"type" : "/user/augusto/e/s"
}
}
====
{
"code" : "/api/status/error",
"messages" : [
{
"code" : "/api/status/error/mql/result",
"info" : {},
"message" : "Can't locate this clause - cannot continue",
"path" : "",
"query" : {
"error_inside" : ".",
"id" : "/guid/9202a8c04000641f80000000077070bac",
"t" : {
"id" : "/guid/9202a8c04000641f800000000771049",
"type" : "/user/augusto/e/t"
},
"type" : "/user/augusto/e/s"
}
}
]
}
====
however, when i add the "connect" directive, it connects them:
====
{
"query" : {
"id" : "/guid/9202a8c04000641f80000000077070ba",
"t" : {
"connect" : "insert",
"id" : "/guid/9202a8c04000641f800000000771049c",
"type" : "/user/augusto/e/t"
},
"type" : "/user/augusto/e/s"
}
}
====
{
"code" : "/api/status/ok",
"result" : {
"id" : "/guid/9202a8c04000641f80000000077070ba",
"t" : {
"connect" : "inserted",
"id" : "/guid/9202a8c04000641f800000000771049c",
"type" : "/user/augusto/e/t"
},
"type" : "/user/augusto/e/s"
}
}
====
so my question is why is connect not implicit in my first write query, yet
it is in the example from the documenation? is it because the the nested
query has a "create" directive?
thanks,
augusto.
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