I don't technically need this but it helps a lot on the swift side
of things since I already have code that uses this identifier of a
similar structure
Signed-off-by: William Casarin <jb55@jb55.com>
Instead of running queries off filters directly, we do some simple
heuristics and determine a reasonable query plan for the given filter.
To test this, also add a kind index query plan and add a test for it.
We still need tag, author, and created_at index scans. This is up next!
Signed-off-by: William Casarin <jb55@jb55.com>
Still a lot more work to do, but this is at least a proof of concept for
querying nostrdb using filters.
Signed-off-by: William Casarin <jb55@jb55.com>
This is useful for positioning LMDB cursors at the start of a query. We
will be re-using this in the upcoming query code
Signed-off-by: William Casarin <jb55@jb55.com>
This makes it a bit more flexible, but maybe we can add quoting in the
future that re-enables this. Or maybe a search option
Signed-off-by: William Casarin <jb55@jb55.com>
This adds some initial code for the nostrdb relay subscription monitor.
When new notes are written to the database, they are checked against
active subscriptions. If any of the subscriptions are matched, the note
primary key is written to the inbox queue for that subscription.
We also add an ndb_wait_for_notes() method that simply waits for notes
to be written by the subscription monitor.
Changelog-Added: Added filter subscriptions
Signed-off-by: William Casarin <jb55@jb55.com>
so we don't need heap allocation. we will be calling this a lot in tight
render loops, we don't want to be allocating on each frame.
Signed-off-by: William Casarin <jb55@jb55.com>
In some situations we will need to have owned note blocks. For
example, when we try to fetch note blocks from the database and it's not
there yet. We will need to parse the content on the spot and return an
owned copy, since it will not be immediately available in the database.
Add a new flag field to note blocks that lets us know if it's owned by
malloc or nostrdb.
We the add a free function that checks this flag and frees the object if
its set. If it is not set then it doesn nothing because it likely came
from the database.
Signed-off-by: William Casarin <jb55@jb55.com>
Fix parsing URL when encountering a period at the end of the url by
setting it as disallowed from being present at the end of a
URL.
Some characters are disallowed to be present at the end of URLs.
Presently, the period character is the only disallowed character.
A character is the last character in the URL if it is followed by
is_whitespace() or if it's the last character in the string.
Signed-off-by: kernelkind <kernelkind@gmail.com>
Tested-by: William Casarin <jb55@jb55.com>
Signed-off-by: William Casarin <jb55@jb5.com>
Signed-off-by: William Casarin <jb55@jb55.com>
