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server: fix paging bug where p1->p2->p1 wouldn't show consistent results

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This commit is contained in:
Bill Thiede 2024-08-06 21:15:10 -07:00
parent 474cf38180
commit 7c5ef96ff0
3 changed files with 9 additions and 12 deletions
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7
server/src/graphql.rs
View File

@ -302,10 +302,7 @@ impl QueryRoot {
if let Some(last) = last {
if results.len() > last {
has_previous_page = true;
// TODO: find better way to do this.
results.reverse();
results.truncate(last);
results.reverse();
}
}
@ -325,10 +322,6 @@ impl QueryRoot {
notmuch_offset = offset;
}
}
info!(
"item: {} {}",
thread_summary.subject, thread_summary.timestamp
);
let cur = OpaqueCursor(SearchCursor {
newsreader_offset,
notmuch_offset,

4
server/src/lib.rs
View File

@ -357,8 +357,8 @@ fn compute_offset_limit(
// Reasonable defaults
(None, None, None, None) => (0, default_page_size),
(None, None, Some(first), None) => (0, first),
(Some(after), None, None, None) => (after, default_page_size),
(Some(after), None, Some(first), None) => (after, first),
(Some(after), None, None, None) => (after + 1, default_page_size),
(Some(after), None, Some(first), None) => (after + 1, first),
(None, Some(before), None, None) => (0.max(before - default_page_size), default_page_size),
(None, Some(before), None, Some(last)) => (0.max(before - last), last),
(None, None, None, Some(_)) => {

10
server/src/newsreader.rs
View File

@ -43,9 +43,13 @@ pub async fn search(
query: &Query,
) -> Result<Vec<(i32, ThreadSummary)>, async_graphql::Error> {
info!("search({after:?} {before:?} {first:?} {last:?} {query:?}");
let (offset, limit) = compute_offset_limit(after, before, first, last);
// The +1 is to see if there are more pages of data available.
let limit = limit + 1;
let (offset, mut limit) = compute_offset_limit(after, before, first, last);
if before.is_none() {
// When searching forward, the +1 is to see if there are more pages of data available.
// Searching backwards implies there's more pages forward, because the value represented by
// `before` is on the next page.
limit = limit + 1;
}
info!("search offset {offset} limit {limit}");
let rows = sqlx::query_file!(