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Explain SearchOptions and fix ToSearchOptions (#26542)

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Follow #26012 #26490.

A detailed description has been added to the comment.
This commit is contained in:
Jason Song 2023-08-16 23:40:13 +08:00 committed by GitHub
parent 1432d4eab9
commit 3b129aaa80
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GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 35 additions and 22 deletions
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1
modules/indexer/issues/db/options.go
View File

@ -14,6 +14,7 @@ import (
)
func ToDBOptions(ctx context.Context, options *internal.SearchOptions) (*issue_model.IssuesOptions, error) {
// See the comment of issues_model.SearchOptions for the reason why we need to convert
convertID := func(id *int64) int64 {
if id == nil {
return 0

36
modules/indexer/issues/dboptions.go
View File

@ -17,10 +17,6 @@ func ToSearchOptions(keyword string, opts *issues_model.IssuesOptions) *SearchOp
IsClosed: opts.IsClosed,
}
if opts.ProjectID != 0 {
searchOpt.ProjectID = &opts.ProjectID
}
if len(opts.LabelIDs) == 1 && opts.LabelIDs[0] == 0 {
searchOpt.NoLabelOnly = true
} else {
@ -41,25 +37,27 @@ func ToSearchOptions(keyword string, opts *issues_model.IssuesOptions) *SearchOp
searchOpt.MilestoneIDs = opts.MilestoneIDs
}
if opts.AssigneeID > 0 {
searchOpt.AssigneeID = &opts.AssigneeID
// See the comment of issues_model.SearchOptions for the reason why we need to convert
convertID := func(id int64) *int64 {
if id > 0 {
return &id
}
if opts.PosterID > 0 {
searchOpt.PosterID = &opts.PosterID
if id == db.NoConditionID {
var zero int64
return &zero
}
if opts.MentionedID > 0 {
searchOpt.MentionID = &opts.MentionedID
}
if opts.ReviewedID > 0 {
searchOpt.ReviewedID = &opts.ReviewedID
}
if opts.ReviewRequestedID > 0 {
searchOpt.ReviewRequestedID = &opts.ReviewRequestedID
}
if opts.SubscriberID > 0 {
searchOpt.SubscriberID = &opts.SubscriberID
return nil
}
searchOpt.ProjectID = convertID(opts.ProjectID)
searchOpt.ProjectBoardID = convertID(opts.ProjectBoardID)
searchOpt.PosterID = convertID(opts.PosterID)
searchOpt.AssigneeID = convertID(opts.AssigneeID)
searchOpt.MentionID = convertID(opts.MentionedID)
searchOpt.ReviewedID = convertID(opts.ReviewedID)
searchOpt.ReviewRequestedID = convertID(opts.ReviewRequestedID)
searchOpt.SubscriberID = convertID(opts.SubscriberID)
if opts.UpdatedAfterUnix > 0 {
searchOpt.UpdatedAfterUnix = &opts.UpdatedAfterUnix
}

16
modules/indexer/issues/internal/model.go
View File

@ -56,7 +56,21 @@ type SearchResult struct {
Hits []Match
}
// SearchOptions represents search options
// SearchOptions represents search options.
//
// It has a slightly different design from database query options.
// In database query options, a field is never a pointer, so it could be confusing when it's zero value:
// Do you want to find data with a field value of 0, or do you not specify the field in the options?
// To avoid this confusion, db introduced db.NoConditionID(-1).
// So zero value means the field is not specified in the search options, and db.NoConditionID means "== 0" or "id NOT IN (SELECT id FROM ...)"
// It's still not ideal, it trapped developers many times.
// And sometimes -1 could be a valid value, like issue ID, negative numbers indicate exclusion.
// Since db.NoConditionID is for "db" (the package name is db), it makes sense not to use it in the indexer:
// Why do bleve/elasticsearch/meilisearch indexers need to know about db.NoConditionID?
// So in SearchOptions, we use pointer for fields which could be not specified,
// and always use the value to filter if it's not nil, even if it's zero or negative.
// It can handle almost all cases, if there is an exception, we can add a new field, like NoLabelOnly.
// Unfortunately, we still use db for the indexer and have to convert between db.NoConditionID and nil for legacy reasons.
type SearchOptions struct {
Keyword string // keyword to search