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feat(storage,document,sqlite): implements order by and limit #4

Merged
wpetit merged 1 commits from issue-3 into master 2023-03-01 12:13:32 +01:00
Conversation 0 Commits 1 Files Changed 3 +269 -10
3 changed files with 269 additions and 10 deletions
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12
pkg/storage/query_option.go → pkg/storage/query_options.go
View File

@ -7,35 +7,35 @@ const (
OrderDirectionDesc OrderDirection = "DESC"
)
type QueryOption struct {
type QueryOptions struct {
Limit *int
Offset *int
OrderBy *string
OrderDirection *OrderDirection
}
type QueryOptionFunc func(o *QueryOption)
type QueryOptionFunc func(o *QueryOptions)
func WithLimit(limit int) QueryOptionFunc {
return func(o *QueryOption) {
return func(o *QueryOptions) {
o.Limit = &limit
}
}
func WithOffset(offset int) QueryOptionFunc {
return func(o *QueryOption) {
return func(o *QueryOptions) {
o.Offset = &offset
}
}
func WithOrderBy(orderBy string) QueryOptionFunc {
return func(o *QueryOption) {
return func(o *QueryOptions) {
o.OrderBy = &orderBy
}
}
func WithOrderDirection(direction OrderDirection) QueryOptionFunc {
return func(o *QueryOption) {
return func(o *QueryOptions) {
o.OrderDirection = &direction
}
}

59
pkg/storage/sqlite/document_store.go
View File

@ -4,6 +4,7 @@ import (
"context"
"database/sql"
"fmt"
"math"
"sync"
"time"
@ -90,6 +91,11 @@ func (s *DocumentStore) Get(ctx context.Context, collection string, id storage.D
// Query implements storage.DocumentStore
func (s *DocumentStore) Query(ctx context.Context, collection string, filter *filter.Filter, funcs ...storage.QueryOptionFunc) ([]storage.Document, error) {
opts := &storage.QueryOptions{}
for _, fn := range funcs {
fn(opts)
}
var documents []storage.Document
err := s.withTx(ctx, func(tx *sql.Tx) error {
@ -120,6 +126,24 @@ func (s *DocumentStore) Query(ctx context.Context, collection string, filter *fi
args = append([]interface{}{collection}, args...)
if opts.OrderBy != nil {
query, args = withOrderByClause(query, args, *opts.OrderBy, *opts.OrderDirection)
}
if opts.Offset != nil || opts.Limit != nil {
offset := 0
if opts.Offset != nil {
offset = *opts.Offset
}
limit := math.MaxInt
if opts.Limit != nil {
limit = *opts.Limit
}
query, args = withLimitOffsetClause(query, args, limit, offset)
}
logger.Debug(
ctx, "executing query",
logger.F("query", query),
@ -331,6 +355,41 @@ func (s *DocumentStore) ensureTables(ctx context.Context, db *sql.DB) error {
return nil
}
func withOrderByClause(query string, args []any, orderBy string, orderDirection storage.OrderDirection) (string, []any) {
direction := "ASC"
if orderDirection == storage.OrderDirectionDesc {
direction = "DESC"
}
var column string
switch orderBy {
case storage.DocumentAttrID:
column = "id"
case storage.DocumentAttrCreatedAt:
column = "created_at"
case storage.DocumentAttrUpdatedAt:
column = "updated_at"
default:
column = fmt.Sprintf("json_extract(data, '$.' || $%d)", len(args)+1)
args = append(args, orderBy)
}
query += fmt.Sprintf(`ORDER BY %s %s`, column, direction)
return query, args
}
func withLimitOffsetClause(query string, args []any, limit int, offset int) (string, []any) {
query += fmt.Sprintf(`LIMIT $%d OFFSET $%d`, len(args)+1, len(args)+2)
args = append(args, limit, offset)
return query, args
}
func NewDocumentStore(path string) *DocumentStore {
return &DocumentStore{
db: nil,

208
pkg/storage/testsuite/document_store_ops.go
View File

@ -41,7 +41,7 @@ var documentStoreOpsTestCases = []documentStoreOpsTestCase{
}),
)
results, err := store.Query(ctx, collection, filter, nil)
results, err := store.Query(ctx, collection, filter)
if err != nil {
return errors.WithStack(err)
}
@ -82,7 +82,7 @@ var documentStoreOpsTestCases = []documentStoreOpsTestCase{
}),
)
results, err := store.Query(ctx, collection, filter, nil)
results, err := store.Query(ctx, collection, filter)
if err != nil {
return errors.WithStack(err)
}
@ -127,7 +127,7 @@ var documentStoreOpsTestCases = []documentStoreOpsTestCase{
),
)
results, err := store.Query(ctx, collection, filter, nil)
results, err := store.Query(ctx, collection, filter)
if err != nil {
return errors.WithStack(err)
}
@ -219,7 +219,7 @@ var documentStoreOpsTestCases = []documentStoreOpsTestCase{
// Verify that there is no additional created document in the collection
results, err := store.Query(ctx, collection, nil, nil)
results, err := store.Query(ctx, collection, nil)
if err != nil {
return errors.WithStack(err)
}
@ -228,6 +228,206 @@ var documentStoreOpsTestCases = []documentStoreOpsTestCase{
return errors.Errorf("len(results): expected '%v', got '%v'", e, g)
}
return nil
},
},
{
Name: "Query order by document field",
Run: func(ctx context.Context, store storage.DocumentStore) error {
docs := []storage.Document{
{
"sortedField": 0,
"name": "Item 1",
},
{
"sortedField": 1,
"name": "Item 2",
},
{
"sortedField": 2,
"name": "Item 3",
},
}
collection := "ordered_query_by_document_field"
for _, doc := range docs {
if _, err := store.Upsert(ctx, collection, doc); err != nil {
return errors.WithStack(err)
}
}
results, err := store.Query(
ctx, collection, nil,
storage.WithOrderBy("sortedField"),
storage.WithOrderDirection(storage.OrderDirectionAsc),
)
if err != nil {
return errors.WithStack(err)
}
if e, g := 3, len(results); e != g {
return errors.Errorf("len(results): expected '%v', got '%v'", e, g)
}
if e, g := docs[0]["name"], results[0]["name"]; e != g {
return errors.Errorf("results[0][\"name\"]: expected '%v', got '%v'", e, g)
}
if e, g := docs[2]["name"], results[2]["name"]; e != g {
return errors.Errorf("results[2][\"name\"]: expected '%v', got '%v'", e, g)
}
results, err = store.Query(
ctx, collection, nil,
storage.WithOrderBy("sortedField"),
storage.WithOrderDirection(storage.OrderDirectionDesc),
)
if err != nil {
return errors.WithStack(err)
}
if e, g := 3, len(results); e != g {
return errors.Errorf("len(results): expected '%v', got '%v'", e, g)
}
if e, g := docs[2]["name"], results[0]["name"]; e != g {
return errors.Errorf("results[0][\"name\"]: expected '%v', got '%v'", e, g)
}
if e, g := docs[0]["name"], results[2]["name"]; e != g {
return errors.Errorf("results[2][\"name\"]: expected '%v', got '%v'", e, g)
}
return nil
},
},
{
Name: "Query order by special attr",
Run: func(ctx context.Context, store storage.DocumentStore) error {
docs := []storage.Document{
{
"name": "Item 1",
},
{
"name": "Item 2",
},
{
"name": "Item 3",
},
}
collection := "ordered_query_by_special_attr"
for _, doc := range docs {
if _, err := store.Upsert(ctx, collection, doc); err != nil {
return errors.WithStack(err)
}
}
results, err := store.Query(
ctx, collection, nil,
storage.WithOrderBy(storage.DocumentAttrCreatedAt),
storage.WithOrderDirection(storage.OrderDirectionAsc),
)
if err != nil {
return errors.WithStack(err)
}
if e, g := 3, len(results); e != g {
return errors.Errorf("len(results): expected '%v', got '%v'", e, g)
}
if e, g := docs[0]["name"], results[0]["name"]; e != g {
return errors.Errorf("results[0][\"name\"]: expected '%v', got '%v'", e, g)
}
if e, g := docs[2]["name"], results[2]["name"]; e != g {
return errors.Errorf("results[2][\"name\"]: expected '%v', got '%v'", e, g)
}
results, err = store.Query(
ctx, collection, nil,
storage.WithOrderBy(storage.DocumentAttrCreatedAt),
storage.WithOrderDirection(storage.OrderDirectionDesc),
)
if err != nil {
return errors.WithStack(err)
}
if e, g := 3, len(results); e != g {
return errors.Errorf("len(results): expected '%v', got '%v'", e, g)
}
if e, g := docs[2]["name"], results[0]["name"]; e != g {
return errors.Errorf("results[0][\"name\"]: expected '%v', got '%v'", e, g)
}
if e, g := docs[0]["name"], results[2]["name"]; e != g {
return errors.Errorf("results[2][\"name\"]: expected '%v', got '%v'", e, g)
}
return nil
},
},
{
Name: "Query limit and offset",
Run: func(ctx context.Context, store storage.DocumentStore) error {
docs := []storage.Document{
{"name": "Item 1"},
{"name": "Item 2"},
{"name": "Item 3"},
{"name": "Item 4"},
}
collection := "query_limit_and_offset"
for _, doc := range docs {
if _, err := store.Upsert(ctx, collection, doc); err != nil {
return errors.WithStack(err)
}
}
results, err := store.Query(
ctx, collection, nil,
storage.WithLimit(2),
)
if err != nil {
return errors.WithStack(err)
}
if e, g := 2, len(results); e != g {
return errors.Errorf("len(results): expected '%v', got '%v'", e, g)
}
if e, g := docs[0]["name"], results[0]["name"]; e != g {
return errors.Errorf("results[0][\"name\"]: expected '%v', got '%v'", e, g)
}
if e, g := docs[1]["name"], results[1]["name"]; e != g {
return errors.Errorf("results[1][\"name\"]: expected '%v', got '%v'", e, g)
}
results, err = store.Query(
ctx, collection, nil,
storage.WithOffset(2),
)
if err != nil {
return errors.WithStack(err)
}
if e, g := 2, len(results); e != g {
return errors.Errorf("len(results): expected '%v', got '%v'", e, g)
}
if e, g := docs[2]["name"], results[0]["name"]; e != g {
return errors.Errorf("results[0][\"name\"]: expected '%v', got '%v'", e, g)
}
if e, g := docs[3]["name"], results[1]["name"]; e != g {
return errors.Errorf("results[1][\"name\"]: expected '%v', got '%v'", e, g)
}
return nil
},
},