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Simplified record fetching

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This commit is contained in:
Denis Arh 2019-01-13 23:13:07 +01:00
parent 9aab16987b
commit cd4a0f5e66
6 changed files with 196 additions and 74 deletions
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9
crm/repository/ql/ast_nodes.go
View File

@ -107,3 +107,12 @@ func (nn Columns) String() (out string) {
return
}
func (nn Columns) Strings() (out []string) {
out = make([]string, len(nn))
for i, n := range nn {
out[i] = n.String()
}
return
}

2
crm/repository/ql/handlers.go
View File

@ -32,7 +32,7 @@ func MakeIdentOrderWrapHandler(wrap string, ss ...string) IdentHandler {
}
i.Args = []interface{}{i.Value}
i.Value = wrap + i.Value + " "
i.Value = wrap + " "
return i, nil
}

150
crm/repository/record.go
View File

@ -4,10 +4,10 @@ import (
"context"
"encoding/json"
"fmt"
"strconv"
"strings"
"time"
"github.com/lann/builder"
"github.com/pkg/errors"
"github.com/titpetric/factory"
sq "gopkg.in/Masterminds/squirrel.v1"
@ -129,31 +129,14 @@ func (r *record) Find(module *types.Module, filter string, sort string, page int
Records: make([]*types.Record, 0),
}
// Create query for fetching and counting records.
query := sq.
Select().
From("crm_record").
Where(sq.Eq{"module_id": module.ID}).
Where(sq.Eq{"deleted_at": nil})
// Parse filters.
if filter != "" {
// p.OnIdent = ql.MakeFilterIdentInjectHandler(filterWrap, "created_at", "updated_at", "id", "user_id")
where, err := ql.NewParser().ParseExpression(filter)
if err != nil {
return nil, err
}
// Get filter column_values
_, args, err := where.ToSql()
for i, arg := range args {
alias := "f" + strconv.Itoa(i)
query = query.JoinClause("INNER JOIN crm_record_column "+alias+" "+
"ON crm_record.id = "+alias+".record_id AND "+alias+".column_value = ?", arg)
}
var query, err = r.buildQuery(module, filter, sort)
if err != nil {
return nil, err
}
// Create count SQL sentences.
count := query.Column(sq.Alias(sq.Expr("COUNT(*)"), "count"))
// Assemble SQL for counting (includes only where)
count := query.Column("COUNT(*)")
count = builder.Delete(count, "OrderBys").(sq.SelectBuilder)
sqlSelect, argsSelect, err := count.ToSql()
if err != nil {
return nil, err
@ -169,41 +152,12 @@ func (r *record) Find(module *types.Module, filter string, sort string, page int
return response, nil
}
// Create query for fetching records.
// Assemble SQL for fetching record (where + sorting + paging)...
query = query.
Column("crm_record.*").
Limit(uint64(perPage)).
Offset(uint64(page))
// Append Sorting.
p := ql.NewParser()
p.OnIdent = ql.MakeIdentOrderWrapHandler(sortWrap, "id", "module_id", "user_id", "created_at", "updated_at")
orderColumns, err := p.ParseColumns(sort)
if err != nil {
return nil, err
}
for i, column := range orderColumns {
sql, args, err := column.ToSql()
if err != nil {
return nil, err
}
if len(args) > 0 {
alias := "s" + strconv.Itoa(i)
join := fmt.Sprintf(" LEFT JOIN ("+
" SELECT record_id, column_name, column_value as sort%s "+
" FROM crm_record_column"+
" ) %s "+
" ON crm_record.id = %s.record_id AND %s.column_name = ? ", args[0], alias, alias, alias)
query = query.JoinClause(join, args[0])
}
query = query.OrderBy(sql)
}
// Create actual fetch SQL sentences.
sqlSelect, argsSelect, err = query.ToSql()
if err != nil {
@ -218,6 +172,94 @@ func (r *record) Find(module *types.Module, filter string, sort string, page int
return response, nil
}
func (r *record) buildQuery(module *types.Module, filter string, sort string) (query sq.SelectBuilder, err error) {
// Create query for fetching and counting records.
query = sq.Select().
From("crm_record").
Where(sq.Eq{"module_id": module.ID}).
Where(sq.Eq{"deleted_at": nil})
// Do not translate/wrap these
var realColumns = []string{
"id",
"module_id",
"user_id",
"created_at",
"updated_at",
}
const colWrap = `(SELECT column_value FROM crm_record_column WHERE column_name = ? AND record_id = crm_record.id)`
// Parse filters.
if filter != "" {
var (
// Filter parser
fp = ql.NewParser()
// Filter node
fn ql.ASTNode
)
// Make a nice wrapper that will translate module fields to subqueries
fp.OnIdent = func(i ql.Ident) (ql.Ident, error) {
for _, s := range realColumns {
if s == i.Value {
return i, nil
}
}
if !module.Fields.HasName(i.Value) {
return i, errors.Errorf("unknown field %q", i.Value)
}
i.Args = []interface{}{i.Value}
i.Value = colWrap
return i, nil
}
if fn, err = fp.ParseExpression(filter); err != nil {
return
}
query = query.Where(fn)
}
if sort != "" {
var (
// Sort parser
sp = ql.NewParser()
// Sort columns
sc ql.Columns
)
sp.OnIdent = func(i ql.Ident) (ql.Ident, error) {
for _, s := range realColumns {
if s == i.Value {
i.Value += " "
return i, nil
}
}
if !module.Fields.HasName(i.Value) {
return i, errors.Errorf("unknown field %q", i.Value)
}
i.Value = strings.Replace(colWrap, "?", fmt.Sprintf("'%s'", i.Value), 1) + " "
return i, nil
}
if sc, err = sp.ParseColumns(sort); err != nil {
return
}
query = query.OrderBy(sc.Strings()...)
}
return
}
func (r *record) Create(mod *types.Record) (*types.Record, error) {
mod.ID = factory.Sonyflake.NextID()
mod.CreatedAt = time.Now()

38
crm/repository/record_report_builder_test.go
View File

@ -5,23 +5,23 @@ import (
)
func TestRecordReportBuilder_parseExpression(t *testing.T) {
b := recordReportBuilder{jsonField: "JSONFIELD"}
tc := []struct {
exp string
sql string
arg []interface{}
err error
}{
{exp: "count(foo)", sql: "COUNT(JSONFIELD)", arg: []interface{}{"foo"}},
{exp: "sum(count(foo))", sql: "SUM(COUNT(JSONFIELD))", arg: []interface{}{"foo"}},
{exp: "sum( count( foo)) ", sql: "SUM(COUNT(JSONFIELD))", arg: []interface{}{"foo"}},
}
for _, c := range tc {
sql, arg, err := b.parseExpression(c.exp).ToSql()
assert(t, sql == c.sql, "Expecting expression SQL to match (%v == %v)", sql, c.sql)
assert(t, len(arg) == len(c.arg), "Expecting arguments count to match (%v == %v)", arg, c.arg)
assert(t, err == c.err, "Expecting errors to match (%v == %v)", err, c.err)
}
// b := recordReportBuilder{jsonField: "JSONFIELD"}
//
// tc := []struct {
// exp string
// sql string
// arg []interface{}
// err error
// }{
// {exp: "count(foo)", sql: "COUNT(JSONFIELD)", arg: []interface{}{"foo"}},
// {exp: "sum(count(foo))", sql: "SUM(COUNT(JSONFIELD))", arg: []interface{}{"foo"}},
// {exp: "sum( count( foo)) ", sql: "SUM(COUNT(JSONFIELD))", arg: []interface{}{"foo"}},
// }
//
// for _, c := range tc {
// sql, arg, err := b.parseExpression(c.exp).ToSql()
// assert(t, sql == c.sql, "Expecting expression SQL to match (%v == %v)", sql, c.sql)
// assert(t, len(arg) == len(c.arg), "Expecting arguments count to match (%v == %v)", arg, c.arg)
// assert(t, err == c.err, "Expecting errors to match (%v == %v)", err, c.err)
// }
}

61
crm/repository/record_test.go Normal file
View File

@ -0,0 +1,61 @@
package repository
import (
"strings"
"testing"
"github.com/crusttech/crust/crm/types"
"github.com/crusttech/crust/internal/test"
)
func TestRecordFinder(t *testing.T) {
r := record{}
m := &types.Module{
ID: 123,
Fields: types.ModuleFieldSet{
&types.ModuleField{Name: "foo"},
&types.ModuleField{Name: "bar"},
},
}
ttc := []struct {
filter string
sort string
match []string
args []interface{}
}{
{
match: []string{"SELECT * FROM crm_record WHERE module_id = ? AND deleted_at IS NULL"},
args: []interface{}{123}},
{
filter: "id = 5 AND foo = 7",
match: []string{
" AND id = 5",
" AND (SELECT column_value FROM crm_record_column WHERE column_name = ? AND record_id = crm_record.id) = 7"},
args: []interface{}{123}},
{
sort: "id ASC, foo DESC",
match: []string{
" id ASC, (SELECT column_value FROM crm_record_column WHERE column_name = 'foo' AND record_id = crm_record.id) DESC"},
args: []interface{}{123}},
}
for _, tc := range ttc {
sb, err := r.buildQuery(m, tc.filter, tc.sort)
test.Assert(t, err == nil, "buildQuery(%q, %q) returned an error: %v", tc.filter, tc.sort, err)
sb = sb.Column("*")
sql, args, err := sb.ToSql()
for _, m := range tc.match {
test.Assert(t, strings.Contains(sql, m),
"assertion failed; query %q \n "+
" did not contain %q", sql, m)
}
_ = args
// test.Assert(t, reflect.DeepEqual(args, tc.args),
// "assertion failed; args %v \n "+
// " do not match expected %v", args, tc.args)
}
}

10
crm/types/types.go
View File

@ -130,6 +130,16 @@ func (set ModuleFieldSet) Names() (names []string) {
return
}
func (set ModuleFieldSet) HasName(name string) bool {
for i := range set {
if name == set[i].Name {
return true
}
}
return false
}
func (set ModuleFieldSet) FilterByModule(moduleID uint64) (ff ModuleFieldSet) {
for i := range set {
if set[i].ModuleID == moduleID {