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add OmitNil feature for package gdb

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This commit is contained in:
John Guo
2021-08-13 11:28:47 +08:00
parent 12f2193963
commit 903f29a824
7 changed files with 181 additions and 43 deletions
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60
database/gdb/gdb_func.go
View File

@ -489,11 +489,20 @@ func formatSql(sql string, args []interface{}) (newSql string, newArgs []interfa
return handleArguments(sql, args)
}
type formatWhereInput struct {
Where interface{}
Args []interface{}
OmitNil bool
OmitEmpty bool
Schema string
Table string
}
// formatWhere formats where statement and its arguments for `Where` and `Having` statements.
func formatWhere(db DB, where interface{}, args []interface{}, omitEmpty bool, schema, table string) (newWhere string, newArgs []interface{}) {
func formatWhere(db DB, in formatWhereInput) (newWhere string, newArgs []interface{}) {
var (
buffer = bytes.NewBuffer(nil)
rv = reflect.ValueOf(where)
rv = reflect.ValueOf(in.Where)
kind = rv.Kind()
)
for kind == reflect.Ptr {
@ -502,12 +511,17 @@ func formatWhere(db DB, where interface{}, args []interface{}, omitEmpty bool, s
}
switch kind {
case reflect.Array, reflect.Slice:
newArgs = formatWhereInterfaces(db, gconv.Interfaces(where), buffer, newArgs)
newArgs = formatWhereInterfaces(db, gconv.Interfaces(in.Where), buffer, newArgs)
case reflect.Map:
for key, value := range DataToMapDeep(where) {
if gregex.IsMatchString(regularFieldNameRegPattern, key) && omitEmpty && empty.IsEmpty(value) {
continue
for key, value := range DataToMapDeep(in.Where) {
if gregex.IsMatchString(regularFieldNameRegPattern, key) {
if in.OmitNil && empty.IsNil(value) {
continue
}
if in.OmitEmpty && empty.IsEmpty(value) {
continue
}
}
newArgs = formatWhereKeyValue(db, buffer, newArgs, key, value)
}
@ -517,11 +531,16 @@ func formatWhere(db DB, where interface{}, args []interface{}, omitEmpty bool, s
// it then uses its Iterate function to iterates its key-value pairs.
// For example, ListMap and TreeMap are ordered map,
// which implement apiIterator interface and are index-friendly for where conditions.
if iterator, ok := where.(apiIterator); ok {
if iterator, ok := in.Where.(apiIterator); ok {
iterator.Iterator(func(key, value interface{}) bool {
ketStr := gconv.String(key)
if gregex.IsMatchString(regularFieldNameRegPattern, ketStr) && omitEmpty && empty.IsEmpty(value) {
return true
if gregex.IsMatchString(regularFieldNameRegPattern, ketStr) {
if in.OmitNil && empty.IsNil(value) {
return true
}
if in.OmitEmpty && empty.IsEmpty(value) {
return true
}
}
newArgs = formatWhereKeyValue(db, buffer, newArgs, ketStr, value)
return true
@ -529,12 +548,15 @@ func formatWhere(db DB, where interface{}, args []interface{}, omitEmpty bool, s
break
}
// Automatically mapping and filtering the struct attribute.
data := DataToMapDeep(where)
if table != "" {
data, _ = db.GetCore().mappingAndFilterData(schema, table, data, true)
data := DataToMapDeep(in.Where)
if in.Table != "" {
data, _ = db.GetCore().mappingAndFilterData(in.Schema, in.Table, data, true)
}
for key, value := range data {
if omitEmpty && empty.IsEmpty(value) {
if in.OmitNil && empty.IsNil(value) {
continue
}
if in.OmitEmpty && empty.IsEmpty(value) {
continue
}
newArgs = formatWhereKeyValue(db, buffer, newArgs, key, value)
@ -544,14 +566,14 @@ func formatWhere(db DB, where interface{}, args []interface{}, omitEmpty bool, s
// Usually a string.
var (
i = 0
whereStr = gconv.String(where)
whereStr = gconv.String(in.Where)
)
for {
if i >= len(args) {
if i >= len(in.Args) {
break
}
// Sub query, which is always used along with a string condition.
if model, ok := args[i].(*Model); ok {
if model, ok := in.Args[i].(*Model); ok {
var (
index = -1
)
@ -565,7 +587,7 @@ func formatWhere(db DB, where interface{}, args []interface{}, omitEmpty bool, s
}
return s
})
args = gutil.SliceDelete(args, i)
in.Args = gutil.SliceDelete(in.Args, i)
continue
}
i++
@ -574,9 +596,9 @@ func formatWhere(db DB, where interface{}, args []interface{}, omitEmpty bool, s
}
if buffer.Len() == 0 {
return "", args
return "", in.Args
}
newArgs = append(newArgs, args...)
newArgs = append(newArgs, in.Args...)
newWhere = buffer.String()
if len(newArgs) > 0 {
if gstr.Pos(newWhere, "?") == -1 {

11
database/gdb/gdb_model.go
View File

@ -104,9 +104,14 @@ func (c *Core) Model(tableNameQueryOrStruct ...interface{}) *Model {
if len(tableNameQueryOrStruct) > 1 {
conditionStr := gconv.String(tableNameQueryOrStruct[0])
if gstr.Contains(conditionStr, "?") {
tableStr, extraArgs = formatWhere(
c.db, conditionStr, tableNameQueryOrStruct[1:], false, "", "",
)
tableStr, extraArgs = formatWhere(c.db, formatWhereInput{
Where: conditionStr,
Args: tableNameQueryOrStruct[1:],
OmitNil: false,
OmitEmpty: false,
Schema: "",
Table: "",
})
}
}
// Normal model creation.

44
database/gdb/gdb_model_condition.go
View File

@ -388,9 +388,14 @@ func (m *Model) formatCondition(limit1 bool, isCountStatement bool) (conditionWh
switch v.Operator {
case whereHolderOperatorWhere:
if conditionWhere == "" {
newWhere, newArgs := formatWhere(
m.db, v.Where, v.Args, m.option&optionOmitEmptyWhere > 0, m.schema, m.tables,
)
newWhere, newArgs := formatWhere(m.db, formatWhereInput{
Where: v.Where,
Args: v.Args,
OmitNil: m.option&optionOmitNilWhere > 0,
OmitEmpty: m.option&optionOmitEmptyWhere > 0,
Schema: m.schema,
Table: m.tables,
})
if len(newWhere) > 0 {
conditionWhere = newWhere
conditionArgs = newArgs
@ -400,9 +405,14 @@ func (m *Model) formatCondition(limit1 bool, isCountStatement bool) (conditionWh
fallthrough
case whereHolderOperatorAnd:
newWhere, newArgs := formatWhere(
m.db, v.Where, v.Args, m.option&optionOmitEmptyWhere > 0, m.schema, m.tables,
)
newWhere, newArgs := formatWhere(m.db, formatWhereInput{
Where: v.Where,
Args: v.Args,
OmitNil: m.option&optionOmitNilWhere > 0,
OmitEmpty: m.option&optionOmitEmptyWhere > 0,
Schema: m.schema,
Table: m.tables,
})
if len(newWhere) > 0 {
if len(conditionWhere) == 0 {
conditionWhere = newWhere
@ -415,9 +425,14 @@ func (m *Model) formatCondition(limit1 bool, isCountStatement bool) (conditionWh
}
case whereHolderOperatorOr:
newWhere, newArgs := formatWhere(
m.db, v.Where, v.Args, m.option&optionOmitEmptyWhere > 0, m.schema, m.tables,
)
newWhere, newArgs := formatWhere(m.db, formatWhereInput{
Where: v.Where,
Args: v.Args,
OmitNil: m.option&optionOmitNilWhere > 0,
OmitEmpty: m.option&optionOmitEmptyWhere > 0,
Schema: m.schema,
Table: m.tables,
})
if len(newWhere) > 0 {
if len(conditionWhere) == 0 {
conditionWhere = newWhere
@ -457,9 +472,14 @@ func (m *Model) formatCondition(limit1 bool, isCountStatement bool) (conditionWh
}
// HAVING.
if len(m.having) > 0 {
havingStr, havingArgs := formatWhere(
m.db, m.having[0], gconv.Interfaces(m.having[1]), m.option&optionOmitEmptyWhere > 0, m.schema, m.tables,
)
havingStr, havingArgs := formatWhere(m.db, formatWhereInput{
Where: m.having[0],
Args: gconv.Interfaces(m.having[1]),
OmitNil: m.option&optionOmitNilWhere > 0,
OmitEmpty: m.option&optionOmitEmptyWhere > 0,
Schema: m.schema,
Table: m.tables,
})
if len(havingStr) > 0 {
conditionExtra += " HAVING " + havingStr
conditionArgs = append(conditionArgs, havingArgs...)

33
database/gdb/gdb_model_option.go
View File

@ -7,9 +7,12 @@
package gdb
const (
optionOmitNil = optionOmitNilWhere | optionOmitNilData
optionOmitEmpty = optionOmitEmptyWhere | optionOmitEmptyData
optionOmitEmptyWhere = 1 << iota // 8
optionOmitEmptyData // 16
optionOmitNilWhere // 32
optionOmitNilData // 64
)
// Option adds extra operation option for the model.
@ -20,7 +23,7 @@ func (m *Model) Option(option int) *Model {
return model
}
// OmitEmpty sets OmitEmpty option for the model, which automatically filers
// OmitEmpty sets optionOmitEmpty option for the model, which automatically filers
// the data and where parameters for `empty` values.
func (m *Model) OmitEmpty() *Model {
model := m.getModel()
@ -28,7 +31,7 @@ func (m *Model) OmitEmpty() *Model {
return model
}
// OmitEmptyWhere sets OmitEmptyWhere option for the model, which automatically filers
// OmitEmptyWhere sets optionOmitEmptyWhere option for the model, which automatically filers
// the Where/Having parameters for `empty` values.
func (m *Model) OmitEmptyWhere() *Model {
model := m.getModel()
@ -36,10 +39,34 @@ func (m *Model) OmitEmptyWhere() *Model {
return model
}
// OmitEmptyData sets OmitEmptyData option for the model, which automatically filers
// OmitEmptyData sets optionOmitEmptyData option for the model, which automatically filers
// the Data parameters for `empty` values.
func (m *Model) OmitEmptyData() *Model {
model := m.getModel()
model.option = model.option | optionOmitEmptyData
return model
}
// OmitNil sets optionOmitNil option for the model, which automatically filers
// the data and where parameters for `nil` values.
func (m *Model) OmitNil() *Model {
model := m.getModel()
model.option = model.option | optionOmitNil
return model
}
// OmitNilWhere sets optionOmitNilWhere option for the model, which automatically filers
// the Where/Having parameters for `nil` values.
func (m *Model) OmitNilWhere() *Model {
model := m.getModel()
model.option = model.option | optionOmitNilWhere
return model
}
// OmitNilData sets optionOmitNilData option for the model, which automatically filers
// the Data parameters for `nil` values.
func (m *Model) OmitNilData() *Model {
model := m.getModel()
model.option = model.option | optionOmitNilData
return model
}

12
database/gdb/gdb_model_utility.go
View File

@ -109,6 +109,18 @@ func (m *Model) doMappingAndFilterForInsertOrUpdateDataMap(data Map, allowOmitEm
if err != nil {
return nil, err
}
// Remove key-value pairs of which the value is nil.
if allowOmitEmpty && m.option&optionOmitNilData > 0 {
tempMap := make(Map, len(data))
for k, v := range data {
if empty.IsNil(v) {
continue
}
tempMap[k] = v
}
data = tempMap
}
// Remove key-value pairs of which the value is empty.
if allowOmitEmpty && m.option&optionOmitEmptyData > 0 {
tempMap := make(Map, len(data))

1
database/gdb/gdb_z_mysql_association_with_test.go
View File

@ -368,6 +368,7 @@ PRIMARY KEY (id)
gtest.Assert(err, nil)
}
}
gtest.C(t, func(t *gtest.T) {
var users []*User
err := db.With(User{}).

63
database/gdb/gdb_z_mysql_model_test.go
View File

@ -2132,24 +2132,75 @@ func Test_Model_Option_List(t *testing.T) {
}
func Test_Model_OmitEmpty(t *testing.T) {
gtest.C(t, func(t *gtest.T) {
table := fmt.Sprintf(`table_%s`, gtime.TimestampNanoStr())
if _, err := db.Exec(fmt.Sprintf(`
table := fmt.Sprintf(`table_%s`, gtime.TimestampNanoStr())
if _, err := db.Exec(fmt.Sprintf(`
CREATE TABLE IF NOT EXISTS %s (
id int(10) unsigned NOT NULL AUTO_INCREMENT,
name varchar(45) NOT NULL,
PRIMARY KEY (id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
`, table)); err != nil {
gtest.Error(err)
}
defer dropTable(table)
gtest.Error(err)
}
defer dropTable(table)
gtest.C(t, func(t *gtest.T) {
_, err := db.Model(table).OmitEmpty().Data(g.Map{
"id": 1,
"name": "",
}).Save()
t.AssertNE(err, nil)
})
gtest.C(t, func(t *gtest.T) {
_, err := db.Model(table).OmitEmptyData().Data(g.Map{
"id": 1,
"name": "",
}).Save()
t.AssertNE(err, nil)
})
gtest.C(t, func(t *gtest.T) {
_, err := db.Model(table).OmitEmptyWhere().Data(g.Map{
"id": 1,
"name": "",
}).Save()
t.Assert(err, nil)
})
}
func Test_Model_OmitNil(t *testing.T) {
table := fmt.Sprintf(`table_%s`, gtime.TimestampNanoStr())
if _, err := db.Exec(fmt.Sprintf(`
CREATE TABLE IF NOT EXISTS %s (
id int(10) unsigned NOT NULL AUTO_INCREMENT,
name varchar(45) NOT NULL,
PRIMARY KEY (id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
`, table)); err != nil {
gtest.Error(err)
}
defer dropTable(table)
gtest.C(t, func(t *gtest.T) {
_, err := db.Model(table).OmitNil().Data(g.Map{
"id": 1,
"name": nil,
}).Save()
t.AssertNE(err, nil)
})
gtest.C(t, func(t *gtest.T) {
_, err := db.Model(table).OmitNil().Data(g.Map{
"id": 1,
"name": "",
}).Save()
t.Assert(err, nil)
})
gtest.C(t, func(t *gtest.T) {
_, err := db.Model(table).OmitNilWhere().Data(g.Map{
"id": 1,
"name": "",
}).Save()
t.Assert(err, nil)
})
}
func Test_Model_Option_Where(t *testing.T) {