a41f938cec
As we have seen, dependencies version can prevent the build. We should user lock versions on dependencies that we know work: * Packages are vendored * Add Godep support * Added addtional install step in readme * Fix travis build error
1317 lignes
38 Kio
Go
1317 lignes
38 Kio
Go
package gorm
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import (
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"database/sql"
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"database/sql/driver"
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"errors"
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"fmt"
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"regexp"
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"strconv"
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"strings"
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"time"
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"reflect"
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)
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// Scope contain current operation's information when you perform any operation on the database
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type Scope struct {
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Search *search
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Value interface{}
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SQL string
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SQLVars []interface{}
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db *DB
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instanceID string
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primaryKeyField *Field
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skipLeft bool
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fields *[]*Field
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selectAttrs *[]string
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}
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// IndirectValue return scope's reflect value's indirect value
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func (scope *Scope) IndirectValue() reflect.Value {
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return indirect(reflect.ValueOf(scope.Value))
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}
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// New create a new Scope without search information
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func (scope *Scope) New(value interface{}) *Scope {
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return &Scope{db: scope.NewDB(), Search: &search{}, Value: value}
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}
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////////////////////////////////////////////////////////////////////////////////
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// Scope DB
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////////////////////////////////////////////////////////////////////////////////
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// DB return scope's DB connection
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func (scope *Scope) DB() *DB {
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return scope.db
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}
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// NewDB create a new DB without search information
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func (scope *Scope) NewDB() *DB {
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if scope.db != nil {
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db := scope.db.clone()
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db.search = nil
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db.Value = nil
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return db
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}
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return nil
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}
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// SQLDB return *sql.DB
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func (scope *Scope) SQLDB() SQLCommon {
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return scope.db.db
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}
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// Dialect get dialect
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func (scope *Scope) Dialect() Dialect {
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return scope.db.parent.dialect
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}
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// Quote used to quote string to escape them for database
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func (scope *Scope) Quote(str string) string {
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if strings.Index(str, ".") != -1 {
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newStrs := []string{}
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for _, str := range strings.Split(str, ".") {
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newStrs = append(newStrs, scope.Dialect().Quote(str))
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}
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return strings.Join(newStrs, ".")
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}
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return scope.Dialect().Quote(str)
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}
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// Err add error to Scope
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func (scope *Scope) Err(err error) error {
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if err != nil {
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scope.db.AddError(err)
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}
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return err
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}
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// HasError check if there are any error
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func (scope *Scope) HasError() bool {
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return scope.db.Error != nil
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}
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// Log print log message
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func (scope *Scope) Log(v ...interface{}) {
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scope.db.log(v...)
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}
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// SkipLeft skip remaining callbacks
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func (scope *Scope) SkipLeft() {
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scope.skipLeft = true
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}
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// Fields get value's fields
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func (scope *Scope) Fields() []*Field {
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if scope.fields == nil {
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var (
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fields []*Field
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indirectScopeValue = scope.IndirectValue()
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isStruct = indirectScopeValue.Kind() == reflect.Struct
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)
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for _, structField := range scope.GetModelStruct().StructFields {
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if isStruct {
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fieldValue := indirectScopeValue
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for _, name := range structField.Names {
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fieldValue = reflect.Indirect(fieldValue).FieldByName(name)
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}
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fields = append(fields, &Field{StructField: structField, Field: fieldValue, IsBlank: isBlank(fieldValue)})
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} else {
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fields = append(fields, &Field{StructField: structField, IsBlank: true})
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}
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}
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scope.fields = &fields
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}
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return *scope.fields
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}
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// FieldByName find `gorm.Field` with field name or db name
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func (scope *Scope) FieldByName(name string) (field *Field, ok bool) {
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var (
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dbName = ToDBName(name)
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mostMatchedField *Field
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)
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for _, field := range scope.Fields() {
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if field.Name == name || field.DBName == name {
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return field, true
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}
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if field.DBName == dbName {
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mostMatchedField = field
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}
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}
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return mostMatchedField, mostMatchedField != nil
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}
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// PrimaryFields return scope's primary fields
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func (scope *Scope) PrimaryFields() (fields []*Field) {
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for _, field := range scope.Fields() {
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if field.IsPrimaryKey {
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fields = append(fields, field)
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}
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}
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return fields
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}
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// PrimaryField return scope's main primary field, if defined more that one primary fields, will return the one having column name `id` or the first one
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func (scope *Scope) PrimaryField() *Field {
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if primaryFields := scope.GetModelStruct().PrimaryFields; len(primaryFields) > 0 {
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if len(primaryFields) > 1 {
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if field, ok := scope.FieldByName("id"); ok {
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return field
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}
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}
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return scope.PrimaryFields()[0]
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}
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return nil
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}
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// PrimaryKey get main primary field's db name
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func (scope *Scope) PrimaryKey() string {
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if field := scope.PrimaryField(); field != nil {
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return field.DBName
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}
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return ""
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}
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// PrimaryKeyZero check main primary field's value is blank or not
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func (scope *Scope) PrimaryKeyZero() bool {
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field := scope.PrimaryField()
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return field == nil || field.IsBlank
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}
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// PrimaryKeyValue get the primary key's value
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func (scope *Scope) PrimaryKeyValue() interface{} {
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if field := scope.PrimaryField(); field != nil && field.Field.IsValid() {
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return field.Field.Interface()
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}
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return 0
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}
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// HasColumn to check if has column
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func (scope *Scope) HasColumn(column string) bool {
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for _, field := range scope.GetStructFields() {
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if field.IsNormal && (field.Name == column || field.DBName == column) {
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return true
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}
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}
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return false
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}
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// SetColumn to set the column's value, column could be field or field's name/dbname
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func (scope *Scope) SetColumn(column interface{}, value interface{}) error {
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var updateAttrs = map[string]interface{}{}
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if attrs, ok := scope.InstanceGet("gorm:update_attrs"); ok {
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updateAttrs = attrs.(map[string]interface{})
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defer scope.InstanceSet("gorm:update_attrs", updateAttrs)
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}
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if field, ok := column.(*Field); ok {
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updateAttrs[field.DBName] = value
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return field.Set(value)
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} else if name, ok := column.(string); ok {
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var (
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dbName = ToDBName(name)
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mostMatchedField *Field
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)
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for _, field := range scope.Fields() {
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if field.DBName == value {
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updateAttrs[field.DBName] = value
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return field.Set(value)
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}
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if (field.DBName == dbName) || (field.Name == name && mostMatchedField == nil) {
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mostMatchedField = field
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}
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}
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if mostMatchedField != nil {
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updateAttrs[mostMatchedField.DBName] = value
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return mostMatchedField.Set(value)
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}
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}
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return errors.New("could not convert column to field")
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}
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// CallMethod call scope value's method, if it is a slice, will call its element's method one by one
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func (scope *Scope) CallMethod(methodName string) {
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if scope.Value == nil {
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return
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}
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if indirectScopeValue := scope.IndirectValue(); indirectScopeValue.Kind() == reflect.Slice {
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for i := 0; i < indirectScopeValue.Len(); i++ {
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scope.callMethod(methodName, indirectScopeValue.Index(i))
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}
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} else {
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scope.callMethod(methodName, indirectScopeValue)
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}
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}
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// AddToVars add value as sql's vars, used to prevent SQL injection
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func (scope *Scope) AddToVars(value interface{}) string {
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if expr, ok := value.(*expr); ok {
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exp := expr.expr
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for _, arg := range expr.args {
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exp = strings.Replace(exp, "?", scope.AddToVars(arg), 1)
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}
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return exp
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}
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scope.SQLVars = append(scope.SQLVars, value)
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return scope.Dialect().BindVar(len(scope.SQLVars))
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}
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// SelectAttrs return selected attributes
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func (scope *Scope) SelectAttrs() []string {
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if scope.selectAttrs == nil {
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attrs := []string{}
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for _, value := range scope.Search.selects {
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if str, ok := value.(string); ok {
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attrs = append(attrs, str)
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} else if strs, ok := value.([]string); ok {
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attrs = append(attrs, strs...)
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} else if strs, ok := value.([]interface{}); ok {
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for _, str := range strs {
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attrs = append(attrs, fmt.Sprintf("%v", str))
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}
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}
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}
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scope.selectAttrs = &attrs
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}
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return *scope.selectAttrs
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}
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// OmitAttrs return omitted attributes
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func (scope *Scope) OmitAttrs() []string {
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return scope.Search.omits
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}
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type tabler interface {
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TableName() string
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}
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type dbTabler interface {
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TableName(*DB) string
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}
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// TableName return table name
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func (scope *Scope) TableName() string {
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if scope.Search != nil && len(scope.Search.tableName) > 0 {
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return scope.Search.tableName
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}
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if tabler, ok := scope.Value.(tabler); ok {
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return tabler.TableName()
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}
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if tabler, ok := scope.Value.(dbTabler); ok {
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return tabler.TableName(scope.db)
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}
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return scope.GetModelStruct().TableName(scope.db.Model(scope.Value))
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}
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// QuotedTableName return quoted table name
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func (scope *Scope) QuotedTableName() (name string) {
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if scope.Search != nil && len(scope.Search.tableName) > 0 {
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if strings.Index(scope.Search.tableName, " ") != -1 {
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return scope.Search.tableName
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}
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return scope.Quote(scope.Search.tableName)
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}
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return scope.Quote(scope.TableName())
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}
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// CombinedConditionSql return combined condition sql
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func (scope *Scope) CombinedConditionSql() string {
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joinSql := scope.joinsSQL()
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whereSql := scope.whereSQL()
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if scope.Search.raw {
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whereSql = strings.TrimSuffix(strings.TrimPrefix(whereSql, "WHERE ("), ")")
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}
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return joinSql + whereSql + scope.groupSQL() +
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scope.havingSQL() + scope.orderSQL() + scope.limitAndOffsetSQL()
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}
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// Raw set raw sql
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func (scope *Scope) Raw(sql string) *Scope {
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scope.SQL = strings.Replace(sql, "$$$", "?", -1)
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return scope
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}
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// Exec perform generated SQL
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func (scope *Scope) Exec() *Scope {
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defer scope.trace(NowFunc())
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if !scope.HasError() {
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if result, err := scope.SQLDB().Exec(scope.SQL, scope.SQLVars...); scope.Err(err) == nil {
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if count, err := result.RowsAffected(); scope.Err(err) == nil {
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scope.db.RowsAffected = count
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}
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}
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}
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return scope
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}
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// Set set value by name
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func (scope *Scope) Set(name string, value interface{}) *Scope {
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scope.db.InstantSet(name, value)
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return scope
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}
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// Get get setting by name
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func (scope *Scope) Get(name string) (interface{}, bool) {
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return scope.db.Get(name)
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}
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// InstanceID get InstanceID for scope
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func (scope *Scope) InstanceID() string {
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if scope.instanceID == "" {
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scope.instanceID = fmt.Sprintf("%v%v", &scope, &scope.db)
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}
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return scope.instanceID
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}
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// InstanceSet set instance setting for current operation, but not for operations in callbacks, like saving associations callback
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func (scope *Scope) InstanceSet(name string, value interface{}) *Scope {
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return scope.Set(name+scope.InstanceID(), value)
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}
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// InstanceGet get instance setting from current operation
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func (scope *Scope) InstanceGet(name string) (interface{}, bool) {
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return scope.Get(name + scope.InstanceID())
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}
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// Begin start a transaction
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func (scope *Scope) Begin() *Scope {
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if db, ok := scope.SQLDB().(sqlDb); ok {
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if tx, err := db.Begin(); err == nil {
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scope.db.db = interface{}(tx).(SQLCommon)
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scope.InstanceSet("gorm:started_transaction", true)
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}
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}
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return scope
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}
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// CommitOrRollback commit current transaction if no error happened, otherwise will rollback it
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func (scope *Scope) CommitOrRollback() *Scope {
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if _, ok := scope.InstanceGet("gorm:started_transaction"); ok {
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if db, ok := scope.db.db.(sqlTx); ok {
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if scope.HasError() {
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db.Rollback()
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} else {
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scope.Err(db.Commit())
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}
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scope.db.db = scope.db.parent.db
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}
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}
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return scope
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}
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////////////////////////////////////////////////////////////////////////////////
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// Private Methods For *gorm.Scope
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////////////////////////////////////////////////////////////////////////////////
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func (scope *Scope) callMethod(methodName string, reflectValue reflect.Value) {
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// Only get address from non-pointer
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if reflectValue.CanAddr() && reflectValue.Kind() != reflect.Ptr {
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reflectValue = reflectValue.Addr()
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}
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if methodValue := reflectValue.MethodByName(methodName); methodValue.IsValid() {
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switch method := methodValue.Interface().(type) {
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case func():
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method()
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case func(*Scope):
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method(scope)
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case func(*DB):
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newDB := scope.NewDB()
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method(newDB)
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scope.Err(newDB.Error)
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case func() error:
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scope.Err(method())
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case func(*Scope) error:
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scope.Err(method(scope))
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case func(*DB) error:
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newDB := scope.NewDB()
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scope.Err(method(newDB))
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scope.Err(newDB.Error)
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default:
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scope.Err(fmt.Errorf("unsupported function %v", methodName))
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}
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}
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}
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var (
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columnRegexp = regexp.MustCompile("^[a-zA-Z]+(\\.[a-zA-Z]+)*$") // only match string like `name`, `users.name`
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isNumberRegexp = regexp.MustCompile("^\\s*\\d+\\s*$") // match if string is number
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comparisonRegexp = regexp.MustCompile("(?i) (=|<>|>|<|LIKE|IS|IN) ")
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countingQueryRegexp = regexp.MustCompile("(?i)^count(.+)$")
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)
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func (scope *Scope) quoteIfPossible(str string) string {
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if columnRegexp.MatchString(str) {
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return scope.Quote(str)
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}
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return str
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}
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func (scope *Scope) scan(rows *sql.Rows, columns []string, fields []*Field) {
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var (
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ignored interface{}
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values = make([]interface{}, len(columns))
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selectFields []*Field
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selectedColumnsMap = map[string]int{}
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resetFields = map[int]*Field{}
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)
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for index, column := range columns {
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values[index] = &ignored
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selectFields = fields
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if idx, ok := selectedColumnsMap[column]; ok {
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selectFields = selectFields[idx+1:]
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}
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for fieldIndex, field := range selectFields {
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if field.DBName == column {
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if field.Field.Kind() == reflect.Ptr {
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values[index] = field.Field.Addr().Interface()
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} else {
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reflectValue := reflect.New(reflect.PtrTo(field.Struct.Type))
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reflectValue.Elem().Set(field.Field.Addr())
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values[index] = reflectValue.Interface()
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resetFields[index] = field
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}
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selectedColumnsMap[column] = fieldIndex
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if field.IsNormal {
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break
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}
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}
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}
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}
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scope.Err(rows.Scan(values...))
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for index, field := range resetFields {
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if v := reflect.ValueOf(values[index]).Elem().Elem(); v.IsValid() {
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field.Field.Set(v)
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}
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}
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}
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func (scope *Scope) primaryCondition(value interface{}) string {
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return fmt.Sprintf("(%v.%v = %v)", scope.QuotedTableName(), scope.Quote(scope.PrimaryKey()), value)
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}
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func (scope *Scope) buildWhereCondition(clause map[string]interface{}) (str string) {
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switch value := clause["query"].(type) {
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case string:
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if isNumberRegexp.MatchString(value) {
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return scope.primaryCondition(scope.AddToVars(value))
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} else if value != "" {
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str = fmt.Sprintf("(%v)", value)
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}
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case int, int8, int16, int32, int64, uint, uint8, uint16, uint32, uint64, sql.NullInt64:
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return scope.primaryCondition(scope.AddToVars(value))
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case []int, []int8, []int16, []int32, []int64, []uint, []uint8, []uint16, []uint32, []uint64, []string, []interface{}:
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str = fmt.Sprintf("(%v.%v IN (?))", scope.QuotedTableName(), scope.Quote(scope.PrimaryKey()))
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clause["args"] = []interface{}{value}
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case map[string]interface{}:
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var sqls []string
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for key, value := range value {
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if value != nil {
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sqls = append(sqls, fmt.Sprintf("(%v.%v = %v)", scope.QuotedTableName(), scope.Quote(key), scope.AddToVars(value)))
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} else {
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sqls = append(sqls, fmt.Sprintf("(%v.%v IS NULL)", scope.QuotedTableName(), scope.Quote(key)))
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}
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}
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return strings.Join(sqls, " AND ")
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case interface{}:
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var sqls []string
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newScope := scope.New(value)
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for _, field := range newScope.Fields() {
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if !field.IsIgnored && !field.IsBlank {
|
|
sqls = append(sqls, fmt.Sprintf("(%v.%v = %v)", scope.QuotedTableName(), scope.Quote(field.DBName), scope.AddToVars(field.Field.Interface())))
|
|
}
|
|
}
|
|
return strings.Join(sqls, " AND ")
|
|
}
|
|
|
|
args := clause["args"].([]interface{})
|
|
for _, arg := range args {
|
|
switch reflect.ValueOf(arg).Kind() {
|
|
case reflect.Slice: // For where("id in (?)", []int64{1,2})
|
|
if bytes, ok := arg.([]byte); ok {
|
|
str = strings.Replace(str, "?", scope.AddToVars(bytes), 1)
|
|
} else if values := reflect.ValueOf(arg); values.Len() > 0 {
|
|
var tempMarks []string
|
|
for i := 0; i < values.Len(); i++ {
|
|
tempMarks = append(tempMarks, scope.AddToVars(values.Index(i).Interface()))
|
|
}
|
|
str = strings.Replace(str, "?", strings.Join(tempMarks, ","), 1)
|
|
} else {
|
|
str = strings.Replace(str, "?", scope.AddToVars(Expr("NULL")), 1)
|
|
}
|
|
default:
|
|
if valuer, ok := interface{}(arg).(driver.Valuer); ok {
|
|
arg, _ = valuer.Value()
|
|
}
|
|
|
|
str = strings.Replace(str, "?", scope.AddToVars(arg), 1)
|
|
}
|
|
}
|
|
return
|
|
}
|
|
|
|
func (scope *Scope) buildNotCondition(clause map[string]interface{}) (str string) {
|
|
var notEqualSQL string
|
|
var primaryKey = scope.PrimaryKey()
|
|
|
|
switch value := clause["query"].(type) {
|
|
case string:
|
|
if isNumberRegexp.MatchString(value) {
|
|
id, _ := strconv.Atoi(value)
|
|
return fmt.Sprintf("(%v <> %v)", scope.Quote(primaryKey), id)
|
|
} else if comparisonRegexp.MatchString(value) {
|
|
str = fmt.Sprintf(" NOT (%v) ", value)
|
|
notEqualSQL = fmt.Sprintf("NOT (%v)", value)
|
|
} else {
|
|
str = fmt.Sprintf("(%v.%v NOT IN (?))", scope.QuotedTableName(), scope.Quote(value))
|
|
notEqualSQL = fmt.Sprintf("(%v.%v <> ?)", scope.QuotedTableName(), scope.Quote(value))
|
|
}
|
|
case int, int8, int16, int32, int64, uint, uint8, uint16, uint32, uint64, sql.NullInt64:
|
|
return fmt.Sprintf("(%v.%v <> %v)", scope.QuotedTableName(), scope.Quote(primaryKey), value)
|
|
case []int, []int8, []int16, []int32, []int64, []uint, []uint8, []uint16, []uint32, []uint64, []string:
|
|
if reflect.ValueOf(value).Len() > 0 {
|
|
str = fmt.Sprintf("(%v.%v NOT IN (?))", scope.QuotedTableName(), scope.Quote(primaryKey))
|
|
clause["args"] = []interface{}{value}
|
|
} else {
|
|
return ""
|
|
}
|
|
case map[string]interface{}:
|
|
var sqls []string
|
|
for key, value := range value {
|
|
if value != nil {
|
|
sqls = append(sqls, fmt.Sprintf("(%v.%v <> %v)", scope.QuotedTableName(), scope.Quote(key), scope.AddToVars(value)))
|
|
} else {
|
|
sqls = append(sqls, fmt.Sprintf("(%v.%v IS NOT NULL)", scope.QuotedTableName(), scope.Quote(key)))
|
|
}
|
|
}
|
|
return strings.Join(sqls, " AND ")
|
|
case interface{}:
|
|
var sqls []string
|
|
var newScope = scope.New(value)
|
|
for _, field := range newScope.Fields() {
|
|
if !field.IsBlank {
|
|
sqls = append(sqls, fmt.Sprintf("(%v.%v <> %v)", scope.QuotedTableName(), scope.Quote(field.DBName), scope.AddToVars(field.Field.Interface())))
|
|
}
|
|
}
|
|
return strings.Join(sqls, " AND ")
|
|
}
|
|
|
|
args := clause["args"].([]interface{})
|
|
for _, arg := range args {
|
|
switch reflect.ValueOf(arg).Kind() {
|
|
case reflect.Slice: // For where("id in (?)", []int64{1,2})
|
|
if bytes, ok := arg.([]byte); ok {
|
|
str = strings.Replace(str, "?", scope.AddToVars(bytes), 1)
|
|
} else if values := reflect.ValueOf(arg); values.Len() > 0 {
|
|
var tempMarks []string
|
|
for i := 0; i < values.Len(); i++ {
|
|
tempMarks = append(tempMarks, scope.AddToVars(values.Index(i).Interface()))
|
|
}
|
|
str = strings.Replace(str, "?", strings.Join(tempMarks, ","), 1)
|
|
} else {
|
|
str = strings.Replace(str, "?", scope.AddToVars(Expr("NULL")), 1)
|
|
}
|
|
default:
|
|
if scanner, ok := interface{}(arg).(driver.Valuer); ok {
|
|
arg, _ = scanner.Value()
|
|
}
|
|
str = strings.Replace(notEqualSQL, "?", scope.AddToVars(arg), 1)
|
|
}
|
|
}
|
|
return
|
|
}
|
|
|
|
func (scope *Scope) buildSelectQuery(clause map[string]interface{}) (str string) {
|
|
switch value := clause["query"].(type) {
|
|
case string:
|
|
str = value
|
|
case []string:
|
|
str = strings.Join(value, ", ")
|
|
}
|
|
|
|
args := clause["args"].([]interface{})
|
|
for _, arg := range args {
|
|
switch reflect.ValueOf(arg).Kind() {
|
|
case reflect.Slice:
|
|
values := reflect.ValueOf(arg)
|
|
var tempMarks []string
|
|
for i := 0; i < values.Len(); i++ {
|
|
tempMarks = append(tempMarks, scope.AddToVars(values.Index(i).Interface()))
|
|
}
|
|
str = strings.Replace(str, "?", strings.Join(tempMarks, ","), 1)
|
|
default:
|
|
if valuer, ok := interface{}(arg).(driver.Valuer); ok {
|
|
arg, _ = valuer.Value()
|
|
}
|
|
str = strings.Replace(str, "?", scope.AddToVars(arg), 1)
|
|
}
|
|
}
|
|
return
|
|
}
|
|
|
|
func (scope *Scope) whereSQL() (sql string) {
|
|
var (
|
|
quotedTableName = scope.QuotedTableName()
|
|
deletedAtField, hasDeletedAtField = scope.FieldByName("DeletedAt")
|
|
primaryConditions, andConditions, orConditions []string
|
|
)
|
|
|
|
if !scope.Search.Unscoped && hasDeletedAtField && !scope.Search.raw {
|
|
sql := fmt.Sprintf("%v.%v IS NULL", quotedTableName, scope.Quote(deletedAtField.DBName))
|
|
primaryConditions = append(primaryConditions, sql)
|
|
}
|
|
|
|
if !scope.PrimaryKeyZero() {
|
|
for _, field := range scope.PrimaryFields() {
|
|
sql := fmt.Sprintf("%v.%v = %v", quotedTableName, scope.Quote(field.DBName), scope.AddToVars(field.Field.Interface()))
|
|
primaryConditions = append(primaryConditions, sql)
|
|
}
|
|
}
|
|
|
|
for _, clause := range scope.Search.whereConditions {
|
|
if sql := scope.buildWhereCondition(clause); sql != "" {
|
|
andConditions = append(andConditions, sql)
|
|
}
|
|
}
|
|
|
|
for _, clause := range scope.Search.orConditions {
|
|
if sql := scope.buildWhereCondition(clause); sql != "" {
|
|
orConditions = append(orConditions, sql)
|
|
}
|
|
}
|
|
|
|
for _, clause := range scope.Search.notConditions {
|
|
if sql := scope.buildNotCondition(clause); sql != "" {
|
|
andConditions = append(andConditions, sql)
|
|
}
|
|
}
|
|
|
|
orSQL := strings.Join(orConditions, " OR ")
|
|
combinedSQL := strings.Join(andConditions, " AND ")
|
|
if len(combinedSQL) > 0 {
|
|
if len(orSQL) > 0 {
|
|
combinedSQL = combinedSQL + " OR " + orSQL
|
|
}
|
|
} else {
|
|
combinedSQL = orSQL
|
|
}
|
|
|
|
if len(primaryConditions) > 0 {
|
|
sql = "WHERE " + strings.Join(primaryConditions, " AND ")
|
|
if len(combinedSQL) > 0 {
|
|
sql = sql + " AND (" + combinedSQL + ")"
|
|
}
|
|
} else if len(combinedSQL) > 0 {
|
|
sql = "WHERE " + combinedSQL
|
|
}
|
|
return
|
|
}
|
|
|
|
func (scope *Scope) selectSQL() string {
|
|
if len(scope.Search.selects) == 0 {
|
|
if len(scope.Search.joinConditions) > 0 {
|
|
return fmt.Sprintf("%v.*", scope.QuotedTableName())
|
|
}
|
|
return "*"
|
|
}
|
|
return scope.buildSelectQuery(scope.Search.selects)
|
|
}
|
|
|
|
func (scope *Scope) orderSQL() string {
|
|
if len(scope.Search.orders) == 0 || scope.Search.ignoreOrderQuery {
|
|
return ""
|
|
}
|
|
|
|
var orders []string
|
|
for _, order := range scope.Search.orders {
|
|
if str, ok := order.(string); ok {
|
|
orders = append(orders, scope.quoteIfPossible(str))
|
|
} else if expr, ok := order.(*expr); ok {
|
|
exp := expr.expr
|
|
for _, arg := range expr.args {
|
|
exp = strings.Replace(exp, "?", scope.AddToVars(arg), 1)
|
|
}
|
|
orders = append(orders, exp)
|
|
}
|
|
}
|
|
return " ORDER BY " + strings.Join(orders, ",")
|
|
}
|
|
|
|
func (scope *Scope) limitAndOffsetSQL() string {
|
|
return scope.Dialect().LimitAndOffsetSQL(scope.Search.limit, scope.Search.offset)
|
|
}
|
|
|
|
func (scope *Scope) groupSQL() string {
|
|
if len(scope.Search.group) == 0 {
|
|
return ""
|
|
}
|
|
return " GROUP BY " + scope.Search.group
|
|
}
|
|
|
|
func (scope *Scope) havingSQL() string {
|
|
if len(scope.Search.havingConditions) == 0 {
|
|
return ""
|
|
}
|
|
|
|
var andConditions []string
|
|
for _, clause := range scope.Search.havingConditions {
|
|
if sql := scope.buildWhereCondition(clause); sql != "" {
|
|
andConditions = append(andConditions, sql)
|
|
}
|
|
}
|
|
|
|
combinedSQL := strings.Join(andConditions, " AND ")
|
|
if len(combinedSQL) == 0 {
|
|
return ""
|
|
}
|
|
|
|
return " HAVING " + combinedSQL
|
|
}
|
|
|
|
func (scope *Scope) joinsSQL() string {
|
|
var joinConditions []string
|
|
for _, clause := range scope.Search.joinConditions {
|
|
if sql := scope.buildWhereCondition(clause); sql != "" {
|
|
joinConditions = append(joinConditions, strings.TrimSuffix(strings.TrimPrefix(sql, "("), ")"))
|
|
}
|
|
}
|
|
|
|
return strings.Join(joinConditions, " ") + " "
|
|
}
|
|
|
|
func (scope *Scope) prepareQuerySQL() {
|
|
if scope.Search.raw {
|
|
scope.Raw(scope.CombinedConditionSql())
|
|
} else {
|
|
scope.Raw(fmt.Sprintf("SELECT %v FROM %v %v", scope.selectSQL(), scope.QuotedTableName(), scope.CombinedConditionSql()))
|
|
}
|
|
return
|
|
}
|
|
|
|
func (scope *Scope) inlineCondition(values ...interface{}) *Scope {
|
|
if len(values) > 0 {
|
|
scope.Search.Where(values[0], values[1:]...)
|
|
}
|
|
return scope
|
|
}
|
|
|
|
func (scope *Scope) callCallbacks(funcs []*func(s *Scope)) *Scope {
|
|
for _, f := range funcs {
|
|
(*f)(scope)
|
|
if scope.skipLeft {
|
|
break
|
|
}
|
|
}
|
|
return scope
|
|
}
|
|
|
|
func convertInterfaceToMap(values interface{}, withIgnoredField bool) map[string]interface{} {
|
|
var attrs = map[string]interface{}{}
|
|
|
|
switch value := values.(type) {
|
|
case map[string]interface{}:
|
|
return value
|
|
case []interface{}:
|
|
for _, v := range value {
|
|
for key, value := range convertInterfaceToMap(v, withIgnoredField) {
|
|
attrs[key] = value
|
|
}
|
|
}
|
|
case interface{}:
|
|
reflectValue := reflect.ValueOf(values)
|
|
|
|
switch reflectValue.Kind() {
|
|
case reflect.Map:
|
|
for _, key := range reflectValue.MapKeys() {
|
|
attrs[ToDBName(key.Interface().(string))] = reflectValue.MapIndex(key).Interface()
|
|
}
|
|
default:
|
|
for _, field := range (&Scope{Value: values}).Fields() {
|
|
if !field.IsBlank && (withIgnoredField || !field.IsIgnored) {
|
|
attrs[field.DBName] = field.Field.Interface()
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return attrs
|
|
}
|
|
|
|
func (scope *Scope) updatedAttrsWithValues(value interface{}) (results map[string]interface{}, hasUpdate bool) {
|
|
if scope.IndirectValue().Kind() != reflect.Struct {
|
|
return convertInterfaceToMap(value, false), true
|
|
}
|
|
|
|
results = map[string]interface{}{}
|
|
|
|
for key, value := range convertInterfaceToMap(value, true) {
|
|
if field, ok := scope.FieldByName(key); ok && scope.changeableField(field) {
|
|
if _, ok := value.(*expr); ok {
|
|
hasUpdate = true
|
|
results[field.DBName] = value
|
|
} else {
|
|
err := field.Set(value)
|
|
if field.IsNormal {
|
|
hasUpdate = true
|
|
if err == ErrUnaddressable {
|
|
results[field.DBName] = value
|
|
} else {
|
|
results[field.DBName] = field.Field.Interface()
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return
|
|
}
|
|
|
|
func (scope *Scope) row() *sql.Row {
|
|
defer scope.trace(NowFunc())
|
|
|
|
result := &RowQueryResult{}
|
|
scope.InstanceSet("row_query_result", result)
|
|
scope.callCallbacks(scope.db.parent.callbacks.rowQueries)
|
|
|
|
return result.Row
|
|
}
|
|
|
|
func (scope *Scope) rows() (*sql.Rows, error) {
|
|
defer scope.trace(NowFunc())
|
|
|
|
result := &RowsQueryResult{}
|
|
scope.InstanceSet("row_query_result", result)
|
|
scope.callCallbacks(scope.db.parent.callbacks.rowQueries)
|
|
|
|
return result.Rows, result.Error
|
|
}
|
|
|
|
func (scope *Scope) initialize() *Scope {
|
|
for _, clause := range scope.Search.whereConditions {
|
|
scope.updatedAttrsWithValues(clause["query"])
|
|
}
|
|
scope.updatedAttrsWithValues(scope.Search.initAttrs)
|
|
scope.updatedAttrsWithValues(scope.Search.assignAttrs)
|
|
return scope
|
|
}
|
|
|
|
func (scope *Scope) pluck(column string, value interface{}) *Scope {
|
|
dest := reflect.Indirect(reflect.ValueOf(value))
|
|
scope.Search.Select(column)
|
|
if dest.Kind() != reflect.Slice {
|
|
scope.Err(fmt.Errorf("results should be a slice, not %s", dest.Kind()))
|
|
return scope
|
|
}
|
|
|
|
rows, err := scope.rows()
|
|
if scope.Err(err) == nil {
|
|
defer rows.Close()
|
|
for rows.Next() {
|
|
elem := reflect.New(dest.Type().Elem()).Interface()
|
|
scope.Err(rows.Scan(elem))
|
|
dest.Set(reflect.Append(dest, reflect.ValueOf(elem).Elem()))
|
|
}
|
|
|
|
if err := rows.Err(); err != nil {
|
|
scope.Err(err)
|
|
}
|
|
}
|
|
return scope
|
|
}
|
|
|
|
func (scope *Scope) count(value interface{}) *Scope {
|
|
if query, ok := scope.Search.selects["query"]; !ok || !countingQueryRegexp.MatchString(fmt.Sprint(query)) {
|
|
scope.Search.Select("count(*)")
|
|
}
|
|
scope.Search.ignoreOrderQuery = true
|
|
scope.Err(scope.row().Scan(value))
|
|
return scope
|
|
}
|
|
|
|
func (scope *Scope) typeName() string {
|
|
typ := scope.IndirectValue().Type()
|
|
|
|
for typ.Kind() == reflect.Slice || typ.Kind() == reflect.Ptr {
|
|
typ = typ.Elem()
|
|
}
|
|
|
|
return typ.Name()
|
|
}
|
|
|
|
// trace print sql log
|
|
func (scope *Scope) trace(t time.Time) {
|
|
if len(scope.SQL) > 0 {
|
|
scope.db.slog(scope.SQL, t, scope.SQLVars...)
|
|
}
|
|
}
|
|
|
|
func (scope *Scope) changeableField(field *Field) bool {
|
|
if selectAttrs := scope.SelectAttrs(); len(selectAttrs) > 0 {
|
|
for _, attr := range selectAttrs {
|
|
if field.Name == attr || field.DBName == attr {
|
|
return true
|
|
}
|
|
}
|
|
return false
|
|
}
|
|
|
|
for _, attr := range scope.OmitAttrs() {
|
|
if field.Name == attr || field.DBName == attr {
|
|
return false
|
|
}
|
|
}
|
|
|
|
return true
|
|
}
|
|
|
|
func (scope *Scope) shouldSaveAssociations() bool {
|
|
if saveAssociations, ok := scope.Get("gorm:save_associations"); ok {
|
|
if v, ok := saveAssociations.(bool); ok && !v {
|
|
return false
|
|
}
|
|
if v, ok := saveAssociations.(string); ok && (v != "skip") {
|
|
return false
|
|
}
|
|
}
|
|
return true && !scope.HasError()
|
|
}
|
|
|
|
func (scope *Scope) related(value interface{}, foreignKeys ...string) *Scope {
|
|
toScope := scope.db.NewScope(value)
|
|
tx := scope.db.Set("gorm:association:source", scope.Value)
|
|
|
|
for _, foreignKey := range append(foreignKeys, toScope.typeName()+"Id", scope.typeName()+"Id") {
|
|
fromField, _ := scope.FieldByName(foreignKey)
|
|
toField, _ := toScope.FieldByName(foreignKey)
|
|
|
|
if fromField != nil {
|
|
if relationship := fromField.Relationship; relationship != nil {
|
|
if relationship.Kind == "many_to_many" {
|
|
joinTableHandler := relationship.JoinTableHandler
|
|
scope.Err(joinTableHandler.JoinWith(joinTableHandler, tx, scope.Value).Find(value).Error)
|
|
} else if relationship.Kind == "belongs_to" {
|
|
for idx, foreignKey := range relationship.ForeignDBNames {
|
|
if field, ok := scope.FieldByName(foreignKey); ok {
|
|
tx = tx.Where(fmt.Sprintf("%v = ?", scope.Quote(relationship.AssociationForeignDBNames[idx])), field.Field.Interface())
|
|
}
|
|
}
|
|
scope.Err(tx.Find(value).Error)
|
|
} else if relationship.Kind == "has_many" || relationship.Kind == "has_one" {
|
|
for idx, foreignKey := range relationship.ForeignDBNames {
|
|
if field, ok := scope.FieldByName(relationship.AssociationForeignDBNames[idx]); ok {
|
|
tx = tx.Where(fmt.Sprintf("%v = ?", scope.Quote(foreignKey)), field.Field.Interface())
|
|
}
|
|
}
|
|
|
|
if relationship.PolymorphicType != "" {
|
|
tx = tx.Where(fmt.Sprintf("%v = ?", scope.Quote(relationship.PolymorphicDBName)), relationship.PolymorphicValue)
|
|
}
|
|
scope.Err(tx.Find(value).Error)
|
|
}
|
|
} else {
|
|
sql := fmt.Sprintf("%v = ?", scope.Quote(toScope.PrimaryKey()))
|
|
scope.Err(tx.Where(sql, fromField.Field.Interface()).Find(value).Error)
|
|
}
|
|
return scope
|
|
} else if toField != nil {
|
|
sql := fmt.Sprintf("%v = ?", scope.Quote(toField.DBName))
|
|
scope.Err(tx.Where(sql, scope.PrimaryKeyValue()).Find(value).Error)
|
|
return scope
|
|
}
|
|
}
|
|
|
|
scope.Err(fmt.Errorf("invalid association %v", foreignKeys))
|
|
return scope
|
|
}
|
|
|
|
// getTableOptions return the table options string or an empty string if the table options does not exist
|
|
func (scope *Scope) getTableOptions() string {
|
|
tableOptions, ok := scope.Get("gorm:table_options")
|
|
if !ok {
|
|
return ""
|
|
}
|
|
return tableOptions.(string)
|
|
}
|
|
|
|
func (scope *Scope) createJoinTable(field *StructField) {
|
|
if relationship := field.Relationship; relationship != nil && relationship.JoinTableHandler != nil {
|
|
joinTableHandler := relationship.JoinTableHandler
|
|
joinTable := joinTableHandler.Table(scope.db)
|
|
if !scope.Dialect().HasTable(joinTable) {
|
|
toScope := &Scope{Value: reflect.New(field.Struct.Type).Interface()}
|
|
|
|
var sqlTypes, primaryKeys []string
|
|
for idx, fieldName := range relationship.ForeignFieldNames {
|
|
if field, ok := scope.FieldByName(fieldName); ok {
|
|
foreignKeyStruct := field.clone()
|
|
foreignKeyStruct.IsPrimaryKey = false
|
|
foreignKeyStruct.TagSettings["IS_JOINTABLE_FOREIGNKEY"] = "true"
|
|
delete(foreignKeyStruct.TagSettings, "AUTO_INCREMENT")
|
|
sqlTypes = append(sqlTypes, scope.Quote(relationship.ForeignDBNames[idx])+" "+scope.Dialect().DataTypeOf(foreignKeyStruct))
|
|
primaryKeys = append(primaryKeys, scope.Quote(relationship.ForeignDBNames[idx]))
|
|
}
|
|
}
|
|
|
|
for idx, fieldName := range relationship.AssociationForeignFieldNames {
|
|
if field, ok := toScope.FieldByName(fieldName); ok {
|
|
foreignKeyStruct := field.clone()
|
|
foreignKeyStruct.IsPrimaryKey = false
|
|
foreignKeyStruct.TagSettings["IS_JOINTABLE_FOREIGNKEY"] = "true"
|
|
delete(foreignKeyStruct.TagSettings, "AUTO_INCREMENT")
|
|
sqlTypes = append(sqlTypes, scope.Quote(relationship.AssociationForeignDBNames[idx])+" "+scope.Dialect().DataTypeOf(foreignKeyStruct))
|
|
primaryKeys = append(primaryKeys, scope.Quote(relationship.AssociationForeignDBNames[idx]))
|
|
}
|
|
}
|
|
|
|
scope.Err(scope.NewDB().Exec(fmt.Sprintf("CREATE TABLE %v (%v, PRIMARY KEY (%v)) %s", scope.Quote(joinTable), strings.Join(sqlTypes, ","), strings.Join(primaryKeys, ","), scope.getTableOptions())).Error)
|
|
}
|
|
scope.NewDB().Table(joinTable).AutoMigrate(joinTableHandler)
|
|
}
|
|
}
|
|
|
|
func (scope *Scope) createTable() *Scope {
|
|
var tags []string
|
|
var primaryKeys []string
|
|
var primaryKeyInColumnType = false
|
|
for _, field := range scope.GetModelStruct().StructFields {
|
|
if field.IsNormal {
|
|
sqlTag := scope.Dialect().DataTypeOf(field)
|
|
|
|
// Check if the primary key constraint was specified as
|
|
// part of the column type. If so, we can only support
|
|
// one column as the primary key.
|
|
if strings.Contains(strings.ToLower(sqlTag), "primary key") {
|
|
primaryKeyInColumnType = true
|
|
}
|
|
|
|
tags = append(tags, scope.Quote(field.DBName)+" "+sqlTag)
|
|
}
|
|
|
|
if field.IsPrimaryKey {
|
|
primaryKeys = append(primaryKeys, scope.Quote(field.DBName))
|
|
}
|
|
scope.createJoinTable(field)
|
|
}
|
|
|
|
var primaryKeyStr string
|
|
if len(primaryKeys) > 0 && !primaryKeyInColumnType {
|
|
primaryKeyStr = fmt.Sprintf(", PRIMARY KEY (%v)", strings.Join(primaryKeys, ","))
|
|
}
|
|
|
|
scope.Raw(fmt.Sprintf("CREATE TABLE %v (%v %v) %s", scope.QuotedTableName(), strings.Join(tags, ","), primaryKeyStr, scope.getTableOptions())).Exec()
|
|
|
|
scope.autoIndex()
|
|
return scope
|
|
}
|
|
|
|
func (scope *Scope) dropTable() *Scope {
|
|
scope.Raw(fmt.Sprintf("DROP TABLE %v", scope.QuotedTableName())).Exec()
|
|
return scope
|
|
}
|
|
|
|
func (scope *Scope) modifyColumn(column string, typ string) {
|
|
scope.Raw(fmt.Sprintf("ALTER TABLE %v MODIFY %v %v", scope.QuotedTableName(), scope.Quote(column), typ)).Exec()
|
|
}
|
|
|
|
func (scope *Scope) dropColumn(column string) {
|
|
scope.Raw(fmt.Sprintf("ALTER TABLE %v DROP COLUMN %v", scope.QuotedTableName(), scope.Quote(column))).Exec()
|
|
}
|
|
|
|
func (scope *Scope) addIndex(unique bool, indexName string, column ...string) {
|
|
if scope.Dialect().HasIndex(scope.TableName(), indexName) {
|
|
return
|
|
}
|
|
|
|
var columns []string
|
|
for _, name := range column {
|
|
columns = append(columns, scope.quoteIfPossible(name))
|
|
}
|
|
|
|
sqlCreate := "CREATE INDEX"
|
|
if unique {
|
|
sqlCreate = "CREATE UNIQUE INDEX"
|
|
}
|
|
|
|
scope.Raw(fmt.Sprintf("%s %v ON %v(%v) %v", sqlCreate, indexName, scope.QuotedTableName(), strings.Join(columns, ", "), scope.whereSQL())).Exec()
|
|
}
|
|
|
|
func (scope *Scope) addForeignKey(field string, dest string, onDelete string, onUpdate string) {
|
|
keyName := scope.Dialect().BuildForeignKeyName(scope.TableName(), field, dest)
|
|
|
|
if scope.Dialect().HasForeignKey(scope.TableName(), keyName) {
|
|
return
|
|
}
|
|
var query = `ALTER TABLE %s ADD CONSTRAINT %s FOREIGN KEY (%s) REFERENCES %s ON DELETE %s ON UPDATE %s;`
|
|
scope.Raw(fmt.Sprintf(query, scope.QuotedTableName(), scope.quoteIfPossible(keyName), scope.quoteIfPossible(field), dest, onDelete, onUpdate)).Exec()
|
|
}
|
|
|
|
func (scope *Scope) removeIndex(indexName string) {
|
|
scope.Dialect().RemoveIndex(scope.TableName(), indexName)
|
|
}
|
|
|
|
func (scope *Scope) autoMigrate() *Scope {
|
|
tableName := scope.TableName()
|
|
quotedTableName := scope.QuotedTableName()
|
|
|
|
if !scope.Dialect().HasTable(tableName) {
|
|
scope.createTable()
|
|
} else {
|
|
for _, field := range scope.GetModelStruct().StructFields {
|
|
if !scope.Dialect().HasColumn(tableName, field.DBName) {
|
|
if field.IsNormal {
|
|
sqlTag := scope.Dialect().DataTypeOf(field)
|
|
scope.Raw(fmt.Sprintf("ALTER TABLE %v ADD %v %v;", quotedTableName, scope.Quote(field.DBName), sqlTag)).Exec()
|
|
}
|
|
}
|
|
scope.createJoinTable(field)
|
|
}
|
|
scope.autoIndex()
|
|
}
|
|
return scope
|
|
}
|
|
|
|
func (scope *Scope) autoIndex() *Scope {
|
|
var indexes = map[string][]string{}
|
|
var uniqueIndexes = map[string][]string{}
|
|
|
|
for _, field := range scope.GetStructFields() {
|
|
if name, ok := field.TagSettings["INDEX"]; ok {
|
|
names := strings.Split(name, ",")
|
|
|
|
for _, name := range names {
|
|
if name == "INDEX" || name == "" {
|
|
name = fmt.Sprintf("idx_%v_%v", scope.TableName(), field.DBName)
|
|
}
|
|
indexes[name] = append(indexes[name], field.DBName)
|
|
}
|
|
}
|
|
|
|
if name, ok := field.TagSettings["UNIQUE_INDEX"]; ok {
|
|
names := strings.Split(name, ",")
|
|
|
|
for _, name := range names {
|
|
if name == "UNIQUE_INDEX" || name == "" {
|
|
name = fmt.Sprintf("uix_%v_%v", scope.TableName(), field.DBName)
|
|
}
|
|
uniqueIndexes[name] = append(uniqueIndexes[name], field.DBName)
|
|
}
|
|
}
|
|
}
|
|
|
|
for name, columns := range indexes {
|
|
scope.NewDB().Model(scope.Value).AddIndex(name, columns...)
|
|
}
|
|
|
|
for name, columns := range uniqueIndexes {
|
|
scope.NewDB().Model(scope.Value).AddUniqueIndex(name, columns...)
|
|
}
|
|
|
|
return scope
|
|
}
|
|
|
|
func (scope *Scope) getColumnAsArray(columns []string, values ...interface{}) (results [][]interface{}) {
|
|
for _, value := range values {
|
|
indirectValue := indirect(reflect.ValueOf(value))
|
|
|
|
switch indirectValue.Kind() {
|
|
case reflect.Slice:
|
|
for i := 0; i < indirectValue.Len(); i++ {
|
|
var result []interface{}
|
|
var object = indirect(indirectValue.Index(i))
|
|
var hasValue = false
|
|
for _, column := range columns {
|
|
field := object.FieldByName(column)
|
|
if hasValue || !isBlank(field) {
|
|
hasValue = true
|
|
}
|
|
result = append(result, field.Interface())
|
|
}
|
|
|
|
if hasValue {
|
|
results = append(results, result)
|
|
}
|
|
}
|
|
case reflect.Struct:
|
|
var result []interface{}
|
|
var hasValue = false
|
|
for _, column := range columns {
|
|
field := indirectValue.FieldByName(column)
|
|
if hasValue || !isBlank(field) {
|
|
hasValue = true
|
|
}
|
|
result = append(result, field.Interface())
|
|
}
|
|
|
|
if hasValue {
|
|
results = append(results, result)
|
|
}
|
|
}
|
|
}
|
|
|
|
return
|
|
}
|
|
|
|
func (scope *Scope) getColumnAsScope(column string) *Scope {
|
|
indirectScopeValue := scope.IndirectValue()
|
|
|
|
switch indirectScopeValue.Kind() {
|
|
case reflect.Slice:
|
|
if fieldStruct, ok := scope.GetModelStruct().ModelType.FieldByName(column); ok {
|
|
fieldType := fieldStruct.Type
|
|
if fieldType.Kind() == reflect.Slice || fieldType.Kind() == reflect.Ptr {
|
|
fieldType = fieldType.Elem()
|
|
}
|
|
|
|
resultsMap := map[interface{}]bool{}
|
|
results := reflect.New(reflect.SliceOf(reflect.PtrTo(fieldType))).Elem()
|
|
|
|
for i := 0; i < indirectScopeValue.Len(); i++ {
|
|
result := indirect(indirect(indirectScopeValue.Index(i)).FieldByName(column))
|
|
|
|
if result.Kind() == reflect.Slice {
|
|
for j := 0; j < result.Len(); j++ {
|
|
if elem := result.Index(j); elem.CanAddr() && resultsMap[elem.Addr()] != true {
|
|
resultsMap[elem.Addr()] = true
|
|
results = reflect.Append(results, elem.Addr())
|
|
}
|
|
}
|
|
} else if result.CanAddr() && resultsMap[result.Addr()] != true {
|
|
resultsMap[result.Addr()] = true
|
|
results = reflect.Append(results, result.Addr())
|
|
}
|
|
}
|
|
return scope.New(results.Interface())
|
|
}
|
|
case reflect.Struct:
|
|
if field := indirectScopeValue.FieldByName(column); field.CanAddr() {
|
|
return scope.New(field.Addr().Interface())
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (scope *Scope) hasConditions() bool {
|
|
return !scope.PrimaryKeyZero() ||
|
|
len(scope.Search.whereConditions) > 0 ||
|
|
len(scope.Search.orConditions) > 0 ||
|
|
len(scope.Search.notConditions) > 0
|
|
}
|