Simple and Powerful ORM for Go, support mysql,postgres,tidb,sqlite3,sqlite,mssql,oracle,cockroach https://xorm.io
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 

1004 lines
28 KiB

// Copyright 2015 The Xorm Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package statements
import (
"database/sql/driver"
"errors"
"fmt"
"reflect"
"strings"
"time"
"xorm.io/builder"
"xorm.io/xorm/contexts"
"xorm.io/xorm/convert"
"xorm.io/xorm/dialects"
"xorm.io/xorm/internal/json"
"xorm.io/xorm/internal/utils"
"xorm.io/xorm/schemas"
"xorm.io/xorm/tags"
)
var (
// ErrConditionType condition type unsupported
ErrConditionType = errors.New("Unsupported condition type")
// ErrUnSupportedSQLType parameter of SQL is not supported
ErrUnSupportedSQLType = errors.New("Unsupported sql type")
// ErrUnSupportedType unsupported error
ErrUnSupportedType = errors.New("Unsupported type error")
// ErrTableNotFound table not found error
ErrTableNotFound = errors.New("Table not found")
)
// Statement save all the sql info for executing SQL
type Statement struct {
RefTable *schemas.Table
dialect dialects.Dialect
defaultTimeZone *time.Location
tagParser *tags.Parser
Start int
LimitN *int
idParam schemas.PK
OrderStr string
JoinStr string
joinArgs []interface{}
GroupByStr string
HavingStr string
SelectStr string
useAllCols bool
AltTableName string
tableName string
RawSQL string
RawParams []interface{}
UseCascade bool
UseAutoJoin bool
StoreEngine string
Charset string
UseCache bool
UseAutoTime bool
NoAutoCondition bool
IsDistinct bool
IsForUpdate bool
TableAlias string
allUseBool bool
CheckVersion bool
unscoped bool
ColumnMap columnMap
OmitColumnMap columnMap
MustColumnMap map[string]bool
NullableMap map[string]bool
IncrColumns exprParams
DecrColumns exprParams
ExprColumns exprParams
cond builder.Cond
BufferSize int
Context contexts.ContextCache
LastError error
}
// NewStatement creates a new statement
func NewStatement(dialect dialects.Dialect, tagParser *tags.Parser, defaultTimeZone *time.Location) *Statement {
statement := &Statement{
dialect: dialect,
tagParser: tagParser,
defaultTimeZone: defaultTimeZone,
}
statement.Reset()
return statement
}
// SetTableName set table name
func (statement *Statement) SetTableName(tableName string) {
statement.tableName = tableName
}
// GenRawSQL generates correct raw sql
func (statement *Statement) GenRawSQL() string {
return statement.ReplaceQuote(statement.RawSQL)
}
// GenCondSQL generates condition SQL
func (statement *Statement) GenCondSQL(condOrBuilder interface{}) (string, []interface{}, error) {
condSQL, condArgs, err := builder.ToSQL(condOrBuilder)
if err != nil {
return "", nil, err
}
return statement.ReplaceQuote(condSQL), condArgs, nil
}
// ReplaceQuote replace sql key words with quote
func (statement *Statement) ReplaceQuote(sql string) string {
if sql == "" || statement.dialect.URI().DBType == schemas.MYSQL ||
statement.dialect.URI().DBType == schemas.SQLITE {
return sql
}
return statement.dialect.Quoter().Replace(sql)
}
// SetContextCache sets context cache
func (statement *Statement) SetContextCache(ctxCache contexts.ContextCache) {
statement.Context = ctxCache
}
// Reset reset all the statement's fields
func (statement *Statement) Reset() {
statement.RefTable = nil
statement.Start = 0
statement.LimitN = nil
statement.OrderStr = ""
statement.UseCascade = true
statement.JoinStr = ""
statement.joinArgs = make([]interface{}, 0)
statement.GroupByStr = ""
statement.HavingStr = ""
statement.ColumnMap = columnMap{}
statement.OmitColumnMap = columnMap{}
statement.AltTableName = ""
statement.tableName = ""
statement.idParam = nil
statement.RawSQL = ""
statement.RawParams = make([]interface{}, 0)
statement.UseCache = true
statement.UseAutoTime = true
statement.NoAutoCondition = false
statement.IsDistinct = false
statement.IsForUpdate = false
statement.TableAlias = ""
statement.SelectStr = ""
statement.allUseBool = false
statement.useAllCols = false
statement.MustColumnMap = make(map[string]bool)
statement.NullableMap = make(map[string]bool)
statement.CheckVersion = true
statement.unscoped = false
statement.IncrColumns = exprParams{}
statement.DecrColumns = exprParams{}
statement.ExprColumns = exprParams{}
statement.cond = builder.NewCond()
statement.BufferSize = 0
statement.Context = nil
statement.LastError = nil
}
// SetNoAutoCondition if you do not want convert bean's field as query condition, then use this function
func (statement *Statement) SetNoAutoCondition(no ...bool) *Statement {
statement.NoAutoCondition = true
if len(no) > 0 {
statement.NoAutoCondition = no[0]
}
return statement
}
// Alias set the table alias
func (statement *Statement) Alias(alias string) *Statement {
statement.TableAlias = alias
return statement
}
// SQL adds raw sql statement
func (statement *Statement) SQL(query interface{}, args ...interface{}) *Statement {
switch query.(type) {
case (*builder.Builder):
var err error
statement.RawSQL, statement.RawParams, err = query.(*builder.Builder).ToSQL()
if err != nil {
statement.LastError = err
}
case string:
statement.RawSQL = query.(string)
statement.RawParams = args
default:
statement.LastError = ErrUnSupportedSQLType
}
return statement
}
// Where add Where statement
func (statement *Statement) Where(query interface{}, args ...interface{}) *Statement {
return statement.And(query, args...)
}
func (statement *Statement) quote(s string) string {
return statement.dialect.Quoter().Quote(s)
}
// And add Where & and statement
func (statement *Statement) And(query interface{}, args ...interface{}) *Statement {
switch query.(type) {
case string:
cond := builder.Expr(query.(string), args...)
statement.cond = statement.cond.And(cond)
case map[string]interface{}:
queryMap := query.(map[string]interface{})
newMap := make(map[string]interface{})
for k, v := range queryMap {
newMap[statement.quote(k)] = v
}
statement.cond = statement.cond.And(builder.Eq(newMap))
case builder.Cond:
cond := query.(builder.Cond)
statement.cond = statement.cond.And(cond)
for _, v := range args {
if vv, ok := v.(builder.Cond); ok {
statement.cond = statement.cond.And(vv)
}
}
default:
statement.LastError = ErrConditionType
}
return statement
}
// Or add Where & Or statement
func (statement *Statement) Or(query interface{}, args ...interface{}) *Statement {
switch query.(type) {
case string:
cond := builder.Expr(query.(string), args...)
statement.cond = statement.cond.Or(cond)
case map[string]interface{}:
cond := builder.Eq(query.(map[string]interface{}))
statement.cond = statement.cond.Or(cond)
case builder.Cond:
cond := query.(builder.Cond)
statement.cond = statement.cond.Or(cond)
for _, v := range args {
if vv, ok := v.(builder.Cond); ok {
statement.cond = statement.cond.Or(vv)
}
}
default:
// TODO: not support condition type
}
return statement
}
// In generate "Where column IN (?) " statement
func (statement *Statement) In(column string, args ...interface{}) *Statement {
in := builder.In(statement.quote(column), args...)
statement.cond = statement.cond.And(in)
return statement
}
// NotIn generate "Where column NOT IN (?) " statement
func (statement *Statement) NotIn(column string, args ...interface{}) *Statement {
notIn := builder.NotIn(statement.quote(column), args...)
statement.cond = statement.cond.And(notIn)
return statement
}
// SetRefValue set ref value
func (statement *Statement) SetRefValue(v reflect.Value) error {
var err error
statement.RefTable, err = statement.tagParser.ParseWithCache(reflect.Indirect(v))
if err != nil {
return err
}
statement.tableName = dialects.FullTableName(statement.dialect, statement.tagParser.GetTableMapper(), v, true)
return nil
}
func rValue(bean interface{}) reflect.Value {
return reflect.Indirect(reflect.ValueOf(bean))
}
// SetRefBean set ref bean
func (statement *Statement) SetRefBean(bean interface{}) error {
var err error
statement.RefTable, err = statement.tagParser.ParseWithCache(rValue(bean))
if err != nil {
return err
}
statement.tableName = dialects.FullTableName(statement.dialect, statement.tagParser.GetTableMapper(), bean, true)
return nil
}
func (statement *Statement) needTableName() bool {
return len(statement.JoinStr) > 0
}
func (statement *Statement) colName(col *schemas.Column, tableName string) string {
if statement.needTableName() {
var nm = tableName
if len(statement.TableAlias) > 0 {
nm = statement.TableAlias
}
return statement.quote(nm) + "." + statement.quote(col.Name)
}
return statement.quote(col.Name)
}
// TableName return current tableName
func (statement *Statement) TableName() string {
if statement.AltTableName != "" {
return statement.AltTableName
}
return statement.tableName
}
// Incr Generate "Update ... Set column = column + arg" statement
func (statement *Statement) Incr(column string, arg ...interface{}) *Statement {
if len(arg) > 0 {
statement.IncrColumns.addParam(column, arg[0])
} else {
statement.IncrColumns.addParam(column, 1)
}
return statement
}
// Decr Generate "Update ... Set column = column - arg" statement
func (statement *Statement) Decr(column string, arg ...interface{}) *Statement {
if len(arg) > 0 {
statement.DecrColumns.addParam(column, arg[0])
} else {
statement.DecrColumns.addParam(column, 1)
}
return statement
}
// SetExpr Generate "Update ... Set column = {expression}" statement
func (statement *Statement) SetExpr(column string, expression interface{}) *Statement {
if e, ok := expression.(string); ok {
statement.ExprColumns.addParam(column, statement.dialect.Quoter().Replace(e))
} else {
statement.ExprColumns.addParam(column, expression)
}
return statement
}
// Distinct generates "DISTINCT col1, col2 " statement
func (statement *Statement) Distinct(columns ...string) *Statement {
statement.IsDistinct = true
statement.Cols(columns...)
return statement
}
// ForUpdate generates "SELECT ... FOR UPDATE" statement
func (statement *Statement) ForUpdate() *Statement {
statement.IsForUpdate = true
return statement
}
// Select replace select
func (statement *Statement) Select(str string) *Statement {
statement.SelectStr = statement.ReplaceQuote(str)
return statement
}
func col2NewCols(columns ...string) []string {
newColumns := make([]string, 0, len(columns))
for _, col := range columns {
col = strings.Replace(col, "`", "", -1)
col = strings.Replace(col, `"`, "", -1)
ccols := strings.Split(col, ",")
for _, c := range ccols {
newColumns = append(newColumns, strings.TrimSpace(c))
}
}
return newColumns
}
// Cols generate "col1, col2" statement
func (statement *Statement) Cols(columns ...string) *Statement {
cols := col2NewCols(columns...)
for _, nc := range cols {
statement.ColumnMap.Add(nc)
}
return statement
}
// ColumnStr returns column string
func (statement *Statement) ColumnStr() string {
return statement.dialect.Quoter().Join(statement.ColumnMap, ", ")
}
// AllCols update use only: update all columns
func (statement *Statement) AllCols() *Statement {
statement.useAllCols = true
return statement
}
// MustCols update use only: must update columns
func (statement *Statement) MustCols(columns ...string) *Statement {
newColumns := col2NewCols(columns...)
for _, nc := range newColumns {
statement.MustColumnMap[strings.ToLower(nc)] = true
}
return statement
}
// UseBool indicates that use bool fields as update contents and query contiditions
func (statement *Statement) UseBool(columns ...string) *Statement {
if len(columns) > 0 {
statement.MustCols(columns...)
} else {
statement.allUseBool = true
}
return statement
}
// Omit do not use the columns
func (statement *Statement) Omit(columns ...string) {
newColumns := col2NewCols(columns...)
for _, nc := range newColumns {
statement.OmitColumnMap = append(statement.OmitColumnMap, nc)
}
}
// Nullable Update use only: update columns to null when value is nullable and zero-value
func (statement *Statement) Nullable(columns ...string) {
newColumns := col2NewCols(columns...)
for _, nc := range newColumns {
statement.NullableMap[strings.ToLower(nc)] = true
}
}
// Top generate LIMIT limit statement
func (statement *Statement) Top(limit int) *Statement {
statement.Limit(limit)
return statement
}
// Limit generate LIMIT start, limit statement
func (statement *Statement) Limit(limit int, start ...int) *Statement {
statement.LimitN = &limit
if len(start) > 0 {
statement.Start = start[0]
}
return statement
}
// OrderBy generate "Order By order" statement
func (statement *Statement) OrderBy(order string) *Statement {
if len(statement.OrderStr) > 0 {
statement.OrderStr += ", "
}
statement.OrderStr += statement.ReplaceQuote(order)
return statement
}
// Desc generate `ORDER BY xx DESC`
func (statement *Statement) Desc(colNames ...string) *Statement {
var buf strings.Builder
if len(statement.OrderStr) > 0 {
fmt.Fprint(&buf, statement.OrderStr, ", ")
}
for i, col := range colNames {
if i > 0 {
fmt.Fprint(&buf, ", ")
}
statement.dialect.Quoter().QuoteTo(&buf, col)
fmt.Fprint(&buf, " DESC")
}
statement.OrderStr = buf.String()
return statement
}
// Asc provide asc order by query condition, the input parameters are columns.
func (statement *Statement) Asc(colNames ...string) *Statement {
var buf strings.Builder
if len(statement.OrderStr) > 0 {
fmt.Fprint(&buf, statement.OrderStr, ", ")
}
for i, col := range colNames {
if i > 0 {
fmt.Fprint(&buf, ", ")
}
statement.dialect.Quoter().QuoteTo(&buf, col)
fmt.Fprint(&buf, " ASC")
}
statement.OrderStr = buf.String()
return statement
}
// Conds returns condtions
func (statement *Statement) Conds() builder.Cond {
return statement.cond
}
// SetTable tempororily set table name, the parameter could be a string or a pointer of struct
func (statement *Statement) SetTable(tableNameOrBean interface{}) error {
v := rValue(tableNameOrBean)
t := v.Type()
if t.Kind() == reflect.Struct {
var err error
statement.RefTable, err = statement.tagParser.ParseWithCache(v)
if err != nil {
return err
}
}
statement.AltTableName = dialects.FullTableName(statement.dialect, statement.tagParser.GetTableMapper(), tableNameOrBean, true)
return nil
}
// Join The joinOP should be one of INNER, LEFT OUTER, CROSS etc - this will be prepended to JOIN
func (statement *Statement) Join(joinOP string, tablename interface{}, condition string, args ...interface{}) *Statement {
var buf strings.Builder
if len(statement.JoinStr) > 0 {
fmt.Fprintf(&buf, "%v %v JOIN ", statement.JoinStr, joinOP)
} else {
fmt.Fprintf(&buf, "%v JOIN ", joinOP)
}
switch tp := tablename.(type) {
case builder.Builder:
subSQL, subQueryArgs, err := tp.ToSQL()
if err != nil {
statement.LastError = err
return statement
}
fields := strings.Split(tp.TableName(), ".")
aliasName := statement.dialect.Quoter().Trim(fields[len(fields)-1])
aliasName = schemas.CommonQuoter.Trim(aliasName)
fmt.Fprintf(&buf, "(%s) %s ON %v", statement.ReplaceQuote(subSQL), aliasName, statement.ReplaceQuote(condition))
statement.joinArgs = append(statement.joinArgs, subQueryArgs...)
case *builder.Builder:
subSQL, subQueryArgs, err := tp.ToSQL()
if err != nil {
statement.LastError = err
return statement
}
fields := strings.Split(tp.TableName(), ".")
aliasName := statement.dialect.Quoter().Trim(fields[len(fields)-1])
aliasName = schemas.CommonQuoter.Trim(aliasName)
fmt.Fprintf(&buf, "(%s) %s ON %v", statement.ReplaceQuote(subSQL), aliasName, statement.ReplaceQuote(condition))
statement.joinArgs = append(statement.joinArgs, subQueryArgs...)
default:
tbName := dialects.FullTableName(statement.dialect, statement.tagParser.GetTableMapper(), tablename, true)
if !utils.IsSubQuery(tbName) {
var buf strings.Builder
statement.dialect.Quoter().QuoteTo(&buf, tbName)
tbName = buf.String()
}
fmt.Fprintf(&buf, "%s ON %v", tbName, statement.ReplaceQuote(condition))
}
statement.JoinStr = buf.String()
statement.joinArgs = append(statement.joinArgs, args...)
return statement
}
// tbNameNoSchema get some table's table name
func (statement *Statement) tbNameNoSchema(table *schemas.Table) string {
if len(statement.AltTableName) > 0 {
return statement.AltTableName
}
return table.Name
}
// GroupBy generate "Group By keys" statement
func (statement *Statement) GroupBy(keys string) *Statement {
statement.GroupByStr = statement.ReplaceQuote(keys)
return statement
}
// Having generate "Having conditions" statement
func (statement *Statement) Having(conditions string) *Statement {
statement.HavingStr = fmt.Sprintf("HAVING %v", statement.ReplaceQuote(conditions))
return statement
}
// SetUnscoped always disable struct tag "deleted"
func (statement *Statement) SetUnscoped() *Statement {
statement.unscoped = true
return statement
}
// GetUnscoped return true if it's unscoped
func (statement *Statement) GetUnscoped() bool {
return statement.unscoped
}
func (statement *Statement) genColumnStr() string {
if statement.RefTable == nil {
return ""
}
var buf strings.Builder
columns := statement.RefTable.Columns()
for _, col := range columns {
if statement.OmitColumnMap.Contain(col.Name) {
continue
}
if len(statement.ColumnMap) > 0 && !statement.ColumnMap.Contain(col.Name) {
continue
}
if col.MapType == schemas.ONLYTODB {
continue
}
if buf.Len() != 0 {
buf.WriteString(", ")
}
if statement.JoinStr != "" {
if statement.TableAlias != "" {
buf.WriteString(statement.TableAlias)
} else {
buf.WriteString(statement.TableName())
}
buf.WriteString(".")
}
statement.dialect.Quoter().QuoteTo(&buf, col.Name)
}
return buf.String()
}
// GenCreateTableSQL generated create table SQL
func (statement *Statement) GenCreateTableSQL() []string {
statement.RefTable.StoreEngine = statement.StoreEngine
statement.RefTable.Charset = statement.Charset
s, _ := statement.dialect.CreateTableSQL(statement.RefTable, statement.TableName())
return s
}
// GenIndexSQL generated create index SQL
func (statement *Statement) GenIndexSQL() []string {
var sqls []string
tbName := statement.TableName()
for _, index := range statement.RefTable.Indexes {
if index.Type == schemas.IndexType {
sql := statement.dialect.CreateIndexSQL(tbName, index)
sqls = append(sqls, sql)
}
}
return sqls
}
func uniqueName(tableName, uqeName string) string {
return fmt.Sprintf("UQE_%v_%v", tableName, uqeName)
}
// GenUniqueSQL generates unique SQL
func (statement *Statement) GenUniqueSQL() []string {
var sqls []string
tbName := statement.TableName()
for _, index := range statement.RefTable.Indexes {
if index.Type == schemas.UniqueType {
sql := statement.dialect.CreateIndexSQL(tbName, index)
sqls = append(sqls, sql)
}
}
return sqls
}
// GenDelIndexSQL generate delete index SQL
func (statement *Statement) GenDelIndexSQL() []string {
var sqls []string
tbName := statement.TableName()
idx := strings.Index(tbName, ".")
if idx > -1 {
tbName = tbName[idx+1:]
}
for _, index := range statement.RefTable.Indexes {
sqls = append(sqls, statement.dialect.DropIndexSQL(tbName, index))
}
return sqls
}
func (statement *Statement) buildConds2(table *schemas.Table, bean interface{},
includeVersion bool, includeUpdated bool, includeNil bool,
includeAutoIncr bool, allUseBool bool, useAllCols bool, unscoped bool,
mustColumnMap map[string]bool, tableName, aliasName string, addedTableName bool) (builder.Cond, error) {
var conds []builder.Cond
for _, col := range table.Columns() {
if !includeVersion && col.IsVersion {
continue
}
if !includeUpdated && col.IsUpdated {
continue
}
if !includeAutoIncr && col.IsAutoIncrement {
continue
}
if statement.dialect.URI().DBType == schemas.MSSQL && (col.SQLType.Name == schemas.Text ||
col.SQLType.IsBlob() || col.SQLType.Name == schemas.TimeStampz) {
continue
}
if col.IsJSON {
continue
}
var colName string
if addedTableName {
var nm = tableName
if len(aliasName) > 0 {
nm = aliasName
}
colName = statement.quote(nm) + "." + statement.quote(col.Name)
} else {
colName = statement.quote(col.Name)
}
fieldValuePtr, err := col.ValueOf(bean)
if err != nil {
if !strings.Contains(err.Error(), "is not valid") {
//engine.logger.Warn(err)
}
continue
}
if col.IsDeleted && !unscoped { // tag "deleted" is enabled
conds = append(conds, statement.CondDeleted(col))
}
fieldValue := *fieldValuePtr
if fieldValue.Interface() == nil {
continue
}
fieldType := reflect.TypeOf(fieldValue.Interface())
requiredField := useAllCols
if b, ok := getFlagForColumn(mustColumnMap, col); ok {
if b {
requiredField = true
} else {
continue
}
}
if fieldType.Kind() == reflect.Ptr {
if fieldValue.IsNil() {
if includeNil {
conds = append(conds, builder.Eq{colName: nil})
}
continue
} else if !fieldValue.IsValid() {
continue
} else {
// dereference ptr type to instance type
fieldValue = fieldValue.Elem()
fieldType = reflect.TypeOf(fieldValue.Interface())
requiredField = true
}
}
var val interface{}
switch fieldType.Kind() {
case reflect.Bool:
if allUseBool || requiredField {
val = fieldValue.Interface()
} else {
// if a bool in a struct, it will not be as a condition because it default is false,
// please use Where() instead
continue
}
case reflect.String:
if !requiredField && fieldValue.String() == "" {
continue
}
// for MyString, should convert to string or panic
if fieldType.String() != reflect.String.String() {
val = fieldValue.String()
} else {
val = fieldValue.Interface()
}
case reflect.Int8, reflect.Int16, reflect.Int, reflect.Int32, reflect.Int64:
if !requiredField && fieldValue.Int() == 0 {
continue
}
val = fieldValue.Interface()
case reflect.Float32, reflect.Float64:
if !requiredField && fieldValue.Float() == 0.0 {
continue
}
val = fieldValue.Interface()
case reflect.Uint8, reflect.Uint16, reflect.Uint, reflect.Uint32, reflect.Uint64:
if !requiredField && fieldValue.Uint() == 0 {
continue
}
val = fieldValue.Interface()
case reflect.Struct:
if fieldType.ConvertibleTo(schemas.TimeType) {
t := fieldValue.Convert(schemas.TimeType).Interface().(time.Time)
if !requiredField && (t.IsZero() || !fieldValue.IsValid()) {
continue
}
val = dialects.FormatColumnTime(statement.dialect, statement.defaultTimeZone, col, t)
} else if _, ok := reflect.New(fieldType).Interface().(convert.Conversion); ok {
continue
} else if valNul, ok := fieldValue.Interface().(driver.Valuer); ok {
val, _ = valNul.Value()
if val == nil && !requiredField {
continue
}
} else {
if col.IsJSON {
if col.SQLType.IsText() {
bytes, err := json.DefaultJSONHandler.Marshal(fieldValue.Interface())
if err != nil {
return nil, err
}
val = string(bytes)
} else if col.SQLType.IsBlob() {
var bytes []byte
var err error
bytes, err = json.DefaultJSONHandler.Marshal(fieldValue.Interface())
if err != nil {
return nil, err
}
val = bytes
}
} else {
table, err := statement.tagParser.ParseWithCache(fieldValue)
if err != nil {
val = fieldValue.Interface()
} else {
if len(table.PrimaryKeys) == 1 {
pkField := reflect.Indirect(fieldValue).FieldByName(table.PKColumns()[0].FieldName)
// fix non-int pk issues
//if pkField.Int() != 0 {
if pkField.IsValid() && !utils.IsZero(pkField.Interface()) {
val = pkField.Interface()
} else {
continue
}
} else {
//TODO: how to handler?
return nil, fmt.Errorf("not supported %v as %v", fieldValue.Interface(), table.PrimaryKeys)
}
}
}
}
case reflect.Array:
continue
case reflect.Slice, reflect.Map:
if fieldValue == reflect.Zero(fieldType) {
continue
}
if fieldValue.IsNil() || !fieldValue.IsValid() || fieldValue.Len() == 0 {
continue
}
if col.SQLType.IsText() {
bytes, err := json.DefaultJSONHandler.Marshal(fieldValue.Interface())
if err != nil {
return nil, err
}
val = string(bytes)
} else if col.SQLType.IsBlob() {
var bytes []byte
var err error
if (fieldType.Kind() == reflect.Array || fieldType.Kind() == reflect.Slice) &&
fieldType.Elem().Kind() == reflect.Uint8 {
if fieldValue.Len() > 0 {
val = fieldValue.Bytes()
} else {
continue
}
} else {
bytes, err = json.DefaultJSONHandler.Marshal(fieldValue.Interface())
if err != nil {
return nil, err
}
val = bytes
}
} else {
continue
}
default:
val = fieldValue.Interface()
}
conds = append(conds, builder.Eq{colName: val})
}
return builder.And(conds...), nil
}
// BuildConds builds condition
func (statement *Statement) BuildConds(table *schemas.Table, bean interface{}, includeVersion bool, includeUpdated bool, includeNil bool, includeAutoIncr bool, addedTableName bool) (builder.Cond, error) {
return statement.buildConds2(table, bean, includeVersion, includeUpdated, includeNil, includeAutoIncr, statement.allUseBool, statement.useAllCols,
statement.unscoped, statement.MustColumnMap, statement.TableName(), statement.TableAlias, addedTableName)
}
func (statement *Statement) mergeConds(bean interface{}) error {
if !statement.NoAutoCondition && statement.RefTable != nil {
var addedTableName = (len(statement.JoinStr) > 0)
autoCond, err := statement.BuildConds(statement.RefTable, bean, true, true, false, true, addedTableName)
if err != nil {
return err
}
statement.cond = statement.cond.And(autoCond)
}
return statement.ProcessIDParam()
}
// GenConds generates conditions
func (statement *Statement) GenConds(bean interface{}) (string, []interface{}, error) {
if err := statement.mergeConds(bean); err != nil {
return "", nil, err
}
return statement.GenCondSQL(statement.cond)
}
func (statement *Statement) quoteColumnStr(columnStr string) string {
columns := strings.Split(columnStr, ",")
return statement.dialect.Quoter().Join(columns, ",")
}
// ConvertSQLOrArgs converts sql or args
func (statement *Statement) ConvertSQLOrArgs(sqlOrArgs ...interface{}) (string, []interface{}, error) {
sql, args, err := convertSQLOrArgs(sqlOrArgs...)
if err != nil {
return "", nil, err
}
return statement.ReplaceQuote(sql), args, nil
}
func convertSQLOrArgs(sqlOrArgs ...interface{}) (string, []interface{}, error) {
switch sqlOrArgs[0].(type) {
case string:
return sqlOrArgs[0].(string), sqlOrArgs[1:], nil
case *builder.Builder:
return sqlOrArgs[0].(*builder.Builder).ToSQL()
case builder.Builder:
bd := sqlOrArgs[0].(builder.Builder)
return bd.ToSQL()
}
return "", nil, ErrUnSupportedType
}
func (statement *Statement) joinColumns(cols []*schemas.Column, includeTableName bool) string {
var colnames = make([]string, len(cols))
for i, col := range cols {
if includeTableName {
colnames[i] = statement.quote(statement.TableName()) +
"." + statement.quote(col.Name)
} else {
colnames[i] = statement.quote(col.Name)
}
}
return strings.Join(colnames, ", ")
}
// CondDeleted returns the conditions whether a record is soft deleted.
func (statement *Statement) CondDeleted(col *schemas.Column) builder.Cond {
var colName = col.Name
if statement.JoinStr != "" {
var prefix string
if statement.TableAlias != "" {
prefix = statement.TableAlias
} else {
prefix = statement.TableName()
}
colName = statement.quote(prefix) + "." + statement.quote(col.Name)
}
var cond = builder.NewCond()
if col.SQLType.IsNumeric() {
cond = builder.Eq{colName: 0}
} else {
// FIXME: mssql: The conversion of a nvarchar data type to a datetime data type resulted in an out-of-range value.
if statement.dialect.URI().DBType != schemas.MSSQL {
cond = builder.Eq{colName: utils.ZeroTime1}
}
}
if col.Nullable {
cond = cond.Or(builder.IsNull{colName})
}
return cond
}