mirror of
https://github.com/astaxie/beego.git
synced 2024-11-16 08:40:55 +00:00
135 lines
3.4 KiB
Go
135 lines
3.4 KiB
Go
package orm
|
|
|
|
import (
|
|
"fmt"
|
|
"strconv"
|
|
)
|
|
|
|
var postgresOperators = map[string]string{
|
|
"exact": "= ?",
|
|
"iexact": "= UPPER(?)",
|
|
"contains": "LIKE ?",
|
|
"icontains": "LIKE UPPER(?)",
|
|
"gt": "> ?",
|
|
"gte": ">= ?",
|
|
"lt": "< ?",
|
|
"lte": "<= ?",
|
|
"startswith": "LIKE ?",
|
|
"endswith": "LIKE ?",
|
|
"istartswith": "LIKE UPPER(?)",
|
|
"iendswith": "LIKE UPPER(?)",
|
|
}
|
|
|
|
var postgresTypes = map[string]string{
|
|
"auto": "serial NOT NULL PRIMARY KEY",
|
|
"pk": "NOT NULL PRIMARY KEY",
|
|
"bool": "bool",
|
|
"string": "varchar(%d)",
|
|
"string-text": "text",
|
|
"time.Time-date": "date",
|
|
"time.Time": "timestamp with time zone",
|
|
"int8": `smallint CHECK("%COL%" >= -127 AND "%COL%" <= 128)`,
|
|
"int16": "smallint",
|
|
"int32": "integer",
|
|
"int64": "bigint",
|
|
"uint8": `smallint CHECK("%COL%" >= 0 AND "%COL%" <= 255)`,
|
|
"uint16": `integer CHECK("%COL%" >= 0)`,
|
|
"uint32": `bigint CHECK("%COL%" >= 0)`,
|
|
"uint64": `bigint CHECK("%COL%" >= 0)`,
|
|
"float64": "double precision",
|
|
"float64-decimal": "numeric(%d, %d)",
|
|
}
|
|
|
|
type dbBasePostgres struct {
|
|
dbBase
|
|
}
|
|
|
|
var _ dbBaser = new(dbBasePostgres)
|
|
|
|
func (d *dbBasePostgres) OperatorSql(operator string) string {
|
|
return postgresOperators[operator]
|
|
}
|
|
|
|
func (d *dbBasePostgres) GenerateOperatorLeftCol(fi *fieldInfo, operator string, leftCol *string) {
|
|
switch operator {
|
|
case "contains", "startswith", "endswith":
|
|
*leftCol = fmt.Sprintf("%s::text", *leftCol)
|
|
case "iexact", "icontains", "istartswith", "iendswith":
|
|
*leftCol = fmt.Sprintf("UPPER(%s::text)", *leftCol)
|
|
}
|
|
}
|
|
|
|
func (d *dbBasePostgres) SupportUpdateJoin() bool {
|
|
return false
|
|
}
|
|
|
|
func (d *dbBasePostgres) MaxLimit() uint64 {
|
|
return 0
|
|
}
|
|
|
|
func (d *dbBasePostgres) TableQuote() string {
|
|
return `"`
|
|
}
|
|
|
|
func (d *dbBasePostgres) ReplaceMarks(query *string) {
|
|
q := *query
|
|
num := 0
|
|
for _, c := range q {
|
|
if c == '?' {
|
|
num += 1
|
|
}
|
|
}
|
|
if num == 0 {
|
|
return
|
|
}
|
|
data := make([]byte, 0, len(q)+num)
|
|
num = 1
|
|
for i := 0; i < len(q); i++ {
|
|
c := q[i]
|
|
if c == '?' {
|
|
data = append(data, '$')
|
|
data = append(data, []byte(strconv.Itoa(num))...)
|
|
num += 1
|
|
} else {
|
|
data = append(data, c)
|
|
}
|
|
}
|
|
*query = string(data)
|
|
}
|
|
|
|
func (d *dbBasePostgres) HasReturningID(mi *modelInfo, query *string) (has bool) {
|
|
if mi.fields.pk.auto {
|
|
if query != nil {
|
|
*query = fmt.Sprintf(`%s RETURNING "%s"`, *query, mi.fields.pk.column)
|
|
}
|
|
has = true
|
|
}
|
|
return
|
|
}
|
|
|
|
func (d *dbBasePostgres) ShowTablesQuery() string {
|
|
return "SELECT table_name FROM information_schema.tables WHERE table_type = 'BASE TABLE' AND table_schema NOT IN ('pg_catalog', 'information_schema')"
|
|
}
|
|
|
|
func (d *dbBasePostgres) ShowColumnsQuery(table string) string {
|
|
return fmt.Sprintf("SELECT column_name, data_type, is_nullable FROM information_schema.columns where table_schema NOT IN ('pg_catalog', 'information_schema') and table_name = '%s'", table)
|
|
}
|
|
|
|
func (d *dbBasePostgres) DbTypes() map[string]string {
|
|
return postgresTypes
|
|
}
|
|
|
|
func (d *dbBasePostgres) IndexExists(db dbQuerier, table string, name string) bool {
|
|
query := fmt.Sprintf("SELECT COUNT(*) FROM pg_indexes WHERE tablename = '%s' AND indexname = '%s'", table, name)
|
|
row := db.QueryRow(query)
|
|
var cnt int
|
|
row.Scan(&cnt)
|
|
return cnt > 0
|
|
}
|
|
|
|
func newdbBasePostgres() dbBaser {
|
|
b := new(dbBasePostgres)
|
|
b.ins = b
|
|
return b
|
|
}
|