85 lines
1.8 KiB
Go
85 lines
1.8 KiB
Go
package orm
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import (
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"fmt"
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"strings"
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)
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func buildInsertSql(tablename string, fields []dbfield, dialect Dialect) string {
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cols := make([]string, len(fields))
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placeholders := make([]string, len(fields))
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for i, f := range fields {
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cols[i] = f.dbname
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placeholders[i] = fmt.Sprintf("$%d", i+1)
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}
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return fmt.Sprintf(
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"insert into %s (%s) values (%s)",
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tablename,
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strings.Join(cols, ","),
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strings.Join(placeholders, ","),
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)
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}
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func buildUpdateSql(tablename string, fields []dbfield, dialect Dialect) string {
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predicates := make([]string, len(fields)-1)
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var where string
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i := 0
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for _, f := range fields {
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if f.dbname == "id" {
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where = fmt.Sprintf("id=$%d and _version=$%d", len(fields), len(fields)+1)
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} else {
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predicates[i] = fmt.Sprintf("%s=$%d", f.dbname, i+1)
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i++
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}
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}
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return fmt.Sprintf(
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"update %s set %s where %s",
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tablename,
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strings.Join(predicates, ","),
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where,
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)
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}
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func buildSelectbyidSql(tablename string, fields []dbfield, dialect Dialect) string {
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columns := make([]string, len(fields))
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var where string
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for i, f := range fields {
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columns[i] = fmt.Sprintf("%s", f.dbname)
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}
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where = "id=$1"
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return fmt.Sprintf(
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"select %s from %s where %s",
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strings.Join(columns, ","),
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tablename,
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where,
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)
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}
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func buildDeletebyidSql(tablename string, fields []dbfield, dialect Dialect) string {
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where := "id=$1"
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return fmt.Sprintf(
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"delete from %s where %s",
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tablename,
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where,
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)
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}
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func buildSelectWhere(tablename string, fields []dbfield, dialect Dialect) string {
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columns := make([]string, len(fields))
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for i, f := range fields {
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columns[i] = fmt.Sprintf("%s", f.dbname)
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}
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return fmt.Sprintf(
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"select %s from %s",
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strings.Join(columns, ","),
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tablename,
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)
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}
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func buildDeleteWhere(tablename string, fields []dbfield, dialect Dialect) string {
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return fmt.Sprintf(
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"delete from %s",
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tablename,
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)
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}
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