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Code Issues Releases Activity

more complete support for sql language

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This commit is contained in:
Zheng Yang 2014-09-09 14:17:12 +08:00
parent 38eb29fa7b
commit 29b7ff84e1
2 changed files with 80 additions and 37 deletions
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13
orm/qb.go
View File

@ -19,15 +19,22 @@ import "errors"
type QueryBuilder interface {
Select(fields ...string) QueryBuilder
From(tables ...string) QueryBuilder
Where(cond string) QueryBuilder
LimitOffset(limit int, offset int) QueryBuilder
InnerJoin(table string) QueryBuilder
LeftJoin(table string) QueryBuilder
RightJoin(table string) QueryBuilder
On(cond string) QueryBuilder
Where(cond string) QueryBuilder
And(cond string) QueryBuilder
Or(cond string) QueryBuilder
In(vals ...string) QueryBuilder
Subquery(query string, rename string) string
OrderBy(fields ...string) QueryBuilder
Asc() QueryBuilder
Desc() QueryBuilder
Limit(limit int) QueryBuilder
Offset(offset int) QueryBuilder
GroupBy(fields ...string) QueryBuilder
Having(cond string) QueryBuilder
Subquery(sub string, alias string) string
String() string
}

104
orm/qb_mysql.go
View File

@ -16,70 +16,106 @@ package orm
import (
"fmt"
"strconv"
"strings"
)
type MySQLQueryBuilder struct {
QueryString []string
QueryTokens []string
}
func (qw *MySQLQueryBuilder) Select(fields ...string) QueryBuilder {
func (qb *MySQLQueryBuilder) Select(fields ...string) QueryBuilder {
segment := fmt.Sprintf("SELECT %s", strings.Join(fields, ", "))
qw.QueryString = append(qw.QueryString, segment)
return qw
qb.QueryTokens = append(qb.QueryTokens, segment)
return qb
}
func (qw *MySQLQueryBuilder) From(tables ...string) QueryBuilder {
func (qb *MySQLQueryBuilder) From(tables ...string) QueryBuilder {
segment := fmt.Sprintf("FROM %s", strings.Join(tables, ", "))
qw.QueryString = append(qw.QueryString, segment)
return qw
qb.QueryTokens = append(qb.QueryTokens, segment)
return qb
}
func (qw *MySQLQueryBuilder) Where(cond string) QueryBuilder {
qw.QueryString = append(qw.QueryString, "WHERE "+cond)
return qw
func (qb *MySQLQueryBuilder) InnerJoin(table string) QueryBuilder {
qb.QueryTokens = append(qb.QueryTokens, "INNER JOIN "+table)
return qb
}
func (qw *MySQLQueryBuilder) LimitOffset(limit int, offset int) QueryBuilder {
qw.QueryString = append(qw.QueryString, fmt.Sprintf("LIMIT %d OFFSET %d", limit, offset))
return qw
func (qb *MySQLQueryBuilder) LeftJoin(table string) QueryBuilder {
qb.QueryTokens = append(qb.QueryTokens, "LEFT JOIN "+table)
return qb
}
func (qw *MySQLQueryBuilder) InnerJoin(table string) QueryBuilder {
qw.QueryString = append(qw.QueryString, "INNER JOIN "+table)
return qw
func (qb *MySQLQueryBuilder) RightJoin(table string) QueryBuilder {
qb.QueryTokens = append(qb.QueryTokens, "RIGHT JOIN "+table)
return qb
}
func (qw *MySQLQueryBuilder) LeftJoin(table string) QueryBuilder {
qw.QueryString = append(qw.QueryString, "LEFT JOIN "+table)
return qw
func (qb *MySQLQueryBuilder) On(cond string) QueryBuilder {
qb.QueryTokens = append(qb.QueryTokens, "ON "+cond)
return qb
}
func (qw *MySQLQueryBuilder) On(cond string) QueryBuilder {
qw.QueryString = append(qw.QueryString, "ON "+cond)
return qw
func (qb *MySQLQueryBuilder) Where(cond string) QueryBuilder {
qb.QueryTokens = append(qb.QueryTokens, "WHERE "+cond)
return qb
}
func (qw *MySQLQueryBuilder) And(cond string) QueryBuilder {
qw.QueryString = append(qw.QueryString, "AND "+cond)
return qw
func (qb *MySQLQueryBuilder) And(cond string) QueryBuilder {
qb.QueryTokens = append(qb.QueryTokens, "AND "+cond)
return qb
}
func (qw *MySQLQueryBuilder) Or(cond string) QueryBuilder {
qw.QueryString = append(qw.QueryString, "OR "+cond)
return qw
func (qb *MySQLQueryBuilder) Or(cond string) QueryBuilder {
qb.QueryTokens = append(qb.QueryTokens, "OR "+cond)
return qb
}
func (qw *MySQLQueryBuilder) In(vals ...string) QueryBuilder {
func (qb *MySQLQueryBuilder) In(vals ...string) QueryBuilder {
segment := fmt.Sprintf("IN (%s)", strings.Join(vals, ", "))
qw.QueryString = append(qw.QueryString, segment)
return qw
qb.QueryTokens = append(qb.QueryTokens, segment)
return qb
}
func (qw *MySQLQueryBuilder) Subquery(sub string, alias string) string {
func (qb *MySQLQueryBuilder) OrderBy(fields ...string) QueryBuilder {
qb.QueryTokens = append(qb.QueryTokens, "ORDER BY "+strings.Join(fields, ", "))
return qb
}
func (qb *MySQLQueryBuilder) Asc() QueryBuilder {
qb.QueryTokens = append(qb.QueryTokens, "ASC")
return qb
}
func (qb *MySQLQueryBuilder) Desc() QueryBuilder {
qb.QueryTokens = append(qb.QueryTokens, "DESC")
return qb
}
func (qb *MySQLQueryBuilder) Limit(limit int) QueryBuilder {
qb.QueryTokens = append(qb.QueryTokens, "LIMIT "+strconv.Itoa(limit))
return qb
}
func (qb *MySQLQueryBuilder) Offset(offset int) QueryBuilder {
qb.QueryTokens = append(qb.QueryTokens, "OFFSET "+strconv.Itoa(offset))
return qb
}
func (qb *MySQLQueryBuilder) GroupBy(fields ...string) QueryBuilder {
qb.QueryTokens = append(qb.QueryTokens, "GROUP BY "+strings.Join(fields, ", "))
return qb
}
func (qb *MySQLQueryBuilder) Having(cond string) QueryBuilder {
qb.QueryTokens = append(qb.QueryTokens, "HAVING "+cond)
return qb
}
func (qb *MySQLQueryBuilder) Subquery(sub string, alias string) string {
return fmt.Sprintf("(%s) AS %s", sub, alias)
}
func (qw *MySQLQueryBuilder) String() string {
return strings.Join(qw.QueryString, " ")
func (qb *MySQLQueryBuilder) String() string {
return strings.Join(qb.QueryTokens, " ")
}