154 lines
4.1 KiB
Go
154 lines
4.1 KiB
Go
// Copyright 2014 beego Author. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package orm
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import (
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"fmt"
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"strconv"
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"strings"
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)
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const COMMA_SPACE = ", "
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type MySQLQueryBuilder struct {
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Tokens []string
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}
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func (qb *MySQLQueryBuilder) Select(fields ...string) QueryBuilder {
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qb.Tokens = append(qb.Tokens, "SELECT", strings.Join(fields, COMMA_SPACE))
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return qb
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}
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func (qb *MySQLQueryBuilder) From(tables ...string) QueryBuilder {
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qb.Tokens = append(qb.Tokens, "FROM", strings.Join(tables, COMMA_SPACE))
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return qb
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}
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func (qb *MySQLQueryBuilder) InnerJoin(table string) QueryBuilder {
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qb.Tokens = append(qb.Tokens, "INNER JOIN", table)
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return qb
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}
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func (qb *MySQLQueryBuilder) LeftJoin(table string) QueryBuilder {
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qb.Tokens = append(qb.Tokens, "LEFT JOIN", table)
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return qb
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}
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func (qb *MySQLQueryBuilder) RightJoin(table string) QueryBuilder {
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qb.Tokens = append(qb.Tokens, "RIGHT JOIN", table)
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return qb
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}
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func (qb *MySQLQueryBuilder) On(cond string) QueryBuilder {
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qb.Tokens = append(qb.Tokens, "ON", cond)
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return qb
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}
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func (qb *MySQLQueryBuilder) Where(cond string) QueryBuilder {
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qb.Tokens = append(qb.Tokens, "WHERE", cond)
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return qb
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}
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func (qb *MySQLQueryBuilder) And(cond string) QueryBuilder {
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qb.Tokens = append(qb.Tokens, "AND", cond)
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return qb
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}
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func (qb *MySQLQueryBuilder) Or(cond string) QueryBuilder {
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qb.Tokens = append(qb.Tokens, "OR", cond)
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return qb
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}
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func (qb *MySQLQueryBuilder) In(vals ...string) QueryBuilder {
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qb.Tokens = append(qb.Tokens, "IN", "(", strings.Join(vals, COMMA_SPACE), ")")
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return qb
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}
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func (qb *MySQLQueryBuilder) OrderBy(fields ...string) QueryBuilder {
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qb.Tokens = append(qb.Tokens, "ORDER BY", strings.Join(fields, COMMA_SPACE))
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return qb
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}
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func (qb *MySQLQueryBuilder) Asc() QueryBuilder {
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qb.Tokens = append(qb.Tokens, "ASC")
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return qb
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}
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func (qb *MySQLQueryBuilder) Desc() QueryBuilder {
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qb.Tokens = append(qb.Tokens, "DESC")
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return qb
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}
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func (qb *MySQLQueryBuilder) Limit(limit int) QueryBuilder {
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qb.Tokens = append(qb.Tokens, "LIMIT", strconv.Itoa(limit))
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return qb
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}
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func (qb *MySQLQueryBuilder) Offset(offset int) QueryBuilder {
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qb.Tokens = append(qb.Tokens, "OFFSET", strconv.Itoa(offset))
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return qb
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}
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func (qb *MySQLQueryBuilder) GroupBy(fields ...string) QueryBuilder {
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qb.Tokens = append(qb.Tokens, "GROUP BY", strings.Join(fields, COMMA_SPACE))
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return qb
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}
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func (qb *MySQLQueryBuilder) Having(cond string) QueryBuilder {
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qb.Tokens = append(qb.Tokens, "HAVING", cond)
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return qb
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}
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func (qb *MySQLQueryBuilder) Update(tables ...string) QueryBuilder {
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qb.Tokens = append(qb.Tokens, "UPDATE", strings.Join(tables, COMMA_SPACE))
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return qb
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}
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func (qb *MySQLQueryBuilder) Set(kv ...string) QueryBuilder {
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qb.Tokens = append(qb.Tokens, "SET", strings.Join(kv, COMMA_SPACE))
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return qb
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}
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func (qb *MySQLQueryBuilder) Delete(tables ...string) QueryBuilder {
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qb.Tokens = append(qb.Tokens, "DELETE")
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if len(tables) != 0 {
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qb.Tokens = append(qb.Tokens, strings.Join(tables, COMMA_SPACE))
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}
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return qb
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}
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func (qb *MySQLQueryBuilder) InsertInto(table string, fields ...string) QueryBuilder {
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qb.Tokens = append(qb.Tokens, "INSERT INTO", table)
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if len(fields) != 0 {
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fieldsStr := strings.Join(fields, COMMA_SPACE)
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qb.Tokens = append(qb.Tokens, "(", fieldsStr, ")")
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}
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return qb
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}
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func (qb *MySQLQueryBuilder) Values(vals ...string) QueryBuilder {
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valsStr := strings.Join(vals, COMMA_SPACE)
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qb.Tokens = append(qb.Tokens, "VALUES", "(", valsStr, ")")
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return qb
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}
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func (qb *MySQLQueryBuilder) Subquery(sub string, alias string) string {
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return fmt.Sprintf("(%s) AS %s", sub, alias)
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}
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func (qb *MySQLQueryBuilder) String() string {
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return strings.Join(qb.Tokens, " ")
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}
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