mirror of
https://github.com/astaxie/beego.git
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86 lines
2.4 KiB
Go
86 lines
2.4 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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"strings"
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)
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type MySQLQueryBuilder struct {
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QueryString []string
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}
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func (qw *MySQLQueryBuilder) Select(fields ...string) QueryBuilder {
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segment := fmt.Sprintf("SELECT %s", strings.Join(fields, ", "))
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qw.QueryString = append(qw.QueryString, segment)
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return qw
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}
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func (qw *MySQLQueryBuilder) From(tables ...string) QueryBuilder {
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segment := fmt.Sprintf("FROM %s", strings.Join(tables, ", "))
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qw.QueryString = append(qw.QueryString, segment)
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return qw
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}
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func (qw *MySQLQueryBuilder) Where(cond string) QueryBuilder {
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qw.QueryString = append(qw.QueryString, "WHERE "+cond)
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return qw
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}
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func (qw *MySQLQueryBuilder) LimitOffset(limit int, offset int) QueryBuilder {
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qw.QueryString = append(qw.QueryString, fmt.Sprintf("LIMIT %d OFFSET %d", limit, offset))
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return qw
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}
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func (qw *MySQLQueryBuilder) InnerJoin(table string) QueryBuilder {
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qw.QueryString = append(qw.QueryString, "INNER JOIN "+table)
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return qw
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}
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func (qw *MySQLQueryBuilder) LeftJoin(table string) QueryBuilder {
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qw.QueryString = append(qw.QueryString, "LEFT JOIN "+table)
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return qw
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}
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func (qw *MySQLQueryBuilder) On(cond string) QueryBuilder {
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qw.QueryString = append(qw.QueryString, "ON "+cond)
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return qw
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}
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func (qw *MySQLQueryBuilder) And(cond string) QueryBuilder {
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qw.QueryString = append(qw.QueryString, "AND "+cond)
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return qw
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}
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func (qw *MySQLQueryBuilder) Or(cond string) QueryBuilder {
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qw.QueryString = append(qw.QueryString, "OR "+cond)
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return qw
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}
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func (qw *MySQLQueryBuilder) In(vals ...string) QueryBuilder {
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segment := fmt.Sprintf("IN (%s)", strings.Join(vals, ", "))
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qw.QueryString = append(qw.QueryString, segment)
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return qw
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}
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func (qw *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 (qw *MySQLQueryBuilder) String() string {
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return strings.Join(qw.QueryString, " ")
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}
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