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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,63 @@ | ||
| // Copyright 2015 TiDB Author. All Rights Reserved. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| package orm | ||
|
|
||
| import ( | ||
| "fmt" | ||
| ) | ||
|
|
||
| // mysql dbBaser implementation. | ||
| type dbBaseTidb struct { | ||
| dbBase | ||
| } | ||
|
|
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| var _ dbBaser = new(dbBaseTidb) | ||
|
|
||
| // get mysql operator. | ||
| func (d *dbBaseTidb) OperatorSQL(operator string) string { | ||
| return mysqlOperators[operator] | ||
| } | ||
|
|
||
| // get mysql table field types. | ||
| func (d *dbBaseTidb) DbTypes() map[string]string { | ||
| return mysqlTypes | ||
| } | ||
|
|
||
| // show table sql for mysql. | ||
| func (d *dbBaseTidb) ShowTablesQuery() string { | ||
| return "SELECT table_name FROM information_schema.tables WHERE table_type = 'BASE TABLE' AND table_schema = DATABASE()" | ||
| } | ||
|
|
||
| // show columns sql of table for mysql. | ||
| func (d *dbBaseTidb) ShowColumnsQuery(table string) string { | ||
| return fmt.Sprintf("SELECT COLUMN_NAME, COLUMN_TYPE, IS_NULLABLE FROM information_schema.columns "+ | ||
| "WHERE table_schema = DATABASE() AND table_name = '%s'", table) | ||
| } | ||
|
|
||
| // execute sql to check index exist. | ||
| func (d *dbBaseTidb) IndexExists(db dbQuerier, table string, name string) bool { | ||
| row := db.QueryRow("SELECT count(*) FROM information_schema.statistics "+ | ||
| "WHERE table_schema = DATABASE() AND table_name = ? AND index_name = ?", table, name) | ||
| var cnt int | ||
| row.Scan(&cnt) | ||
| return cnt > 0 | ||
| } | ||
|
|
||
| // create new mysql dbBaser. | ||
| func newdbBaseTidb() dbBaser { | ||
| b := new(dbBaseTidb) | ||
| b.ins = b | ||
| return b | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,151 @@ | ||
| // Copyright 2015 TiDB Author. All Rights Reserved. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| package orm | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "strconv" | ||
| "strings" | ||
| ) | ||
|
|
||
| type TiDBQueryBuilder struct { | ||
| Tokens []string | ||
| } | ||
|
|
||
| func (qb *TiDBQueryBuilder) Select(fields ...string) QueryBuilder { | ||
| qb.Tokens = append(qb.Tokens, "SELECT", strings.Join(fields, CommaSpace)) | ||
| return qb | ||
| } | ||
|
|
||
| func (qb *TiDBQueryBuilder) From(tables ...string) QueryBuilder { | ||
| qb.Tokens = append(qb.Tokens, "FROM", strings.Join(tables, CommaSpace)) | ||
| return qb | ||
| } | ||
|
|
||
| func (qb *TiDBQueryBuilder) InnerJoin(table string) QueryBuilder { | ||
| qb.Tokens = append(qb.Tokens, "INNER JOIN", table) | ||
| return qb | ||
| } | ||
|
|
||
| func (qb *TiDBQueryBuilder) LeftJoin(table string) QueryBuilder { | ||
| qb.Tokens = append(qb.Tokens, "LEFT JOIN", table) | ||
| return qb | ||
| } | ||
|
|
||
| func (qb *TiDBQueryBuilder) RightJoin(table string) QueryBuilder { | ||
| qb.Tokens = append(qb.Tokens, "RIGHT JOIN", table) | ||
| return qb | ||
| } | ||
|
|
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| func (qb *TiDBQueryBuilder) On(cond string) QueryBuilder { | ||
| qb.Tokens = append(qb.Tokens, "ON", cond) | ||
| return qb | ||
| } | ||
|
|
||
| func (qb *TiDBQueryBuilder) Where(cond string) QueryBuilder { | ||
| qb.Tokens = append(qb.Tokens, "WHERE", cond) | ||
| return qb | ||
| } | ||
|
|
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| func (qb *TiDBQueryBuilder) And(cond string) QueryBuilder { | ||
| qb.Tokens = append(qb.Tokens, "AND", cond) | ||
| return qb | ||
| } | ||
|
|
||
| func (qb *TiDBQueryBuilder) Or(cond string) QueryBuilder { | ||
| qb.Tokens = append(qb.Tokens, "OR", cond) | ||
| return qb | ||
| } | ||
|
|
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| func (qb *TiDBQueryBuilder) In(vals ...string) QueryBuilder { | ||
| qb.Tokens = append(qb.Tokens, "IN", "(", strings.Join(vals, CommaSpace), ")") | ||
| return qb | ||
| } | ||
|
|
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| func (qb *TiDBQueryBuilder) OrderBy(fields ...string) QueryBuilder { | ||
| qb.Tokens = append(qb.Tokens, "ORDER BY", strings.Join(fields, CommaSpace)) | ||
| return qb | ||
| } | ||
|
|
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| func (qb *TiDBQueryBuilder) Asc() QueryBuilder { | ||
| qb.Tokens = append(qb.Tokens, "ASC") | ||
| return qb | ||
| } | ||
|
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| func (qb *TiDBQueryBuilder) Desc() QueryBuilder { | ||
| qb.Tokens = append(qb.Tokens, "DESC") | ||
| return qb | ||
| } | ||
|
|
||
| func (qb *TiDBQueryBuilder) Limit(limit int) QueryBuilder { | ||
| qb.Tokens = append(qb.Tokens, "LIMIT", strconv.Itoa(limit)) | ||
| return qb | ||
| } | ||
|
|
||
| func (qb *TiDBQueryBuilder) Offset(offset int) QueryBuilder { | ||
| qb.Tokens = append(qb.Tokens, "OFFSET", strconv.Itoa(offset)) | ||
| return qb | ||
| } | ||
|
|
||
| func (qb *TiDBQueryBuilder) GroupBy(fields ...string) QueryBuilder { | ||
| qb.Tokens = append(qb.Tokens, "GROUP BY", strings.Join(fields, CommaSpace)) | ||
| return qb | ||
| } | ||
|
|
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| func (qb *TiDBQueryBuilder) Having(cond string) QueryBuilder { | ||
| qb.Tokens = append(qb.Tokens, "HAVING", cond) | ||
| return qb | ||
| } | ||
|
|
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| func (qb *TiDBQueryBuilder) Update(tables ...string) QueryBuilder { | ||
| qb.Tokens = append(qb.Tokens, "UPDATE", strings.Join(tables, CommaSpace)) | ||
| return qb | ||
| } | ||
|
|
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| func (qb *TiDBQueryBuilder) Set(kv ...string) QueryBuilder { | ||
| qb.Tokens = append(qb.Tokens, "SET", strings.Join(kv, CommaSpace)) | ||
| return qb | ||
| } | ||
|
|
||
| func (qb *TiDBQueryBuilder) Delete(tables ...string) QueryBuilder { | ||
| qb.Tokens = append(qb.Tokens, "DELETE") | ||
| if len(tables) != 0 { | ||
| qb.Tokens = append(qb.Tokens, strings.Join(tables, CommaSpace)) | ||
| } | ||
| return qb | ||
| } | ||
|
|
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| func (qb *TiDBQueryBuilder) InsertInto(table string, fields ...string) QueryBuilder { | ||
| qb.Tokens = append(qb.Tokens, "INSERT INTO", table) | ||
| if len(fields) != 0 { | ||
| fieldsStr := strings.Join(fields, CommaSpace) | ||
| qb.Tokens = append(qb.Tokens, "(", fieldsStr, ")") | ||
| } | ||
| return qb | ||
| } | ||
|
|
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| func (qb *TiDBQueryBuilder) Values(vals ...string) QueryBuilder { | ||
| valsStr := strings.Join(vals, CommaSpace) | ||
| qb.Tokens = append(qb.Tokens, "VALUES", "(", valsStr, ")") | ||
| return qb | ||
| } | ||
|
|
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| func (qb *TiDBQueryBuilder) Subquery(sub string, alias string) string { | ||
| return fmt.Sprintf("(%s) AS %s", sub, alias) | ||
| } | ||
|
|
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| func (qb *TiDBQueryBuilder) String() string { | ||
| return strings.Join(qb.Tokens, " ") | ||
| } |