/
collection.go
99 lines (86 loc) · 2.88 KB
/
collection.go
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// Copyright (c) 2012-present The upper.io/db authors. All rights reserved.
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
package ql
import (
"database/sql"
db "github.com/upper/db/v4"
"github.com/upper/db/v4/internal/sqladapter"
"github.com/upper/db/v4/internal/sqlbuilder"
)
type resultProxy struct {
db.Result
col sqladapter.Collection
}
func (r *resultProxy) Select(fields ...interface{}) db.Result {
if len(fields) == 1 {
if s, ok := fields[0].(string); ok && s == "*" {
var columns []struct {
Name string `db:"Name"`
}
err := r.col.SQL().Select("Name").
From("__Column").
Where("TableName", r.col.Name()).
Iterator().All(&columns)
if err == nil {
fields = make([]interface{}, 0, len(columns)+1)
fields = append(fields, "id() AS id")
for _, column := range columns {
fields = append(fields, column.Name)
}
}
}
}
return r.Result.Select(fields...)
}
type collectionAdapter struct {
}
func (*collectionAdapter) FilterConds(conds ...interface{}) []interface{} {
if len(conds) == 1 {
switch conds[0].(type) {
case int, int64, uint, uint64:
// This is an special QL index, I'm not sure if it allows the user to
// create special indexes with custom names.
conds[0] = db.Cond{"id()": db.Eq(conds[0])}
}
}
return conds
}
func (*collectionAdapter) Find(col sqladapter.Collection, res *sqladapter.Result, conds ...interface{}) db.Result {
proxy := &resultProxy{
Result: res,
col: col,
}
return proxy.Select("*")
}
func (*collectionAdapter) Insert(col sqladapter.Collection, item interface{}) (interface{}, error) {
columnNames, columnValues, err := sqlbuilder.Map(item, nil)
if err != nil {
return nil, err
}
q := col.SQL().InsertInto(col.Name()).
Columns(columnNames...).
Values(columnValues...)
var res sql.Result
if res, err = q.Exec(); err != nil {
return nil, err
}
return res.LastInsertId()
}