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72 lines
2.3 KiB
72 lines
2.3 KiB
// Copyright (c) 2012-present The upper.io/db authors. All rights reserved.
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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package postgresql
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import (
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db "github.com/upper/db/v4"
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"github.com/upper/db/v4/internal/sqladapter"
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)
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type collectionAdapter struct {
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}
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func (*collectionAdapter) Insert(col sqladapter.Collection, item interface{}) (interface{}, error) {
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pKey, err := col.PrimaryKeys()
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if err != nil {
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return nil, err
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}
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q := col.SQL().InsertInto(col.Name()).Values(item)
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if len(pKey) == 0 {
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// There is no primary key.
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res, err := q.Exec()
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if err != nil {
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return nil, err
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}
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// Attempt to use LastInsertId() (probably won't work, but the Exec()
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// succeeded, so we can safely ignore the error from LastInsertId()).
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lastID, err := res.LastInsertId()
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if err != nil {
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return nil, nil
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}
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return lastID, nil
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}
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// Asking the database to return the primary key after insertion.
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q = q.Returning(pKey...)
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var keyMap db.Cond
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if err := q.Iterator().One(&keyMap); err != nil {
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return nil, err
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}
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// The IDSetter interface does not match, look for another interface match.
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if len(keyMap) == 1 {
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return keyMap[pKey[0]], nil
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}
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// This was a compound key and no interface matched it, let's return a map.
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return keyMap, nil
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}
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