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115 lines
4.0 KiB
Go
115 lines
4.0 KiB
Go
// Copyright GoFrame Author(https://goframe.org). All Rights Reserved.
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//
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// This Source Code Form is subject to the terms of the MIT License.
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// If a copy of the MIT was not distributed with this file,
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// You can obtain one at https://github.com/gogf/gf.
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package gdb
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import (
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"context"
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"database/sql"
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"fmt"
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"github.com/gogf/gf/v2/encoding/gjson"
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"github.com/gogf/gf/v2/errors/gcode"
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"github.com/gogf/gf/v2/errors/gerror"
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"github.com/gogf/gf/v2/internal/intlog"
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"github.com/gogf/gf/v2/text/gstr"
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"github.com/gogf/gf/v2/util/gutil"
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)
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// DriverWrapperDB is a DB wrapper for extending features with embedded DB.
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type DriverWrapperDB struct {
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DB
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}
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// Open creates and returns an underlying sql.DB object for pgsql.
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// https://pkg.go.dev/github.com/lib/pq
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func (d *DriverWrapperDB) Open(node *ConfigNode) (db *sql.DB, err error) {
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var ctx = d.GetCtx()
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intlog.PrintFunc(ctx, func() string {
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return fmt.Sprintf(`open new connection:%s`, gjson.MustEncode(node))
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})
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return d.DB.Open(node)
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}
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// Tables retrieves and returns the tables of current schema.
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// It's mainly used in cli tool chain for automatically generating the models.
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func (d *DriverWrapperDB) Tables(ctx context.Context, schema ...string) (tables []string, err error) {
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ctx = context.WithValue(ctx, ctxKeyInternalProducedSQL, struct{}{})
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return d.DB.Tables(ctx, schema...)
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}
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// TableFields retrieves and returns the fields' information of specified table of current
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// schema.
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//
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// The parameter `link` is optional, if given nil it automatically retrieves a raw sql connection
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// as its link to proceed necessary sql query.
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//
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// Note that it returns a map containing the field name and its corresponding fields.
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// As a map is unsorted, the TableField struct has an "Index" field marks its sequence in
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// the fields.
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//
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// It's using cache feature to enhance the performance, which is never expired util the
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// process restarts.
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func (d *DriverWrapperDB) TableFields(
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ctx context.Context, table string, schema ...string,
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) (fields map[string]*TableField, err error) {
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if table == "" {
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return nil, nil
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}
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charL, charR := d.GetChars()
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table = gstr.Trim(table, charL+charR)
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if gstr.Contains(table, " ") {
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return nil, gerror.NewCode(
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gcode.CodeInvalidParameter,
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"function TableFields supports only single table operations",
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)
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}
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var (
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cacheKey = fmt.Sprintf(
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`%s%s@%s#%s`,
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cachePrefixTableFields,
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d.GetGroup(),
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gutil.GetOrDefaultStr(d.GetSchema(), schema...),
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table,
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)
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value = tableFieldsMap.GetOrSetFuncLock(cacheKey, func() interface{} {
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ctx = context.WithValue(ctx, ctxKeyInternalProducedSQL, struct{}{})
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fields, err = d.DB.TableFields(ctx, table, schema...)
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if err != nil {
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return nil
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}
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return fields
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})
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)
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if value != nil {
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fields = value.(map[string]*TableField)
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}
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return
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}
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// DoInsert inserts or updates data forF given table.
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// This function is usually used for custom interface definition, you do not need call it manually.
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// The parameter `data` can be type of map/gmap/struct/*struct/[]map/[]struct, etc.
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// Eg:
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// Data(g.Map{"uid": 10000, "name":"john"})
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// Data(g.Slice{g.Map{"uid": 10000, "name":"john"}, g.Map{"uid": 20000, "name":"smith"})
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//
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// The parameter `option` values are as follows:
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// InsertOptionDefault: just insert, if there's unique/primary key in the data, it returns error;
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// InsertOptionReplace: if there's unique/primary key in the data, it deletes it from table and inserts a new one;
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// InsertOptionSave: if there's unique/primary key in the data, it updates it or else inserts a new one;
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// InsertOptionIgnore: if there's unique/primary key in the data, it ignores the inserting;
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func (d *DriverWrapperDB) DoInsert(ctx context.Context, link Link, table string, list List, option DoInsertOption) (result sql.Result, err error) {
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// Convert data type before commit it to underlying db driver.
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for i, item := range list {
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list[i], err = d.GetCore().ConvertDataForRecord(ctx, item, table)
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if err != nil {
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return nil, err
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}
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}
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return d.DB.DoInsert(ctx, link, table, list, option)
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}
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