gosora/query_gen/lib/querygen.go
Azareal 1ccd4479ae Added support for offsets and max counts to the query generator.
Early draft of the ForumStore. Not much to see here yet!

Fixed a race condition in forum creation.
Fixed a race condition in group creation.
Fixed a race condition in forum deletion.
Moved four queries to the query generator.
Renamed StaticTopicStore to MemoryTopicStore.
Renamed StaticUserStore to MemoryUserStore.
SimpleSessionCheck is now pluggable.

We no longer have any raw queries outside mysql.go or the query generator, yay.
2017-06-15 12:40:35 +01:00

88 lines
1.9 KiB
Go

/* WIP Under Construction */
package qgen
import "errors"
var DB_Registry []DB_Adapter
var No_Adapter = errors.New("This adapter doesn't exist")
type DB_Column struct
{
Table string
Left string // Could be a function or a column, so I'm naming this Left
Alias string // aka AS Blah, if it's present
Type string // function or column
}
type DB_Field struct
{
Name string
Type string
}
type DB_Where struct
{
LeftTable string
LeftColumn string
RightTable string
RightColumn string
Operator string
LeftType string
RightType string
}
type DB_Joiner struct
{
LeftTable string
LeftColumn string
RightTable string
RightColumn string
Operator string
}
type DB_Order struct
{
Column string
Order string
}
type DB_Token struct {
Contents string
Type string // function, operator, column, number, string, substitute
}
type DB_Setter struct {
Column string
Expr []DB_Token // Simple expressions, the innards of functions are opaque for now.
}
type DB_Limit struct {
Offset string // ? or int
MaxCount string // ? or int
}
type DB_Adapter interface {
GetName() string
SimpleInsert(string,string,string,string) (string, error)
SimpleReplace(string,string,string,string) (string, error)
SimpleUpdate(string,string,string,string) (string, error)
SimpleDelete(string,string,string) (string, error)
Purge(string,string) (string, error)
SimpleSelect(string,string,string,string,string,string) (string, error)
SimpleLeftJoin(string,string,string,string,string,string,string,string) (string, error)
SimpleInnerJoin(string,string,string,string,string,string,string,string) (string, error)
SimpleCount(string,string,string,string) (string, error)
Write() error
// TO-DO: Add a simple query builder
}
func GetAdapter(name string) (adap DB_Adapter, err error) {
for _, adapter := range DB_Registry {
if adapter.GetName() == name {
return adapter, nil
}
}
return adap, No_Adapter
}