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