135 lines
2.9 KiB
Go
135 lines
2.9 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_Table_Column struct
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{
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Name string
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Type string
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Size int
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Null bool
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Auto_Increment bool
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Default string
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}
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type DB_Table_Key struct
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{
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Columns string
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Type string
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}
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type DB_Select struct
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{
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Table string
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Columns string
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Where string
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Orderby string
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Limit string
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}
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type DB_Join struct
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{
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Table1 string
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Table2 string
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Columns string
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Joiners string
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Where string
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Orderby string
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Limit string
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}
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type DB_Insert struct
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{
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Table string
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Columns string
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Fields string
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}
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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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Expr []DB_Token // Simple expressions, the innards of functions are opaque for now.
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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_Limit struct {
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Offset string // ? or int
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MaxCount string // ? or int
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}
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type DB_Stmt struct
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{
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Contents string
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Type string // create-table, insert, update, delete
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}
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type DB_Adapter interface {
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GetName() string
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CreateTable(name string, table string, charset string, collation string, columns []DB_Table_Column, keys []DB_Table_Key) (string, error)
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SimpleInsert(name string, table string, columns string, fields string) (string, error)
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SimpleReplace(name string, table string, columns string, fields string) (string, error)
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SimpleUpdate(name string, table string, set string, where string) (string, error)
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SimpleDelete(name string, table string, where string) (string, error)
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Purge(name string, table string) (string, error)
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SimpleSelect(name string, table string, columns string, where string, orderby string, limit string) (string, error)
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SimpleLeftJoin(name string, table1 string, table2 string, columns string, joiners string, where string, orderby string, limit string) (string, error)
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SimpleInnerJoin(string,string,string,string,string,string,string,string) (string, error)
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SimpleInsertSelect(string,DB_Insert,DB_Select) (string,error)
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SimpleInsertLeftJoin(string,DB_Insert,DB_Join) (string,error)
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SimpleInsertInnerJoin(string,DB_Insert,DB_Join) (string,error)
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SimpleCount(string,string,string,string) (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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