212 lines
7.7 KiB
Go
212 lines
7.7 KiB
Go
/* WIP Under Construction */
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package qgen
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import (
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"database/sql"
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"log"
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)
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var Builder *builder
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func init() {
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Builder = &builder{conn: nil}
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}
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// A set of wrappers around the generator methods, so that we can use this inline in Gosora
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type builder struct {
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conn *sql.DB
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adapter Adapter
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}
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func (build *builder) Accumulator() *Accumulator {
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return &Accumulator{build.conn, build.adapter, nil}
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}
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// TODO: Move this method out of builder?
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func (build *builder) Init(adapter string, config map[string]string) error {
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err := build.SetAdapter(adapter)
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if err != nil {
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return err
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}
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conn, err := build.adapter.BuildConn(config)
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build.conn = conn
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log.Print("err: ", err) // Is the problem here somehow?
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return err
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}
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func (build *builder) SetConn(conn *sql.DB) {
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build.conn = conn
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}
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func (build *builder) GetConn() *sql.DB {
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return build.conn
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}
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func (build *builder) SetAdapter(name string) error {
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adap, err := GetAdapter(name)
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if err != nil {
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return err
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}
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build.adapter = adap
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return nil
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}
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func (build *builder) GetAdapter() Adapter {
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return build.adapter
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}
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func (build *builder) DbVersion() (dbVersion string) {
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build.conn.QueryRow(build.adapter.DbVersion()).Scan(&dbVersion)
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return dbVersion
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}
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func (build *builder) Begin() (*sql.Tx, error) {
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return build.conn.Begin()
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}
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func (build *builder) Tx(handler func(*TransactionBuilder) error) error {
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tx, err := build.conn.Begin()
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if err != nil {
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return err
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}
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err = handler(&TransactionBuilder{tx, build.adapter, nil})
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if err != nil {
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tx.Rollback()
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return err
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}
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return tx.Commit()
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}
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func (build *builder) prepare(res string, err error) (*sql.Stmt, error) {
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if err != nil {
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return nil, err
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}
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return build.conn.Prepare(res)
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}
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func (build *builder) SimpleSelect(table string, columns string, where string, orderby string, limit string) (stmt *sql.Stmt, err error) {
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return build.prepare(build.adapter.SimpleSelect("_builder", table, columns, where, orderby, limit))
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}
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func (build *builder) SimpleCount(table string, where string, limit string) (stmt *sql.Stmt, err error) {
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return build.prepare(build.adapter.SimpleCount("_builder", table, where, limit))
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}
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func (build *builder) SimpleLeftJoin(table1 string, table2 string, columns string, joiners string, where string, orderby string, limit string) (stmt *sql.Stmt, err error) {
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return build.prepare(build.adapter.SimpleLeftJoin("_builder", table1, table2, columns, joiners, where, orderby, limit))
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}
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func (build *builder) SimpleInnerJoin(table1 string, table2 string, columns string, joiners string, where string, orderby string, limit string) (stmt *sql.Stmt, err error) {
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return build.prepare(build.adapter.SimpleInnerJoin("_builder", table1, table2, columns, joiners, where, orderby, limit))
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}
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func (build *builder) DropTable(table string) (stmt *sql.Stmt, err error) {
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return build.prepare(build.adapter.DropTable("_builder", table))
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}
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func (build *builder) CreateTable(table string, charset string, collation string, columns []DBTableColumn, keys []DBTableKey) (stmt *sql.Stmt, err error) {
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return build.prepare(build.adapter.CreateTable("_builder", table, charset, collation, columns, keys))
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}
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func (build *builder) AddColumn(table string, column DBTableColumn) (stmt *sql.Stmt, err error) {
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return build.prepare(build.adapter.AddColumn("_builder", table, column))
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}
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func (build *builder) SimpleInsert(table string, columns string, fields string) (stmt *sql.Stmt, err error) {
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return build.prepare(build.adapter.SimpleInsert("_builder", table, columns, fields))
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}
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func (build *builder) SimpleInsertSelect(ins DBInsert, sel DBSelect) (stmt *sql.Stmt, err error) {
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return build.prepare(build.adapter.SimpleInsertSelect("_builder", ins, sel))
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}
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func (build *builder) SimpleInsertLeftJoin(ins DBInsert, sel DBJoin) (stmt *sql.Stmt, err error) {
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return build.prepare(build.adapter.SimpleInsertLeftJoin("_builder", ins, sel))
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}
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func (build *builder) SimpleInsertInnerJoin(ins DBInsert, sel DBJoin) (stmt *sql.Stmt, err error) {
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return build.prepare(build.adapter.SimpleInsertInnerJoin("_builder", ins, sel))
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}
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func (build *builder) SimpleUpdate(table string, set string, where string) (stmt *sql.Stmt, err error) {
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return build.prepare(build.adapter.SimpleUpdate("_builder", table, set, where))
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}
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func (build *builder) SimpleDelete(table string, where string) (stmt *sql.Stmt, err error) {
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return build.prepare(build.adapter.SimpleDelete("_builder", table, where))
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}
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// I don't know why you need this, but here it is x.x
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func (build *builder) Purge(table string) (stmt *sql.Stmt, err error) {
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return build.prepare(build.adapter.Purge("_builder", table))
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}
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func (build *builder) prepareTx(tx *sql.Tx, res string, err error) (*sql.Stmt, error) {
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if err != nil {
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return nil, err
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}
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return tx.Prepare(res)
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}
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// These ones support transactions
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func (build *builder) SimpleSelectTx(tx *sql.Tx, table string, columns string, where string, orderby string, limit string) (stmt *sql.Stmt, err error) {
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res, err := build.adapter.SimpleSelect("_builder", table, columns, where, orderby, limit)
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return build.prepareTx(tx, res, err)
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}
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func (build *builder) SimpleCountTx(tx *sql.Tx, table string, where string, limit string) (stmt *sql.Stmt, err error) {
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res, err := build.adapter.SimpleCount("_builder", table, where, limit)
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return build.prepareTx(tx, res, err)
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}
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func (build *builder) SimpleLeftJoinTx(tx *sql.Tx, table1 string, table2 string, columns string, joiners string, where string, orderby string, limit string) (stmt *sql.Stmt, err error) {
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res, err := build.adapter.SimpleLeftJoin("_builder", table1, table2, columns, joiners, where, orderby, limit)
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return build.prepareTx(tx, res, err)
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}
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func (build *builder) SimpleInnerJoinTx(tx *sql.Tx, table1 string, table2 string, columns string, joiners string, where string, orderby string, limit string) (stmt *sql.Stmt, err error) {
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res, err := build.adapter.SimpleInnerJoin("_builder", table1, table2, columns, joiners, where, orderby, limit)
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return build.prepareTx(tx, res, err)
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}
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func (build *builder) CreateTableTx(tx *sql.Tx, table string, charset string, collation string, columns []DBTableColumn, keys []DBTableKey) (stmt *sql.Stmt, err error) {
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res, err := build.adapter.CreateTable("_builder", table, charset, collation, columns, keys)
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return build.prepareTx(tx, res, err)
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}
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func (build *builder) SimpleInsertTx(tx *sql.Tx, table string, columns string, fields string) (stmt *sql.Stmt, err error) {
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res, err := build.adapter.SimpleInsert("_builder", table, columns, fields)
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return build.prepareTx(tx, res, err)
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}
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func (build *builder) SimpleInsertSelectTx(tx *sql.Tx, ins DBInsert, sel DBSelect) (stmt *sql.Stmt, err error) {
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res, err := build.adapter.SimpleInsertSelect("_builder", ins, sel)
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return build.prepareTx(tx, res, err)
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}
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func (build *builder) SimpleInsertLeftJoinTx(tx *sql.Tx, ins DBInsert, sel DBJoin) (stmt *sql.Stmt, err error) {
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res, err := build.adapter.SimpleInsertLeftJoin("_builder", ins, sel)
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return build.prepareTx(tx, res, err)
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}
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func (build *builder) SimpleInsertInnerJoinTx(tx *sql.Tx, ins DBInsert, sel DBJoin) (stmt *sql.Stmt, err error) {
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res, err := build.adapter.SimpleInsertInnerJoin("_builder", ins, sel)
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return build.prepareTx(tx, res, err)
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}
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func (build *builder) SimpleUpdateTx(tx *sql.Tx, table string, set string, where string) (stmt *sql.Stmt, err error) {
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res, err := build.adapter.SimpleUpdate("_builder", table, set, where)
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return build.prepareTx(tx, res, err)
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}
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func (build *builder) SimpleDeleteTx(tx *sql.Tx, table string, where string) (stmt *sql.Stmt, err error) {
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res, err := build.adapter.SimpleDelete("_builder", table, where)
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return build.prepareTx(tx, res, err)
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}
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// I don't know why you need this, but here it is x.x
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func (build *builder) PurgeTx(tx *sql.Tx, table string) (stmt *sql.Stmt, err error) {
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res, err := build.adapter.Purge("_builder", table)
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return build.prepareTx(tx, res, err)
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}
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