215 lines
7.5 KiB
Go
215 lines
7.5 KiB
Go
/* WIP: A version of the builder which accumulates errors, we'll see if we can't unify the implementations at some point */
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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 LogPrepares = true
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type Accumulator struct {
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conn *sql.DB
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adapter Adapter
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firstErr error
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}
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func (build *Accumulator) SetConn(conn *sql.DB) {
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build.conn = conn
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}
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func (build *Accumulator) 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 *Accumulator) GetAdapter() Adapter {
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return build.adapter
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}
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func (build *Accumulator) FirstError() error {
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return build.firstErr
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}
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func (build *Accumulator) recordError(err error) {
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if err == nil {
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return
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}
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if build.firstErr == nil {
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build.firstErr = err
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}
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}
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func (build *Accumulator) prepare(res string, err error) *sql.Stmt {
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if LogPrepares {
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log.Print("res: ", res)
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}
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if err != nil {
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build.recordError(err)
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return nil
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}
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stmt, err := build.conn.Prepare(res)
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build.recordError(err)
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return stmt
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}
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func (build *Accumulator) Tx(handler func(*TransactionBuilder) error) {
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tx, err := build.conn.Begin()
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if err != nil {
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build.recordError(err)
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return
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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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build.recordError(err)
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return
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}
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build.recordError(tx.Commit())
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}
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func (build *Accumulator) SimpleSelect(table string, columns string, where string, orderby string, limit string) *sql.Stmt {
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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 *Accumulator) SimpleCount(table string, where string, limit string) *sql.Stmt {
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return build.prepare(build.adapter.SimpleCount("_builder", table, where, limit))
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}
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func (build *Accumulator) SimpleLeftJoin(table1 string, table2 string, columns string, joiners string, where string, orderby string, limit string) *sql.Stmt {
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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 *Accumulator) SimpleInnerJoin(table1 string, table2 string, columns string, joiners string, where string, orderby string, limit string) *sql.Stmt {
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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 *Accumulator) CreateTable(table string, charset string, collation string, columns []DBTableColumn, keys []DBTableKey) *sql.Stmt {
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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 *Accumulator) SimpleInsert(table string, columns string, fields string) *sql.Stmt {
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return build.prepare(build.adapter.SimpleInsert("_builder", table, columns, fields))
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}
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func (build *Accumulator) SimpleInsertSelect(ins DBInsert, sel DBSelect) *sql.Stmt {
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return build.prepare(build.adapter.SimpleInsertSelect("_builder", ins, sel))
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}
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func (build *Accumulator) SimpleInsertLeftJoin(ins DBInsert, sel DBJoin) *sql.Stmt {
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return build.prepare(build.adapter.SimpleInsertLeftJoin("_builder", ins, sel))
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}
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func (build *Accumulator) SimpleInsertInnerJoin(ins DBInsert, sel DBJoin) *sql.Stmt {
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return build.prepare(build.adapter.SimpleInsertInnerJoin("_builder", ins, sel))
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}
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func (build *Accumulator) SimpleUpdate(table string, set string, where string) *sql.Stmt {
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return build.prepare(build.adapter.SimpleUpdate("_builder", table, set, where))
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}
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func (build *Accumulator) SimpleDelete(table string, where string) *sql.Stmt {
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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 *Accumulator) Purge(table string) *sql.Stmt {
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return build.prepare(build.adapter.Purge("_builder", table))
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}
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func (build *Accumulator) prepareTx(tx *sql.Tx, res string, err error) (stmt *sql.Stmt) {
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if err != nil {
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build.recordError(err)
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return nil
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}
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stmt, err = tx.Prepare(res)
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build.recordError(err)
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return stmt
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}
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// These ones support transactions
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func (build *Accumulator) SimpleSelectTx(tx *sql.Tx, table string, columns string, where string, orderby string, limit string) (stmt *sql.Stmt) {
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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 *Accumulator) SimpleCountTx(tx *sql.Tx, table string, where string, limit string) (stmt *sql.Stmt) {
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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 *Accumulator) SimpleLeftJoinTx(tx *sql.Tx, table1 string, table2 string, columns string, joiners string, where string, orderby string, limit string) (stmt *sql.Stmt) {
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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 *Accumulator) SimpleInnerJoinTx(tx *sql.Tx, table1 string, table2 string, columns string, joiners string, where string, orderby string, limit string) (stmt *sql.Stmt) {
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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 *Accumulator) CreateTableTx(tx *sql.Tx, table string, charset string, collation string, columns []DBTableColumn, keys []DBTableKey) (stmt *sql.Stmt) {
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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 *Accumulator) SimpleInsertTx(tx *sql.Tx, table string, columns string, fields string) (stmt *sql.Stmt) {
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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 *Accumulator) SimpleInsertSelectTx(tx *sql.Tx, ins DBInsert, sel DBSelect) (stmt *sql.Stmt) {
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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 *Accumulator) SimpleInsertLeftJoinTx(tx *sql.Tx, ins DBInsert, sel DBJoin) (stmt *sql.Stmt) {
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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 *Accumulator) SimpleInsertInnerJoinTx(tx *sql.Tx, ins DBInsert, sel DBJoin) (stmt *sql.Stmt) {
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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 *Accumulator) SimpleUpdateTx(tx *sql.Tx, table string, set string, where string) (stmt *sql.Stmt) {
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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 *Accumulator) SimpleDeleteTx(tx *sql.Tx, table string, where string) (stmt *sql.Stmt) {
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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 *Accumulator) PurgeTx(tx *sql.Tx, table string) (stmt *sql.Stmt) {
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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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func (build *Accumulator) Delete(table string) *accDeleteBuilder {
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return &accDeleteBuilder{table, "", build}
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}
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func (build *Accumulator) Update(table string) *accUpdateBuilder {
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return &accUpdateBuilder{table, "", "", build}
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}
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func (build *Accumulator) Select(table string) *AccSelectBuilder {
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return &AccSelectBuilder{table, "", "", "", "", nil, nil, "", build}
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}
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func (build *Accumulator) Insert(table string) *accInsertBuilder {
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return &accInsertBuilder{table, "", "", build}
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}
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func (build *Accumulator) Count(table string) *accCountBuilder {
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return &accCountBuilder{table, "", "", build}
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}
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