From cf7a05f80f68b5b1c8bcc0089679dd497cec2506 Mon Sep 17 00:00:00 2001 From: =Corey Hulen Date: Sun, 14 Jun 2015 23:53:32 -0800 Subject: first commit --- .../github.com/go-sql-driver/mysql/statement.go | 149 +++++++++++++++++++++ 1 file changed, 149 insertions(+) create mode 100644 Godeps/_workspace/src/github.com/go-sql-driver/mysql/statement.go (limited to 'Godeps/_workspace/src/github.com/go-sql-driver/mysql/statement.go') diff --git a/Godeps/_workspace/src/github.com/go-sql-driver/mysql/statement.go b/Godeps/_workspace/src/github.com/go-sql-driver/mysql/statement.go new file mode 100644 index 000000000..f9dae03fa --- /dev/null +++ b/Godeps/_workspace/src/github.com/go-sql-driver/mysql/statement.go @@ -0,0 +1,149 @@ +// Go MySQL Driver - A MySQL-Driver for Go's database/sql package +// +// Copyright 2012 The Go-MySQL-Driver Authors. All rights reserved. +// +// This Source Code Form is subject to the terms of the Mozilla Public +// License, v. 2.0. If a copy of the MPL was not distributed with this file, +// You can obtain one at http://mozilla.org/MPL/2.0/. + +package mysql + +import ( + "database/sql/driver" + "fmt" + "reflect" +) + +type mysqlStmt struct { + mc *mysqlConn + id uint32 + paramCount int + columns []mysqlField // cached from the first query +} + +func (stmt *mysqlStmt) Close() error { + if stmt.mc == nil || stmt.mc.netConn == nil { + errLog.Print(ErrInvalidConn) + return driver.ErrBadConn + } + + err := stmt.mc.writeCommandPacketUint32(comStmtClose, stmt.id) + stmt.mc = nil + return err +} + +func (stmt *mysqlStmt) NumInput() int { + return stmt.paramCount +} + +func (stmt *mysqlStmt) ColumnConverter(idx int) driver.ValueConverter { + return converter{} +} + +func (stmt *mysqlStmt) Exec(args []driver.Value) (driver.Result, error) { + if stmt.mc.netConn == nil { + errLog.Print(ErrInvalidConn) + return nil, driver.ErrBadConn + } + // Send command + err := stmt.writeExecutePacket(args) + if err != nil { + return nil, err + } + + mc := stmt.mc + + mc.affectedRows = 0 + mc.insertId = 0 + + // Read Result + resLen, err := mc.readResultSetHeaderPacket() + if err == nil { + if resLen > 0 { + // Columns + err = mc.readUntilEOF() + if err != nil { + return nil, err + } + + // Rows + err = mc.readUntilEOF() + } + if err == nil { + return &mysqlResult{ + affectedRows: int64(mc.affectedRows), + insertId: int64(mc.insertId), + }, nil + } + } + + return nil, err +} + +func (stmt *mysqlStmt) Query(args []driver.Value) (driver.Rows, error) { + if stmt.mc.netConn == nil { + errLog.Print(ErrInvalidConn) + return nil, driver.ErrBadConn + } + // Send command + err := stmt.writeExecutePacket(args) + if err != nil { + return nil, err + } + + mc := stmt.mc + + // Read Result + resLen, err := mc.readResultSetHeaderPacket() + if err != nil { + return nil, err + } + + rows := new(binaryRows) + rows.mc = mc + + if resLen > 0 { + // Columns + // If not cached, read them and cache them + if stmt.columns == nil { + rows.columns, err = mc.readColumns(resLen) + stmt.columns = rows.columns + } else { + rows.columns = stmt.columns + err = mc.readUntilEOF() + } + } + + return rows, err +} + +type converter struct{} + +func (converter) ConvertValue(v interface{}) (driver.Value, error) { + if driver.IsValue(v) { + return v, nil + } + + rv := reflect.ValueOf(v) + switch rv.Kind() { + case reflect.Ptr: + // indirect pointers + if rv.IsNil() { + return nil, nil + } + return driver.DefaultParameterConverter.ConvertValue(rv.Elem().Interface()) + case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64: + return rv.Int(), nil + case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32: + return int64(rv.Uint()), nil + case reflect.Uint64: + u64 := rv.Uint() + if u64 >= 1<<63 { + return fmt.Sprintf("%d", u64), nil + } + return int64(u64), nil + case reflect.Float32, reflect.Float64: + return rv.Float(), nil + } + return nil, fmt.Errorf("unsupported type %T, a %s", v, rv.Kind()) +} -- cgit v1.2.3-1-g7c22