database/sql: move from exp/sql

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/5536076

1 files changed, 0 insertions, 207 deletions

diff --git a/src/pkg/exp/sql/driver/driver.go b/src/pkg/exp/sql/driver/driver.go
deleted file mode 100644
index 0cd2562d68..0000000000
--- a/src/pkg/exp/sql/driver/driver.go
+++ /dev/null
@@ -1,207 +0,0 @@
-// Copyright 2011 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// Package driver defines interfaces to be implemented by database
-// drivers as used by package sql.
-//
-// Code simply using databases should use package sql.
-//
-// Drivers only need to be aware of a subset of Go's types.  The sql package
-// will convert all types into one of the following:
-//
-//   int64
-//   float64
-//   bool
-//   nil
-//   []byte
-//   string   [*] everywhere except from Rows.Next.
-//   time.Time
-//
-package driver
-
-import "errors"
-
-// Driver is the interface that must be implemented by a database
-// driver.
-type Driver interface {
-	// Open returns a new connection to the database.
-	// The name is a string in a driver-specific format.
-	//
-	// Open may return a cached connection (one previously
-	// closed), but doing so is unnecessary; the sql package
-	// maintains a pool of idle connections for efficient re-use.
-	//
-	// The returned connection is only used by one goroutine at a
-	// time.
-	Open(name string) (Conn, error)
-}
-
-// ErrSkip may be returned by some optional interfaces' methods to
-// indicate at runtime that the fast path is unavailable and the sql
-// package should continue as if the optional interface was not
-// implemented. ErrSkip is only supported where explicitly
-// documented.
-var ErrSkip = errors.New("driver: skip fast-path; continue as if unimplemented")
-
-// Execer is an optional interface that may be implemented by a Conn.
-//
-// If a Conn does not implement Execer, the db package's DB.Exec will
-// first prepare a query, execute the statement, and then close the
-// statement.
-//
-// All arguments are of a subset type as defined in the package docs.
-//
-// Exec may return ErrSkip.
-type Execer interface {
-	Exec(query string, args []interface{}) (Result, error)
-}
-
-// Conn is a connection to a database. It is not used concurrently
-// by multiple goroutines.
-//
-// Conn is assumed to be stateful.
-type Conn interface {
-	// Prepare returns a prepared statement, bound to this connection.
-	Prepare(query string) (Stmt, error)
-
-	// Close invalidates and potentially stops any current
-	// prepared statements and transactions, marking this
-	// connection as no longer in use.
-	//
-	// Because the sql package maintains a free pool of
-	// connections and only calls Close when there's a surplus of
-	// idle connections, it shouldn't be necessary for drivers to
-	// do their own connection caching.
-	Close() error
-
-	// Begin starts and returns a new transaction.
-	Begin() (Tx, error)
-}
-
-// Result is the result of a query execution.
-type Result interface {
-	// LastInsertId returns the database's auto-generated ID
-	// after, for example, an INSERT into a table with primary
-	// key.
-	LastInsertId() (int64, error)
-
-	// RowsAffected returns the number of rows affected by the
-	// query.
-	RowsAffected() (int64, error)
-}
-
-// Stmt is a prepared statement. It is bound to a Conn and not
-// used by multiple goroutines concurrently.
-type Stmt interface {
-	// Close closes the statement.
-	//
-	// Closing a statement should not interrupt any outstanding
-	// query created from that statement. That is, the following
-	// order of operations is valid:
-	//
-	//  * create a driver statement
-	//  * call Query on statement, returning Rows
-	//  * close the statement
-	//  * read from Rows
-	//
-	// If closing a statement invalidates currently-running
-	// queries, the final step above will incorrectly fail.
-	//
-	// TODO(bradfitz): possibly remove the restriction above, if
-	// enough driver authors object and find it complicates their
-	// code too much. The sql package could be smarter about
-	// refcounting the statement and closing it at the appropriate
-	// time.
-	Close() error
-
-	// NumInput returns the number of placeholder parameters.
-	//
-	// If NumInput returns >= 0, the sql package will sanity check
-	// argument counts from callers and return errors to the caller
-	// before the statement's Exec or Query methods are called.
-	//
-	// NumInput may also return -1, if the driver doesn't know
-	// its number of placeholders. In that case, the sql package
-	// will not sanity check Exec or Query argument counts.
-	NumInput() int
-
-	// Exec executes a query that doesn't return rows, such
-	// as an INSERT or UPDATE.  The args are all of a subset
-	// type as defined above.
-	Exec(args []interface{}) (Result, error)
-
-	// Exec executes a query that may return rows, such as a
-	// SELECT.  The args of all of a subset type as defined above.
-	Query(args []interface{}) (Rows, error)
-}
-
-// ColumnConverter may be optionally implemented by Stmt if the
-// the statement is aware of its own columns' types and can
-// convert from any type to a driver subset type.
-type ColumnConverter interface {
-	// ColumnConverter returns a ValueConverter for the provided
-	// column index.  If the type of a specific column isn't known
-	// or shouldn't be handled specially, DefaultValueConverter
-	// can be returned.
-	ColumnConverter(idx int) ValueConverter
-}
-
-// Rows is an iterator over an executed query's results.
-type Rows interface {
-	// Columns returns the names of the columns. The number of
-	// columns of the result is inferred from the length of the
-	// slice.  If a particular column name isn't known, an empty
-	// string should be returned for that entry.
-	Columns() []string
-
-	// Close closes the rows iterator.
-	Close() error
-
-	// Next is called to populate the next row of data into
-	// the provided slice. The provided slice will be the same
-	// size as the Columns() are wide.
-	//
-	// The dest slice may be populated with only with values
-	// of subset types defined above, but excluding string.
-	// All string values must be converted to []byte.
-	//
-	// Next should return io.EOF when there are no more rows.
-	Next(dest []interface{}) error
-}
-
-// Tx is a transaction.
-type Tx interface {
-	Commit() error
-	Rollback() error
-}
-
-// RowsAffected implements Result for an INSERT or UPDATE operation
-// which mutates a number of rows.
-type RowsAffected int64
-
-var _ Result = RowsAffected(0)
-
-func (RowsAffected) LastInsertId() (int64, error) {
-	return 0, errors.New("no LastInsertId available")
-}
-
-func (v RowsAffected) RowsAffected() (int64, error) {
-	return int64(v), nil
-}
-
-// DDLSuccess is a pre-defined Result for drivers to return when a DDL
-// command succeeds.
-var DDLSuccess ddlSuccess
-
-type ddlSuccess struct{}
-
-var _ Result = ddlSuccess{}
-
-func (ddlSuccess) LastInsertId() (int64, error) {
-	return 0, errors.New("no LastInsertId available after DDL statement")
-}
-
-func (ddlSuccess) RowsAffected() (int64, error) {
-	return 0, errors.New("no RowsAffected available after DDL statement")
-}