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query.sql.go
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query.sql.go
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// Code generated by pggen. DO NOT EDIT.
package syntax
import (
"context"
"fmt"
"github.com/jackc/pgconn"
"github.com/jackc/pgtype"
"github.com/jackc/pgx/v4"
)
// Querier is a typesafe Go interface backed by SQL queries.
//
// Methods ending with Batch enqueue a query to run later in a pgx.Batch. After
// calling SendBatch on pgx.Conn, pgxpool.Pool, or pgx.Tx, use the Scan methods
// to parse the results.
type Querier interface {
// Query to test escaping in generated Go.
Backtick(ctx context.Context) (string, error)
// BacktickBatch enqueues a Backtick query into batch to be executed
// later by the batch.
BacktickBatch(batch genericBatch)
// BacktickScan scans the result of an executed BacktickBatch query.
BacktickScan(results pgx.BatchResults) (string, error)
// Query to test escaping in generated Go.
BacktickQuoteBacktick(ctx context.Context) (string, error)
// BacktickQuoteBacktickBatch enqueues a BacktickQuoteBacktick query into batch to be executed
// later by the batch.
BacktickQuoteBacktickBatch(batch genericBatch)
// BacktickQuoteBacktickScan scans the result of an executed BacktickQuoteBacktickBatch query.
BacktickQuoteBacktickScan(results pgx.BatchResults) (string, error)
// Query to test escaping in generated Go.
BacktickNewline(ctx context.Context) (string, error)
// BacktickNewlineBatch enqueues a BacktickNewline query into batch to be executed
// later by the batch.
BacktickNewlineBatch(batch genericBatch)
// BacktickNewlineScan scans the result of an executed BacktickNewlineBatch query.
BacktickNewlineScan(results pgx.BatchResults) (string, error)
// Query to test escaping in generated Go.
BacktickDoubleQuote(ctx context.Context) (string, error)
// BacktickDoubleQuoteBatch enqueues a BacktickDoubleQuote query into batch to be executed
// later by the batch.
BacktickDoubleQuoteBatch(batch genericBatch)
// BacktickDoubleQuoteScan scans the result of an executed BacktickDoubleQuoteBatch query.
BacktickDoubleQuoteScan(results pgx.BatchResults) (string, error)
// Query to test escaping in generated Go.
BacktickBackslashN(ctx context.Context) (string, error)
// BacktickBackslashNBatch enqueues a BacktickBackslashN query into batch to be executed
// later by the batch.
BacktickBackslashNBatch(batch genericBatch)
// BacktickBackslashNScan scans the result of an executed BacktickBackslashNBatch query.
BacktickBackslashNScan(results pgx.BatchResults) (string, error)
// Illegal names.
IllegalNameSymbols(ctx context.Context, helloWorld string) (IllegalNameSymbolsRow, error)
// IllegalNameSymbolsBatch enqueues a IllegalNameSymbols query into batch to be executed
// later by the batch.
IllegalNameSymbolsBatch(batch genericBatch, helloWorld string)
// IllegalNameSymbolsScan scans the result of an executed IllegalNameSymbolsBatch query.
IllegalNameSymbolsScan(results pgx.BatchResults) (IllegalNameSymbolsRow, error)
// Space after pggen.arg
SpaceAfter(ctx context.Context, space string) (string, error)
// SpaceAfterBatch enqueues a SpaceAfter query into batch to be executed
// later by the batch.
SpaceAfterBatch(batch genericBatch, space string)
// SpaceAfterScan scans the result of an executed SpaceAfterBatch query.
SpaceAfterScan(results pgx.BatchResults) (string, error)
// Enum named 123.
BadEnumName(ctx context.Context) (UnnamedEnum123, error)
// BadEnumNameBatch enqueues a BadEnumName query into batch to be executed
// later by the batch.
BadEnumNameBatch(batch genericBatch)
// BadEnumNameScan scans the result of an executed BadEnumNameBatch query.
BadEnumNameScan(results pgx.BatchResults) (UnnamedEnum123, error)
GoKeyword(ctx context.Context, go_ string) (string, error)
// GoKeywordBatch enqueues a GoKeyword query into batch to be executed
// later by the batch.
GoKeywordBatch(batch genericBatch, go_ string)
// GoKeywordScan scans the result of an executed GoKeywordBatch query.
GoKeywordScan(results pgx.BatchResults) (string, error)
}
type DBQuerier struct {
conn genericConn // underlying Postgres transport to use
types *typeResolver // resolve types by name
}
var _ Querier = &DBQuerier{}
// genericConn is a connection to a Postgres database. This is usually backed by
// *pgx.Conn, pgx.Tx, or *pgxpool.Pool.
type genericConn interface {
// Query executes sql with args. If there is an error the returned Rows will
// be returned in an error state. So it is allowed to ignore the error
// returned from Query and handle it in Rows.
Query(ctx context.Context, sql string, args ...interface{}) (pgx.Rows, error)
// QueryRow is a convenience wrapper over Query. Any error that occurs while
// querying is deferred until calling Scan on the returned Row. That Row will
// error with pgx.ErrNoRows if no rows are returned.
QueryRow(ctx context.Context, sql string, args ...interface{}) pgx.Row
// Exec executes sql. sql can be either a prepared statement name or an SQL
// string. arguments should be referenced positionally from the sql string
// as $1, $2, etc.
Exec(ctx context.Context, sql string, arguments ...interface{}) (pgconn.CommandTag, error)
}
// genericBatch batches queries to send in a single network request to a
// Postgres server. This is usually backed by *pgx.Batch.
type genericBatch interface {
// Queue queues a query to batch b. query can be an SQL query or the name of a
// prepared statement. See Queue on *pgx.Batch.
Queue(query string, arguments ...interface{})
}
// NewQuerier creates a DBQuerier that implements Querier. conn is typically
// *pgx.Conn, pgx.Tx, or *pgxpool.Pool.
func NewQuerier(conn genericConn) *DBQuerier {
return NewQuerierConfig(conn, QuerierConfig{})
}
type QuerierConfig struct {
// DataTypes contains pgtype.Value to use for encoding and decoding instead
// of pggen-generated pgtype.ValueTranscoder.
//
// If OIDs are available for an input parameter type and all of its
// transitive dependencies, pggen will use the binary encoding format for
// the input parameter.
DataTypes []pgtype.DataType
}
// NewQuerierConfig creates a DBQuerier that implements Querier with the given
// config. conn is typically *pgx.Conn, pgx.Tx, or *pgxpool.Pool.
func NewQuerierConfig(conn genericConn, cfg QuerierConfig) *DBQuerier {
return &DBQuerier{conn: conn, types: newTypeResolver(cfg.DataTypes)}
}
// WithTx creates a new DBQuerier that uses the transaction to run all queries.
func (q *DBQuerier) WithTx(tx pgx.Tx) (*DBQuerier, error) {
return &DBQuerier{conn: tx}, nil
}
// preparer is any Postgres connection transport that provides a way to prepare
// a statement, most commonly *pgx.Conn.
type preparer interface {
Prepare(ctx context.Context, name, sql string) (sd *pgconn.StatementDescription, err error)
}
// PrepareAllQueries executes a PREPARE statement for all pggen generated SQL
// queries in querier files. Typical usage is as the AfterConnect callback
// for pgxpool.Config
//
// pgx will use the prepared statement if available. Calling PrepareAllQueries
// is an optional optimization to avoid a network round-trip the first time pgx
// runs a query if pgx statement caching is enabled.
func PrepareAllQueries(ctx context.Context, p preparer) error {
if _, err := p.Prepare(ctx, backtickSQL, backtickSQL); err != nil {
return fmt.Errorf("prepare query 'Backtick': %w", err)
}
if _, err := p.Prepare(ctx, backtickQuoteBacktickSQL, backtickQuoteBacktickSQL); err != nil {
return fmt.Errorf("prepare query 'BacktickQuoteBacktick': %w", err)
}
if _, err := p.Prepare(ctx, backtickNewlineSQL, backtickNewlineSQL); err != nil {
return fmt.Errorf("prepare query 'BacktickNewline': %w", err)
}
if _, err := p.Prepare(ctx, backtickDoubleQuoteSQL, backtickDoubleQuoteSQL); err != nil {
return fmt.Errorf("prepare query 'BacktickDoubleQuote': %w", err)
}
if _, err := p.Prepare(ctx, backtickBackslashNSQL, backtickBackslashNSQL); err != nil {
return fmt.Errorf("prepare query 'BacktickBackslashN': %w", err)
}
if _, err := p.Prepare(ctx, illegalNameSymbolsSQL, illegalNameSymbolsSQL); err != nil {
return fmt.Errorf("prepare query 'IllegalNameSymbols': %w", err)
}
if _, err := p.Prepare(ctx, spaceAfterSQL, spaceAfterSQL); err != nil {
return fmt.Errorf("prepare query 'SpaceAfter': %w", err)
}
if _, err := p.Prepare(ctx, badEnumNameSQL, badEnumNameSQL); err != nil {
return fmt.Errorf("prepare query 'BadEnumName': %w", err)
}
if _, err := p.Prepare(ctx, goKeywordSQL, goKeywordSQL); err != nil {
return fmt.Errorf("prepare query 'GoKeyword': %w", err)
}
return nil
}
// UnnamedEnum123 represents the Postgres enum "123".
type UnnamedEnum123 string
const (
UnnamedEnum123InconvertibleEnumName UnnamedEnum123 = "inconvertible_enum_name"
UnnamedEnum123UnnamedLabel1 UnnamedEnum123 = ""
UnnamedEnum123UnnamedLabel2111 UnnamedEnum123 = "111"
UnnamedEnum123UnnamedLabel3 UnnamedEnum123 = "!!"
)
func (u UnnamedEnum123) String() string { return string(u) }
// typeResolver looks up the pgtype.ValueTranscoder by Postgres type name.
type typeResolver struct {
connInfo *pgtype.ConnInfo // types by Postgres type name
}
func newTypeResolver(types []pgtype.DataType) *typeResolver {
ci := pgtype.NewConnInfo()
for _, typ := range types {
if txt, ok := typ.Value.(textPreferrer); ok && typ.OID != unknownOID {
typ.Value = txt.ValueTranscoder
}
ci.RegisterDataType(typ)
}
return &typeResolver{connInfo: ci}
}
// findValue find the OID, and pgtype.ValueTranscoder for a Postgres type name.
func (tr *typeResolver) findValue(name string) (uint32, pgtype.ValueTranscoder, bool) {
typ, ok := tr.connInfo.DataTypeForName(name)
if !ok {
return 0, nil, false
}
v := pgtype.NewValue(typ.Value)
return typ.OID, v.(pgtype.ValueTranscoder), true
}
// setValue sets the value of a ValueTranscoder to a value that should always
// work and panics if it fails.
func (tr *typeResolver) setValue(vt pgtype.ValueTranscoder, val interface{}) pgtype.ValueTranscoder {
if err := vt.Set(val); err != nil {
panic(fmt.Sprintf("set ValueTranscoder %T to %+v: %s", vt, val, err))
}
return vt
}
const backtickSQL = "SELECT '`';"
// Backtick implements Querier.Backtick.
func (q *DBQuerier) Backtick(ctx context.Context) (string, error) {
ctx = context.WithValue(ctx, "pggen_query_name", "Backtick")
row := q.conn.QueryRow(ctx, backtickSQL)
var item string
if err := row.Scan(&item); err != nil {
return item, fmt.Errorf("query Backtick: %w", err)
}
return item, nil
}
// BacktickBatch implements Querier.BacktickBatch.
func (q *DBQuerier) BacktickBatch(batch genericBatch) {
batch.Queue(backtickSQL)
}
// BacktickScan implements Querier.BacktickScan.
func (q *DBQuerier) BacktickScan(results pgx.BatchResults) (string, error) {
row := results.QueryRow()
var item string
if err := row.Scan(&item); err != nil {
return item, fmt.Errorf("scan BacktickBatch row: %w", err)
}
return item, nil
}
const backtickQuoteBacktickSQL = "SELECT '`\"`';"
// BacktickQuoteBacktick implements Querier.BacktickQuoteBacktick.
func (q *DBQuerier) BacktickQuoteBacktick(ctx context.Context) (string, error) {
ctx = context.WithValue(ctx, "pggen_query_name", "BacktickQuoteBacktick")
row := q.conn.QueryRow(ctx, backtickQuoteBacktickSQL)
var item string
if err := row.Scan(&item); err != nil {
return item, fmt.Errorf("query BacktickQuoteBacktick: %w", err)
}
return item, nil
}
// BacktickQuoteBacktickBatch implements Querier.BacktickQuoteBacktickBatch.
func (q *DBQuerier) BacktickQuoteBacktickBatch(batch genericBatch) {
batch.Queue(backtickQuoteBacktickSQL)
}
// BacktickQuoteBacktickScan implements Querier.BacktickQuoteBacktickScan.
func (q *DBQuerier) BacktickQuoteBacktickScan(results pgx.BatchResults) (string, error) {
row := results.QueryRow()
var item string
if err := row.Scan(&item); err != nil {
return item, fmt.Errorf("scan BacktickQuoteBacktickBatch row: %w", err)
}
return item, nil
}
const backtickNewlineSQL = "SELECT '`\n';"
// BacktickNewline implements Querier.BacktickNewline.
func (q *DBQuerier) BacktickNewline(ctx context.Context) (string, error) {
ctx = context.WithValue(ctx, "pggen_query_name", "BacktickNewline")
row := q.conn.QueryRow(ctx, backtickNewlineSQL)
var item string
if err := row.Scan(&item); err != nil {
return item, fmt.Errorf("query BacktickNewline: %w", err)
}
return item, nil
}
// BacktickNewlineBatch implements Querier.BacktickNewlineBatch.
func (q *DBQuerier) BacktickNewlineBatch(batch genericBatch) {
batch.Queue(backtickNewlineSQL)
}
// BacktickNewlineScan implements Querier.BacktickNewlineScan.
func (q *DBQuerier) BacktickNewlineScan(results pgx.BatchResults) (string, error) {
row := results.QueryRow()
var item string
if err := row.Scan(&item); err != nil {
return item, fmt.Errorf("scan BacktickNewlineBatch row: %w", err)
}
return item, nil
}
const backtickDoubleQuoteSQL = "SELECT '`\"';"
// BacktickDoubleQuote implements Querier.BacktickDoubleQuote.
func (q *DBQuerier) BacktickDoubleQuote(ctx context.Context) (string, error) {
ctx = context.WithValue(ctx, "pggen_query_name", "BacktickDoubleQuote")
row := q.conn.QueryRow(ctx, backtickDoubleQuoteSQL)
var item string
if err := row.Scan(&item); err != nil {
return item, fmt.Errorf("query BacktickDoubleQuote: %w", err)
}
return item, nil
}
// BacktickDoubleQuoteBatch implements Querier.BacktickDoubleQuoteBatch.
func (q *DBQuerier) BacktickDoubleQuoteBatch(batch genericBatch) {
batch.Queue(backtickDoubleQuoteSQL)
}
// BacktickDoubleQuoteScan implements Querier.BacktickDoubleQuoteScan.
func (q *DBQuerier) BacktickDoubleQuoteScan(results pgx.BatchResults) (string, error) {
row := results.QueryRow()
var item string
if err := row.Scan(&item); err != nil {
return item, fmt.Errorf("scan BacktickDoubleQuoteBatch row: %w", err)
}
return item, nil
}
const backtickBackslashNSQL = "SELECT '`\\n';"
// BacktickBackslashN implements Querier.BacktickBackslashN.
func (q *DBQuerier) BacktickBackslashN(ctx context.Context) (string, error) {
ctx = context.WithValue(ctx, "pggen_query_name", "BacktickBackslashN")
row := q.conn.QueryRow(ctx, backtickBackslashNSQL)
var item string
if err := row.Scan(&item); err != nil {
return item, fmt.Errorf("query BacktickBackslashN: %w", err)
}
return item, nil
}
// BacktickBackslashNBatch implements Querier.BacktickBackslashNBatch.
func (q *DBQuerier) BacktickBackslashNBatch(batch genericBatch) {
batch.Queue(backtickBackslashNSQL)
}
// BacktickBackslashNScan implements Querier.BacktickBackslashNScan.
func (q *DBQuerier) BacktickBackslashNScan(results pgx.BatchResults) (string, error) {
row := results.QueryRow()
var item string
if err := row.Scan(&item); err != nil {
return item, fmt.Errorf("scan BacktickBackslashNBatch row: %w", err)
}
return item, nil
}
const illegalNameSymbolsSQL = "SELECT '`\\n' as \"$\", $1 as \"foo.bar!@#$%&*()\"\"--+\";"
type IllegalNameSymbolsRow struct {
UnnamedColumn0 string `json:"$"`
FooBar string `json:"foo.bar!@#$%&*()\"--+"`
}
// IllegalNameSymbols implements Querier.IllegalNameSymbols.
func (q *DBQuerier) IllegalNameSymbols(ctx context.Context, helloWorld string) (IllegalNameSymbolsRow, error) {
ctx = context.WithValue(ctx, "pggen_query_name", "IllegalNameSymbols")
row := q.conn.QueryRow(ctx, illegalNameSymbolsSQL, helloWorld)
var item IllegalNameSymbolsRow
if err := row.Scan(&item.UnnamedColumn0, &item.FooBar); err != nil {
return item, fmt.Errorf("query IllegalNameSymbols: %w", err)
}
return item, nil
}
// IllegalNameSymbolsBatch implements Querier.IllegalNameSymbolsBatch.
func (q *DBQuerier) IllegalNameSymbolsBatch(batch genericBatch, helloWorld string) {
batch.Queue(illegalNameSymbolsSQL, helloWorld)
}
// IllegalNameSymbolsScan implements Querier.IllegalNameSymbolsScan.
func (q *DBQuerier) IllegalNameSymbolsScan(results pgx.BatchResults) (IllegalNameSymbolsRow, error) {
row := results.QueryRow()
var item IllegalNameSymbolsRow
if err := row.Scan(&item.UnnamedColumn0, &item.FooBar); err != nil {
return item, fmt.Errorf("scan IllegalNameSymbolsBatch row: %w", err)
}
return item, nil
}
const spaceAfterSQL = `SELECT $1;`
// SpaceAfter implements Querier.SpaceAfter.
func (q *DBQuerier) SpaceAfter(ctx context.Context, space string) (string, error) {
ctx = context.WithValue(ctx, "pggen_query_name", "SpaceAfter")
row := q.conn.QueryRow(ctx, spaceAfterSQL, space)
var item string
if err := row.Scan(&item); err != nil {
return item, fmt.Errorf("query SpaceAfter: %w", err)
}
return item, nil
}
// SpaceAfterBatch implements Querier.SpaceAfterBatch.
func (q *DBQuerier) SpaceAfterBatch(batch genericBatch, space string) {
batch.Queue(spaceAfterSQL, space)
}
// SpaceAfterScan implements Querier.SpaceAfterScan.
func (q *DBQuerier) SpaceAfterScan(results pgx.BatchResults) (string, error) {
row := results.QueryRow()
var item string
if err := row.Scan(&item); err != nil {
return item, fmt.Errorf("scan SpaceAfterBatch row: %w", err)
}
return item, nil
}
const badEnumNameSQL = `SELECT 'inconvertible_enum_name'::"123";`
// BadEnumName implements Querier.BadEnumName.
func (q *DBQuerier) BadEnumName(ctx context.Context) (UnnamedEnum123, error) {
ctx = context.WithValue(ctx, "pggen_query_name", "BadEnumName")
row := q.conn.QueryRow(ctx, badEnumNameSQL)
var item UnnamedEnum123
if err := row.Scan(&item); err != nil {
return item, fmt.Errorf("query BadEnumName: %w", err)
}
return item, nil
}
// BadEnumNameBatch implements Querier.BadEnumNameBatch.
func (q *DBQuerier) BadEnumNameBatch(batch genericBatch) {
batch.Queue(badEnumNameSQL)
}
// BadEnumNameScan implements Querier.BadEnumNameScan.
func (q *DBQuerier) BadEnumNameScan(results pgx.BatchResults) (UnnamedEnum123, error) {
row := results.QueryRow()
var item UnnamedEnum123
if err := row.Scan(&item); err != nil {
return item, fmt.Errorf("scan BadEnumNameBatch row: %w", err)
}
return item, nil
}
const goKeywordSQL = `SELECT $1::text;`
// GoKeyword implements Querier.GoKeyword.
func (q *DBQuerier) GoKeyword(ctx context.Context, go_ string) (string, error) {
ctx = context.WithValue(ctx, "pggen_query_name", "GoKeyword")
row := q.conn.QueryRow(ctx, goKeywordSQL, go_)
var item string
if err := row.Scan(&item); err != nil {
return item, fmt.Errorf("query GoKeyword: %w", err)
}
return item, nil
}
// GoKeywordBatch implements Querier.GoKeywordBatch.
func (q *DBQuerier) GoKeywordBatch(batch genericBatch, go_ string) {
batch.Queue(goKeywordSQL, go_)
}
// GoKeywordScan implements Querier.GoKeywordScan.
func (q *DBQuerier) GoKeywordScan(results pgx.BatchResults) (string, error) {
row := results.QueryRow()
var item string
if err := row.Scan(&item); err != nil {
return item, fmt.Errorf("scan GoKeywordBatch row: %w", err)
}
return item, nil
}
// textPreferrer wraps a pgtype.ValueTranscoder and sets the preferred encoding
// format to text instead binary (the default). pggen uses the text format
// when the OID is unknownOID because the binary format requires the OID.
// Typically occurs if the results from QueryAllDataTypes aren't passed to
// NewQuerierConfig.
type textPreferrer struct {
pgtype.ValueTranscoder
typeName string
}
// PreferredParamFormat implements pgtype.ParamFormatPreferrer.
func (t textPreferrer) PreferredParamFormat() int16 { return pgtype.TextFormatCode }
func (t textPreferrer) NewTypeValue() pgtype.Value {
return textPreferrer{pgtype.NewValue(t.ValueTranscoder).(pgtype.ValueTranscoder), t.typeName}
}
func (t textPreferrer) TypeName() string {
return t.typeName
}
// unknownOID means we don't know the OID for a type. This is okay for decoding
// because pgx call DecodeText or DecodeBinary without requiring the OID. For
// encoding parameters, pggen uses textPreferrer if the OID is unknown.
const unknownOID = 0