Initial privatization of stmtcache

ConnConfig.BuildStatementCache is pending removal once connections
always have separate caches for prepared and described statements.

batch_test.go

@@ -7,8 +7,8 @@ import (
 	"testing"
 
 	"github.com/jackc/pgx/v5"
+	"github.com/jackc/pgx/v5/internal/stmtcache"
 	"github.com/jackc/pgx/v5/pgconn"
-	"github.com/jackc/pgx/v5/pgconn/stmtcache"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 )

bench_test.go

@@ -13,8 +13,8 @@ import (
 	"time"
 
 	"github.com/jackc/pgx/v5"
+	"github.com/jackc/pgx/v5/internal/stmtcache"
 	"github.com/jackc/pgx/v5/pgconn"
-	"github.com/jackc/pgx/v5/pgconn/stmtcache"
 	"github.com/jackc/pgx/v5/pgtype"
 	"github.com/stretchr/testify/require"
 )

conn.go

@@ -10,8 +10,8 @@ import (
 
 	"github.com/jackc/pgx/v5/internal/anynil"
 	"github.com/jackc/pgx/v5/internal/sanitize"
+	"github.com/jackc/pgx/v5/internal/stmtcache"
 	"github.com/jackc/pgx/v5/pgconn"
-	"github.com/jackc/pgx/v5/pgconn/stmtcache"
 	"github.com/jackc/pgx/v5/pgproto3"
 	"github.com/jackc/pgx/v5/pgtype"
 )
@@ -381,9 +381,6 @@ func (c *Conn) Ping(ctx context.Context) error {
 // is used and the connection must be returned to the same state before any *pgx.Conn methods are again used.
 func (c *Conn) PgConn() *pgconn.PgConn { return c.pgConn }
 
-// StatementCache returns the statement cache used for this connection.
-func (c *Conn) StatementCache() stmtcache.Cache { return c.stmtcache }
-
 // TypeMap returns the connection info used for this connection.
 func (c *Conn) TypeMap() *pgtype.Map { return c.typeMap }
 

conn_test.go

@@ -9,8 +9,8 @@ import (
 	"time"
 
 	"github.com/jackc/pgx/v5"
+	"github.com/jackc/pgx/v5/internal/stmtcache"
 	"github.com/jackc/pgx/v5/pgconn"
-	"github.com/jackc/pgx/v5/pgconn/stmtcache"
 	"github.com/jackc/pgx/v5/pgtype"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"

internal/stmtcache/lru_test.go

@@ -9,8 +9,8 @@ import (
 	"testing"
 	"time"
 
+	"github.com/jackc/pgx/v5/internal/stmtcache"
 	"github.com/jackc/pgx/v5/pgconn"
-	"github.com/jackc/pgx/v5/pgconn/stmtcache"
 
 	"github.com/stretchr/testify/require"
 )

pgbouncer_test.go

@@ -6,8 +6,8 @@ import (
 	"testing"
 
 	"github.com/jackc/pgx/v5"
+	"github.com/jackc/pgx/v5/internal/stmtcache"
 	"github.com/jackc/pgx/v5/pgconn"
-	"github.com/jackc/pgx/v5/pgconn/stmtcache"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 )

query_test.go

@@ -13,8 +13,8 @@ import (
 	"time"
 
 	"github.com/jackc/pgx/v5"
+	"github.com/jackc/pgx/v5/internal/stmtcache"
 	"github.com/jackc/pgx/v5/pgconn"
-	"github.com/jackc/pgx/v5/pgconn/stmtcache"
 	"github.com/jackc/pgx/v5/pgtype"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"