From d776afb2e4def12dcccb325d1e271c9aa347e13e Mon Sep 17 00:00:00 2001
From: sentriz <senan@senan.xyz>
Date: Tue, 27 Aug 2024 14:55:42 +0100
Subject: [PATCH] Memoise NewTable

a

e
---
 table.go | 27 +++++++++++++++++++++++++--
 1 file changed, 25 insertions(+), 2 deletions(-)

diff --git a/table.go b/table.go
index 4cdff43..64a5769 100644
--- a/table.go
+++ b/table.go
@@ -1,13 +1,30 @@
 package crud
 
 import (
+	"reflect"
+	"sync"
+
 	"github.com/azer/crud/v2/meta"
 	"github.com/azer/crud/v2/sql"
 )
 
+var (
+	tableCache   = map[reflect.Type]*Table{}
+	tableCacheMu sync.RWMutex
+)
+
 // Create an internal representation of a database table, including its fields from given
 // struct record
 func NewTable(any interface{}) (*Table, error) {
+	anyT := reflect.TypeOf(any)
+
+	tableCacheMu.RLock()
+	if t, ok := tableCache[anyT]; ok {
+		tableCacheMu.RUnlock()
+		return t, nil
+	}
+	tableCacheMu.RUnlock()
+
 	if meta.IsSlice(any) {
 		any = meta.CreateElement(any).Interface()
 	}
@@ -21,11 +38,17 @@ func NewTable(any interface{}) (*Table, error) {
 
 	name, sqlName := ReadTableName(any)
 
-	return &Table{
+	t := &Table{
 		Name:    name,
 		SQLName: sqlName,
 		Fields:  fields,
-	}, nil
+	}
+
+	tableCacheMu.Lock()
+	tableCache[anyT] = t
+	tableCacheMu.Unlock()
+
+	return t, nil
 }
 
 type Table struct {