From ce74b627d0df93da3469e12bc37ec07685b1a715 Mon Sep 17 00:00:00 2001
From: godotg <jaysunxiao.gmail.com>
Date: Sun, 17 Jul 2022 11:13:09 +0800
Subject: [PATCH] =?UTF-8?q?perf[entity]:=20=E7=AE=80=E5=8C=96IEntity?=
 =?UTF-8?q?=E7=9A=84=E6=98=AF=E5=90=A6=E4=B8=BA=E7=A9=BA=E7=9A=84=E5=88=A4?=
 =?UTF-8?q?=E6=96=AD?=
MIME-Version: 1.0
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---
 .../java/com/zfoo/orm/model/entity/IEntity.java    | 14 +++++---------
 1 file changed, 5 insertions(+), 9 deletions(-)

diff --git a/orm/src/main/java/com/zfoo/orm/model/entity/IEntity.java b/orm/src/main/java/com/zfoo/orm/model/entity/IEntity.java
index d6739b8b..a15dbb2f 100644
--- a/orm/src/main/java/com/zfoo/orm/model/entity/IEntity.java
+++ b/orm/src/main/java/com/zfoo/orm/model/entity/IEntity.java
@@ -51,22 +51,18 @@ public interface IEntity<PK extends Comparable<PK>> {
     /**
      * 由于查询不存在时缓存中也会有一份，因此判断为空需要根据实际类型才能决定
      *
-     * @return
+     * @return EntityCaches中取出的值在数据库中是否存在
      */
     default boolean isNull() {
         PK idValue = id();
         if (idValue == null) {
             return true;
         }
-        if (idValue instanceof Integer) {
-            return idValue.equals(0);
-        }
-        if (idValue instanceof Long) {
-            return idValue.equals(0L);
-        }
-        if (idValue instanceof String) {
+        // id在启动的时候做过校验，只能是int long float double String几种类型
+        if (idValue instanceof Number) {
+            return ((Number) idValue).doubleValue() == 0D;
+        } else {
             return StringUtils.isEmpty((CharSequence) idValue);
         }
-        return false;
     }
 }