From fb2a6e97aa9e9207faa5c7fcbc25acf0b399874a Mon Sep 17 00:00:00 2001 From: kanghailin <1227734668@qq.com> Date: Mon, 13 Mar 2023 11:10:02 +0800 Subject: [PATCH] Optimize the code in TypeAliasRegistry --- .../org/apache/ibatis/type/TypeAliasRegistry.java | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) diff --git a/src/main/java/org/apache/ibatis/type/TypeAliasRegistry.java b/src/main/java/org/apache/ibatis/type/TypeAliasRegistry.java index 713e9bc9fa4..d2a1607b375 100644 --- a/src/main/java/org/apache/ibatis/type/TypeAliasRegistry.java +++ b/src/main/java/org/apache/ibatis/type/TypeAliasRegistry.java @@ -161,11 +161,14 @@ public void registerAlias(String alias, Class value) { } // issue #748 String key = alias.toLowerCase(Locale.ENGLISH); - if (typeAliases.containsKey(key) && typeAliases.get(key) != null && !typeAliases.get(key).equals(value)) { - throw new TypeException( - "The alias '" + alias + "' is already mapped to the value '" + typeAliases.get(key).getName() + "'."); + Class cls = typeAliases.get(key); + if (cls != null) { + if (!cls.equals(value)) { + throw new TypeException("The alias '" + alias + "' is already mapped to the value '" + cls.getName() + "'."); + } + } else { + typeAliases.put(key, value); } - typeAliases.put(key, value); } public void registerAlias(String alias, String value) {