From b37dbde2b36d2a1984b435e8493f620cc7645684 Mon Sep 17 00:00:00 2001
From: ZhouXY108 <luquanlion@outlook.com>
Date: Wed, 27 May 2026 03:53:39 +0800
Subject: [PATCH] =?UTF-8?q?refactor:=20=E7=A7=BB=E9=99=A4=20`JdbcOperation?=
 =?UTF-8?q?Support#queryFirstBoolean`=20=E6=96=B9=E6=B3=95?=
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移除了 `JdbcOperationSupport` 中的 `queryFirstBoolean` 静态方法，
统一使用 `queryFirst` 方法配合 `Boolean.class` 进行类型转换。
---
 .../xyz/zhouxy/jdbc/JdbcOperationSupport.java     | 15 ---------------
 .../java/xyz/zhouxy/jdbc/SimpleJdbcTemplate.java  |  5 +++--
 2 files changed, 3 insertions(+), 17 deletions(-)

diff --git a/src/main/java/xyz/zhouxy/jdbc/JdbcOperationSupport.java b/src/main/java/xyz/zhouxy/jdbc/JdbcOperationSupport.java
index 2a56ed6..a2ccefc 100644
--- a/src/main/java/xyz/zhouxy/jdbc/JdbcOperationSupport.java
+++ b/src/main/java/xyz/zhouxy/jdbc/JdbcOperationSupport.java
@@ -146,21 +146,6 @@ class JdbcOperationSupport {
         return queryFirstInternal(conn, sql, params, (rs, rowNumber) -> rs.getObject(1, clazz));
     }
 
-    /**
-     * 查询第一行第一列并转换为 boolean
-     *
-     * <p>
-     * <b>注：如果查询结果为空，则返回 {@code false}。</b>
-     *
-     * @param conn   数据库连接
-     * @param sql    SQL
-     * @param params 参数
-     */
-    static Boolean queryFirstBoolean(Connection conn, String sql, Object[] params)
-            throws SQLException {
-        return queryFirst(conn, sql, params, (rs, rowNumber) -> rs.getBoolean(1));
-    }
-
     // #endregion
 
     // #region - update & batchUpdate
diff --git a/src/main/java/xyz/zhouxy/jdbc/SimpleJdbcTemplate.java b/src/main/java/xyz/zhouxy/jdbc/SimpleJdbcTemplate.java
index 37ac86f..6ec96de 100644
--- a/src/main/java/xyz/zhouxy/jdbc/SimpleJdbcTemplate.java
+++ b/src/main/java/xyz/zhouxy/jdbc/SimpleJdbcTemplate.java
@@ -133,7 +133,7 @@ public class SimpleJdbcTemplate implements JdbcOperations {
             throws SQLException {
         try (Connection conn = this.dataSource.getConnection()) {
             final Boolean result = JdbcOperationSupport
-                    .queryFirstBoolean(conn, sql, params);
+                    .queryFirst(conn, sql, params, Boolean.class);
             return Boolean.TRUE.equals(result);
         }
     }
@@ -339,7 +339,8 @@ public class SimpleJdbcTemplate implements JdbcOperations {
         @Override
         public boolean queryBoolean(String sql, Object[] params)
                 throws SQLException {
-            final Boolean result = JdbcOperationSupport.queryFirstBoolean(this.conn, sql, params);
+            final Boolean result = JdbcOperationSupport
+                    .queryFirst(this.conn, sql, params, Boolean.class);
             return Boolean.TRUE.equals(result);
         }