support pinyin for product

src/main/java/db/migration/timiserver/V78__backfill_gao_product_pinyin_search.java

@@ -0,0 +1,55 @@
+package db.migration.timiserver;
+
+import com.imyeyu.api.util.PinyinUtil;
+import org.flywaydb.core.api.migration.BaseJavaMigration;
+import org.flywaydb.core.api.migration.Context;
+
+import java.sql.Connection;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+
+/// 回填 GAO 产品名称拼音搜索字段
+///
+/// @author Codex
+/// @since 2026-09-10
+public class V78__backfill_gao_product_pinyin_search extends BaseJavaMigration {
+
+	private static final int BATCH_SIZE = 500;
+
+	@Override
+	public void migrate(Context context) throws Exception {
+		Connection connection = context.getConnection();
+		try (
+			PreparedStatement select = connection.prepareStatement("""
+				SELECT `id`, `name`
+				FROM `gao_product`
+				WHERE `name` IS NOT NULL
+					AND (`name_pinyin_full` IS NULL OR `name_pinyin_initial` IS NULL OR `name_pinyin_mixed` IS NULL)
+				""");
+			PreparedStatement update = connection.prepareStatement("""
+				UPDATE `gao_product`
+				SET `name_pinyin_full` = ?, `name_pinyin_initial` = ?, `name_pinyin_mixed` = ?
+				WHERE `id` = ?
+				""")) {
+			try (ResultSet resultSet = select.executeQuery()) {
+				int batchSize = 0;
+				while (resultSet.next()) {
+					String name = resultSet.getString("name");
+					update.setString(1, PinyinUtil.full(name));
+					update.setString(2, PinyinUtil.initial(name));
+					update.setString(3, PinyinUtil.mixed(name));
+					update.setString(4, resultSet.getString("id"));
+					update.addBatch();
+					batchSize++;
+					if (batchSize >= BATCH_SIZE) {
+						update.executeBatch();
+						batchSize = 0;
+					}
+				}
+				if (0 < batchSize) {
+					update.executeBatch();
+				}
+			}
+		}
+	}
+}