optimized: 优化警告

mybatis-plus-core/src/main/java/com/baomidou/mybatisplus/core/conditions/AbstractWrapper.java

@@ -42,7 +42,7 @@ import static java.util.stream.Collectors.joining;
  * @author hubin miemie HCL
  * @since 2017-05-26
  */
-@SuppressWarnings({"serial", "unchecked"})
+@SuppressWarnings({"unchecked"})
 public abstract class AbstractWrapper<T, R, Children extends AbstractWrapper<T, R, Children>> extends Wrapper<T>
     implements Compare<Children, R>, Nested<Children, Children>, Join<Children>, Func<Children, R> {
 
@@ -441,6 +441,7 @@ public abstract class AbstractWrapper<T, R, Children extends AbstractWrapper<T,
      * @param params  参数
      * @return sql片段
      */
+    @SuppressWarnings("SameParameterValue")
     protected final String formatSqlMaybeWithParam(String sqlStr, String mapping, Object... params) {
         if (StringUtils.isBlank(sqlStr)) {
             // todo 何时会这样?
@@ -581,6 +582,7 @@ public abstract class AbstractWrapper<T, R, Children extends AbstractWrapper<T,
      * @param paramAlias 参数别名
      * @return Children
      */
+    @SuppressWarnings("unused")
     public Children setParamAlias(String paramAlias) {
         Assert.notEmpty(paramAlias, "paramAlias can not be empty!");
         Assert.isEmpty(paramNameValuePairs, "Please call this method before working!");
@@ -616,7 +618,6 @@ public abstract class AbstractWrapper<T, R, Children extends AbstractWrapper<T,
      *
      * @param columns 多字段
      */
-    @Deprecated
     protected String columnsToString(List<R> columns) {
         return columns.stream().map(this::columnToString).collect(joining(StringPool.COMMA));
     }