sketch暂时修改为java端推荐，根据style进行推荐

src/main/resources/mapper/primary/WorkspaceMapper.xml

@@ -27,5 +27,10 @@
     <select id="selectWorkspacePage" resultMap="BaseResultMap">
         select * from workspace where is_deleted = 0
     </select>
+    <select id="getStyleByProjectId" resultType="java.lang.String">
+        select name from style where id =
+        (select style_id from workspace_rel_style where workspace_id =
+        (select id from workspace where project_id = #{projectId}))
+    </select>
 
 </mapper>

src/main/resources/mapper/secondary/AttributeRetrievalMapper.xml

@@ -110,4 +110,21 @@
             ${tableName}
         WHERE img_name = #{replace}
     </select>
+    <select id="getCountByStyle" resultType="java.lang.Integer">
+        SELECT
+            count(*)
+        FROM
+            ${tableName}
+        WHERE style = #{style} and deprecated = 0
+    </select>
+
+    <select id="getOneSystemSketchRadom" resultType="java.lang.String">
+        SELECT
+            img_name
+        FROM
+            ${tableName}
+        WHERE style = #{style}
+        and deprecated = 0
+        ORDER BY ID LIMIT #{randomNum},1
+    </select>
 </mapper>