--no commit message

app/sysuser/src/main/java/com/zrqx/sysuser/bg/service/propaganda/PropagandaColumnServiceImpl.java

 package com.zrqx.sysuser.bg.service.propaganda;
 
+import java.util.ArrayList;
+import java.util.Comparator;
+import java.util.List;
+
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 
 import com.zrqx.core.mapper.BaseMapper;
 import com.zrqx.core.service.BaseServiceImpl;
+import com.zrqx.core.util.datatype.ArrayUtils;
 import com.zrqx.sysuser.bg.mapper.propaganda.PropagandaColumnMapper;
 import com.zrqx.sysuser.commons.model.propaganda.PropagandaColumn;
 
@@ -20,5 +25,15 @@ public class PropagandaColumnServiceImpl extends BaseServiceImpl<PropagandaColum
 	public BaseMapper<PropagandaColumn> getMapper() {
 		return mapper;
 	}
+	@Override
+	public Integer selectMax() {
+		List<PropagandaColumn> list = mapper.selectAll();
+		if (ArrayUtils.isNotEmpty(list)) {
+			list.stream().sorted(Comparator.comparing(PropagandaColumn :: getSort, Comparator.reverseOrder()));
+			Integer sort = list.get(0).getSort();
+			return sort;
+		}
+		return 0;
+	}
 
 }