增加 平均值的批量处理方法

src/main/java/com/njcn/influx/constant/InfluxDbSqlConstant.java

@@ -86,6 +86,7 @@ public interface InfluxDbSqlConstant {
     String MAX = "MAX";
     String MIN = "MIN";
     String AVG = "MEAN";
+    String CP95 = "CP95";
     String MEDIAN = "MEDIAN";
     String MODE = "MODE";
     String SPREAD = "SPREAD";

src/main/java/com/njcn/influx/query/InfluxQueryWrapper.java

@@ -132,6 +132,7 @@ public class InfluxQueryWrapper {
         }
         return this;
     }
+
     public <T, R> InfluxQueryWrapper select(String columnName, String resultColumnName) {
         StringBuilder selectFragment = new StringBuilder();
 
@@ -172,7 +173,6 @@ public class InfluxQueryWrapper {
 //    }
 
 
-
     /************常见的简单函数处理比如max/min/mean/percentile****************/
 
     /***
@@ -267,7 +267,7 @@ public class InfluxQueryWrapper {
         return this;
     }
 
-    public <T, R> InfluxQueryWrapper mean(String columnName) {
+    public InfluxQueryWrapper mean(String columnName) {
         String selectFragment = InfluxDbSqlConstant.AVG +
                 InfluxDbSqlConstant.LBK +
                 InfluxDbSqlConstant.DQM +
@@ -281,6 +281,25 @@ public class InfluxQueryWrapper {
         return this;
     }
 
+    /***
+     * 批量获取指定字段平均值
+     * @author hongawen
+     * @param prefix 表字段名
+     * @param suffix 映射名称
+     * @return InfluxQueryWrapper
+     * 输出 mean(prefix+diffContent+suffix) as prefix+diffContent+suffix
+     */
+    public InfluxQueryWrapper meanSamePrefixAndSuffix(String prefix, String suffix, List<Object> diffContent) {
+        if (CollectionUtil.isEmpty(diffContent)) {
+            throw new RuntimeException("查询数值集合为空，请校验！");
+        }
+        for (Object obj : diffContent) {
+            String fieldName = prefix + obj + suffix;
+            this.mean(fieldName);
+        }
+        return this;
+    }
+
 
     /***
      * 统计中位数