公式相关：chart-init

blade-service/blade-manager/src/main/java/com/mixsmart/utils/FormulaUtils.java

@@ -1,9 +1,11 @@
 package com.mixsmart.utils;
 
 
+import cn.hutool.log.StaticLog;
 import com.alibaba.fastjson.JSONArray;
 import com.alibaba.fastjson.JSONObject;
 
+import com.jfireel.expression.Expression;
 import org.apache.poi.hssf.usermodel.HSSFDataFormatter;
 import org.apache.poi.openxml4j.exceptions.InvalidFormatException;
 import org.apache.poi.ss.usermodel.*;
@@ -23,6 +25,7 @@ import org.jfree.data.xy.DefaultXYDataset;
 import org.jfree.data.xy.XYSeries;
 import org.jfree.data.xy.XYSeriesCollection;
 import org.jsoup.Jsoup;
+import org.springblade.core.tool.utils.CollectionUtil;
 import org.springblade.core.tool.utils.Func;
 import org.springblade.core.tool.utils.IoUtil;
 import org.springblade.core.tool.utils.StringPool;
@@ -30,6 +33,7 @@ import org.springblade.manager.bean.TableInfo;
 import org.springblade.manager.dto.Coords;
 import org.springblade.manager.dto.ElementData;
 import org.springblade.manager.dto.FormData;
+import org.springblade.manager.dto.LocalVariable;
 import org.springblade.manager.entity.Formula;
 import org.springblade.manager.utils.FileUtils;
 
@@ -607,6 +611,53 @@ public class FormulaUtils {
            return coords;
      }
 
+    public static List<Object> slice(List<LocalVariable>  local, String formula){
+        int min =0;
+        List<Object> result = new ArrayList<>();
+        try {
+            pretreatment(local,formula);
+            List<Object>  r= local.stream().map(e-> {
+                /*所有依赖元素的内容必须非空才进行计算，否则返回空值*/
+                return e.hasEmptyElementValue()?"": Expression.parse(e.getFormula()).calculate(e.getCurrentMap());
+            }).collect(Collectors.toList());
+            if(CollectionUtil.isNotEmpty(r)&&r.stream().anyMatch(StringUtils::isNotEmpty)){
+                result.addAll(r);
+            }
+        }catch (Exception e){
+            StaticLog.error("公式：{}，执行出错",formula);
+        }
+        return  result;
+    }
+
+    public static void  pretreatment(List<LocalVariable>  local,String formula){
+        formula=StringUtils.removeMultiSpace(formula);
+        if(formula.contains("LIST")){
+            Matcher  m=RegexUtils.matcher("\\(([^)]*)\\)/LIST",formula);
+            while (m.find()){
+                List<String> codes=getCodeList(m.group(1).replaceAll("[+-]",","));
+                local=local.stream().peek(e->{
+                    @SuppressWarnings("unckecked")
+                    Map<String,Object> map = (Map<String, Object>) e.getCurrentMap().getOrDefault("E",new HashMap<>());
+                    int listSize=(int)codes.stream().filter(c->StringUtils.isNotEmpty(map.get(c))).count();
+                    if(listSize<=0||listSize>codes.size()){
+                        listSize=codes.size();
+                    }
+                    map.put("LIST",listSize);
+                }).collect(Collectors.toList());
+            }
+        }
+    }
+    /*从方法参数中获取全部code*/
+    public static List<String> getCodeList(String param){
+        List<String> list = new ArrayList<>();
+        if(StringUtils.isNotEmpty(param)){
+            Arrays.stream(param.split(",")).forEach(s->{
+                list.add(s.replaceAll("[E\\[\\]']",""));
+            });
+        }
+        return list;
+    }
+
     public static FormData createFormDataFast(String name,String code,String values,String coords){
         if(StringUtils.isNotEmpty(code,name)){
             //String[] arr=code.split(":");

blade-service/blade-manager/src/main/java/org/springblade/manager/controller/FormulaController.java

@@ -4,6 +4,7 @@ import com.alibaba.fastjson.JSON;
 import com.alibaba.fastjson.JSONArray;
 import com.alibaba.fastjson.JSONObject;
 import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
+import com.baomidou.mybatisplus.core.conditions.update.LambdaUpdateWrapper;
 import com.baomidou.mybatisplus.core.metadata.IPage;
 import com.baomidou.mybatisplus.core.toolkit.Wrappers;
 import com.github.xiaoymin.knife4j.annotations.ApiOperationSupport;
@@ -28,6 +29,7 @@ import org.springblade.manager.dto.*;
 import org.springblade.manager.entity.*;
 import org.springblade.manager.enums.ExecuteType;
 import org.springblade.manager.formula.KeyMapper;
+import org.springblade.manager.formula.impl.CompositeDataAccess;
 import org.springblade.manager.service.*;
 import org.springblade.manager.service.impl.FormulaServiceImpl;
 import org.springblade.manager.vo.AppWbsTreeContractVO;
@@ -497,6 +499,83 @@ public class FormulaController {
         return R.data(map);
     }
 
+  /*  public R<Object> chartInit(@RequestBody ChartOption option){
+        *//*1.获取公式配置，如果存在子公式，则一直查找到最终公式*//*
+        *//*2.查找所有依赖元素的所有数据，按表单排序*//*
+        *//*3.计算结果*//*
+        *//*4.查找当前表对应返回配置模版结合计算结果生成option*//*
+        Long pkeyId=option.getPkeyId();
+        String id=option.getId();
+        WbsTreePrivate wtp = this.wbsTreePrivateService.getOne(Wrappers.<WbsTreePrivate>lambdaQuery().eq(WbsTreePrivate::getPKeyId,pkeyId));
+        if(wtp!=null&&Func.isNotEmpty(id)){
+            *//*获取配置*//*
+            List<Map<String,Object>> listMap= this.jdbcTemplate.queryForList("select content from m_formula_panel  a  join m_wbs_tree_private b on a.id=b.init_table_id where b.p_key_id="+pkeyId);
+            if(Func.isNotEmpty(listMap)){
+                JSONObject job = JSON.parseObject(listMap.get(0).get("content").toString());
+                *//*获取关联数据*//*
+                List<Map<String,Object>>  configList= this.jdbcTemplate.queryForList("select d.rely ,b.e_key ekey from m_wbs_tree_private a join  m_wbs_form_element b on a.init_table_id=b.f_id join m_element_formula_mapping c on b.id=c.element_id join m_formula d on c.formula_id=d.id  where p_key_id="+wtp.getPKeyId()+" and b.is_deleted=0 and  d.formula like 'FC.chart%' limit 1");
+                if(Func.isNotEmpty(configList)){
+                    Map<String,Object> config =configList.get(0);
+                    String[] rely = Func.toStr(config.get("rely")).split(",");
+                    String ky=rely[0].split(":")[1];
+                    String kx=rely[1].split(":")[1];
+                    Map<String,Map<String,Object>> formMap = option.getData();
+                    List<Map<String,Object>> dataMap;
+                    if(formMap!=null&&formMap.size()>0){
+                        dataMap=new ArrayList<>();
+                        Map<String,Object> md= new HashMap<>();
+                        dataMap.add(md);
+                        StringBuilder sy= new StringBuilder();
+                        StringBuilder sx = new StringBuilder();
+                        formMap.forEach((o,t)->{
+                            t.forEach((k,v)->{
+                                String[] ka=k.split("__");
+                                if(ky.equals(ka[0])){
+                                    sy.append(v).append("_^_").append(ka[1]).append("☆");
+                                }else if(kx.equals(ka[0])){
+                                    sx.append(v).append("_^_").append(ka[1]).append("☆");
+                                }
+                            });
+                        });
+                        if(sy.length()>1){
+                            sy.deleteCharAt(sy.length()-1);
+                        }
+                        if(sx.length()>1){
+                            sx.deleteCharAt(sx.length()-1);
+                        }
+                        md.put(ky,sy.toString());
+                        md.put(kx,sx.toString());
+                    }else{
+                        dataMap= this.jdbcTemplate.queryForList("select "+ky+","+kx+" from "+wtp.getInitTableName() +" where group_id="+id+" and p_key_id ="+pkeyId);
+                    }
+                    if(Func.isNotEmpty(dataMap)){
+                        Map<String,Object> data = dataMap.get(0);
+                        String dy= Func.toStr(data.get(ky));
+                        String dx=Func.toStr(data.get(kx));
+                        if(dy.length()>0&&dx.length()>0){
+                            Map<String,String> coordsMap = FormulaUtils.getElementCell(wtp.getHtmlUrl());
+                            List<ElementData> ly = FormulaUtils.getElementDataList(coordsMap.get(ky),dy);
+                            List<ElementData> lx = FormulaUtils.getElementDataList(coordsMap.get(kx),dx);
+                            JSONArray jsonArray =new JSONArray();
+                            for(int i=0;i< Math.min(ly.size(),lx.size());i++){
+                                ElementData edy= ly.get(i);
+                                ElementData edx = lx.get(i);
+                                if(StringUtils.isNotEmpty(edy.stringValue(),edx.stringValue())){
+                                    jsonArray.add(new JSONArray().fluentAdd(edx.numberValue()).fluentAdd(edy.numberValue()));;
+                                }
+                            }
+                            if(!jsonArray.isEmpty()){
+                                JSONObject chartData= job.getJSONArray("series").getJSONObject(0);
+                                chartData.put("data",jsonArray);
+                            }
+                        }
+                    }
+                    return R.data(job);
+                }
+            }
+        }
+        return R.data("{}");
+    }*/
     @PostMapping("/chart-init")
     @ApiOperationSupport(order = 11)
     public R<Object> chartInit(@RequestBody ChartOption option){
@@ -512,64 +591,10 @@ public class FormulaController {
                List<Map<String,Object>> listMap= this.jdbcTemplate.queryForList("select content from m_formula_panel  a  join m_wbs_tree_private b on a.id=b.init_table_id where b.p_key_id="+pkeyId);
                if(Func.isNotEmpty(listMap)){
                    JSONObject job = JSON.parseObject(listMap.get(0).get("content").toString());
-                   /*获取关联数据*/
-                   List<Map<String,Object>>  configList= this.jdbcTemplate.queryForList("select d.rely ,b.e_key ekey from m_wbs_tree_private a join  m_wbs_form_element b on a.init_table_id=b.f_id join m_element_formula_mapping c on b.id=c.element_id join m_formula d on c.formula_id=d.id  where p_key_id="+wtp.getPKeyId()+" and b.is_deleted=0 and  d.formula like 'FC.chart%' limit 1");
-                   if(Func.isNotEmpty(configList)){
-                       Map<String,Object> config =configList.get(0);
-                       String[] rely = Func.toStr(config.get("rely")).split(",");
-                       String ky=rely[0].split(":")[1];
-                       String kx=rely[1].split(":")[1];
-                       Map<String,Map<String,Object>> formMap = option.getData();
-                       List<Map<String,Object>> dataMap;
-                       if(formMap!=null&&formMap.size()>0){
-                           dataMap=new ArrayList<>();
-                           Map<String,Object> md= new HashMap<>();
-                           dataMap.add(md);
-                           StringBuilder sy= new StringBuilder();
-                           StringBuilder sx = new StringBuilder();
-                           formMap.forEach((o,t)->{
-                               t.forEach((k,v)->{
-                                   String[] ka=k.split("__");
-                                   if(ky.equals(ka[0])){
-                                       sy.append(v).append("_^_").append(ka[1]).append("☆");
-                                   }else if(kx.equals(ka[0])){
-                                       sx.append(v).append("_^_").append(ka[1]).append("☆");
-                                   }
-                               });
-                           });
-                           if(sy.length()>1){
-                               sy.deleteCharAt(sy.length()-1);
-                           }
-                           if(sx.length()>1){
-                               sx.deleteCharAt(sx.length()-1);
-                           }
-                           md.put(ky,sy.toString());
-                           md.put(kx,sx.toString());
-                       }else{
-                            dataMap= this.jdbcTemplate.queryForList("select "+ky+","+kx+" from "+wtp.getInitTableName() +" where group_id="+id+" and p_key_id ="+pkeyId);
-                       }
-                       if(Func.isNotEmpty(dataMap)){
-                           Map<String,Object> data = dataMap.get(0);
-                           String dy= Func.toStr(data.get(ky));
-                           String dx=Func.toStr(data.get(kx));
-                           if(dy.length()>0&&dx.length()>0){
-                              Map<String,String> coordsMap = FormulaUtils.getElementCell(wtp.getHtmlUrl());
-                              List<ElementData> ly = FormulaUtils.getElementDataList(coordsMap.get(ky),dy);
-                              List<ElementData> lx = FormulaUtils.getElementDataList(coordsMap.get(kx),dx);
-                              JSONArray jsonArray =new JSONArray();
-                              for(int i=0;i< Math.min(ly.size(),lx.size());i++){
-                                     ElementData edy= ly.get(i);
-                                     ElementData edx = lx.get(i);
-                                     if(StringUtils.isNotEmpty(edy.stringValue(),edx.stringValue())){
-                                         jsonArray.add(new JSONArray().fluentAdd(edx.numberValue()).fluentAdd(edy.numberValue()));;
-                                     }
-                              }
-                              if(!jsonArray.isEmpty()){
-                                  JSONObject chartData= job.getJSONArray("series").getJSONObject(0);
-                                  chartData.put("data",jsonArray);
-                              }
-                           }
-                       }
+                   JSONArray  jsonArray= createSeries(wtp,id);
+                   if(!jsonArray.isEmpty()){
+                       JSONObject chartData= job.getJSONArray("series").getJSONObject(0);
+                       chartData.put("data",jsonArray);
                        return R.data(job);
                    }
                }
@@ -577,7 +602,9 @@ public class FormulaController {
             return R.data("{}");
     }
 
-    public Formula formulaAct(Long pkeyId){
+    public JSONArray createSeries(WbsTreePrivate wtp,String groupId){
+        Long pkeyId =wtp.getPKeyId();
+        JSONArray jsonArray =new JSONArray();
         List<Map<String,Object>>  configList= this.jdbcTemplate.queryForList("select d.rely,d.formula ,b.e_key ekey from m_wbs_tree_private a join  m_wbs_form_element b on a.init_table_id=b.f_id join m_element_formula_mapping c on b.id=c.element_id join m_formula d on c.formula_id=d.id  where p_key_id="+pkeyId+" and b.is_deleted=0 and  d.formula like 'FC.chart%' limit 1");
         if(Func.isNotEmpty(configList)) {
             Map<String, Object> config = configList.get(0);
@@ -585,18 +612,75 @@ public class FormulaController {
             String[] rely = relyStr.split(",");
             String ky=rely[0].split(":")[1];
             String kx=rely[1].split(":")[1];
-            Formula formulaY =new Formula();
-            formulaY.setFormula(config.get("formula").toString());
-            formulaY.setRely(relyStr);
-            formulaY.setFormula(nest(formulaY.getFormula(),formulaY.getRely()));
-            this.service.relyParse(formulaY);
+            Map<String,FormData> dataSource= getDataFromCodes(Arrays.asList(rely),wtp,groupId);
+            List<Object> ly= calc(ky,dataSource);
+            List<Object> lx= calc(kx,dataSource);
+            for(int i=0;i< Math.min(ly.size(),lx.size());i++){
+                Object edy= ly.get(i);
+                Object edx =lx.get(i);
+                if(StringUtils.isNotEmpty(edy,edx)){
+                    jsonArray.add(new JSONArray().fluentAdd(edx).fluentAdd(edy));;
+                }
+            }
         }
-        return null;
+        return jsonArray;
     }
 
 
-    public List<Object> calc(String formula,Map<String,List<ElementData>> dataSource){
-        return null;
+    public List<Object> calc(String formula,Map<String,FormData> dataSource){
+        List<Object> result = new ArrayList<>();
+        Formula formulaY =new Formula();
+        formulaY.setFormula(formula);
+        this.service.relyParse(formulaY);
+        formulaY.setFormula(nest(formulaY.getFormula(),formulaY.getRely()));
+        this.service.relyParse(formulaY);
+        formula=formulaY.getFormula();
+        List<FormData>  ele = new ArrayList<>();
+        formulaY.getRelyList().forEach(rely->{
+            FormData formData=  dataSource.get(rely);
+            if(!formData.empty()){
+                ele.add(formData);
+            }
+        });
+        LinkedHashMap<String,FormData> fdMap =new LinkedHashMap<>();
+        FormData maxFormData = Collections.max(ele, Comparator.comparingInt((FormData ef)->ef.getValues().size()));
+        FormData minFormData = Collections.min(ele, Comparator.comparingInt((FormData ef)->ef.getValues().size()));
+        if (maxFormData.getValues().size() != minFormData.getValues().size()) {
+            int baseLength = maxFormData.getValues().size();
+            for (FormData formData : ele) {
+                formData.setStep(baseLength / formData.getValues().size());
+            }
+        }
+        ele.forEach(e->{
+            fdMap.put(e.getCode(),e);
+        });
+        CompositeDataAccess cda = new CompositeDataAccess(fdMap);
+        List<LocalVariable>  local= new ArrayList<>();
+        while (cda.hasNext()){
+            LinkedHashMap<String,ElementData> tip= cda.next();
+            Map<String, Object> variable = new HashMap<>();
+            @SuppressWarnings("unchecked")
+            Map<String,Object> em= (Map<String, Object>) variable.computeIfAbsent("E", k->new HashMap<>());
+            int index= new ArrayList<>(tip.values()).get(0).getIndex();
+            for(Map.Entry<String,ElementData> se:tip.entrySet()){
+                Object value=se.getValue().getValue();
+                if(CustomFunction.isNumber(value)){
+                    if(StringUtils.isDouble(value)||formula.contains("/")){
+                        em.put(se.getKey(),Double.parseDouble(value.toString()));
+                    }else{
+                        em.put(se.getKey(),StringUtils.handleObj2Integer(value));
+                    }
+                }else{
+                    em.put(se.getKey(),value);
+                }
+
+            }
+            local.add(new LocalVariable(index,formula,variable));
+        }
+        if(local.size()>0){
+            List<Object> values = FormulaUtils.slice(local,formula);
+        }
+        return result;
     }
 
 
@@ -607,11 +691,11 @@ public class FormulaController {
      * @Author yangyj
      * @Date 2023.08.01 14:53
      **/
-    public Map<String,List<ElementData>> getDataFromCodes(List<String> codes,WbsTreePrivate wtp,String id){
+    public Map<String,FormData>  getDataFromCodes(List<String> codes,WbsTreePrivate wtp,String id){
         String s = codes.stream().collect(Collectors.joining("','","'","'"));
         List<Map<String,Object>> listMap = this.jdbcTemplate.queryForList("select a.id elementId,a.e_key ekey,a.e_name eName,b.init_table_name tableName,b.html_url url,b.p_key_id pkeyId,b.node_name nodeName,CONCAT(b.init_table_name,':',a.e_key) tk from m_wbs_form_element a join m_wbs_tree_private b on a.f_id=b.init_table_id where b.parent_id="+wtp.getParentId()
                 +" and b.project_id="+wtp.getProjectId()+" and b.is_deleted=0 and a.is_deleted=0  and CONCAT(b.init_table_name,':',a.e_key) in("+s+") ORDER BY b.sort,b.create_time");
-        Map<String,List<ElementData>> result = new HashMap<>();
+        Map<String,FormData> result = new HashMap<>();
         if(listMap.size()>codes.size()){
             Map<String,Map<String,String>> coordsMap = new HashMap<>();
             for(Map<String,Object> m:listMap){
@@ -635,15 +719,10 @@ public class FormulaController {
                     }
                 }
             });
-           Map<String,FormData> fdMap= codes.stream().map(c->{
+           result= codes.stream().map(c->{
                 String[] tc=c.split(":");
                 return FormulaUtils.createFormDataFast(c,c,codeDataMap.get(c),coordsMap.get(tc[0]).get(tc[1]));
             }).filter(Objects::nonNull).collect(Collectors.toMap(FormData::getCode, f->f));
-           if(fdMap.size()>0){
-               fdMap.forEach((k,v)->{
-                   result.put(k,v.getValues());
-               });
-           }
         }
         return  result;
     }
@@ -683,7 +762,6 @@ public class FormulaController {
 
 
     public R<Object> flushPri(){
-        /*刷inittablename*/
         List<Map<String,Object>> listMap=this.jdbcTemplate.queryForList("select p_key_id nodeId,init_table_id tableId from m_wbs_tree_private where project_id=1630011899725201410 and init_table_id is not null and init_table_name is null and is_deleted=0");
         if(listMap.size()>0){
             Map<Long,Long> idMap= listMap.stream().collect(Collectors.toMap(m->Long.parseLong(m.get("nodeId").toString()),m->Long.parseLong(m.get("tableId").toString())));
@@ -705,4 +783,6 @@ public class FormulaController {
         }
         return R.fail("失败");
     }
+
+
 }

blade-service/blade-manager/src/main/java/org/springblade/manager/service/impl/FormulaServiceImpl.java

@@ -786,7 +786,7 @@ public class FormulaServiceImpl extends BaseServiceImpl<FormulaMapper, Formula>
                                     local.add(new LocalVariable(index,f,variable));
                                 }
                                 if(local.size()>0){
-                                    List<Object> values = slice(local,f);
+                                    List<Object> values = FormulaUtils.slice(local,f);
                                     FormulaUtils.write(fd,values, !fd.getTableName().equals(checkTable));
                                 }
                             }else{
@@ -1366,13 +1366,13 @@ public  List<ElementData> setScale(Integer scale,List<ElementData> data){
 
 
 
-    public  List<Object> slice(List<LocalVariable>  local,String formula){
+/*    public  List<Object> slice(List<LocalVariable>  local,String formula){
         int min =0;
         List<Object> result = new ArrayList<>();
         try {
             pretreatment(local,formula);
             List<Object>  r= local.stream().map(e-> {
-                /*所有依赖元素的内容必须非空才进行计算，否则返回空值*/
+                *//*所有依赖元素的内容必须非空才进行计算，否则返回空值*//*
                 return e.hasEmptyElementValue()?"": Expression.parse(e.getFormula()).calculate(e.getCurrentMap());
             }).collect(Collectors.toList());
             if(CollectionUtil.isNotEmpty(r)&&r.stream().anyMatch(StringUtils::isNotEmpty)){
@@ -1382,14 +1382,14 @@ public  List<ElementData> setScale(Integer scale,List<ElementData> data){
             StaticLog.error("公式：{}，执行出错",formula);
         }
         return  result;
-    }
+    }*/
 
-    public void  pretreatment(List<LocalVariable>  local,String formula){
+/*    public void  pretreatment(List<LocalVariable>  local,String formula){
         formula=StringUtils.removeMultiSpace(formula);
         if(formula.contains("LIST")){
             Matcher  m=RegexUtils.matcher("\\(([^)]*)\\)/LIST",formula);
             while (m.find()){
-                List<String> codes=this.getCodeList(m.group(1).replaceAll("[+-]",","));
+                List<String> codes=FormulaUtils.getCodeList(m.group(1).replaceAll("[+-]",","));
                 local=local.stream().peek(e->{
                     @SuppressWarnings("unckecked")
                     Map<String,Object> map = (Map<String, Object>) e.getCurrentMap().getOrDefault(E,new HashMap<>());
@@ -1401,7 +1401,7 @@ public  List<ElementData> setScale(Integer scale,List<ElementData> data){
                 }).collect(Collectors.toList());
             }
         }
-    }
+    }*/
 
 
     public  static void sort( List<FormData> list,int n){
@@ -1571,7 +1571,7 @@ public  List<ElementData> setScale(Integer scale,List<ElementData> data){
                      Matcher m = RegexUtils.matcher(FC_REG+"(quantity)\\(([^)]+)\\)",f);
                      while (m.find()) {
                          Object data=null;
-                         List<String> codeList = getCodeList(m.group(2));
+                         List<String> codeList = FormulaUtils.getCodeList(m.group(2));
                          @SuppressWarnings("unchecked")
                          Map<String,List<Map<String,Object>>> textInfoMap= (Map<String, List<Map<String, Object>>>) tec.constantMap.getOrDefault(TEXT_INFO_MAP,new HashMap<>());
                          List<Map<String,Object>> tableColKeyVal= textInfoMap.get(codeList.get(0));
@@ -1726,7 +1726,7 @@ public  List<ElementData> setScale(Integer scale,List<ElementData> data){
 
 
     /*从方法参数中获取全部code*/
-    public List<String> getCodeList(String param){
+/*    public List<String> getCodeList(String param){
         List<String> list = new ArrayList<>();
         if(StringUtils.isNotEmpty(param)){
             Arrays.stream(param.split(",")).forEach(s->{
@@ -1734,7 +1734,7 @@ public  List<ElementData> setScale(Integer scale,List<ElementData> data){
             });
         }
         return list;
-    }
+    }*/
 
     public List<String> getCodeByEl(String el){
         List<String> l = new ArrayList<>();