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基于管线的连通性分析研究--广度搜索（JavaScript） [复制链接]

JohnLiu
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JohnLiu

  • 管理员
  • 30
  • 420
  • 2019-07-10
1#
t T
发表于 2019-07-30 15:41 |只看楼主
  1. var AnalysisConnection = function (url, tableName, s_expno, e_expno, f_sExp, f_eExp) {
  2.         var FMap = top.Freedom.Map;
  3.         var FSuperMap = top.SuperMap;

  5.         var foundList = [];
  6.         var foundPath = [];
  7.         var connPath = [];
  8.         var waitFind = [];
  9.         var count = 0;
  10.         var isFind = false;
  11.         var maxCount = 1000;

  13.         this.Excute = function () {
  14.             FMap.getTempLayer().removeAllFeatures();
  15.             foundPath = [];
  16.             foundPath = [];
  17.             waitFind = [];
  18.             connPath = [];
  19.             isFind = false;
  20.             maxCount = 1000;
  21.             count = 0;
  22.             foundList.push(s_expno);
  23.             waitFind.push(s_expno);
  24.             findWaitExp();
  25.         };

  27.         function findWaitExp() {
  28.             if (!isFind) {
  29.                 if (waitFind.length > 0) {
  30.                     if (count > maxCount) {
  31.                         if (FMap.queryList.length == 0) {
  32.                             top.$.messager.confirm({
  33.                                 title: '友情提示',
  34.                                 msg: '已经进行了 [' + count + '] 次查询，[' + foundList.length + '] 条记录，可能两个管点不连通！</br>是否继续搜索?',
  35.                                 fn: function (r) {
  36.                                     if (r) {
  37.                                         maxCount = maxCount + 1000;
  38.                                         count++;
  39.                                         findNextExp(waitFind[0]);
  40.                                     }
  41.                                 }
  42.                             });
  43.                         }
  44.                     } else {
  45.                         count++;
  46.                         findNextExp(waitFind[0]);
  47.                     }
  48.                 }
  49.             }
  50.         };

  52.         function checkFinished() {
  53.             if (!isFind && waitFind.length == 0 && FMap.queryList.length == 0) {
  54.                 top.$.messager.alert('友情提示', '系统已经检索完所有连通的管线，两个管点不连通!', 'info');
  55.             } else if (isFind && FMap.queryList.length == 0) {
  56.                 FMap.getTempLayer().removeAllFeatures();
  57.                 redrawPath(foundPath[foundPath.length - 1]);
  58.             }
  59.         }

  61.         function redrawPath(path) {
  62.             connPath.push(path);
  63.             var feature = path.line;
  64.             feature.style = FMap.selstyle;
  65.             FMap.getTempLayer().addFeatures(feature);
  66.             if (path.spoint != s_expno) {
  67.                 var find = null;
  68.                 $.each(foundPath, function (i, item) {
  69.                     if (path.spoint == item.epoint) {
  70.                         find = item;
  71.                         return false;
  72.                     }
  73.                 });
  74.                 if (find) {
  75.                     redrawPath(find);
  76.                 }
  77.             } else {
  78.                 $("#resultDataGrid").datagrid({
  79.                     data: [connPath],
  80.                     columns: [[
  81.                             { field: 'line.attributes.埋设方式', title: 'Code', width: 100 },
  82.                             { field: 'line.attributes.起始点号', title: 'Name', width: 100 },
  83.                             { field: 'line.attributes.终止点号', title: 'Price', width: 100, align: 'right' }
  84.                     ]]
  85.                 });
  86.             }
  87.         };

  89.         function findNextExp(expno) {
  90.             waitFind.splice(0, 1);
  91.             var params = [];
  92.             var param = new FSuperMap.REST.FilterParameter({
  93.                 name: tableName,
  94.                 attributeFilter: f_sExp + "='" + expno + "' or " + f_eExp + "='" + expno + "'"
  95.             });
  96.             params.push(param);
  97.             var SQLParams = new FSuperMap.REST.QueryBySQLParameters({
  98.                 queryParams: params
  99.             });
  100.             FMap.queryBySQL(url, SQLParams, function (e) {
  101.                 if (e.result.currentCount > 0 && e.result.recordsets.length == 1 && !isFind) {
  102.                     var fs = e.result.recordsets[0].features;
  103.                     $.each(fs, function (i, item) {
  104.                         var sexpno = item.attributes[f_sExp], eexpno = item.attributes[f_eExp];
  105.                         if (foundList.indexOf(sexpno) == -1 && !isFind) {//表示找到的点不在已经找到的列表里，则继续向下查找
  106.                             foundList.push(sexpno)
  107.                             waitFind.push(sexpno);

  109.                             var path = {
  110.                                 spoint: expno,
  111.                                 epoint: sexpno,
  112.                                 line: item
  113.                             };
  114.                             foundPath.push(path);

  116.                             var feature = item;
  117.                             feature.style = FMap.selstyle;
  118.                             FMap.getTempLayer().addFeatures(feature);

  120.                             if (sexpno == e_expno) {
  121.                                 isFind = true;
  122.                                 //FMap.getTempLayer().removeAllFeatures();
  123.                                 //redrawPath(path);
  124.                             } else {
  125.                                 findWaitExp();
  126.                             }
  127.                         } else if (foundList.indexOf(eexpno) == -1 && !isFind) {//表示找到的点不在已经找到的列表里，则继续向下查找
  128.                             foundList.push(eexpno)
  129.                             waitFind.push(eexpno);

  131.                             var path = {
  132.                                 spoint: expno,
  133.                                 epoint: eexpno,
  134.                                 line: item
  135.                             };
  136.                             foundPath.push(path);

  138.                             var feature = item;
  139.                             feature.style = FMap.selstyle;
  140.                             FMap.getTempLayer().addFeatures(feature);

  142.                             if (eexpno == e_expno) {
  143.                                 isFind = true;
  144.                                 //FMap.getTempLayer().removeAllFeatures();
  145.                                 //redrawPath(path);
  146.                             } else {
  147.                                 findWaitExp();
  148.                             }
  149.                         }
  150.                     });
  151.                 }
  152.                 checkFinished();
  153.             }, function (e) {
  154.                 var d = e;
  155.             });
  156.         }
  157.     };
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