GraphQueryResult

属性概述

属性详细信息

declaredClass Stringreadonly inherited

类的名称。声明的类名称格式化为 geoscene.folder.className。

resultRows Array<(Path|GraphObject|Geometry|Date|string|number|null|Array<(Path|GraphObject|Geometry|Date|string|number|null)>)>

从搜索或查询返回的结果类型数组。resultRows 数组中的每个项目都匹配搜索或查询约束。

示例

// Example of GraphQueryResult.resultRows returned from a
// `MATCH (n:Supplier)-[r]->(m) RETURN [n.id, n.geometry, n, r, m], {var1: n}`
// query on a knowledge graph that contains supply chain information
KnowledgeGraphModule.executeQuery(
 knowledgeGraph, //graph
 { //searchArguments
   openCypherQuery: "MATCH (n:Supplier)-[r]->(m) RETURN [n.id, n.geometry, n, r, m], {var1: n}",
  }).then((queryResult) => {
    //do something with the result
   console.log(queryResult)
});

//sample result of the above query
"resultRows": [
 [ //array of result types that meet query criteria
   [ //single return type that matches query return format.
     1111,
     "Point",
     {  //Supplier Entity
       "properties": {
         "Name": "Queen City Steel",
       },
       "typeName": "Supplier",
       "id": "1111"
     },
     { // 'supplies' relationship between Supplier and Plant
       "destinationId": "1111",
       "originId": "1236",
       "properties": {
         "material_supplied": "steel"
       },
       "typeName": "supplies",
       "id": "A268",
     },
     { //destination entity of 'supplies' for supplier 1111
       "properties": {
         "Name": "Sky Manufacturing",
       },
       "typeName": "Plant",
       "id": "1236"
     }
   ],
   {  // anonymous object returned by the `{var1:n}` query parameter
     "properties": {
       "var1": { //the entity (n) returned in the var1 object
         "properties": {
           "Name": "Queen City Steel",
       },
         "typeName": "Supplier",
         "id": "1111"
       }
     }
   }
 ]
]

方法概述

方法详细说明

addHandles(handleOrHandles, groupKey)inherited

添加一个或多个与对象的生命周期相关联的句柄。当对象被销毁时，将移除句柄。

// Manually manage handles
const handle = reactiveUtils.when(
  () => !view.updating,
  () => {
    wkidSelect.disabled = false;
  },
  { once: true }
);

// Handle gets removed when the object is destroyed.
this.addHandles(handle);

参数

handleOrHandles WatchHandle|WatchHandle[] 对象销毁后，标记为要移除的句柄。

groupKey * optional 标识句柄应添加到的组的键。组中的所有句柄稍后都可使用 Accessor.removeHandles() 进行删除。如果未提供键，则句柄将被添加到默认组。

hasHandles(groupKey){Boolean}inherited

如果存在指定的句柄组，则返回 true。

参数

groupKey * optional 组键。

返回

类型	描述
Boolean	如果存在指定的句柄组，则返回 true。

示例

// Remove a named group of handles if they exist.
if (obj.hasHandles("watch-view-updates")) {
  obj.removeHandles("watch-view-updates");
}

removeHandles(groupKey)inherited

移除对象拥有的句柄组。

参数

groupKey * optional 要移除的组键或组键的数组或集合。

示例

obj.removeHandles(); // removes handles from default group

obj.removeHandles("handle-group");
obj.removeHandles("other-handle-group");