利用instanceTree倒推退出dbId


/**
 * elid转换dbid
 * @param elIds {Array}
 * @returns dbIds {Array}
 */


elIdToDbId(elIds){
    let itNodeAccess = this.viewer.model.getData().instanceTree.nodeAccess;
    let dbIds=[];
    elIds.forEach(elId=>{
        let elIdIndex = itNodeAccess.nameSuffixes.indexOf(elId);
        let dbId = this.findKeyByValue(elIdIndex,itNodeAccess.dbIdToIndex);
        dbIds.push(dbId)
    })

    return dbIds;
}

/**
 *
 * @param value value 值
 * @param data  对象
 * @param compare
 * @returns {string} 对象的key
 */
findKeyByValue (value,data, compare = (a, b) => a === b) {
    return Object.keys(data).find(k => compare(data[k], value))
}



/**
 * dbid转换elid
 * @param dbIds  {Array}
 * @returns elIds {Array}
 */

 dbIdToElId(dbIds){
     const it = this.viewer.model.getData().instanceTree;
     let elIds=[];
     dbIds.forEach(dbId=>{
         let dbIdIndex = it.nodeAccess.dbIdToIndex[dbId];
         let elId = it.nodeAccess.nameSuffixes[dbIdIndex];
         elIds.push(elId)
     })
    return elIds;
}