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| import { Request } from "./request";
import { Db } from "./db";
import { Util } from "./util";
import { Command } from "./command";
/**
* 文档模块
*
* @author haroldhu
*/
export class DocumentReference {
/**
* 数据库引用
*
* @internal
*/
private _db: Db;
/**
* 集合名称
*
* @internal
*/
private _coll: string;
/**
* 文档ID
*/
readonly id: string;
/**
*
*/
readonly projection: Object;
/**
* Request 实例
*
* @internal
*/
private request: Request;
/**
* 初始化
*
* @internal
*
* @param db - 数据库的引用
* @param coll - 集合名称
* @param docID - 文档ID
*/
constructor(db: Db, coll: string, docID: string, projection = {}) {
this._db = db;
this._coll = coll;
this.id = docID;
this.request = new Request(this._db);
this.projection = projection;
}
/**
* 创建一篇文档
*
* @param data - 文档数据
* @internal
*/
create(data): Promise<any> {
let params = {
collectionName: this._coll,
data: Util.encodeDocumentDataForReq(data, false, false)
};
Iif (this.id) {
params["_id"] = this.id;
}
return new Promise<any>(resolve => {
this.request.send("addDocument", params).then(res => {
Iif (res.code) {
resolve(res);
}
resolve({
id: res.data._id,
requestId: res.requestId
});
});
});
}
/**
* 创建或添加数据
*
* 如果文档ID不存在,则创建该文档并插入数据,根据返回数据的 upserted_id 判断
* 添加数据的话,根据返回数据的 set 判断影响的行数
*
* @param data - 文档数据
*/
set(data: Object): Promise<any> {
Iif (!data || typeof data !== "object") {
return Promise.resolve({
code: 'INVALID_PARAM',
message: '参数必需是非空对象'
})
}
Iif (data.hasOwnProperty('_id')) {
return Promise.resolve({
code: 'INVALID_PARAM',
message: '不能更新_id的值'
})
}
let hasOperator = false;
const checkMixed = (objs) => {
// console.log(objs)
Eif (typeof objs === 'object') {
for (let key in objs) {
Iif (objs[key] instanceof Command) {
hasOperator = true
} else if (typeof objs[key] === 'object') {
checkMixed(objs[key])
}
}
}
}
checkMixed(data)
// console.log('hasOperator', hasOperator)
Iif (hasOperator) { //不能包含操作符
return Promise.resolve({
code: 'DATABASE_REQUEST_FAILED',
message: 'update operator complicit'
})
}
const merge = false; //data不能带有操作符
let param = {
collectionName: this._coll,
data: Util.encodeDocumentDataForReq(data, merge, false),
multi: false,
merge,
upsert: true
};
Iif (this.id) {
param["query"] = { _id: this.id };
}
return new Promise<any>(resolve => {
this.request.send("updateDocument", param).then(res => {
Iif (res.code) {
resolve(res);
} else {
resolve({
updated: res.data.updated,
upsertedId: res.data.upserted_id,
requestId: res.requestId
});
}
});
});
}
/**
* 更新数据
*
* @param data - 文档数据
*/
update(data: Object) {
Iif (!data || typeof data !== "object") {
return Promise.resolve({
code: 'INVALID_PARAM',
message: '参数必需是非空对象'
})
}
Iif (data.hasOwnProperty('_id')) {
return Promise.resolve({
code: 'INVALID_PARAM',
message: '不能更新_id的值'
})
}
const query = { _id: this.id };
const merge = true; //把所有更新数据转为带操作符的
const param = {
collectionName: this._coll,
data: Util.encodeDocumentDataForReq(data, merge, true),
query: query,
multi: false,
merge,
upsert: false
};
return new Promise<any>(resolve => {
this.request.send("updateDocument", param).then(res => {
Iif (res.code) {
resolve(res);
} else {
resolve({
updated: res.data.updated,
upsertedId: res.data.upserted_id,
requestId: res.requestId
});
}
});
});
}
/**
* 删除文档
*/
remove(): Promise<any> {
const query = { _id: this.id };
const param = {
collectionName: this._coll,
query: query,
multi: false
};
return new Promise<any>(resolve => {
this.request.send("deleteDocument", param).then(res => {
Iif (res.code) {
resolve(res);
} else {
resolve({
deleted: res.data.deleted,
requestId: res.requestId
});
}
});
});
}
/**
* 返回选中的文档(_id)
*/
get(): Promise<any> {
const query = { _id: this.id };
const param = {
collectionName: this._coll,
query: query,
multi: false,
projection: this.projection
};
return new Promise<any>(resolve => {
this.request.send("queryDocument", param).then(res => {
if (res.code) {
resolve(res);
} else {
const documents = Util.formatResDocumentData(res.data.list);
resolve({
data: documents,
requestId: res.requestId,
total: res.TotalCount,
limit: res.Limit,
offset: res.Offset
});
}
});
});
}
/**
*
*/
field(projection: Object): DocumentReference {
for (let k in projection) {
if (projection[k]) {
projection[k] = 1;
} else {
projection[k] = 0;
}
}
return new DocumentReference(this._db, this._coll, this.id, projection);
}
}
|