/var/www/qr4y.gr/server/delivery/node_modules/@google-cloud/firestore/build/src
Edit: /var/www/qr4y.gr/server/delivery/node_modules/@google-cloud/firestore/build/src/document-change.js (5292B)
"use strict";
/*!
* Copyright 2018 Google Inc. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
Object.defineProperty(exports, "__esModule", { value: true });
exports.DocumentChange = void 0;
/**
* A DocumentChange represents a change to the documents matching a query.
* It contains the document affected and the type of change that occurred.
*
* @class DocumentChange
*/
class DocumentChange {
/**
* @hideconstructor
*
* @param {string} type 'added' | 'removed' | 'modified'.
* @param {QueryDocumentSnapshot} document The document.
* @param {number} oldIndex The index in the documents array prior to this
* change.
* @param {number} newIndex The index in the documents array after this
* change.
*/
constructor(type, document, oldIndex, newIndex) {
this._type = type;
this._document = document;
this._oldIndex = oldIndex;
this._newIndex = newIndex;
}
/**
* The type of change ('added', 'modified', or 'removed').
*
* @type {string}
* @name DocumentChange#type
* @readonly
*
* @example
* ```
* let query = firestore.collection('col').where('foo', '==', 'bar');
* let docsArray = [];
*
* let unsubscribe = query.onSnapshot(querySnapshot => {
* for (let change of querySnapshot.docChanges) {
* console.log(`Type of change is ${change.type}`);
* }
* });
*
* // Remove this listener.
* unsubscribe();
* ```
*/
get type() {
return this._type;
}
/**
* The document affected by this change.
*
* @type {QueryDocumentSnapshot}
* @name DocumentChange#doc
* @readonly
*
* @example
* ```
* let query = firestore.collection('col').where('foo', '==', 'bar');
*
* let unsubscribe = query.onSnapshot(querySnapshot => {
* for (let change of querySnapshot.docChanges) {
* console.log(change.doc.data());
* }
* });
*
* // Remove this listener.
* unsubscribe();
* ```
*/
get doc() {
return this._document;
}
/**
* The index of the changed document in the result set immediately prior to
* this DocumentChange (i.e. supposing that all prior DocumentChange objects
* have been applied). Is -1 for 'added' events.
*
* @type {number}
* @name DocumentChange#oldIndex
* @readonly
*
* @example
* ```
* let query = firestore.collection('col').where('foo', '==', 'bar');
* let docsArray = [];
*
* let unsubscribe = query.onSnapshot(querySnapshot => {
* for (let change of querySnapshot.docChanges) {
* if (change.oldIndex !== -1) {
* docsArray.splice(change.oldIndex, 1);
* }
* if (change.newIndex !== -1) {
* docsArray.splice(change.newIndex, 0, change.doc);
* }
* }
* });
*
* // Remove this listener.
* unsubscribe();
* ```
*/
get oldIndex() {
return this._oldIndex;
}
/**
* The index of the changed document in the result set immediately after
* this DocumentChange (i.e. supposing that all prior DocumentChange
* objects and the current DocumentChange object have been applied).
* Is -1 for 'removed' events.
*
* @type {number}
* @name DocumentChange#newIndex
* @readonly
*
* @example
* ```
* let query = firestore.collection('col').where('foo', '==', 'bar');
* let docsArray = [];
*
* let unsubscribe = query.onSnapshot(querySnapshot => {
* for (let change of querySnapshot.docChanges) {
* if (change.oldIndex !== -1) {
* docsArray.splice(change.oldIndex, 1);
* }
* if (change.newIndex !== -1) {
* docsArray.splice(change.newIndex, 0, change.doc);
* }
* }
* });
*
* // Remove this listener.
* unsubscribe();
* ```
*/
get newIndex() {
return this._newIndex;
}
/**
* Returns true if the data in this `DocumentChange` is equal to the provided
* value.
*
* @param {*} other The value to compare against.
* @return true if this `DocumentChange` is equal to the provided value.
*/
isEqual(other) {
if (this === other) {
return true;
}
return (other instanceof DocumentChange &&
this._type === other._type &&
this._oldIndex === other._oldIndex &&
this._newIndex === other._newIndex &&
this._document.isEqual(other._document));
}
}
exports.DocumentChange = DocumentChange;
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