tsp-component/lib/ajax/cache.js

提供多端和react版本的UI组件

var Cache = (function () {
    function Cache(dbName, tableName) {
        this.dbName = dbName;
        this.tableName = tableName;
    }
    Cache.prototype.open = function (method) {
        var _this = this;
        var requests = indexedDB.open(this.dbName, 1);
        requests.onupgradeneeded = function (e) {
            var db = e.target['result'];
            if (!db.objectStoreNames.contains(_this.tableName)) {
                db.createObjectStore(_this.tableName, { keyPath: 'api' });
            }
        };
        requests.onsuccess = function (e) {
            if (method) {
                var db = e.target['result'];
                method(db);
            }
        };
        requests.onerror = function () {
            console.log('indexeddb onerror');
        };
        requests.onblocked = function () {
            console.log('indexeddb onblocked');
        };
    };
    Cache.prototype.add = function (data) {
        var _this = this;
        this.open(function (db) {
            db.transaction([_this.tableName], 'readwrite')
                .objectStore(_this.tableName)
                .add(data)
                .onsuccess = function (e) {
            };
        });
    };
    Cache.prototype.put = function (data) {
        var _this = this;
        this.open(function (db) {
            db.transaction([_this.tableName], 'readwrite')
                .objectStore(_this.tableName)
                .put(data)
                .onsuccess = function (e) {
            };
        });
    };
    Cache.prototype.read = function (option) {
        var _this = this;
        this.open(function (db) {
            db.transaction([_this.tableName], 'readonly')
                .objectStore(_this.tableName)
                .get(option.key)
                .onsuccess = function (e) {
                if (option.onsuccess) {
                    var result = { value: '' };
                    if (e.target.result) {
                        result = e.target.result;
                    }
                    option.onsuccess(result);
                }
            };
        });
    };
    return Cache;
}());
export default Cache;