ZLPMS/PMS.WebUI/Content/Scripts/indexedDB.js

//index.db.js;
/*********
*说明：HTML本地数据库存储操作类
*编写：张祥明
*时间：2017-09-27
*************/
window.indexedDB = window.indexedDB || window.mozIndexedDB ||window.webkitIndexedDB ||window.msIndexedDB;
window.IDBTransaction = window.IDBTransaction || window.webkitIDBTransaction || window.msIDBTransaction;
window.IDBKeyRange = window.IDBKeyRange ||window.webkitIDBKeyRange ||window.msIDBKeyRange;
(function (window) {
    'use strict';
    var db = {
        version: 1, // important: only use whole numbers!
        objectStoreName: 'ZLPMS',
        instance: {},
        upgrade: function (e) {
            var
                _db = e.target.result,
                names = _db.objectStoreNames,
                name = db.objectStoreName;
            if (!names.contains(name)) {
                _db.createObjectStore(
                    name,
                    {
                        keyPath: 'id',
                        autoIncrement: true
                    });
            }
        },

        errorHandler: function (error) {
            window.alert('error: ' + error.target.code);
        },
        isIndexedDB: function () {
            var indexedDB = window.indexedDB || window.webkitIndexedDB || window.mozIndexedDB || window.msIndexedDB;
            if (indexedDB) {
                return true;
            }
            else {
                return false;
            }
        } ,
        open: function (callback) {

            var request = window.indexedDB.open(
                db.objectStoreName, db.version);

            request.onerror = db.errorHandler;

            request.onupgradeneeded = db.upgrade;

            request.onsuccess = function (e) {

                db.instance = request.result;

                db.instance.onerror =
                    db.errorHandler;

                callback();
            };
        },

        getObjectStore: function (mode) {

            var txn, store;

            mode = mode || 'readonly';

            txn = db.instance.transaction(
                [db.objectStoreName], mode);

            store = txn.objectStore(
                db.objectStoreName);

            return store;
        },

        save: function (data, callback) {

            db.open(function () {

                var store, request,
                    mode = 'readwrite';
                store = db.getObjectStore(mode),
              
                request = data.id ?
                    store.put(data) :
                    store.add(data);

                request.onsuccess = callback;
            });
        },

        getAll: function (callback) {

            db.open(function () {

                var
                    store = db.getObjectStore(),
                    cursor = store.openCursor(),
                    data = [];

                cursor.onsuccess = function (e) {

                    var result = e.target.result;

                    if (result &&
                        result !== null) {

                        data.push(result.value);
                        result.continue();

                    } else {

                        callback(data);
                    }
                };

            });
        },

        get: function (id, callback) {
           // id = parseInt(id);
            db.open(function () {
                var store = db.getObjectStore();
                var request = store.get(id);
                request.onsuccess = function (e) {
                    callback(e.target.result);
                };
            });
        },

        'delete': function (id, callback) {
           // id = parseInt(id);
            db.open(function () {
                var
                    mode = 'readwrite',
                    store, request;

                store = db.getObjectStore(mode);

                request = store.delete(id);

                request.onsuccess = callback;
            });
        },

        deleteAll: function (callback) {

            db.open(function () {

                var mode, store, request;

                mode = 'readwrite';
                store = db.getObjectStore(mode);
                request = store.clear();

                request.onsuccess = callback;
            });

        }
    };

    window.zlsoft = window.zlsoft || {};
    window.zlsoft.db = db;

}(window));