/** phis 缓存加载！ 如果浏览器支持和html5，则调用phis\EAPDomain\unieap\ria3.3\unieap\clientCache\localStorage.js 组件做客户端缓存操作！ 如果浏览器不支持的话：则调用phis\EAPDomain\unieap\ria3.3\unieap\clientCache\activexSQLite.js */
dojo.require("unieap.global");
dojo.require("unieap.util.util");
dojo.provide("unieap.cache");
(function(){
var isHTML5Available = ('localStorage' in window) && window['localStorage'] !== null && window['localStorage'] !== undefined;
if(isHTML5Available){
dojo.require("unieap.clientCache.localStorage");
}else{
dojo.require("unieap.clientCache.activexSQLite");
}
unieap.cache = new unieap.clientCache();
})();
/**
目前phis只支持IE8/9 所以客户端缓存采用的都是js通过自定义的ActiveX控件调用SQLite完成！
所以，以上代码端都是走的else分支！初始实例化的本质都是
在 本地：C:/phis_local/db/目录下，new一个名字为：phislocalcache+ gsLoginInfo.getOrgId()(4028c8813a002456013a00a4c6ca001f)+.db 的SQLite数据库
phis\EAPDomain\unieap\ria3.3\unieap\clientCache\activexSQLite.js
*/
dojo.require("unieap.global");
dojo.require("unieap.util.util");
dojo.provide("unieap.clientCache.activexSQLite");
/**
* @declaredClass:
* unieap.cache
* @summary:
* 缓存操作底层接口,用于操作google gears
* @example:
* |<script type="text/javascript">
* | //判断google gears是否可用
* | var isCacheUsable=unieap.cache.isAvailable();
* | alert(isCacheUsable);
* |</script>
* @example:
* |<script type="text/javascript">
* | //获得缓存在google gears中的总记录数
* | var totalCount=unieap.cache.getCount();
* |</script>
* @example:
* |<script type="text/javascript">
* | //删除google gears中缓存的所有数据
* | unieap.cache.clear();
* |</script>
*/
dojo.declare("unieap.clientCache", null, {
// 数据库存放系统路径
DB_PATH : "C:/phis_local/db/",
// SQLite中要创建的database的名字
DB_NAME : "phislocalcache",
// 本地数据库文件
_cache_dbPath : "",
// SQLite中要创建的table的名字
CODELIST_TABLE_NAME : "unieap_codelist_table",
constructor: function(param) {
dojo.mixin(this, param);
},
_cache_db : null,
_initActiveX:function(){
var _db = null;
if(document.getElementById('sqliteObj')){
_db = document.getElementById('sqliteObj');
} else {
if (navigator.appVersion.indexOf("MSIE") != -1) {
// IE
var obj = document.createElement("object");
obj.setAttribute("id","sqliteObj");
obj.setAttribute("style","visibility:hidden;width:0px; height:0px;");
obj.setAttribute("classid","clsid:3E22694D-7B92-42A1-89A7-668E2F7AA107");
obj.setAttribute("progid","LiteX.LiteConnection");
document.appendChild(obj);
} else {
alert("请使用IE浏览器");
return null;
}
_db = document.getElementById('sqliteObj');
}
if (!_db) {
return null;
}
return _db;
},
/**
* 初始化本地数据库
*
* @return 数据库对象，如果初始化失败则返回nul
*/
_initDB:function(){
if(typeof(gsLoginInfo) != 'undefined' && typeof(gsLoginInfo.getOrgId) != 'undefined'){
if(unieap.isEmpty(this._cache_dbPath)){
this._cache_dbPath += this.DB_PATH + + this.DB_NAME + gsLoginInfo.getOrgId() + ".db";
}
} else if(typeof(getCurrentOrgID) != 'undefined'){
if(unieap.isEmpty(this._cache_dbPath)){
this._cache_dbPath += this.DB_PATH + + this.DB_NAME + getCurrentOrgID() + ".db";
}
}
if (this._cache_db) {
this._cache_db.path = this._cache_dbPath;
//打开数据库，每次使用结束后必须执行Close()方法关闭
try{
this._cache_db.Open();
}catch(e){
this._cache_db.Close();
this._cache_db.Open();
}
return this._cache_db;
}
if(unieap.global.isUseClientCache == false){
return null;
}
try {
//创建db
this._cache_db = this._initActiveX();
if(this._cache_db){
this._cache_db.path = this._cache_dbPath;
//打开数据库，每次使用结束后必须执行Close()方法关闭
this._cache_db.Open();
}
}catch(e){
MessageBox.alert({
title:"错误",
message:"没有找到数据库文件: "+e.message
});
this._cache_db = null;
}
return this._cache_db;
},
// 创建数据字典DB以及表
/**
*@summary:
* 在SQLite中创建codelist_table表
* @example:
* |<script>
* | unieap.cache.creatCodeListTable();
* |</script>
*/
creatCodeListTable : function(){
var db = this._initDB();
if (db == null) {
return null;
}
db.execute("CREATE TABLE IF NOT EXISTS "
+ unieap.cache.CODELIST_TABLE_NAME + "(key TEXT,value TEXT,timestamp INT)");
db.execute("CREATE UNIQUE INDEX IF NOT EXISTS key_index"
+ " ON " + unieap.cache.CODELIST_TABLE_NAME + " (key)");
try{
db.Close();
} catch(ex){}
},
/**
*@summary:
* 判断ActiveX是否可用
* @description:
* 如果ActiveX没有注册或者用户在gloabal.js中设置unieap.global.isUseClientCache为false，
* 程序返回的也为false
*/
isAvailable : function(){
return unieap.global.isUseClientCache
&& this._initActiveX()!= null;
},
//清除gears中codelist_table表的所有记录
/**
*@summary:
* 清除gears中codelist_table表的所有记录
* @example:
* |<script>
* | unieap.cache.clear();
* |</script>
* 通过unieap的debug工具查看缓存数据是否被清空
*/
clear : function() {
var db = this._initDB();
if (db == null) {
return;
}
db.execute("DELETE FROM " + this.CODELIST_TABLE_NAME);
try{
db.Close();
}catch(ex){
}
},
//往codelist_table表中插入数据
//unieap.cache.put('name','neusoft');
//如果不设置timestamp,timestamp值为默认为1
/**
*@summary:
* 往codelist_table表中插入数据
* @param：
* {string} key
* @param：
* {string} value
* @param：
* {string} timestamp
* @example:
* |<script>
* | var value = "[
* | {CODEVALUE:1,CODENAME:'汉族'},
* | {CODEVALUE:2,CODENAME:'回族'},
* | {CODEVALUE:3,CODENAME:'白族'}
* | ]";
* | unieap.cache.put("dept",value,String(new Date().getTime()));
* |</script>
* 通过unieap的debug工具查看缓存数据是否被清空
*/
put : function(key, value,timestamp) {
var db = this._initDB();
if (db == null) {
return;
}
db.execute("REPLACE INTO " + this.CODELIST_TABLE_NAME
+ " VALUES (?,?,?)", key, value,timestamp||1);
try{
db.Close();
}catch(ex){
}
},
//往codelist_table表中插入数据
//unieap.cache.putMultiple(['name','age'],['neusoft',20]);
//如果不设置timestamp,timestamp值为默认为1
putMultiple : function(keys, values,timestamps) {
var db = this._initDB();
if (db == null) {
return;
}
db.execute("BEGIN TRANSACTION");
var _stmt = "REPLACE INTO " + this.CODELIST_TABLE_NAME
+ " VALUES (?, ?,?)";
for (var i = 0,j = 0,k=0, key, value,timestamp; (key = keys[i++]) && (value = values[j++])&&(timestamp=timestamps&×tamps[k++]||1);) {
db.execute(_stmt, key, value, timestamp);
}
db.execute("COMMIT TRANSACTION");
try{
db.Close();
}catch(ex){
}
},
//从codelist_table表中获取数据
////unieap.cache.get('name')=>'neusoft'
get : function(key) {
var db = this._initDB();
var value = null;
if (db == null) {
return value;
}
var rs = db.Prepare("SELECT value FROM " + unieap.cache.CODELIST_TABLE_NAME + " WHERE key = '"+key+"'");
while (!rs.Step()) {
value = rs.ColumnValue(0);
}
this._setRsDsClose(rs, ds);
return value;
},
//删除codelist_table表中的一条记录
//unieap.cache.remove('name')=>key为name的信息被删除了
remove : function(key) {
var db = this._initDB();
if (db == null) {
return;
}
db.execute("DELETE FROM " + this.CODELIST_TABLE_NAME
+ " WHERE key = ?", key);
try{
db.Close();
}catch(ex){
}
},
//获取codelist_table表中的所有keys值
getKeys : function(){
var db = this._initDB();
var value = [];
if (db == null) {
return null;
}
var rs = db.Prepare("SELECT key FROM " + this.CODELIST_TABLE_NAME);
while (!rs.Step()) {
value.push(rs.ColumnValue(0));
}
this._setRsDsClose(rs, ds);
return value;
},
//获取codelist_table表中的总记录数
getCount : function() {
var db = this._initDB();
if (db == null) {
return null;
}
var rs = db.Prepare("SELECT count(*) FROM " + this.CODELIST_TABLE_NAME);
var result = rs.ColumnValue(0);
this._setRsDsClose(rs, ds);
return result;
},
//获取codelist_table表中所有记录的timestamp
//返回值为一个object,格式为obj[key]=timestamp
//查找的时间戳大于2649600000,也就是大于1970年1月1日
getAllTimeStamps : function(){
var db = this._initDB();
if (db == null) {
return null;
}
var rs = db.Prepare("SELECT key,timestamp FROM " + this.CODELIST_TABLE_NAME+' WHERE timestamp>2649600000');
var value={}
while(!rs.Step()){
value[rs.ColumnValue(0)]=rs.ColumnValue(1);
}
this._setRsDsClose(rs, ds);
return value;
},
// 关闭rs,ds
_setRsDsClose: function(rs, ds){
try{
rs.Close();
}catch(ex){
}
try{
db.Close();
}catch(ex){
}
}
});
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