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DataStore
Part5 - Serialized Fields
Serialized Fields 假设你有个model objects拥有一个非native
datastore
的(例如String或者Date)同时也不是一个有主,一对一关系的model object
iamxiaole
·
2009-10-15 09:00
thread
数据结构
jpa
Google
UP
google app engine的Text字段的延迟加载
要在google app engine的JDO存储中,放很长的文本(500以上)的时候,String就不行了,字段应该定义为com.google.appengine.api.
datastore
.Text
moderating
·
2009-10-13 13:00
jsp
Google
Ext用表格显示数据即增、删、改的完整实例
var menuMgr = function() { var menuForm;// 菜单表单 var window;// 窗口 var gridPanel;// 表格 var
dataStore
忧里修斯
·
2009-10-13 13:00
DAO
jsp
log4j
配置管理
ext
Part4 - JDO/JPA执行Keys-Only的查询
Keys Only Queries If you use the low-level
datastore
api you may have noticed that the
iamxiaole
·
2009-10-07 09:00
thread
jpa
Google
UP
Part2 - JDO/JPA 批量检索
你好,欢迎来到这个星期的"JDO/JPA Snippets That Work"环节:执行批量的Gets 你知道App Engine
datastore
支持批量的gets吗?
iamxiaole
·
2009-09-22 14:00
thread
Google
jpa
JDO/JPA 批量检索
installment of JDO/JPA Snippets That Work: Executing Batch Gets Did you know that the App Engine
datastore
fireboyz2005
·
2009-09-22 14:00
thread
jpa
Google
google app engine的缓存服务解决性能问题
googleappengine,说起来都很激动,用起来其实上火,尤其是
datastore
SQl,用不了,hibernate,用不了,or查询,用不了,!=查询,会被拆成N个query来执行。。。。
moderating
·
2009-09-03 12:00
java
sql
Hibernate
cache
Google
系统容灾备份选型的决策表
一致性差最终一致性最终一致性强一致性强一致性事务不支持全局事务本地事务全局事务全局事务延迟低低低高高吞吐高高高低中等数据丢失概率很多很少很少不会丢失不会丢失Failover无只读读/写读/写读/写摘自对GoogleAppEngine
DataStore
leader
彭帅
·
2009-08-27 17:00
GAE技巧汇总
1.免sharding的高并发计数器.核心思想:采用memcached作临时存储,定期写入
datastore
.incrementCounter 1 def incrementCounter(key, update_interval
彭帅
·
2009-08-26 01:00
在Google App Engine中使用PHP和MySQL
id=dhg923vj_2ghr8q9f3#PHP Overview jiql is a JDBC wrapper for accessing Google
DataStore
on Google
haohetao
·
2009-08-24 19:00
PHP
mysql
jdbc
Google
GAE
在Google App Engine中使用PHP和MySQL
id=dhg923vj_2ghr8q9f3#PHP Overview jiql is a JDBC wrapper for accessing Google
DataStore
on Google
haohetao
·
2009-08-24 19:00
PHP
mysql
jdbc
Google
GAE
Try ORM for HBase with DataNucleus hbase plugin
TryORMforHBasewithDataNucleushbaseplugin TryORMforHBasewithDataNucleusHBase
datastore
supposeyouhavereadthelastblogentryoryouhavealreadysetuptheenvforhbase1
gembin
·
2009-08-17 23:00
MethodServer连接数据库失败解决办法一
WTConnection(): statementManager=wt.pom.StandardCacheStatementManagermain: wt.ufid.UfidException: wt.pom.
Datastore
Except
jeans
·
2009-08-04 22:00
oracle
sql
MethodServer连接数据库失败解决办法一
wt.pom.statementCache-WTConnection():statementManager=wt.pom.StandardCacheStatementManagermain:wt.ufid.UfidException:wt.pom.
Datastore
Exception
jeans
·
2009-08-04 22:00
Oracle
SQL
Rescuing a running virtual machine with dd when
datastore
metadata is inacces
DetailsThisisanalternativeLinuxcommandtoclonevmdkswithoutpoweringoffavirtualmachine.Somepossiblesituationsforuseincludethefollowing:MetadataiscorruptedorlostPartoftheLUNhasbeenover-written,forexample,
jackie.chen
·
2009-08-04 12:06
running
datastore
metadata
machine
Rescuing
Rescuing a running virtual machine with dd when
datastore
metadata is inacces
DetailsThisisanalternativeLinuxcommandtoclonevmdkswithoutpoweringoffavirtualmachine.Somepossiblesituationsforuseincludethefollowing:MetadataiscorruptedorlostPartoftheLUNhasbeenover-written,forexample,
jackie.chen
·
2009-08-04 12:06
running
datastore
metadata
machine
Rescuing
Google
Datastore
for Java 文档摘录(五)
POJO类的某个属性可以是一个Serializable 类的实例,该属性被保存在
Datastore
中的数据类型是com.google.appengine.api.
datastore
.Blob。
jinjiankang
·
2009-08-02 13:00
java
thread
Google
Google
Datastore
for Java 文档摘录(四)
Embedded classes allow you to model a field value using a class without creating a new
datastore
entity
jinjiankang
·
2009-07-31 10:00
java
Google
使用ESXi 4.0的几点小结
4)ESXi4.0安装完成后,服务器的硬盘被格式化成vmfs3的格式,并命名为
datastore
X(X代表硬盘号,从1开始)。所有的虚拟机文件都
jackie.chen
·
2009-07-30 10:56
职场
休闲
esxi
使用ESXi 4.0的几点小结
4)ESXi4.0安装完成后,服务器的硬盘被格式化成vmfs3的格式,并命名为
datastore
X(X代表硬盘号,从1开始)。所有的虚拟机文件都
jackie.chen
·
2009-07-30 10:56
职场
休闲
ESXi
虚拟化
使用ESXi 4.0的几点小结
4)ESXi4.0安装完成后,服务器的硬盘被格式化成vmfs3的格式,并命名为
datastore
X(X代表硬盘号,从1开始)。所有的虚拟机文件都
jackie.chen
·
2009-07-30 10:56
职场
休闲
esxi
Google
Datastore
for Java 文档摘录(三)
You can modify an object after the PersistenceManager has been closed by declaring the class as "detachable." To do this, add the detachable attribute to the @PersistenceCapable annotation:
jinjiankang
·
2009-07-26 14:00
java
Google
内存数据库Timesten的Transaction Log API的应用
XLAandTimesTenEventManagement一节内容看完了,它的主要作用是利用Oracle的事务日志,进行对表中记录的监控,它的说明是如下:•MonitorTimesTenforchangestospecifiedtablesinalocal
datastore
BLUESKY
·
2009-07-22 19:00
Google
Datastore
for Java 文档摘录(二)
The following features of the JDO interface are not supported by the App Engine implementation: contains() syntax for query filters on Collection fields. You can test that a multi-valued property
jinjiankang
·
2009-07-22 09:00
java
C++
c
Google
C#
Google
Datastore
for Java 文档摘录(一)
The
datastore
is designed with web applications in mind, with an emphasis on read and query performance
jinjiankang
·
2009-07-20 09:00
java
eclipse
Google
UML
GAE
Google
Datastore
for Java 中POJO的String类型属性最大存储长度
经测试,对String类型属性,最多可将500个汉字,或者500个英文字母保存进
Datastore
。
jinjiankang
·
2009-07-18 22:00
java
Google
(Python编程)Pickle对象
PP3eD19.4.PickledObjects19.4.Pickle对象ProbablythebiggestlimitationofDBMkeyedfilesisinwhattheycanstore:
datastore
d
金庆的专栏
·
2009-07-03 16:00
(Python编程)Pickle对象
19.4.PickledObjects19.4.Pickle对象ProbablythebiggestlimitationofDBMkeyedfilesisinwhattheycanstore:
datastore
dunderakeymustb
jq0123
·
2009-07-03 16:00
编程
python
object
File
Module
protocols
SSAS : 数据访问接口整理汇总
MicrosoftSQLServer2005AnalysisServices(SSAS)supportsseveraltechnologiesthatcanbeusedtoaccessdataandmeta
datastore
donaninstanceofAnalysisServices.UsingtheAnalysisServicesdataaccesstechnologies
chen_xizhang
·
2009-06-27 09:00
Google AppEngine (GAE) 做Session 真郁闷!
在Google AppEngine做Session 本身并不是一个复杂的问题,可以基于Memcached API来做,也可以基于
DataStore
来做,为何让我郁闷?
cppupu
·
2009-06-26 21:00
python
Google
memcached
GAE
Google AppEngine (GAE) 做Session 真郁闷!
在Google AppEngine做Session 本身并不是一个复杂的问题,可以基于Memcached API来做,也可以基于
DataStore
来做,为何让我郁闷?
cppupu
·
2009-06-26 21:00
python
Google
memcached
GAE
rche 033----unit 10-----advances topics in users,groups and permissions
================== .mappingusernamestouseridnumbers .mappinggroupnamestogroupidnumbers .
datastore
donthehardd
wwywangweiyin
·
2009-05-26 10:31
linux
users
groups
permitions
rche
033
rche 033----unit 10-----advances topics in users,groups and permissions
================== .mappingusernamestouseridnumbers .mappinggroupnamestogroupidnumbers .
datastore
donthehardd
wwywangweiyin
·
2009-05-26 10:31
linux
users
groups
033
rche
permitions
EXT 中文排序问题
// 重载 Ext.data.Store.prototype.applySort 函数以修复
DataStore
对汉字排序异常的问题 // var _applySort = Ext.data.Store.prototype.applySort
foamflower
·
2009-05-19 08:00
function
String
ext
IE
firefox
Grails 1.1.1正式支持Google App Engine
grailsuninstall-pluginhibernate但这仅仅是个开始,Grails团队继续在JDO和JPA之上构建类似GORM的抽象层,以便提升AppEngine
DataStore
API和JDO
张凯峰
·
2009-05-19 00:00
Grails 1.1.1正式支持Google App Engine
grailsuninstall-pluginhibernate但这仅仅是个开始,Grails团队继续在JDO和JPA之上构建类似GORM的抽象层,以便提升AppEngine
DataStore
API和JDO
张凯峰
·
2009-05-19 00:00
GDAL API Tutorial
GDALAPITutorialhttp://www.gdal.org/gdal_tutorial.htmlOpeningtheFileBeforeopeningaGDALsupportedraster
datastore
itisnecessarytoregisterdrivers.Thereisadriverforeachsupportedformat.Normallythisisaccomplis
·
2009-04-30 14:00
Google App Engine的JRuby现状:用于
DataStore
的DataMapper适配器,Reggae
自从GoogleAppEngine支持Java应用之后,JRuby应用就现身GAE了。不过,还是存在着一些限制,JRuby的NickSieger列出了其中的一部分,包括:-没有RMagick/ImageScience/attachment_fu,甚至连ImageVoodoo都没有(没有javax.image的API)。Google有它自己的图片操作API。[..]-每个应用最多1000个文件。由于
Werner Schuster
·
2009-04-27 00:00
Google App Engine的JRuby现状:用于
DataStore
的DataMapper适配器,Reggae
自从GoogleAppEngine支持Java应用之后,JRuby应用就现身GAE了。不过,还是存在着一些限制,JRuby的NickSieger列出了其中的一部分,包括:-没有RMagick/ImageScience/attachment_fu,甚至连ImageVoodoo都没有(没有javax.image的API)。Google有它自己的图片操作API。[..]-每个应用最多1000个文件。由于
Werner Schuster
·
2009-04-27 00:00
DataModel and
DataStore
equivalencies - Ext JS
Hello,verynewtoEXThere.Iwassettingupsometestlastweektorunyui-extaroundtheblock.WithGridforexample,Iwasabletograbtheid(xmlDataModel)whichImademeaningful:grid.on('rowclick',function(grid,rowIndex){alert
eimhee
·
2009-04-20 23:00
c
xml
ext
UP
yui
problem with data.Store and JSON data - Ext JS
I'vebeenlookinguptheforumsandtryingforafewdaysbutstillcan'tgetmyJSONdatato"goinside"
datastore
.
eimhee
·
2009-04-20 23:00
json
PHP
ext
Firebug
yui
About clearFilter? - Ext JS
HiIwonderisthereanywaytocallclearFilterina
datastore
andinthegriddon'tappearallrecordfiltered,ImeanIamdoingaprocessoverallrecordsinthestore
eimhee
·
2009-04-20 23:00
ext
possible bug in ds.remove(record)? - Ext JS
methodErroroccurredintheGridView.stripeRows()varhasAlt=re.test(row.className);report"rowhasnoproperties"thereisanotherpossiblebugin
datastore
.getModifi
eimhee
·
2009-04-19 00:00
ext
Fire clear event when Store is empty? - Ext JS
Justasuggestionandmaybethisdoesn'tmakesenseinallcases.ButIthinkitwouldbeusefultofirethecleareventona
datastore
ifyouremovealltherecords.IeIhave3recordsinmystoreandcallremoveonall3
eimhee
·
2009-04-19 00:00
ext
IE
UP
platform builder was unable to read the device settings from the
datastore
问题解决
本文章主要讲的是当安装完CE6后,会发现PlatformBuilderforCE5的ConnectivityOptions不好用了,即使修改设置后点Apply也无法把新设置保存住在完全卸载CE6和VS2005后,点PB5的ConnectivityOptions会弹出这个错误:PlatformBuilderwasunabletoreadthedevicesettingsfromtheDatastor
wirror800
·
2009-04-17 17:00
c
Path
Windows 7 Shell 命令大名单
Windows7Onlyshell:Librariesshell:MusicLibraryshell:VideosLibraryshell:OtherUsersFoldershell:DeviceMeta
dataStore
shell
佚名
·
2009-04-08 11:51
GAE 中的urlfetch (替代python中的urlopen) 和其他service API
GAE的service API主要有以下几种: 1
Datastore
2 Memcache 3 URL Fetch 4 Mail 5 Images 6 Google Accounts
bluky999
·
2009-04-03 14:00
python
socket
Google
GAE
GAE 中的urlfetch (替代python中的urlopen) 和其他service API
阅读更多GAE的serviceAPI主要有以下几种:1
Datastore
2Memcache3URLFetch4Mail5Images6GoogleAccounts7UsingGoogleDataServices
bluky999
·
2009-04-03 14:00
GAE
Python
Google
Socket
GAE 中的urlfetch (替代python中的urlopen) 和其他service API
阅读更多GAE的serviceAPI主要有以下几种:1
Datastore
2Memcache3URLFetch4Mail5Images6GoogleAccounts7UsingGoogleDataServices
bluky999
·
2009-04-03 14:00
GAE
Python
Google
Socket
从GAE
datastore
联想到key-value database的应用
当然使用GAE的时候是感觉不到bigtable的存在的,因为我们直接使用的是封装好的google.appengine.
datastore
。
harry
·
2009-03-31 18:00
sql
框架
orm
Google
GAE
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