andyj2ee

系統cvs to Git 遷移

遷移簡介

應用工具：cvs2git

工作原理：文件系統的copy, from cvs repository to export temp file, then import to Git repository.

使用條件: Git version 1.5.4.4 or later (我們的目標 git 庫版本：

git --version

git version 1.9.0

git --version
git version 1.9.0

cvs2git工具安裝

遷移過程

具體的遷移過程：

以下為遷移wxxr-core-framework

1. 在123.1上用cvs2git把cvs倉庫，導出成git的備份文件（blob file and dump file）

• cvs2git --blobfile=/tmp/cvs2git/output/git-blob-cfw.dat --dumpfile=/tmp/cvs2git/output/git-dump-cfw.dat --username=zhangjunqing --fallback-encoding=GBK /app/cvsroot/wxxr-projects/wxxr-core-framework
• 創建本地git倉庫 
  • git init --bare wxxr-core-framework.git

• 下載導出的git的備份文件到本地臨時目錄 **
  • cd /Users/zhangjq/temp/cvs2git
  • scp -r djboss@192.168.123.1:/tmp/cvs2git/output/git-* . 
• 用git的fast-import命令把從cvs導出的git備份文件導入剛創建的git倉庫** cd /Users/zhangjq/git/wxxr-core-framework/wxxr-core-framework.git** cat /Users/zhangjq/temp/cvs2git/git-blob-cfw.dat /Users/zhangjq/temp/cvs2git/git-dump-cfw.dat | git fast-import
• 在Stash 上創建遠程倉庫** 創建了framework-core 倉庫集，并在此倉庫集下創建了wxxr-core-framework, wxxr-core-web  等遠程倉庫**http://developer.corp.wxxr.com.cn/git/projects/FRMCORE/repos/wxxr-core-framework/browse
  •  
• 在本地執行** git branch -D TAG.FIXUP (執行git branch -a 沒有找到這個分支，為什么刪除？error: branch 'TAG.FIXUP' not found. )

• • git gc --prune=now

• • git remote add origin http://xxxxx@developer.corp.wxxr.com.cn/git/scm/frmcore/wxxr-core-framework.git

• • git push --all origin  (將本地的所有分支都推送到遠程主機)
  • git push -tags origin (最后，git push不會推送標簽（tag），除非使用-tags選項。)
• 至此，完成了wxxr-core-framework的遷移。下一步執行比較驗證。

Git 時不時地將這些對象打包至一個叫 packfile 的二進制文件以節省空間并提高效率。當倉庫中有太多的松散對象，或是手工調用git gc 命令，或推送至遠程服務器時，Git 都會這樣做。

附：遷移腳本

遷移驗證

用本地cvs代碼庫代碼與git下載的庫代碼比較，有$Revision$ 的少版本信息外，其它一切正常。

遷移報告

wxxr-core-framework

cvs2svn Statistics:
------------------
Total CVS Files:              3000
Total CVS Revisions:          9439
Total CVS Branches:          33449
Total CVS Tags:            3278944
Total Unique Tags:            2446
Total Unique Branches:          24
CVS Repos Size in KB:       159751
Total SVN Commits:            5260
First Revision Date:    Wed May 31 15:56:03 2006
Last Revision Date:     Sun Jan  4 17:22:23 2015
------------------
Timings (seconds):
------------------
1065   pass1    CollectRevsPass
0   pass2    CleanMetadataPass
0   pass3    CollateSymbolsPass
648   pass4    FilterSymbolsPass
1   pass5    SortRevisionsPass
37   pass6    SortSymbolsPass
436   pass7    InitializeChangesetsPass
82   pass8    BreakRevisionChangesetCyclesPass
82   pass9    RevisionTopologicalSortPass
296   pass10   BreakSymbolChangesetCyclesPass
406   pass11   BreakAllChangesetCyclesPass
413   pass12   TopologicalSortPass
319   pass13   CreateRevsPass
159   pass14   SortSymbolOpeningsClosingsPass
15   pass15   IndexSymbolsPass
432   pass16   OutputPass
4391   total

fast-import wxxr-core-framework source code:

git-fast-import statistics:
---------------------------------------------------------------------
Alloc'd objects:      45000
Total objects:        41365 (      2260 duplicates                  )
blobs  :         7817 (       709 duplicates       6887 deltas of       7248 attempts)
trees  :        30677 (      1551 duplicates      12608 deltas of      29589 attempts)
commits:         2871 (         0 duplicates          0 deltas of          0 attempts)
tags   :            0 (         0 duplicates          0 deltas of          0 attempts)
Total branches:        2472 (        24 loads     )
marks:     1073741824 (     11397 unique    )
atoms:           2772
Memory total:          4532 KiB
pools:          2423 KiB
objects:          2109 KiB
---------------------------------------------------------------------
pack_report: getpagesize()            =       4096
pack_report: core.packedGitWindowSize = 1073741824
pack_report: core.packedGitLimit      = 8589934592
pack_report: pack_used_ctr            =      23737
pack_report: pack_mmap_calls          =        824
pack_report: pack_open_windows        =          1 /          1
pack_report: pack_mapped              =    7439224 /    7439224
---------------------------------------------------------------------

:)

posted @ 2015-01-13 18:53 java光環 閱讀(733) | 評論 (0) | 編輯 收藏

異常：java.lang.ArrayIndexOutOfBoundsException: 48188

posted @ 2014-12-17 15:27 java光環 閱讀(3696) | 評論 (0) | 編輯 收藏

如何成為一名軟件架構師？

Daniel Mohl是一名專業的軟件工程師/架構師，他的興趣包括理解各種復雜的編程語言、企業應用架構以及如何搭建業務與技術，他通曉F#、C#、 CoffeeScript、JavaScript、Erlang、ASP.NET、MVC、WPF、WCF、Sliverlight、SQL Server等技術。有著多年的軟件開發經驗。

他經常會被一些有潛力和有前途的程序員問到：“我要怎么做才能成為一名架構師？”說實話，這已經是老生常談的話題了，答案當然是視情況而定。不過他也根據自己的經驗，給大家一些建議，并且提供一些資料，助你快速走上架構師這條道路。

下面是Daniel Mohl所提出的列表，供大家參考：

首先，你必須不斷地尋求改善和提升自己。而提升自己的最好方法是閱讀，下面有幾本書，對我的軟件架構技能的提升很大。推薦給大家：

• 軟件架構師應該知道的97件事
• 企業應用架構模式
• 敏捷軟件開發，原則，模式和實踐
• 企業集成模式
• JavaScript語言精髓
• 利用遺留代碼有效地工作
• 領域驅動設計
• 企業架構策略
• 設計模式（四人幫）
• The Goal
• SOA設計模式
• SOA Principles of Service Design

除了閱讀，還有沒有其他需要注意的、或者在平時需要關注的東西呢？

• 每隔一兩年學習一門新語言，F#是個不錯的選擇。
• 選擇一個重點領域，但是盡可能對許多技術有個高層次的理解
• 對你所關注的重點領域，開通一個博客并且繼續拓展該領域的知識面，讓自己漸漸成為一名專家。
• 與不同的技術、編程語言、設計模式和結構等（甚至是它并沒有在日常中給予你直接的幫助）打交道。你永遠都不知道這些知識是否會在未來派上用場，但是對你絕對是有益無害。
• 根據你的目標受眾來談論“語言”。作為一名架構師，你將會與各種各樣等級的人打交道，并且他們對技術的理解也會有所不同。所以要學會調整你的講解方式，做到因人制宜，讓他們能夠理解。
• 閱讀博客、觀看/參加Twitter或G+、聽播客、讀雜志、參加用戶小組會議和技術會議，并且在這些會議上踴躍發言。這些都會給你帶來無窮無盡的知識和樂趣，建立自己的“品牌”和提供交流機會。
• 紀律是關鍵。永遠做你自己最喜歡的工作，即使它聽起來不那么有趣。每天安排時間學習一些新的東西，即使是15分鐘也可，千萬不要被其他事情占用了這段時間。
• 開啟博客之旅。我發現，與閱讀比起來，把東西寫下來會讓你有更深入的理解。
• 利用好“閑暇時間”，這段時間可以拿本雜志讀讀，或者去聽聽播客等。
• 了解各種可用的開發工具，可以使架構師的工作更好、更有效
• 看許多不同項目里的架構
• 學習各個項目的管理方法
• 學習一些評估技術，對業務可以提供有價值的評估

上面是作者總結出來的列表，雖然看起來有點枯燥無味，但在整個軟件開發過程中是樂趣無窮的。如果你還有更好的建議，歡迎與我們分享。

來自：How to Become a Software Architect

posted @ 2014-06-18 22:49 java光環| 編輯 收藏

Maven3 在Mac平臺安裝

posted @ 2011-05-31 14:12 java光環 閱讀(3966) | 評論 (0) | 編輯 收藏

jboss AS 使用websphere MQ 連接方式

posted @ 2009-08-04 14:00 java光環 閱讀(845) | 評論 (0) | 編輯 收藏

了解OptimalJ

開發工具

定制

架構師

只讀

posted @ 2009-03-19 12:59 java光環 閱讀(297) | 評論 (0) | 編輯 收藏

tomcat 如何跟蹤調試

posted @ 2008-08-28 15:46 java光環 閱讀(1646) | 評論 (1) | 編輯 收藏

linux 下的jadclipse plugin 的安裝

posted @ 2008-04-30 13:56 java光環 閱讀(1775) | 評論 (0) | 編輯 收藏

PSIVTRun jndi 驗證成功

posted @ 2008-03-25 14:45 java光環 閱讀(830) | 評論 (0) | 編輯 收藏

websphere mq 不能訪問集群中其它節點對列

posted @ 2008-03-23 22:06 java光環 閱讀(3234) | 評論 (0) | 編輯 收藏

tomcat 不能啟動

嚴重: IOException while loading persisted sessions: java.io.EOFException
嚴重: Exception loading sessions from persistent storage

原因是tomcat對硬盤的session讀取失敗，徹底解決辦法一下：將work下面的文件清空，主要是*.ser文件，或者只是刪除掉session.ser即可以解決。

posted @ 2008-03-20 16:41 java光環 閱讀(1182) | 評論 (1) | 編輯 收藏

mysql 用戶授權

posted @ 2008-03-06 18:15 java光環 閱讀(364) | 評論 (0) | 編輯 收藏

查主鍵沖突所在的表語句

posted @ 2007-11-28 14:19 java光環 閱讀(689) | 評論 (0) | 編輯 收藏

win xp 下實現的linux MQ6.0 遠程隊列管理

posted @ 2007-10-19 18:16 java光環 閱讀(1035) | 評論 (0) | 編輯 收藏

activemq-4.2 SNAPSHOT 嵌入到jboss-4.0.3sp1的異常

下載包為：
activemq-rar-4.2-incubator-SNAPSHOT-20070121.082022-22.rar

異常1：

??? [java] 00:58:46,434 WARN? [ServiceController] Problem starting service jboss.jca:service=RARDepl
oyment,name='activemq-rar-4.2-incubator-SNAPSHOT-20070121.082022-22.rar'
??? [java] javax.resource.spi.ResourceAdapterInternalException: Failed to startup an embedded broker
: xbean:broker-config.xml, due to: java.lang.IllegalStateException: Could not find valid implementat
ion for: 2.0
??? [java]????? at org.apache.activemq.ra.ActiveMQResourceAdapter.start(ActiveMQResourceAdapter.java
:83)
??? [java]????? at org.jboss.resource.deployment.RARDeployment.startService(RARDeployment.java:107)
??? [java]????? at org.jboss.system.ServiceMBeanSupport.jbossInternalStart(ServiceMBeanSupport.java:
274)
??? [java]????? at org.jboss.system.ServiceMBeanSupport.jbossInternalLifecycle(ServiceMBeanSupport.j
ava:230)
??? [java]????? at org.jboss.system.ServiceDynamicMBeanSupport.invoke(ServiceDynamicMBeanSupport.jav
a:110)
??? [java]????? at org.jboss.mx.server.RawDynamicInvoker.invoke(RawDynamicInvoker.java:150)
??? [java]????? at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:644)
??? [java]????? at org.jboss.system.ServiceController$ServiceProxy.invoke(ServiceController.java:943
)
??? [java]????? at $Proxy0.start(Unknown Source)
??? [java]????? at org.jboss.system.ServiceController.start(ServiceController.java:428)
??? [java]????? at sun.reflect.GeneratedMethodAccessor5.invoke(Unknown Source)
??? [java]????? at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java
:25)
??? [java]????? at java.lang.reflect.Method.invoke(Method.java:585)
??? [java]????? at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:141)

??? [java]????? at org.jboss.mx.server.Invocation.dispatch(Invocation.java:80)
??? [java]????? at org.jboss.mx.server.Invocation.invoke(Invocation.java:72)
??? [java]????? at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:245)
??? [java]????? at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:644)
??? [java]????? at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:176)
??? [java]????? at $Proxy33.start(Unknown Source)
??? [java]????? at org.jboss.deployment.SimpleSubDeployerSupport.startService(SimpleSubDeployerSuppo
rt.java:330)
??? [java]????? at org.jboss.deployment.SimpleSubDeployerSupport.start(SimpleSubDeployerSupport.java
:112)
??? [java]????? at org.jboss.deployment.MainDeployer.start(MainDeployer.java:989)
??? [java]????? at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:790)
??? [java]????? at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:753)
??? [java]????? at sun.reflect.GeneratedMethodAccessor40.invoke(Unknown Source)
??? [java]????? at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java
:25)
??? [java]????? at java.lang.reflect.Method.invoke(Method.java:585)
??? [java]????? at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:141)

??? [java]????? at org.jboss.mx.server.Invocation.dispatch(Invocation.java:80)
??? [java]????? at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:118)

??? [java]????? at org.jboss.mx.server.Invocation.invoke(Invocation.java:74)
??? [java]????? at org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperatio
nInterceptor.java:127)
??? [java]????? at org.jboss.mx.server.Invocation.invoke(Invocation.java:74)
??? [java]????? at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:245)
??? [java]????? at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:644)
??? [java]????? at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:176)
??? [java]????? at $Proxy9.deploy(Unknown Source)
??? [java]????? at org.jboss.deployment.scanner.URLDeploymentScanner.deploy(URLDeploymentScanner.jav
a:319)
??? [java]????? at org.jboss.deployment.scanner.URLDeploymentScanner.scan(URLDeploymentScanner.java:
507)
??? [java]????? at org.jboss.deployment.scanner.AbstractDeploymentScanner$ScannerThread.doScan(Abstr
actDeploymentScanner.java:192)
??? [java]????? at org.jboss.deployment.scanner.AbstractDeploymentScanner.startService(AbstractDeplo
ymentScanner.java:265)
??? [java]????? at org.jboss.system.ServiceMBeanSupport.jbossInternalStart(ServiceMBeanSupport.java:
274)
??? [java]????? at org.jboss.system.ServiceMBeanSupport.jbossInternalLifecycle(ServiceMBeanSupport.j
ava:230)
??? [java]????? at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
??? [java]????? at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java
:25)
??? [java]????? at java.lang.reflect.Method.invoke(Method.java:585)
??? [java]????? at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:141)

??? [java]????? at org.jboss.mx.server.Invocation.dispatch(Invocation.java:80)
??? [java]????? at org.jboss.mx.server.Invocation.invoke(Invocation.java:72)
??? [java]????? at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:245)
??? [java]????? at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:644)
??? [java]????? at org.jboss.system.ServiceController$ServiceProxy.invoke(ServiceController.java:943
)
??? [java]????? at $Proxy0.start(Unknown Source)
??? [java]????? at org.jboss.system.ServiceController.start(ServiceController.java:428)
??? [java]????? at sun.reflect.GeneratedMethodAccessor5.invoke(Unknown Source)
??? [java]????? at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java
:25)
??? [java]????? at java.lang.reflect.Method.invoke(Method.java:585)
??? [java]????? at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:141)

??? [java]????? at org.jboss.mx.server.Invocation.dispatch(Invocation.java:80)
??? [java]????? at org.jboss.mx.server.Invocation.invoke(Invocation.java:72)
??? [java]????? at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:245)
??? [java]????? at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:644)
??? [java]????? at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:176)
??? [java]????? at $Proxy4.start(Unknown Source)
??? [java]????? at org.jboss.deployment.SARDeployer.start(SARDeployer.java:285)
??? [java]????? at org.jboss.deployment.MainDeployer.start(MainDeployer.java:989)
??? [java]????? at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:790)
??? [java]????? at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:753)
??? [java]????? at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:737)
??? [java]????? at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
??? [java]????? at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
??? [java]????? at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java
:25)
??? [java]????? at java.lang.reflect.Method.invoke(Method.java:585)
??? [java]????? at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:141)

??? [java]????? at org.jboss.mx.server.Invocation.dispatch(Invocation.java:80)
??? [java]????? at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:118)

??? [java]????? at org.jboss.mx.server.Invocation.invoke(Invocation.java:74)
??? [java]????? at org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperatio
nInterceptor.java:127)
??? [java]????? at org.jboss.mx.server.Invocation.invoke(Invocation.java:74)
??? [java]????? at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:245)
??? [java]????? at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:644)
??? [java]????? at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:176)
??? [java]????? at $Proxy5.deploy(Unknown Source)
??? [java]????? at org.jboss.system.server.ServerImpl.doStart(ServerImpl.java:453)
??? [java]????? at org.jboss.system.server.ServerImpl.org$jboss$system$server$ServerImpl$start$aop(S
erverImpl.java:330)
??? [java]????? at org.jboss.system.server.ServerImpl$start_N8025343665958530775.invokeNext(ServerIm
pl$start_N8025343665958530775.java)
??? [java]????? at com.wxxr.common.aop.bootrap.JBossServerStartupInterceptor.invoke(JBossServerStart
upInterceptor.java:36)
??? [java]????? at org.jboss.system.server.ServerImpl$start_N8025343665958530775.invokeNext(ServerIm
pl$start_N8025343665958530775.java)
??? [java]????? at org.jboss.system.server.ServerImpl.start(ServerImpl.java)
??? [java]????? at org.jboss.Main.boot(Main.java:187)
??? [java]????? at org.jboss.Main$1.run(Main.java:438)
??? [java]????? at java.lang.Thread.run(Thread.java:595)
??? [java] Caused by: java.lang.IllegalStateException: Could not find valid implementation for: 2.0
??? [java]????? at org.apache.xbean.spring.context.impl.XBeanHelper.createBeanDefinitionReader(XBean
Helper.java:48)
??? [java]????? at org.apache.xbean.spring.context.ClassPathXmlApplicationContext.loadBeanDefinition
s(ClassPathXmlApplicationContext.java:170)
??? [java]????? at org.springframework.context.support.AbstractRefreshableApplicationContext.refresh
BeanFactory(AbstractRefreshableApplicationContext.java:89)
??? [java]????? at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractAp
plicationContext.java:268)
??? [java]????? at org.apache.xbean.spring.context.ClassPathXmlApplicationContext.<init>(ClassPathXm
lApplicationContext.java:161)
??? [java]????? at org.apache.xbean.spring.context.ClassPathXmlApplicationContext.<init>(ClassPathXm
lApplicationContext.java:51)
??? [java]????? at org.apache.activemq.xbean.XBeanBrokerFactory.createBroker(XBeanBrokerFactory.java
:41)
??? [java]????? at org.apache.activemq.broker.BrokerFactory.createBroker(BrokerFactory.java:57)
??? [java]????? at org.apache.activemq.ra.ActiveMQResourceAdapter.start(ActiveMQResourceAdapter.java
:80)
??? [java]????? ... 92 more
??? [java] Caused by: java.lang.reflect.InvocationTargetException
??? [java]????? at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
??? [java]????? at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorIm
pl.java:39)
??? [java]????? at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAc
cessorImpl.java:27)
??? [java]????? at java.lang.reflect.Constructor.newInstance(Constructor.java:494)
??? [java]????? at org.apache.xbean.spring.context.impl.XBeanHelper.createBeanDefinitionReader(XBean
Helper.java:46)
??? [java]????? ... 100 more
??? [java] Caused by: java.lang.NoSuchMethodError: org.springframework.beans.factory.xml.XmlBeanDefi
nitionReader.setValidationMode(I)V
??? [java]????? at org.apache.xbean.spring.context.v2.XBeanXmlBeanDefinitionReader.<init>(XBeanXmlBe
anDefinitionReader.java:58)
??? [java]????? ... 105 more

解決辦法：
spring 的jar包有重復，刪除spring-1.4.jar，保留spring-2.0.jar


異常2：

??? [java] 01:02:27,663 INFO? [XBeanXmlBeanDefinitionReader] Loading XML bean definitions from class
?path resource [broker-config.xml]
??? [java] 01:02:27,927 WARN? [ServiceController] Problem starting service jboss.jca:service=RARDepl
oyment,name='activemq-rar-4.2-incubator-SNAPSHOT-20070121.082022-22.rar'
??? [java] javax.resource.spi.ResourceAdapterInternalException: Failed to startup an embedded broker
: xbean:broker-config.xml, due to: org.springframework.beans.factory.BeanDefinitionStoreException: U
nrecognized xbean element mapping: beans in namespace http://activemq.org/config/1.0
??? [java]????? at org.apache.activemq.ra.ActiveMQResourceAdapter.start(ActiveMQResourceAdapter.java
:83)
??? [java]????? at org.jboss.resource.deployment.RARDeployment.startService(RARDeployment.java:107)
??? [java]????? at org.jboss.system.ServiceMBeanSupport.jbossInternalStart(ServiceMBeanSupport.java:
274)
??? [java]????? at org.jboss.system.ServiceMBeanSupport.jbossInternalLifecycle(ServiceMBeanSupport.j
ava:230)
??? [java]????? at org.jboss.system.ServiceDynamicMBeanSupport.invoke(ServiceDynamicMBeanSupport.jav
a:110)
??? [java]????? at org.jboss.mx.server.RawDynamicInvoker.invoke(RawDynamicInvoker.java:150)
??? [java]????? at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:644)
??? [java]????? at org.jboss.system.ServiceController$ServiceProxy.invoke(ServiceController.java:943
)
??? [java]????? at $Proxy0.start(Unknown Source)
??? [java]????? at org.jboss.system.ServiceController.start(ServiceController.java:428)
??? [java]????? at sun.reflect.GeneratedMethodAccessor5.invoke(Unknown Source)
??? [java]????? at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java
:25)
??? [java]????? at java.lang.reflect.Method.invoke(Method.java:585)
??? [java]????? at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:141)

??? [java]????? at org.jboss.mx.server.Invocation.dispatch(Invocation.java:80)
??? [java]????? at org.jboss.mx.server.Invocation.invoke(Invocation.java:72)
??? [java]????? at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:245)
??? [java]????? at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:644)
??? [java]????? at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:176)
??? [java]????? at $Proxy33.start(Unknown Source)
??? [java]????? at org.jboss.deployment.SimpleSubDeployerSupport.startService(SimpleSubDeployerSuppo
rt.java:330)
??? [java]????? at org.jboss.deployment.SimpleSubDeployerSupport.start(SimpleSubDeployerSupport.java
:112)
??? [java]????? at org.jboss.deployment.MainDeployer.start(MainDeployer.java:989)
??? [java]????? at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:790)
??? [java]????? at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:753)
??? [java]????? at sun.reflect.GeneratedMethodAccessor40.invoke(Unknown Source)
??? [java]????? at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java
:25)
??? [java]????? at java.lang.reflect.Method.invoke(Method.java:585)
??? [java]????? at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:141)

??? [java]????? at org.jboss.mx.server.Invocation.dispatch(Invocation.java:80)
??? [java]????? at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:118)

??? [java]????? at org.jboss.mx.server.Invocation.invoke(Invocation.java:74)
??? [java]????? at org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperatio
nInterceptor.java:127)
??? [java]????? at org.jboss.mx.server.Invocation.invoke(Invocation.java:74)
??? [java]????? at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:245)
??? [java]????? at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:644)
??? [java]????? at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:176)
??? [java]????? at $Proxy9.deploy(Unknown Source)
??? [java]????? at org.jboss.deployment.scanner.URLDeploymentScanner.deploy(URLDeploymentScanner.jav
a:319)
??? [java]????? at org.jboss.deployment.scanner.URLDeploymentScanner.scan(URLDeploymentScanner.java:
507)
??? [java]????? at org.jboss.deployment.scanner.AbstractDeploymentScanner$ScannerThread.doScan(Abstr
actDeploymentScanner.java:192)
??? [java]????? at org.jboss.deployment.scanner.AbstractDeploymentScanner.startService(AbstractDeplo
ymentScanner.java:265)
??? [java]????? at org.jboss.system.ServiceMBeanSupport.jbossInternalStart(ServiceMBeanSupport.java:
274)
??? [java]????? at org.jboss.system.ServiceMBeanSupport.jbossInternalLifecycle(ServiceMBeanSupport.j
ava:230)
??? [java]????? at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
??? [java]????? at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java
:25)
??? [java]????? at java.lang.reflect.Method.invoke(Method.java:585)
??? [java]????? at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:141)

??? [java]????? at org.jboss.mx.server.Invocation.dispatch(Invocation.java:80)
??? [java]????? at org.jboss.mx.server.Invocation.invoke(Invocation.java:72)
??? [java]????? at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:245)
??? [java]????? at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:644)
??? [java]????? at org.jboss.system.ServiceController$ServiceProxy.invoke(ServiceController.java:943
)
??? [java]????? at $Proxy0.start(Unknown Source)
??? [java]????? at org.jboss.system.ServiceController.start(ServiceController.java:428)
??? [java]????? at sun.reflect.GeneratedMethodAccessor5.invoke(Unknown Source)
??? [java]????? at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java
:25)
??? [java]????? at java.lang.reflect.Method.invoke(Method.java:585)
??? [java]????? at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:141)

??? [java]????? at org.jboss.mx.server.Invocation.dispatch(Invocation.java:80)
??? [java]????? at org.jboss.mx.server.Invocation.invoke(Invocation.java:72)
??? [java]????? at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:245)
??? [java]????? at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:644)
??? [java]????? at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:176)
??? [java]????? at $Proxy4.start(Unknown Source)
??? [java]????? at org.jboss.deployment.SARDeployer.start(SARDeployer.java:285)
??? [java]????? at org.jboss.deployment.MainDeployer.start(MainDeployer.java:989)
??? [java]????? at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:790)
??? [java]????? at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:753)
??? [java]????? at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:737)
??? [java]????? at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
??? [java]????? at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
??? [java]????? at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java
:25)
??? [java]????? at java.lang.reflect.Method.invoke(Method.java:585)
??? [java]????? at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:141)

??? [java]????? at org.jboss.mx.server.Invocation.dispatch(Invocation.java:80)
??? [java]????? at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:118)

??? [java]????? at org.jboss.mx.server.Invocation.invoke(Invocation.java:74)
??? [java]????? at org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperatio
nInterceptor.java:127)
??? [java]????? at org.jboss.mx.server.Invocation.invoke(Invocation.java:74)
??? [java]????? at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:245)
??? [java]????? at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:644)
??? [java]????? at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:176)
??? [java]????? at $Proxy5.deploy(Unknown Source)
??? [java]????? at org.jboss.system.server.ServerImpl.doStart(ServerImpl.java:453)
??? [java]????? at org.jboss.system.server.ServerImpl.org$jboss$system$server$ServerImpl$start$aop(S
erverImpl.java:330)
??? [java]????? at org.jboss.system.server.ServerImpl$start_N8025343665958530775.invokeNext(ServerIm
pl$start_N8025343665958530775.java)
??? [java]????? at com.wxxr.common.aop.bootrap.JBossServerStartupInterceptor.invoke(JBossServerStart
upInterceptor.java:36)
??? [java]????? at org.jboss.system.server.ServerImpl$start_N8025343665958530775.invokeNext(ServerIm
pl$start_N8025343665958530775.java)
??? [java]????? at org.jboss.system.server.ServerImpl.start(ServerImpl.java)
??? [java]????? at org.jboss.Main.boot(Main.java:187)
??? [java]????? at org.jboss.Main$1.run(Main.java:438)
??? [java]????? at java.lang.Thread.run(Thread.java:595)
??? [java] Caused by: org.springframework.beans.factory.BeanDefinitionStoreException: Unrecognized x
bean element mapping: beans in namespace http://activemq.org/config/1.0
??? [java]????? at org.apache.xbean.spring.context.v2c.XBeanNamespaceHandler.parseBeanFromExtensionE
lement(XBeanNamespaceHandler.java:258)
??? [java]????? at org.apache.xbean.spring.context.v2c.XBeanNamespaceHandler.parse(XBeanNamespaceHan
dler.java:152)
??? [java]????? at org.apache.xbean.spring.context.v2.XBeanNamespaceHandler.parse(XBeanNamespaceHand
ler.java:49)
??? [java]????? at org.springframework.beans.factory.xml.BeanDefinitionParserDelegate.parseCustomEle
ment(BeanDefinitionParserDelegate.java:1147)
??? [java]????? at org.springframework.beans.factory.xml.BeanDefinitionParserDelegate.parseCustomEle
ment(BeanDefinitionParserDelegate.java:1137)
??? [java]????? at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.parseBe
anDefinitions(DefaultBeanDefinitionDocumentReader.java:150)
??? [java]????? at org.apache.xbean.spring.context.v2.XBeanBeanDefinitionDocumentReader.parseBeanDef
initions(XBeanBeanDefinitionDocumentReader.java:63)
??? [java]????? at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.registe
rBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:89)
??? [java]????? at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.registerBeanDefinit
ions(XmlBeanDefinitionReader.java:499)
??? [java]????? at org.apache.xbean.spring.context.v2.XBeanXmlBeanDefinitionReader.registerBeanDefin
itions(XBeanXmlBeanDefinitionReader.java:79)
??? [java]????? at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitio
ns(XmlBeanDefinitionReader.java:407)
??? [java]????? at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions
(XmlBeanDefinitionReader.java:357)
??? [java]????? at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions
(XmlBeanDefinitionReader.java:334)
??? [java]????? at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDe
finitions(AbstractBeanDefinitionReader.java:126)
??? [java]????? at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDe
finitions(AbstractBeanDefinitionReader.java:142)
??? [java]????? at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDe
finitions(AbstractBeanDefinitionReader.java:168)
??? [java]????? at org.springframework.context.support.AbstractXmlApplicationContext.loadBeanDefinit
ions(AbstractXmlApplicationContext.java:113)
??? [java]????? at org.apache.xbean.spring.context.ClassPathXmlApplicationContext.loadBeanDefinition
s(ClassPathXmlApplicationContext.java:180)
??? [java]????? at org.springframework.context.support.AbstractRefreshableApplicationContext.refresh
BeanFactory(AbstractRefreshableApplicationContext.java:94)
??? [java]????? at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractAp
plicationContext.java:294)
??? [java]????? at org.apache.xbean.spring.context.ClassPathXmlApplicationContext.<init>(ClassPathXm
lApplicationContext.java:161)
??? [java]????? at org.apache.xbean.spring.context.ClassPathXmlApplicationContext.<init>(ClassPathXm
lApplicationContext.java:51)
??? [java]????? at org.apache.activemq.xbean.XBeanBrokerFactory.createBroker(XBeanBrokerFactory.java
:41)
??? [java]????? at org.apache.activemq.broker.BrokerFactory.createBroker(BrokerFactory.java:57)
??? [java]????? at org.apache.activemq.ra.ActiveMQResourceAdapter.start(ActiveMQResourceAdapter.java
:80)
??? [java]????? ... 92 more
??? [java] 01:02:28,345 INFO? [RARDeployment] Required license terms exist, view META-INF/ra.xml in
.../deploy/jboss-local-jdbc.rar

解決辦法 ：
<beans? xmlns="

? <broker brokerName="sender-ws2" useJmx="true">
==》改成：
<beans>
?<broker brokerName="sender-ws2" useJmx="true"? xmlns="參考
http://www.mail-archive.com/activemq-users@geronimo.apache.org/msg06853.html

posted @ 2007-02-06 01:10 java光環 閱讀(1239) | 評論 (0) | 編輯 收藏

eclipse 中加入linked resource

posted @ 2006-08-14 10:39 java光環 閱讀(1342) | 評論 (0) | 編輯 收藏

輕松的五一

posted @ 2006-05-08 10:12 java光環 閱讀(663) | 評論 (0) | 編輯 收藏

一生中最應珍惜的十種人

posted @ 2006-02-28 14:41 java光環 閱讀(368) | 評論 (0) | 編輯 收藏

用maven 啟動 jboss 時出現異常：[java] FATAL ERROR in native method: JDWP No transports initialized, jvmtiError=JVMTI_ERROR_INTERNAL(113)

posted @ 2006-02-16 15:19 java光環 閱讀(8027) | 評論 (2) | 編輯 收藏

Oracle Blob/Clob 字段寫入時產生轉型異常Cast Exception

public void testAdd() throws Exception {
        byte[] buffer = new byte[1]; 
        buffer[0] = 1;
        Session s = null;
        try { 
            s = sf.openSession(); 
            Transaction tx = s.beginTransaction();
            BizUserStatistics us= new BizUserStatistics();
            us.setId(new Long(100));
            us.setStatisticsInfo(Hibernate.createClob(" "));

            s.save(us); 
            s.flush(); 
            s.refresh(us, LockMode.UPGRADE); 
//            CLOB clob = (CLOB)us.getStatisticsInfo(); 
            SerializableClob lob=(SerializableClob)us.getStatisticsInfo();
            CLOB lob2 = (CLOB)lob.getWrappedClob();     
            Writer out = lob2.getCharacterOutputStream();
            String fileName = "d:/process_log.sql";
            File f = new File(fileName); 
            FileInputStream fin = new FileInputStream(f);
 
            StringBuffer sb = new StringBuffer();
            for (int i = 0; i < 1000; i++){
                sb.append("<data>" + i + "</data>");
            }
            out.write(sb.toString());
            out.close();
            
            s.flush(); 
            tx.commit(); 
            } catch (Exception e) {
                e.printStackTrace(); 
            } finally {
                if (s != null)
                try {
                s.close(); 
                } catch (Exception e){}
            }

    }

posted @ 2006-02-14 16:35 java光環 閱讀(1240) | 評論 (0) | 編輯 收藏

利用scomp 生成指定package java jar 包命令

posted @ 2006-02-14 16:23 java光環 閱讀(1255) | 評論 (0) | 編輯 收藏

jboss service 本地方法調用

posted @ 2005-12-09 15:02 java光環 閱讀(432) | 評論 (0) | 編輯 收藏

WARN afterTransactionCompletion() was never called

警告: afterTransactionCompletion() was never called

執行了tx = session.beginTransaction();

但是后來沒處理tx

應該用tx.commit() or tx.rollback()

一般查詢時容易出現此問題

posted @ 2005-10-08 09:58 java光環 閱讀(1963) | 評論 (3) | 編輯 收藏

hibernate ant Hbm2JavaTask Exception of:org.xml.sax.SAXParseException: Attribute "insert" must be declared for element type "discriminator".

<discriminator type="java.lang.String" column="REGION_TYPE"
   length="10" force="false" insert="true"/>

Region.hbm.xml(15)
org.xml.sax.SAXParseException: Attribute "insert" must be declared for element type "discriminator".

        at org.apache.xerces.util.ErrorHandlerWrapper.createSAXParseException(Unknown Source)
        at org.apache.xerces.util.ErrorHandlerWrapper.error(Unknown Source)
        at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source)
        at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source)
        at org.apache.xerces.impl.dtd.XMLDTDValidator.addDTDDefaultAttrsAndValidate(Unknown Source)
        at org.apache.xerces.impl.dtd.XMLDTDValidator.handleStartElement(Unknown Source)
        at org.apache.xerces.impl.dtd.XMLDTDValidator.emptyElement(Unknown Source)
        at org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanStartElement(Unknown Source)
        at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(
Unknown Source)
        at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
        at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
        at org.apache.xerces.parsers.DTDConfiguration.parse(Unknown Source)
        at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
        at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
        at org.jdom.input.SAXBuilder.build(Unknown Source)
        at org.jdom.input.SAXBuilder.build(Unknown Source)
        at org.jdom.input.SAXBuilder.build(Unknown Source)
        at net.sf.hibernate.tool.hbm2java.CodeGenerator.main(CodeGenerator.java:100)
        at net.sf.hibernate.tool.hbm2java.Hbm2JavaTask.processFile(Hbm2JavaTask.java:149)
        at net.sf.hibernate.tool.hbm2java.Hbm2JavaTask.execute(Hbm2JavaTask.java:97)
        at org.apache.tools.ant.Task.perform(Task.java:341)
        at org.apache.commons.jelly.tags.ant.AntTag.doTag(AntTag.java:185)
        at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:233)
        at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:89)
        at org.apache.maven.jelly.tags.werkz.MavenGoalTag.runBodyTag(MavenGoalTag.java:79)
        at org.apache.maven.jelly.tags.werkz.MavenGoalTag$MavenGoalAction.performAction(MavenGoalTag
.java:110)
        at com.werken.werkz.Goal.fire(Goal.java:639)
        at com.werken.werkz.Goal.attain(Goal.java:575)
        at com.werken.werkz.Goal.attainPrecursors(Goal.java:488)
        at com.werken.werkz.Goal.attain(Goal.java:573)
        at org.apache.maven.plugin.PluginManager.attainGoals(PluginManager.java:671)
        at org.apache.maven.MavenSession.attainGoals(MavenSession.java:263)
        at org.apache.maven.cli.App.doMain(App.java:488)
        at org.apache.maven.cli.App.main(App.java:1239)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:324)
        at com.werken.forehead.Forehead.run(Forehead.java:551)
        at com.werken.forehead.Forehead.main(Forehead.java:581)

build:
----------------------------------
----------------------------------
solution : 升級hiberate verion 2.1.8
----------------------------------
----------------------------------
改maven ：project.xml
<dependency>
   <groupId>hibernate</groupId>
   <artifactId>hibernate</artifactId>
   <version>2.1.8</version>
   <properties>
    <ejb.manifest.classpath>true</ejb.manifest.classpath>
   </properties>
  </dependency>

這樣寫，也是沒有問題的
<discriminator type="java.lang.String" column="REGION_TYPE" length="10"/>

posted @ 2005-08-19 13:52 java光環 閱讀(4253) | 評論 (1) | 編輯 收藏

jasperreport 0.6.8 生成 excel 報表，目前還不能支持圖片

public class OfficeDrawing
{
    public static void main(String[] args)
        throws IOException
    {
// Create the workbook and sheets.
        HSSFWorkbook wb = new HSSFWorkbook();
HSSFSheet sheet5 = wb.createSheet("fifth sheet");
drawSheet5( sheet5, wb );

// Write the file out.
        FileOutputStream fileOut = new FileOutputStream("workbook.xls");
        wb.write(fileOut);
        fileOut.close();
    }

private static void drawSheet5( HSSFSheet sheet5, HSSFWorkbook wb ) throws IOException
    {

        // Create the drawing patriarch.  This is the top level container for
        // all shapes. This will clear out any existing shapes for that sheet.
        HSSFPatriarch patriarch = sheet5.createDrawingPatriarch();

        HSSFClientAnchor anchor;
        anchor = new HSSFClientAnchor(0,0,0,255,(short)2,2,(short)4,7);
        anchor.setAnchorType( 2 );
        patriarch.createPicture(anchor, loadPicture( "src/resources/logos/logoKarmokar4.png", wb ));

        anchor = new HSSFClientAnchor(0,0,0,255,(short)4,2,(short)5,7);
        anchor.setAnchorType( 2 );
        patriarch.createPicture(anchor, loadPicture( "src/resources/logos/logoKarmokar4edited.png", wb ));

        anchor = new HSSFClientAnchor(0,0,1023,255,(short)6,2,(short)8,7);
        anchor.setAnchorType( 2 );
        HSSFPicture picture = patriarch.createPicture(anchor, loadPicture( "src/resources/logos/logoKarmokar4s.png", wb ));
        picture.setLineStyle( picture.LINESTYLE_DASHDOTGEL );

    }

private static int loadPicture( String path, HSSFWorkbook wb ) throws IOException
    {
        int pictureIndex;
        FileInputStream fis = null;
        ByteArrayOutputStream bos = null;
        try
        {
            fis = new FileInputStream( path);
            bos = new ByteArrayOutputStream( );
            int c;
            while ( (c = fis.read()) != -1)
                bos.write( c );
            pictureIndex = wb.addPicture( bos.toByteArray(), HSSFWorkbook.PICTURE_TYPE_PNG );
        }
        finally
        {
            if (fis != null)
                fis.close();
            if (bos != null)
                bos.close();
        }
        return pictureIndex;
    }

}

posted @ 2005-07-13 14:28 java光環 閱讀(1250) | 評論 (0) | 編輯 收藏

jboss 遠程方法調用RMIAdaptor 數組參數的梆定

posted @ 2005-06-14 13:41 java光環 閱讀(1226) | 評論 (0) | 編輯 收藏

關于iReport中生成報表中文顯示問題

posted @ 2005-06-14 13:30 java光環 閱讀(1517) | 評論 (0) | 編輯 收藏

hiberante persistence

create table miners (
   id BIGINT NOT NULL AUTO_INCREMENT,
   first_name VARCHAR(255),
   last_name VARCHAR(255),
   primary key (id)
)

package deadwood;
/**//**
 * @hibernate.class table="miners"
 */
public class Miner {
    private Long id;
    private String firstName;
    private String lastName;
    /**//**
     * @hibernate.id generator-class="native"
     */
    public Long getId() { return id; }
    public void setId(Long id) { this.id = id; }

    /**//**
     * @hibernate.property column="first_name"
     */
    public String getFirstName() { return firstName; }
    public void setFirstName(String firstName) { this.firstName = firstName; }

    /**//**
     * @hibernate.property column="last_name"
     */
    public String getLastName() { return lastName; }
    public void setLastName(String lastName) { this.lastName = lastName; }
}

Associations

 the Miner class we looked at was single table oriented, mapping to a single miners table. ORM solutions support ways to map associated tables to in memory objects ,
 

• Many to One/One to one - belongs_to/has_one
• One to Many (set) - has_many
• Many to Many (set) - has_and_belongs_to_many
• Single Table Inheritance
• Components (mapping > 1 object per table)

 As a comparative example, lets look at the many to one relationship. We are going to expand our Deadwood example from part I. We add to the Miner a many to one association with a GoldClaim object. This means there is a foreign key, gold_claim_id in the miners table, which links it to a row in the gold_claims table.

(Java)
public class Miner {
   // Other fields/methods omitted

    private GoldClaim goldClaim;
    /**//**
     * @hibernate.many-to-one column="gold_claim_id"
     *         cascade="save"
     */
    public GoldClaim getGoldClaim() { return goldClaim; }
    public void setGoldClaim(GoldClaim goldClaim) {
        this.goldClaim = goldClaim;
    }
}

 Transitive Persistence  
Its important for an ORM solution to provide a way to detect and cascade changes from in memory objects to the database, without the need to manually save() each one. Hibernate features a flexible and powerful version of this via declarative cascading persistence. 

Deleting Hibernate offers a number of different cascading behaviors for all associations types, giving it a high degree of flexibility. For example, setting cascade="all" will make GoldClaim save, update and delete along with its parent Miner, like so...

Miner miner = new Miner();
miner.setGoldClaim(new GoldClaim());
session.save(miner); // Saves Miner and GoldClaim objects.
session.delete(miner); // Deletes both of them.

Query Languages

 Hibernate has its own object oriented query language (Hibernate Query Language - HQL), which is deliberately very similar to SQL. How it differs is that it lets developers express their queries in terms of objects and fields instead of tables and columns. Hibernate translates the query into SQL optimized for your particular database. Obviously, inventing a new query language is very substantial task, but the expressiveness and power of it is one of Hibernate's selling points. 

Querying for Objects with HQL 
when you have to start navigating across objects with SQL, HQL can be very convenient alternative. Let's take a look at our sample queries for HQL.

// Find first Miner by name
Query q = session.createQuery("from Miner m where m.firstName = :name");
q.setParameter("name", "Elma");
Miner m = (Miner) q.setMaxResults(1).uniqueResult();

// Finds up to 10 miners older than 30, ordered by age.
Integer age = new Integer(30);
Query q = session.createQuery(
    "from Miner m where m.age > :age order by age asc");
List miners = q.setParameter("age", age).setMaxResults(10).list();

// Similar to join query above, but no need to manually join
Query q = session.createQuery(
   "from Miner m where m.goldClaim.squareArea = :area");
List minersWithSqA = q.setParameter("area", new Integer(1000)).list();

 Having covered some of the basics of fetching objects, let's turn your attention to how we can make fetching objects fast. The next section covers the means by which we can tune the performance. 

Performance Tuning

 Beyond just mapping objects to tables, robust ORM solutions need to provide ways to tune the performance of the queries. One of the risks of working with ORM's is that you often pull back too much data from the database. This tends to happen because it its very easy to pull back several thousand rows, with multiple SQL queries, with a simple statement like "from Miner". Common ORM strategies for dealing with this include Lazy fetching, outer join fetching and caching. 

What I mean by lazy is that when you fetch an object, the ORM tool doesn't fetch data from other tables, until you request the association. This prevents loading to much unneeded data.  Hibernate allows you to choose which associations are lazy.  This leads us to one of the great fallacies of ORM, that Lazy loading is always good. In reality, lazy loading is only good if you didn't need the data. Otherwise, you are doing with 2-1000+ queries what you could have done with one. This is dreaded N+1 select problem, where to get all the objects require N selects + 1 original selects. This problem gets much worse when you deal with collections..

Outer Joins and Explicit Fetching

Generally, one of the best way to improve performance is to limit the number of trips to the database. Better 1 big query than a few small ones. Hibernate has a number ways its handles the N+1 issue. Associations can be explicitly flagged for outer join fetching (via outer-join="true"), and you can add outer join fetching to HQL statements. For example...

/**//**
* @hibernate.many-to-one column="gold_claim_id"
*           cascade="save-update" outer-join="true"
*/
public GoldClaim getGoldClaim() { return goldClaim;  }

// This does one select and fetches both the Miner and GoldClaim
// and maps them correctly.
Miner m = (Miner) session.load(Miner.class, new Long(1));

// Issues a single select, instead of 1 + N (where N is the # miners)
List list = session.find("from Miner m left join fetch m.goldClaim");

While object caching isn't always going to be helpful or a performance silver bullet, Hibernate has a huge potential advantage here. It provides several levels of caching, including a session (UnitOfWork) level as well as an optional second level cache. You always use the '1st level' cache, as it prevents circular references and multiple trips to the database for the same object. Using a second level cache can allow much of the database state to stay resident in memory. This is especially useful for frequently read and reference data.

posted @ 2005-05-12 18:38 java光環 閱讀(569) | 評論 (0) | 編輯 收藏

shark 工作流引擎新特性 handling Deadlines

* Added new functionality of handling Deadlines.
  Shark now has defined client API, and its implementation for handling Activity deadlines.
  This API is supposed to be used by shark client to periodically ask shark to check deadines.
  Shark can be setup to re-evaluate deadlines every time deadline check is performed,
  or to initially calculate deadline times and store it into DB, and when asked to
  check deadlines, deadline limit is retrieved from DB.
  Shark comes with an example XPDL processes contained in deadlineexamples.xpdl file,
  that shows ASYNC and SYNC deadline handling.

  In shark deadline expressions along with all process variables, you can use special variables called:

      1. PROCESS_STARTED_TIME - the time when the process is started

      2. ACTIVITY_ACTIVATED_TIME - the time when process flow comes to activity and
                                   assignments for the activity are created

      3. ACTIVITY_ACCEPTED_TIME - the time when the first assignment for the activity is accepted

      NOTE: If activity is being rejected after its acceptance, or it is not accepted at all,
            the ACTIVITY_ACCEPTED_TIME is set to some maximum value in the future

   IMPORTANT:

      - There shouldn't be process variables (DataField or FormalParameter entities from XPDL)
        that have the same Id as the one of previously listed - The Java type of these variables is java.util.Date.

      - deadline expression result must be java.util.Date

      - if shark is setup to not re-evaluate deadlines, but to initially evaluate
        deadline limit times, ACTIVITY_ACCEPTED_TIME should not be used in expressions
        because it will contain some maximum time in the future.

   When starting Shark CORBA server, it can be configured if it will open a thread for checking Deadlines.

posted @ 2005-04-30 18:23 java光環 閱讀(922) | 評論 (0) | 編輯 收藏

shark 工作流引擎新特性MailToolAgent

* New MailToolAgent is included:

   - in Shark.conf file you have some settings for MailToolAgent (in fact for the DefaultMailMessageHandler)

   - when calling this tool agent, AppMode 0 means sending and 1 means receiving mail

   - when calling this tool agent, AppName is the name of MailMessageHandler class to use.
     We have default implementation of this interface called DefaultMailMessageHandler which
     needs 3 String IN parameters (destination address, mail subject and mail content) when sending mails,
     and 1 OUT or INOUT type parameter (message subject) when receiving mails.
     The example of usage for this tool agent is in test-JavaScript.xpdl -> Mail Handling process.

posted @ 2005-04-30 18:19 java光環 閱讀(513) | 評論 (0) | 編輯 收藏

shark 工作流引擎新特性 HistoryRelated assigment

* Included new HistoryRelated implementation of Assignment API - great contribution by Rich Robinson.
  You can use it by commenting standard AssignmentManager and uncommenting HistoryRelated assignment
  manager entries in Shark.conf (if you are configuring shark this way), and test it with
  Publish Document proces from test-JavaScript.xpdl.

I've attached the latest HistoryRelatedAssignmentManager class and also an updated
version of test-JavaScript.xpdl.

The class now supports the following extended attributes (the names of which
can be redefined in Shark.conf):

* ReassignToOriginalPerformer
* ReassignToOriginalPerformer
* DoNotAssignToPerformerOfActivity

As mentioned in the comments, one of each extended attribute should be
associated with any single activity definition.  If anybody wishes to
extend/modify this class in any way, one obvious improvment would be to allow
multiple copies of each extended attribute to be assigned to a single 
activity.
I would ideally have liked to do this, but I don't need such functionality at
the moment, and unfortunately don't have any more time to spend on it.

In order to get the class working, the following properties need to be 
specified
in Shark.conf:

#
# HistoryRelated assigment manager
#
AssignmentManagerClassName=org.enhydra.shark.assignment.HistoryRelatedAssignmentManager
HistoryRelatedAssignmentManager.username=admin
HistoryRelatedAssignmentManager.password=enhydra
HistoryRelatedAssignmentManager.extAttrReassignToOriginalPerformer=ReassignToOriginalPerformer
HistoryRelatedAssignmentManager.extAttrAssignToPerformerOfActivity=AssignToPerformerOfActivity
HistoryRelatedAssignmentManager.extAttrDoNotAssignToPerformerOfActivity=DoNotAssignToPerformerOfActivity

The XPDL example is a "publish document" process that describes the workflow
that may occur when publishing a web-based document.  Note that in the 
following,
a question mark represents either "1" or "2" depending on which moderator we 
are
referring to:

* Initially, an author creates a document and submits it to two moderators.  
The
"DoNotAssignToPerformerOfActivity" ext attrib is used for each
moderate_document_? activity to ensure that two different moderators moderate
the document and that the same moderator cannot moderate it twice.  

* Each moderator moderates the document and says whether or not it is ok by
setting the values of the moderate_?_ok WRD.  If OK, the moderator then has to
submit the document.  Note that the AssignToPerformerOfActivity ext attrib is
used to ensure that the moderator who moderated the document is assigned the
appropriate submit_document_? activity.

* If either moderator rejects the document, then the author has to update it.
Again, we use the AssignToPerformerOfActivity ext attrib to ensure that the
author who originally created the document has to update it.

* When updated, the author has to re-submit the document using the same
submit_document activity.  We use the ReassignToOriginalPerformer ext attrib 
to
ensure that the author who resubmits the document is the same author that
originally submitted it.

* Finally, when both the moderators are happy with the document, a publisher
reviews it (if he rejects it, we head back to "update document" - in exactly
the same way as if a moderator rejects it).  When the publisher is happy with
the document, he publishes it.  We use the AssignToPerformerOfActivity ext
attrib to ensure that the publisher who publishes the document is the same
publisher that reviewed it.

That's it...  I've tested both the class and the XPDL to some extent, but both
could do with some more testing if anybody would like to do it.

Let me know if you have any questions.

posted @ 2005-04-30 14:16 java光環 閱讀(568) | 評論 (0) | 編輯 收藏