starfeng
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// init
processEngine = Configuration.getProcessEngine();
repositoryService = processEngine.getRepositoryService();
executionService = processEngine.getExecutionService();
taskService = processEngine.getTaskService();
// deploy process
repositoryService.createDeployment().addResourcesFromZ ...
踏实与忽悠通常都在被视为一种能力, 最能代表忽悠的唐骏式人才的失败,将会将人引向重回踏实和本份, 至少评价的天平会偏向踏实的这一方.
很多时候,稍微夸张一些的自我介绍配合上一些空洞的号召,总能在推销自我时起到放大的作用, 但随着唐骏事件的深入人心, 空洞的渲染只会适得其反. 人本能的会对这类的词语提高警惕, 质疑是否是另一个唐骏式人物的再现, 正如现在的人, 对保险推销的相当排斥, 虽然保险人总能慷慨其词, 陈述其带来的无数利好, 结果依是少有人买帐.
更远一点的结果是, 人将更加现实的看待问题, 更多的理性放在现在能解决什么, 而非遥远的无限美好的可能.
构建序, 利用序
序有, 元素间的序, 精确度的序.
构建序时, 要注意规避元素变化对序的破坏.
o代表着"时间与命中"
http://dev.firnow.com/course/3_program/java/javaxl/200847/108456.html
二分: 基于有序队例的折半
B: 有序链表, 在 ...
1. Lucene索引原理
http://blog.csdn.net/geekwang/archive/2008/11/29/3410187.aspx
1) 倒排文件索引结构
2) 关键词, 文章号[出现频率], 出现位置
3) 关键字是按字符顺序排列的（lucene没有使用B树结构），因此 lucene可以用二元搜索算法快速定位关键词
4) 减小索引文件的大小，Lucene 对索引还使用了压缩技术
2. Lucene：基于Java的全文检索引擎简介
http://www.chedong.com/tech/lucene.html
Index
IndexWriter wr ...
1. WHERE a.class IN (ClassName1, ClassName2)
2. WHERE ?1 member of a.collectionProperty
query.setParameter(1, collectionClassInstance)
VS
a join a.collectionProperty as b where b.id=?
1. javax.transaction.xa.XAResource
2. ACID
3. Dirty read, unrepeatable read, phantom read, 第一类丢失失更新, 第二类丢失失更新
4. Lock
Row (share, exclusive), Table(Row(share, exclusive), exclusive)
悲观锁:for update，乐观锁: @version
5. Isolate
Read uncommitted: NONE except 第一类丢失失更新
Read Committed: ...
Ehcache.put
RegisteredEventListeners.notifyElementPut
cache.update(key, value)
QueryLoader.list // queryTranslator.getQuerySpaces()
factory.getSettings().isQueryCacheEnabled() && queryParameters.isCacheable()
listUsingQueryCache
QueryKey.generateQueryKey sql ...
Preparation:
read the document of GWT and understand the basic knowledge of GWT:
http://code.google.com/webtoolkit/doc/1.6/tutorial/index.html
Setup (BY eclipse plugin):
1. install gwt eclipse plugin:
refer to http://code.google.com/eclipse/docs/getting_started.html
2. download the e ...
http://beavercreekconsulting.com/blog/2008/10/hibernate-annotations-for-a-one-to-many-mapping/
Key:
the 2 Embedded ids can have manytoone relationship
http://www.iteye.com/news/16485
top --> right --> bottom --> left
content --> padding --> border --> margin
box-sizing: content-box / border-box
default value of IE6 is border-box, but the standard of W3C is content-box.
in,exists,=
in是把外表和内表作hash 连接
exists是对外表作loop循环，每次loop循环再对内表进行查询
name in ('a','b','c') <==> name='a' or name='b' or name='c'
better performance:
1. in小表
select * from 大表 where column1 in (select column1 from 小表)
2. exists大表
select * from 小表 where exists (select column1 from 大表 w ...
Use a new name to deploy the resource
web.xml
<resource-ref id="ResourceRef_1234567890123">
<description></description>
<res-ref-name>jdbc/xxxDataSource</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Conta ...
<!-- ********************** Cache Section ************************************ -->
<bean id="cacheServiceCacheManager" class="org.springframework.cache.ehcache.EhCacheManagerFactoryBean">
<property name="configLocation">
<v ...
<ehcache>
<!-- Sets the path to the directory where cache .data files are created.
If the path is a Java System Property it is replaced by
its value in the running VM.
The following properties are translated:
user.home - User's home directo ...
<?xml version="1.0" encoding="UTF-8"?>
<persistence version="1.0" xmlns="http://java.sun.com/xml/ns/persistence">
<persistence-unit name="xxx" transaction-type="RESOURCE_LOCAL">
<provider>org.hibernate. ...