jBPM3.12用户指南介绍

jBPM3.12用户指南介绍

这是Jboss 的jBPM3.12框架的用户指南的中文翻译。我的翻译风格是中英文对照，只翻译部分我认为重要的，不翻译简单的英文，以免浪费你我的时间。 同时，对于其中的部分内容，我会在翻译中做出解释和写上我的理解。

Chapter5.Deployment部署

jBPM is an embeddable BPM engine, which means that you can take jBPM and embed it into your own java project, rather then installing a separate product and integrate with it. One of the key aspects that make this possible is minimizing the dependencies. This chapter discusses the jbpm libraries and their dependencies.

jBPM是一个嵌入式的BPM（业务程序管理）引擎。本章讨论jbpm库和它的依赖库。

5.1.Java runtime environment

jBPM 3 requires J2SE 1.4.2+

5.2.jBPM libraries

jbpm-[version].jar is the library with the core jbpm functionality.是jbpm的核心功能库。

jbpm-identity-[version].jar is the (optional) library containing an identity component as described in Section11.11, “The identity component”.

可选的，这个库包含了身份验证组件。用于流程的参与者的管理。

5.3.Third party libraries第三方库

In a minimal deployment, you can create and run processes with jBPM by putting only the commons-logging and dom4j library in your classpath. Beware that persisting processes to a database is not supported. The dom4j library can be removed if you don't use the process xml parsing, but instead build your object graph programatically.

最小的jbpm部署，只需要核心jbpm库和commons-logging库，以及dom4j库到你的classpath中。此时，不支持持久化业务程序到数据库。

Table5.1.

Library库	Usage用途	Description描述	Directory目录
commons-logging.jar	logging in jbpm and hibernate	The jBPM code logs to commons logging. The commons logging library can be configured to dispatch the logs to e.g. java 1.4 logging, log4j, ... See the apache commons user guide for more information on how to configure commons logging. if you're used to log4j, the easiest way is to put the log4j lib and a log4j.properties in the classpath. commons logging will automatically detect this and use that configuration.	lib/jboss (from jboss 4.0.3)
dom4j-1.6.1.jar	process definitions and hibernate persistence	xml parsing	lib/dom4j

A typical deployment for jBPM will include persistent storage of process definitions and process executions. In that case, jBPM does not have any dependencies outside hibernate and its dependent libraries.

典型的jBPM部署包括持久化业务程序定义和执行的功能。 需要Hibernate

Of course, hibernate's required libraries depend on the environment and what features you use. For details refer to the hibernate documentation. The next table gives an indication for a plain standalone POJO development environment.

下面的表给出了简单的标准POJO部署环境需要的第三方库。

jBPM is distributed with hibernate 3.1 final. But it can also work with 3.0.x. In that case, you might have to update a few hibernate queries in the hibernate.queries.hbm.xml configuration file. For more info about customizing queries, see Section7.6, “Customizing queries”

Table5.2.

Library库	Usage	Description	Directory
hibernate3.jar	hibernate persistence	the best O/R mapper	lib/hibernate (hibernate 3.1 final)
antlr-2.7.5H3.jar	used in query parsing by hibernate persistence	parser library	lib/jboss (from jboss 4.0.3)
cglib-2.1_2jboss.jar	hibernate persistence	reflection library used for hibernate proxies	lib/jboss (from jboss 4.0.3)
commons-collections.jar	hibernate persistence		lib/jboss (from jboss 4.0.3)
ehcache-1.1.jar	hibernate persistence (in the default configuration)	second level cache implementation.二级缓存实现。 When configuring a different cache provider for hibernate, this library is not required.	lib/hibernate
jaxen-1.1-beta-4.jar	process definitions and hibernate persistence	XPath library (used by dom4j)	lib/hibernate
jdbc2_0-stdext.jar	hibernate persistence		lib/hibernate
asm.jar	hibernate persistence	asm byte code library 二进制代码修改库	lib/hibernate
asm-attrs.jar	hibernate persistence	asm byte code library	lib/hibernate

The beanshell library is optional. If you don't include it, you won't be able to use the beanshell integration in the jbpm process language and you you'll get a log message saying that jbpm couldn't load the Script class and hence, the script element won't be available.

Beanshell库是可选的。

Table5.3.

Library	Usage	Description	Directory
bsh-1.3.0.jar	beanshell script interpreter	Only used in the script's and decision's. When you don't use these process elements, the beanshell lib can be removed, but then you have to comment out the Script.hbm.xml mapping line in the hibernate.cfg.xml	lib/jboss