JBoss & Spring. 임형준 충남대학교컴퓨터공학과데이터베이스시스템연구실 2008년 7월 24일목요일

Transcription

1 JBoss & Spring 임형준 충남대학교컴퓨터공학과데이터베이스시스템연구실 2008년 7월 24일목요일

2 JBoss Overview JBoss Enterprise Middleware System (JEMS) Enterprise Platforms Enterprise Frameworks SOA Platform Application Platform for Portals JBoss Seam JBoss Hibernate JBoss jbpm JBoss Rules Application Platform Other Application Server JBoss Microkernel Java Virtual Machine Operating System Windows, Unix, Other Linux 2

3 JBoss Enterprise Middleware System (JEMS) Open source middleware platform for SOA-based enterprise applications and services Plug-and-play architecture enables standardizing on JEMS products at your own pace Focused on simplifying development Your Applications and Services #1 #1 #1 JBoss App Server Apache Tomcat Hibernate JBoss Cache JBoss jbpm JBoss Portal JBoss Rules JBoss Eclipse IDE Your Platform Services JBoss Microkernel Multivendor Java VM, Operating System, Hardware 3

4 JEMS Architecture JBoss Portal Java Applications (EARs, WARs, JARs, JSPs, Servlets) JBoss Application Server 4.x (JMX Microkernel : JBossMX) Java Virtual Machine (Sun JVM, BEA JRockit, IBM VM, etc.) Operating System (Windows, Unix = Linux, Solaris, AIX, etc.) Hardware (CPU + Storage + Memory) 4 JSP/Servlet (Tomcat*) EJB (JBoss CMP) JMS (JBoss MQ) JDBC WS4EE (JBossWS) JTA (JBossJTA) JNDI (JBossNS) JCA (JBossJCA) JAAS (JBossSX) RMI-IIOP (jacorb) JAX-RPC JAXP JAXR SAAJ JACC Deployment API Management API Clustering Persistence (Hibernate*) Workflow (JBoss jbpm**) JBoss AOP* Caching (JBossCache*) JBoss Remoting* Custom Mbeans JBoss Eclipse IDE --- J2EE 1.4 Services implemented as JMX Mbeans --- Services beyond J2EE * Product can run inside JBoss AS or stand-alone ** Integration as MBean under development

5 Spring Framework 의구성 5

6 Spring Architecture Simple Example 6

7 Drools

8 What is a Drools? Drools 3 Released Thursday, June 1, 2006 Drools.NET now supports.net Framework v1.1 JBoss 는가트너가제시한 Simple Application 를위해서 DBMS 를제외한모든패키지 (BPM, BRE, SOA) 를포함 A Java Rules Engine implementation An object-oriented interface allows for more natural expression of business rules with regards to business objects 8

9 Drools Features Drools is designed to allow pluggeable language implementations Currently rules can be written in Java, Python and Groovy Drools is written in Java, but able to run on Java and.net. Drools provides for Declarative Programming and is flexible enough to match the semantics of your problem domain With Domain Specific Languages (DSL) via XML using a Schema defined for your problem domain Graphical editing tools, web based tools and developer productivity tools 9

10 Why Choose Drools? Open Source Declarative Programming Allow you to say What to do not How to do it Accessible business rules Logic and Data Separation Speed and Scalability Eclipse IDE Web based BRMS BRMS: Business rule management system 10

11 Drools Modules 11

12 Drools Layers 12

13 Drools Semantic Modules 13

14 Drools Flow view with GWT Diagram 14

15 Drools 설치 Drools 엔진다운로드및설치 drools-all-jdk5-2.5-final.jar antlr jar janino jar xml-apis jar xercesimpl jar Python이나 Groovy로룰파일을작성하려면 Classpath 설정변경 배포파일의 Readme.txt 참고 설치후 Eclipse 에 Plug-in 15

16 Rule File 작성 Ex) hello.drl <?xml version="1.0" encoding="euc-kr"?> <rule-set name="hello" xmlns=" xmlns:java=" xmlns:xs=" xs:schemalocation=" rules.xsd java.xsd"> <import>java.lang.object</import> <import>java.lang.string</import> <java:functions> public static void helloworld(java.lang.string hello) { System.out.println(hello + " World"); } public static void goodbyeworld(string goodbye) { System.out.println(goodbye + " Cruel World"); } </java:functions> <rule name="hello World"> <parameter identifier="hello"> <class>string</class> </parameter> <java:condition>hello.equals("hello")</java:condition> <java:consequence> helloworld( hello ); </java:consequence> </rule> <rule name="goodbye Cruel World"> <parameter identifier="goodbye"> <class>string</class> </parameter> <java:condition>goodbye.equals("goodbye")</java:condition> <java:consequence> goodbyeworld( goodbye ); </java:consequence> </rule> </rule-set> 16

17 Rule File Tag Import 자바의 import 와동일하게룰파일내에서사용할클래스를명시 java:functions 룰파일에서사용될함수. 자바의메소드와동일 Rule 하나의규칙을표현. 룰을실행할때필요한파라미터, 실행조건그리고조건충족시실행될코드로구성 17

18 Rule Tag Parameter 룰을실행하는데필요한파라미터값 identifier 속성을사용해서룰에서사용할파라미터의이름을지정 java:condition 룰을실행하기위한조건 java:consequence 조건이충족될경우실행될코드 18

19 Execute Java File using Rule File Ex) HelloExample.java package javacan.drools.test; import java.io.ioexception; import org.drools.factexception; import org.drools.integrationexception; import org.drools.rulebase; import org.drools.workingmemory; import org.drools.io.rulebaseloader; import org.xml.sax.saxexception; Result Value Hello World Goodbye Cruel World public class HelloExample { public static void main(string[] args) throws IntegrationException, SAXException, IOException, FactException { RuleBase rulebase = RuleBaseLoader.loadFromUrl( HelloExample.class.getResource("hello.drl") ); WorkingMemory workingmemory = rulebase.newworkingmemory(); workingmemory.assertobject("hello"); workingmemory.fireallrules(); // 첫번째실행 } workingmemory = rulebase.newworkingmemory(); workingmemory.assertobject("goodbye"); workingmemory.fireallrules(); // 두번째실행 } 19

20 DRL File 작성법 Agenda Group 로룰파일작성하기 예를들어가족수당을룰로만들경우에가족수당룰도여러가지경우의수가나올수있으므로 agenda 그룹으로만들어야함 rule "family-wifcn-pay" agenda-group "family no-loop when e : Employee (marry =="Y") then e.setbasicpay(e.getbasicpay() + 10); String log =" 가족수당 - 배우자 " + e.getbasicpay(); e.message.add(log); end rule "family-supcn-pay" agenda-group "family no-loop when e : Employee (children > 0, children <=4) then e.setbasicpay(e.getbasicpay() + (e.getchildren() *5)); end String log =" 가족수당 - 부양가족 " + e.getbasicpay(); e.message.add(log); 20