What's new in Drools 6 - London JBUG 2013

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●The SkyNet funding bill is passed. ●The system goes online on August 4th, 1997.●Human decisions are removed from strategic defense. ●SkyNet begins to learn at a geometric rate.●It becomes self-aware at 2:14am Eastern time, August 29th ●In a panic, they try to pull the plug. ●And, Skynet fights back

Mark Proctor

Project Lead

Monday, 5 August 13

Agenda

•Quick Intro - What are Rule Based Systems•KIE •5.x Critique•6.0 Improvements•UI•Content•Deployment•Spring and Camel•API•CDI•ScoreCards and PMML•JTMS•Phreak•Legacy Migrations

•Backward chaining Example•UberFire

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Quick Intro

What are Rule Based Systems

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4

VisionRobotics

Speech

Neural Nets Rule Base Systems/Expert System Tools

Understanding

NaturalLanguageSome Areas of

Artificial Intelligence

Some Areas of Artificial Intelligence

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Knowledge Representation and Reasoning

The study of Knowledge is Epistemology● Nature Structure and Origins of Knowledge● Core or AI

Rule based systems● Expert System tools● Knowledge Representation and Reasoning● Facilitate the codification of knowledge into a knowledge

base which can be used for reasoning

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It All Started Here Birth of CDSS

Dendral

Mycin

Baobab

Guidon

Neomycin

Teiresias Emycin WM

Puff

Sacon

Centaur

Gravida

Wheeze Clot

Onccocin

1970s

1980s

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Because Not Everyone Is As Smart As He Is

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1979 Rete Algorithm by Charles Forgy 8

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Clips and Jess

Clips 1986

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Clips 1995

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And some day we'll build him!!!

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What is a Rule

rule <rule_name> <attribute><value> when <conditions> then <actions>end

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Pattern Matching

Person( age >= 18 )field name restriction

constraintobject type

pattern

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13Two Phase System

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14Classes

AccountAccount

long accountNo

int balance

CashFlowCashFlow

Date date

int amount

AccountPeriodAccountPeriod

Date start

Date end

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rule “increase balance for AccountPeriod Credits” when ap : AccountPeriod() acc : Account( $accountNo : accountNo ) CashFlow( type == CREDIT, accountNo == $accountNo, date >= ap.start && <= ap.end, $ammount : ammount ) then acc.balance += $amount; end

select * from Account acc, Cashflow cf, AccountPeriod apwhere acc.accountNo == cf.accountNo and cf.type == CREDIT cf.date >= ap.start and cf.date <= ap.end

trigger : acc.balance += cf.amount

Credit Cashflow Rule

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Rules as a “view”

rule "Increase balance for AccountPeriod Credits"when ap : AccountPeriod( ) acc : Account( ) cf : CashFlow( type == CashFlowType.CREDIT, accountNo == acc.accountNo, date >= ap.start && <= ap.end )then acc.balance = acc.balance + cf.amount;end

rule "Decrease balance for AccountPeriod Debits"when ap : AccountPeriod( ) acc : Account( ) cf : CashFlow( type == CashFlowType.DEBIT, accountNo == acc.accountNo, date >= ap.start && <= ap.end )then acc.balance = acc.balance - cf.amount;end

CashFlowCashFlowCashFlowCashFlowdate amount type accountNo

12-Jan-12 100 CREDIT 12-Feb-12 200 DEBIT 118-May-12 50 CREDIT 19-May-12 75 CREDIT 1

AccountingPeriodAccountingPeriodstart end01-JAN-2012 31-MAR-2012

AccountAccountaccountNo balance1 0

CashFlowCashFlowCashFlowCashFlowdate amount type accountNo

12-Jan-12 100 CREDIT 19-May-12 75 CREDIT 1

CashFlowCashFlowCashFlowCashFlow

date amount type accountNo

2-Feb-12 200 DEBIT 1

AccountAccountaccountNo balance1 -25

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rule "Print blance for AccountPeriod" salience -50when ap : AccountPeriod() acc : Account( )then System.out.println( "Account Number " + acc.accountNo + " balance " + acc.balance );end

Conflict Resolution with Salience

AgendaAgendaAgenda

1 increase balance arbitrary

2 decrease balance

arbitrary

3 increase balance

arbitrary

4 print balance

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rule “increase balance for AccountPeriod Credits” ruleflow-group “calculation” when ap : AccountPeriod() acc : Account( $accountNo : accountNo ) CashFlow( type == CREDIT, accountNo == $accountNo, date >= ap.start && <= ap.end, $ammount : ammount ) then acc.balance += $amount; end

rule “Print blance for AccountPeriod” ruleflow-group “report” when ap : AccountPeriod() acc : Account( ) then System.out.println( acc.accountNo + “ : “ acc.balance ); end

ruleflow-group

RuleFlow

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Knowledge Is Everything

Platform Changes Overview

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KIE - Knowledge Is Everything24

KIE

Drools jBPMOptaPlanner UberFire

Guvnor

Drools-WB jBPM-WB

KIE-WB

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GitHub

URL:https://github.com/droolsjbpm/

Bootstrap project:https://github.com/droolsjbpm/droolsjbpm-build-bootstrap

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https://github.com/droolsjbpm/

https://github.com/droolsjbpm/

https://github.com/droolsjbpm/droolsjbpm-build-bootstrap

https://github.com/droolsjbpm/droolsjbpm-build-bootstrap

GitHub26

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Changes

Conventions:•droolsjbpm -> kie•knowlege -> kie

Examples•KnowledgeBase -> Kie•StatefulKnowledgeSession -> KieSession•StatelessKnowledgeSession - StatelesKieSession

Legacy API Adapter JAR•Most API’s should work with legacy adapter•KnowledegAgents have not been ported, PKG’s are not longer

the unit of deployment

DRL has not changed

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5.x Critique

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5.x Critique

•UI•Content•Deployment•Utilize

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5.x Critique

UI•GWT•but not easily extended•fixed layouts•no perspectives

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5.x Critique

Content•JCR•Performance issues•Everything stored as a blob•No tagging, branching etc.•Webdav, with limited Eclipse team provider integration.

•Single tree structure (packages)•Packages created project deployment units•no real alignment with industry stadard

•No easy rule use (only a single global area)•Loading “model” jars into packages•Poor hack, for dependency management

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5.x Critique32

Deployment•Simple Snapshot system•No real methodology•Doesn’t align with any industry standards

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5.x Critique

Utilize•Progmatic API only•Have to select all resources

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KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();

kbuilder.batch().add( newClassPathResource( "Model.drl", getClass() ), DRL ) .add( newClassPathResource( "Queries.drl", getClass() ), DRL ) .add( newClassPathResource( "General.drl", getClass() ), DRL ) .add( newClassPathResource( "Response.drl", getClass() ), DRL ) .add( newClassPathResource( "Events.drl", getClass() ), DRL ) .add( newClassPathResource( "UiView.drl", getClass() ), DRL ) .add( newClassPathResource( "Commands.drl", getClass() ), DRL ).build();

if ( kbuilder.hasErrors() ) { System.out.println( kbuilder.getErrors().toString() ); System.exit( 1 );}

KieBaseConfiguration kbaseConf = KnowledgeBaseFactory.newKnowledgeBaseConfiguration();kbaseConf.setOption( EqualityBehaviorOption.EQUALITY );

KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase( kbaseConf );kbase.addKnowledgePackages( kbuilder.getKnowledgePackages() );

Counter c = new Counter();ksession = kbase.newStatefulKnowledgeSession();

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6.0 UI

Improvements

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6.0 UI

UI•Modular•Extensible

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•Dynamic and Flexible layouts•Perspectives

UF

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VideoUI Overview

https://www.youtube.com/watch?v=ckAznbOOV-4

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6.0 UI38

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6.0 UI Content and Authoring

Improvements

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6.0 Content

•GIT•Industry standard tooling

•Multiple repositories and projects•All projects are Maven multi-module projects•Projects can be shared, via pom dependencies•Both Kie projects, and any other maven jar

•Local Maven repository management for model jars

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6.0 Content

Simple POM Editor

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6.0 Content

Build And Deploy

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6.0 Content

Local Maven repository and manager

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VideoMaven, Builder an Deploy


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6.0 Content

Create or Clone Git Repositories

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6.0 Deployment Improvements

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6.0 Deployment48

Deployment•Maven JARS•All projects are just maven projects•All projects compile to JARS•JARS are installed to local M2_REPO, which is expose on http•Can “deploy” to external repos.•Uses Maven industry methdologies

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6.0 Utilization

Improvemets

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KieModules

•Discovery•META-INF/kmodule.xml

•Convention based•No programmatic api for building•Multiple Named entities•Inheritence of Resources•Defaults for lazy people•Version built in a standard

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Git Hub Examples

https://github.com/droolsjbpm/drools/tree/master/drools-examples-api

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KieModules

Defaults and JAR on Classpath•Creates one KieBase, adds all resources from that JAR•See kmodule.xsd in kie-api jar

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<kmodule xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://jboss.org/kie/6.0.0/kmodule"> </kmodule>

KieServices ks = KieServices.Factory.get();KieContainer kContainer = ks.getKieClasspathContainer();

KieSession kSession = kContainer.newKieSession();kSession.setGlobal("out", out);kSession.insert(new Message("Dave", "Hello, HAL. Do you read me, HAL?"));kSession.fireAllRules();

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KieModules

Named Entities and JAR on Classpath•Creates one KieBase•Includes resources from package matching kbase name

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<kmodule xmlns="http://jboss.org/kie/6.0.0/kmodule">

<kbase name="namedkiesession"> <ksession name="ksession1"/> </kbase>

</kmodule>

KieServices ks = KieServices.Factory.get();KieContainer kContainer = ks.getKieClasspathContainer();

KieSession kSession = kContainer.newKieSession("ksession1");kSession.setGlobal("out", out);kSession.insert(new Message("Dave", "Hello, HAL. Do you read me, HAL?"));kSession.fireAllRules();

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http://jboss.org/kie/6.0.0/kmodule

http://jboss.org/kie/6.0.0/kmodule

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KieModules

Named Entities, with inheritence and JAR on Classpath•Two projects, one “includes” from the other

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<dependency> <groupId>org.drools</groupId> <artifactId>named-kiesession</artifactId> <version>6.0.0-SNAPSHOT</version></dependency>

<kbase name="kiebaseinclusion" includes="namedkiebase"> <ksession name="ksession2"/></kbase>

KieServices ks = KieServices.Factory.get();KieContainer kContainer = ks.getKieClasspathContainer();KieSession kSession = kContainer.newKieSession("ksession2");kSession.setGlobal("out", out);

kSession.insert(new Message("Dave", "Hello, HAL. Do you read me, HAL?"));kSession.fireAllRules();

kSession.insert(new Message("Dave", "Open the pod bay doors, HAL."));kSession.fireAllRules();

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KieModules

Package location can over-ride kbase name defaults

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<kbase name="WumpusMainKB" packages="org.drools.games.wumpus.server, org.drools.games.wumpus.server.view"> <ksession name="WumpusMainKS" /></kbase>

<kbase name="WumpusClientKB" packages="org.drools.games.wumpus.client"> <ksession name="WumpusClientKS"/></kbase>

KieContainer kc = KieServices.Factory.get().getKieClasspathContainer();final KieSession serverKsession = kc.newKieSession( "WumpusMainKS");final KieSession clientKsession = kc.newKieSession("WumpusClientKS");

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Dynamic KieModules

•JARs can be loaded from URLs into KieRepository•Once loaded they can be resolved via ReleaseId

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KieServices ks = KieServices.Factory.get();KieRepository kr = ks.getRepository();

KieModule kModule = kr.addKieModule(ks.getResources().newFileSystemResource( getFile("default-kiesession")));

KieContainer kContainer = ks.newKieContainer(kModule.getReleaseId());

KieSession kSession = kContainer.newKieSession();kSession.setGlobal("out", out);

Object msg1 = createMessage(kContainer, "Dave", "Hello, HAL. Do you read me, HAL?");kSession.insert(msg1);kSession.fireAllRules();

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Dynamic KieModules

kie-ci use embedded maven for remote discovery

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<dependency> <groupId>org.kie</groupId> <artifactId>kie-ci</artifactId></dependency>

KieServices ks = KieServices.Factory.get();

// Install example1 in the local maven repo before to do thisKieContainer kContainer = ks.newKieContainer( ks.newReleaseId("org.drools", "named-kiesession", "6.0.0-SNAPSHOT"));

KieSession kSession = kContainer.newKieSession("ksession1");kSession.setGlobal("out", out);

Object msg1 = createMessage(kContainer, "Dave", "Hello, HAL. Do you read me, HAL?");kSession.insert(msg1);kSession.fireAllRules();

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Dynamic Modules

•Kie-CI and Automatic updates with KieScanner•Replaces KnowledgeAgent•Mave resolves new artifacts dynamically at runtime•SNAPSHOT, LATEST, STABLE and version ranges supported•See KieRepositoryScannerTest

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KieServices ks = KieServices.Factory.get();ReleaseId releaseId = ks.newReleaseId("org.kie", "scanner-test", "1.0-SNAPSHOT");

InternalKieModule kJar1 = createKieJar(ks, releaseId, "rule1", "rule2");KieContainer kieContainer = ks.newKieContainer(releaseId);

MavenRepository repository = getMavenRepository();repository.deployArtifact(releaseId, kJar1, kPom);

// create a ksesion and check it works as expectedKieSession ksession = kieContainer.newKieSession("KSession1");checkKSession(ksession, "rule1", "rule2");

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Dynamic Modules61

// create a new kjarInternalKieModule kJar2 = createKieJar(ks, releaseId, "rule2", "rule3");

// deploy it on mavenrepository.deployArtifact(releaseId, kJar2, kPom);

// since I am not calling start() on the scanner it means it won't have automatic scheduled scanningKieScanner scanner = ks.newKieScanner(kieContainer);

// scan the maven repo to get the new kjar version and deploy it on the kcontainerscanner.scanNow();

// create a ksesion and check it works as expectedKieSession ksession2 = kieContainer.newKieSession("KSession1");checkKSession(ksession2, "rule2", "rule3");

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Programmatic API

•Builder API, for tooling integration•Incremental compilation, and problem reporting

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KieServices ks = KieServices.Factory.get();KieRepository kr = ks.getRepository();KieFileSystem kfs = ks.newKieFileSystem();

kfs.write("src/main/resources/org/kie/example5/HAL5.drl", getRule());

KieBuilder kb = ks.newKieBuilder(kfs);

kb.buildAll(); // kieModule is automatically deployed to KieRepository if successfully built.if (kb.getResults().hasMessages(Level.ERROR)) { throw new RuntimeException("Build Errors:\n" + kb.getResults().toString());}

KieContainer kContainer = ks.newKieContainer(kr.getDefaultReleaseId());

KieSession kSession = kContainer.newKieSession();kSession.setGlobal("out", out);

kSession.insert(new Message("Dave", "Hello, HAL. Do you read me, HAL?"));kSession.fireAllRules();

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kmodule.xml Editor63

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6.0 Spring Camel

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Spring and Camel65

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Spring and Camel66

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Spring and Camel67

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Spring and Camel68

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6.0 CDI

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CDI Context and Dependency Injection

CDI injects named entities from the kmodule.xml

Injectable types•KieServices•KieContainer•KieBase•KieSession•StatelessKieSession

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KieContainer71

@Injectprivate KieContainer kContainer;

@Inject@KReleaseId(groupId = "jar1", artifactId = "art1", version = "1.1")private KieContainer kContainerv11;

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KBase72

@Inject @KBase(value="jar1.KBase1", name="kb2") @KReleaseId( groupId = "jar1", artifactId = "art1", version = "1.0")private KieBase jar1KBase1kb2;

@Inject@KBase(value="jar1.KBase1", name="kb2") @KReleaseId( groupId = "jar1", artifactId = "art1", version = "1.0")private KieBase jar1KBase1kb22;

@Injectprivate KieBase defaultClassPathKBase;

@Inject@KReleaseId( groupId = "jar1", artifactId = "art1", version = "1.0") private KieBase defaultDynamicKBase;

@Inject@KBase("jar1.KBase1") @KReleaseId( groupId = "jar1", artifactId = "art1", version = "1.0")private KieBase jar1KBase1v10;

@Inject@KBase("jar1.KBase1") @KReleaseId(groupId = "jar1", artifactId = "art1", version = "1.1")private KieBase jar1KBase1v11;

@Inject@KBase(value="jar1.KBase1", name="kb1")@KReleaseId( groupId = "jar1", artifactId = "art1", version = "1.0")private KieBase jar1KBase1kb1;

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KSession73

@Injectprivate KieSession defaultClassPathKSession;

@Inject@KReleaseId( groupId = "jar1", artifactId = "art1", version = "1.0") private KieSession defaultDynamicKSession;

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KSession74

@Inject@KSession("jar1.KSession2") @KReleaseId( groupId = "jar1", artifactId = "art1", version = "1.0" )private KieSession kbase1ksession2v10;

@Inject@KSession("jar1.KSession2") @KReleaseId( groupId = "jar1", artifactId = "art1", version = "1.1" )private KieSession kbase1ksession2v11;

@Inject@KSession(value="jar1.KSession2", name="ks1") @KReleaseId( groupId = "jar1", artifactId = "art1", version = "1.0" )private KieSession kbase1ksession2ks1;

@Inject@KSession(value="jar1.KSession2", name="ks2") @KReleaseId( groupId = "jar1", artifactId = "art1", version = "1.0" )private KieSession kbase1ksession2ks2 ;

@Inject@KSession(value="jar1.KSession2", name="ks2") @KReleaseId( groupId = "jar1", artifactId = "art1", version = "1.0" )private KieSession kbase1ksession2ks22;

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6.0 Score Cards

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Score Cards

a) Setup Parametersb) Characteristic Section

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Score Cards77

•UI Generates PMML•DRL Generated from PMML •DRL results in•Calculated Score•Ranked Reason Codes

•Can import PMML 4.1•but not exposed yet

•Calculated Scores•Currently Summations•Weight coming

•Not in PMML standard

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6.0 JTMS

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Justification-based Truth Maintenace JTMS

Drools 5.x•Simple logical insertion TMS, like Clips, Jess and others.

•Drools 6.0•Contradiction handling with JTMS•Clean separation of exception logic

•TMS now has pluggable Belief System•Simple TMS support•JTMS now possible.•Defeasible Logic soon

•See drools-compiler•JTMSTest for lots of example tests•https://github.com/droolsjbpm/drools/blob/master/drools-compiler/

src/test/java/org/drools/compiler/beliefsystem/jtms/JTMSTest.java

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https://github.com/droolsjbpm/drools/blob/master/drools-compiler/src/test/java/org/drools/compiler/beliefsystem/jtms/JTMSTest.java






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JTMS

rule "Issue Child Bus Pass"when $p : Person( age < 16 )then insert(new ChildBusPass( $p ) );endrule "Issue Adult Bus Pass"when $p : Person( age >= 16 )then insert(new AdultBusPass( $p ) );end

Couples the logic

What happens when the Child stops being 16?

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JTMS

•Bad•Monolithic•Leaky•Brittle integrity - manual maintenance

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JTMS

•A rule “logically” inserts an object

•When the rule is no longer true, the object is retracted.rule "IsChild"when $p : Person( age < 16 )then logicalInsert( new IsChild( $p ) )endrule "IsAdult"when $p : Person( age >= 16 )then logicalInsert( new IsAdult( $p ) )end

de-couples the logic

Maintains the truth by automatically retracting

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JTMS

rule "Issue Child Bus Pass"when $p : Person( ) IsChild( person =$p )then logicalInsert(new ChildBusPass( $p ) );endrule "Issue Adult Bus Pass"when $p : Person() IsAdult( person =$p )then logicalInsert(new AdultBusPass( $p ) );end

The truth maintenance cascades

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JTMS

rule "Issue Child Bus Pass"when $p : Person( ) not( ChildBusPass( person == $p ) )then requestChildBusPass( $p );end The truth maintenance cascades

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JTMS

• Good

• De-couple knowledge responsibilities

• Encapsulate knowledge

• Provide semantic abstractions for those encapsulation

• Integrity robustness – truth maintenance

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JTMS86

IsChild

ChildBusPas

Rule : isChildRule

Rule : IssueBusPas

+

+

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JTMS87

rule "Do not issue to banned people"when $p : Person( ) Banned( person =$p )then logicalInsert(new ChildBusPass( $p ) , “neg” );end

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JTMS88

IsChild

ChildBusPas

Rule : isChildRule

Rule : IssueBusPas

+

+

Rule : Do Not Issue to Banned People

-

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R.I.P RETE

inspirations:•Leaps, Collection Oriented Match, L/R Unlinking

New Innovations•Full Rule, and Rule Segment Unlinking•Lazy Evaluation, with Rule scoping•Set propagations

Previous Innovations•Modify In Place•Property Reactive•Tree Based Graphs•Subnetwork support

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6.0 Legacy and Backwards Compatability

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Legacy Systems and Migration

Legacy API Adapter JAR•Most API’s should work with legacy adapter•KnowledegAgents have not been ported, PKG’s are not longer

the unit of deployment

JCR Migration Tool•Command Line Java code•Each Package maps to a GIT project

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Backward Chaining

Re-introducing an Advanced Feature

Detailed Tutorial here:https://www.youtube.com/watch?v=fCjIRVSRFvA

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https://www.youtube.com/watch?v=fCjIRVSRFvA

https://www.youtube.com/watch?v=fCjIRVSRFvA

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Backward Chaining

query isChild( Person p ) $p := Person( age <= 16 )end

rule "Issue Child Bus Pass"when $p : Person( ) isChild( $p; )then logicalInsert(new ChildBusPass( $p ) );end

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Reasoning with GraphsHouse

Location("Office", "House ")

Location("Kitchen", "House")

Location("Desk", "Office")

Location("Chair", "Office")

Location("Computer", "Desk")

Location("Draw", "Desk")

Location("Knife", "Kitchen")

Location("Cheese", "Kitchen")

Location("Key", "Draw")

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Backward Chaining

query isContainedIn( String x, String y ) Location( x, y; ) or ( Location( z, y; ) and isContainedIn( x, z; ) )end

House










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Backward Chaining96

ksession.insert( new Location("Office", "House") );ksession.insert( new Location("Kitchen", "House") );ksession.insert( new Location("Knife", "Kitchen") );ksession.insert( new Location("Cheese", "Kitchen") );ksession.insert( new Location("Desk", "Office") );ksession.insert( new Location("Chair", "Office") );ksession.insert( new Location("Computer", "Desk") );ksession.insert( new Location("Draw", "Desk") );

House










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Backward Chaining97

rule "go1"when String( this == "go1" ) isContainedIn("Office", "House"; )then System.out.println( "office is in the house" );end

rule "go" salience 10when $s : String( )then System.out.println( $s );end

ksession.insert( "go1" );ksession.fireAllRules();---go1office is in the house


Does not recurse.Finds Location(“Office, House”) on first call.

House










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Backward Chaining98

rule "go2"when String( this == "go2" ) isContainedIn("Draw", "House"; )then System.out.println( "Draw in the House" );end

ksession.insert( "go2" );ksession.fireAllRules();---go2Desk in the House


Recursive 3 times, note the Z.Location( “Office”, “House”)Location( “Desk”, “Office”)Location( “Draw”, “Desk”)

Out Var (unbound) In Var

(bound)

House










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Backward Chaining99

rule "go3"when String( this == "go3" ) isContainedIn("Key", "Office"; )then System.out.println( "Key in the Office" );end

ksession.insert( "go3" );ksession.fireAllRules();---go3

ksession.insert( new Location("Key", "Draw") );ksession.fireAllRules();---Key in the Office

Nothing returned.There is no key at any point below Office. But the query stays open and reactive.

Key Inserted 3 levels below, but system detects, reacts and bubbles up the results.

House










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Backward Chaining100

rule "go4"when String( this == "go4" ) isContainedIn(thing, "Office"; )then System.out.println( "thing " + thing + " is in the Office" );end

ksession.insert( "go4" );ksession.fireAllRules();---go4thing Key is in the Officething Computer is in the Officething Draw is in the Officething Desk is in the Officething Chair is in the Office

Finds all Things in the office, but directly and transitively.

Out Var (unbound)

House










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Backward Chaining101

rule "go5"when String( this == "go5" ) isContainedIn(thing, location; )then System.out.println( "thing " + thing + " is in " + location );end

ksession.insert( "go5" );ksession.fireAllRules();---go5thing Knife is in Housething Cheese is in Housething Key is in Housething Computer is in Housething Draw is in Housething Desk is in Housething Chair is in Housething Key is in Officething Computer is in Officething Draw is in Officething Key is in Deskthing Office is in House

Find all things in all things.

Out Var (unbound) Out Var

(unbound)

thing Computer is in Deskthing Knife is in Kitchenthing Cheese is in Kitchenthing Kitchen is in Housething Key is in Drawthing Draw is in Deskthing Desk is in Officething Chair is in Office

House










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102

UF UberFirehttps://www.youtube.com/watch?v=ckAznbOOV-4

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103

Features• Compile time composition of plugins

• modular components, each separate maven module.• Lightweight• Decoupled components• Layout Manager and Perspectives• Embeddable/Reusable (*)• Unified API

• Security• I/O

• VFS• Metadata• Menus, Toolbars, Panels, etc.

• Standard Life Cycle

UF UberFire

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UberFire104

@Dependent@WorkbenchScreen(identifier = "MyFirstPanel")public class MyFirstPanel {

private final FlowPanel panel = new FlowPanel();

@PostConstruct private void init() { final Label label = new Label();

label.setText("Hello World!");

panel.add(label); }

@WorkbenchPartTitle public String myTitle() { return "My First and Cool Panel!"; }

@WorkbenchPartView public IsWidget getView() { return panel; }

}

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Proof is in the Pudding

•UI Rewrite started in November•Entire BRMS ported•New BPMS built, all integrated•Tasks, Calendars, BPM Designer•Only one person on core UI framework•All team memebers distributed•Despite aggressive schedule•Code remains modular•Easy to maintan and extend•No one is complaining yet :)

105

UF UberFire

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106Questions?Questions?

• Dave Bowman: All right, HAL; I'll go in through the emergency airlock.

• HAL: Without your space helmet, Dave, you're going to find that rather difficult.

• Dave Bowman: HAL, I won't argue with you anymore! Open the doors!

• HAL: Dave, this conversation can serve no purpose anymore. Goodbye.

Joshya: Greetings, Professor Falken.Falken: Hello, Joshua.Joshya: A strange game. The only winning move is not to play. How about a nice game of chess?

Monday, 5 August 13

What's new in Drools 6 - London JBUG 2013

Technology

Transcript of What's new in Drools 6 - London JBUG 2013