nuxeo javaone 2007 presentation (in original format)
DESCRIPTION
This session describes the architecture and implementation of an embeddable, extensible enterprise content management core for Java EE and simpler platforms. The presentation starts by describing the general architectural concepts used as building blocks: • A schema and document model, reusing XML schemas and making good use of XML namespaces, where document types are built with several facets • A repository model, using hierarchy and versioning, with the Content Repository API for Java (JSR 170) being one of the possible back ends • A query model, based on the Java Persistence query language (JSR 220) and reusing the path-based concepts from Java Content Repositories (JCR) • A fine-grained security model, compatible with WebDAV concepts and designed to provide flexible security policies • An event model using synchronous and asynchronous events, allowing bridging through Java Message Service (JMS) or other systems to other event-enabled frameworks • A directory model, representing access to external data sources using the same concepts as for documents but taking advantage of the specificities of the data back ends Suitable abstraction layers are put in place to provide the required level of flexibility. One of the main architectural tasks is to find commonalities in all the systems used (or whose use is planned in the future) so framework users need to learn and use a minimal number of concepts. The result is a set of concepts that are fundamental to enterprise document management and are usable through direct Java technology-based APIs, Java EE APIs, or SOA. The presentation shows, for each of the main components, which challenges have been met and overcome when building a framework in which all components are designed to be improved and replaced by different implementations without sacrificing backward compatibility with existing ones. The described implementation, Nuxeo Core, can be embedded in a basic Java technology-based framework based on OSGi (such as Eclipse) or in one based on Java EE, according to the needs of the application using it. This means that the core has to function without relying on Java EE services but also has to take advantage of them when they are available (providing clustering, messaging, caching, remoting, and advanced deployment).TRANSCRIPT
2007 JavaOneSM Conference | Session TS-4532 |
TS-4532
Building an Embeddable Enterprise Content Management Core With the Latest Java™
TechnologiesFlorent Guillaume Arnaud LefevreChief Scientist VP of SalesNuxeowww.nuxeo.com
2007 JavaOneSM Conference | Session TS-4532 | 2
Goal of This Session
Learn about the design and use of Nuxeo™ 5, an embeddable, extensible Enterprise Content Management framework for Java™ Platform, Enterprise Edition (Java™ EE platform) and other platforms.
Learn how a Content Management core is built
2007 JavaOneSM Conference | Session TS-4532 | 3
AgendaWhat Is Enterprise Content ManagementWhat Do We Want to AchieveCore FrameworkCore and High-Level ServicesUI LayersExtensible and PluggableUsing the Framework
2007 JavaOneSM Conference | Session TS-4532 | 4
AgendaWhat Is Enterprise Content ManagementWhat Do We Want to AchieveCore FrameworkCore and High-Level ServicesUI LayersExtensible and PluggableUsing the Framework
2007 JavaOneSM Conference | Session TS-4532 | 5
What IsEnterprise Content Management?● Manufacturing● Supply Chain● HR● Accounting● Activity Management● Shipping
ERPUnification
1990–2000…
2007 JavaOneSM Conference | Session TS-4532 | 6
What IsEnterprise Content Management?2000–20...● Documents (Records, E-Mail, Media)● Acquisition● Search Engine● Archiving● Collaboration● Web Publishing● Access Control● Compliance
ECMUnification
2007 JavaOneSM Conference | Session TS-4532 | 7
What IsEnterprise Content Management?The technologies used to:
● Capture● Create● Manage● Store● Preserve● Reuse● Deliver
content within the enterprise
2007 JavaOneSM Conference | Session TS-4532 | 8
AgendaWhat Is Enterprise Content ManagementWhat Do We Want to AchieveCore FrameworkCore and High-Level ServicesUI LayersExtensible and PluggableUsing the Framework
2007 JavaOneSM Conference | Session TS-4532 | 9
What Do We Want to Achieve?● Create a Framework● Make It Extensible● Make It Multi-Platform● Use the Latest Technologies● Open Source
2007 JavaOneSM Conference | Session TS-4532 | 10
What Do We Want to Achieve?● Create a Framework
● Set of Services● Software Bundles
● Set of APIs● Open to other systems
● Configuration● XML rather than code
2007 JavaOneSM Conference | Session TS-4532 | 11
What Do We Want to Achieve?● Create a Framework● Make It Extensible
● New services● New backends to existing services
2007 JavaOneSM Conference | Session TS-4532 | 12
What Do We Want to Achieve?● Create a Framework● Make It Extensible● Make It Multi-Platform
● POJOs● Java EE platform
● Clusterable, distributable● Eclipse
● Rich Client Platform (RCP)● Mix of those
● RCP client, Java EE platform server
2007 JavaOneSM Conference | Session TS-4532 | 13
What Do We Want to Achieve?● Create a Framework● Make It Extensible● Make It Multi-Platform● Use the Latest Technologies
● Java platform v.5, Java EE 5● OSGi● JCR (JSR-170, JSR-283), W3C XML Schemas● JavaServer Faces™ technology, Facelets● BPEL, WfMC● SOAP, WSDL
JSR = Java Specification Request
2007 JavaOneSM Conference | Session TS-4532 | 14
What Do We Want to Achieve?● Create a Framework● Make It Extensible● Make It Multi-Platform● Use the Latest Technologies● Open Source
● LGPL, EPL● http://www.nuxeo.org
2007 JavaOneSM Conference | Session TS-4532 | 15
AgendaWhat Is Enterprise Content ManagementWhat Do We Want to AchieveCore FrameworkCore and High-Level ServicesUI LayersExtensible and PluggableUsing the Framework
2007 JavaOneSM Conference | Session TS-4532 | 16
The basicsCore Framework● Schemas● Document Types● Life Cycle● Repository● Security
2007 JavaOneSM Conference | Session TS-4532 | 17
Core Framework● Schemas
● Structure the documents● XML Schemas● Complex Types● Attached Files
2007 JavaOneSM Conference | Session TS-4532 | 18
Core Framework: Schema DublinCore<xs:schema>
<xs:element name="title" type="xs:string"/><xs:element name="description" type="xs:string"/><xs:element name="rights" type="xs:string"/><xs:element name="created" type="xs:date"/><xs:element name="modified" type="xs:date"/><xs:element name="issued" type="xs:date"/><xs:element name="format" type="xs:string"/><xs:element name="language" type="xs:string"/>...
</xs:schema>
2007 JavaOneSM Conference | Session TS-4532 | 19
Core Framework: Schema Baddies<xs:schema><xs:complexType name="baddie"><xs:sequence><xs:element name="surname" type="xs:string"/><xs:element name="level" type="xs:positiveInteger"/><xs:element name="birth" type="xs:date"/>
</xs:sequence></xs:complexType><xs:complexType name="baddies"><xs:sequence><xs:element name="baddie" type="baddie"
minOccurs="0" maxOccurs="unbounded"/></xs:sequence>
</xs:complexType><xs:element name="baddies" type="baddies"/>
</xs:schema>
2007 JavaOneSM Conference | Session TS-4532 | 20
Core Framework: XML Equivalent<baddies>
<baddie><surname>Sylar</surname><level>38</level><birth>1962-06-11</birth>
</baddie></baddies>
2007 JavaOneSM Conference | Session TS-4532 | 21
Core Framework● Schemas● Document Types
● High-level name● Aggregate schemas● Facets
2007 JavaOneSM Conference | Session TS-4532 | 22
Core Framework: Document Type<doctype name="Note" extends="Document">
<schema name="dublincore"/><schema name="note"/>
<facet name="Commentable"/><facet name="Versionable"/><facet name="Publishable"/>
</doctype>
2007 JavaOneSM Conference | Session TS-4532 | 23
Core Framework● Schemas● Document Types● Life Cycle
● States● Transitions
2007 JavaOneSM Conference | Session TS-4532 | 24
Core Framework: Life Cycle States<lifecycle name="default" initial="project">
<states><state name="project">
<transitions><transition>approve</transition>
</transitions></state><state name="approved">
<transitions><transition>obsolete</transition>
</transitions></state><state name="obsolete"/>
</states>...
2007 JavaOneSM Conference | Session TS-4532 | 25
Core Framework: Life Cycle Transitions<lifecycle name="default" initial="project">
...<transitions>
<transition name="approve" destination="approved"><description>Approve the document</description>
</transition><transition name="obsolete"
destination="obsolete"><description>Obsolete the document</description>
</transition></transitions>
</lifecycle>
2007 JavaOneSM Conference | Session TS-4532 | 26
Core Framework● Schemas● Document Types● Life Cycle● Repository
● Hierarchical● Versioning● Backend● API
2007 JavaOneSM Conference | Session TS-4532 | 27
Core Framework: Repository● Hierarchical
● Servers, Domains● Tree of documents
● Versioning● Save, View, Restore● Policy
● Backend● JCR, SQL
● API● Nuxeo 5, JCR 2 (JSR 283)
2007 JavaOneSM Conference | Session TS-4532 | 28
Core Framework● Schemas● Document Types● Life Cycle● Repository● Security
● Users, Groups● Permissions● ACLs
2007 JavaOneSM Conference | Session TS-4532 | 29
Core Framework: Security ACLs● Basic Access Control Entry (ACE)
● DENY Read to Anonymous● GRANT Write to group:Developers
● Ordered List● Manipulated by different services
● User assignment● Workflow● Record management locks
● Placeful and Inherited
2007 JavaOneSM Conference | Session TS-4532 | 30
AgendaWhat Is Enterprise Content ManagementWhat Do We Want to AchieveCore FrameworkCore and High-Level ServicesUI LayersExtensible and PluggableUsing the Framework
2007 JavaOneSM Conference | Session TS-4532 | 31
Fundamental ServicesCore Services● Event System● Directories● User Manager● Query
2007 JavaOneSM Conference | Session TS-4532 | 32
Core Services● Event System
● Synchronous Listeners● Low Level
● Creation, Modification, Deletion● Move, Copy● Security Changes
● Bridged to Java Message Service (JMS)● Asynchronous Handlers● Non-Core components can participate
2007 JavaOneSM Conference | Session TS-4532 | 33
Core Services● Event System● Directories
● Tabular Data● Users and Groups● Vocabularies● Entries are placeless documents
2007 JavaOneSM Conference | Session TS-4532 | 34
Core Services: Directory<directory name="country">
<schema>vocabulary</schema><dataSource>java:/nxsqldirectory</dataSource><table>country</table><idField>id</idField><sqlScript>country.sql</sqlScript>
</directory>
<xs:schema><xs:element name="id" type="xs:string"/><xs:element name="label" type="xs:string"/><xs:element name="obsolete" type="xs:boolean"/>
</xs:schema>
2007 JavaOneSM Conference | Session TS-4532 | 35
Core Services● Event System● Directories● User Manager
● Bridge directories and user authentication● Interfaces with the application server● Global defaults
2007 JavaOneSM Conference | Session TS-4532 | 36
Core Services● Event System● Directories● User Manager● Query
● Multiple Backends● Intelligent Dispatcher● Query Language: NXQL
2007 JavaOneSM Conference | Session TS-4532 | 37
Core Services: QuerySELECT * FROM Documents WHERE
dc:title LIKE 'JavaOne%'
SELECT * FROM Documents WHEREdc:modified >= TIMESTAMP '2007-01-01T00:00:00'
SELECT * FROM Documents WHEREecm:path STARTSWITH '/customers/proposals'
2007 JavaOneSM Conference | Session TS-4532 | 38
Advanced functionalityHigh-Level Services● Audit and Logging● Comments● Transformations● Relations● Workflow● Action Manager● Mime Types● Scheduler
2007 JavaOneSM Conference | Session TS-4532 | 39
Layered Framework: Functional View
Nuxeo Core ServicesStorage
High-Level Services
Schemas Versions Security ...
Transform Audit Relation Indexing ...
Jackrabbit
CompassJenaOOo JDBC™
Nuxeo R
untime
Web App RCP App Flex App
JDBC™ = Java DataBase Connectivity
2007 JavaOneSM Conference | Session TS-4532 | 40
Layered Framework: Workflow
org.nuxeo.ecm.platform.workflow.apiorg.nuxeo.ecm.platform.workflow.clientorg.nuxeo.ecm.platform.workflow.coreorg.nuxeo.ecm.platform.workflow.documentorg.nuxeo.ecm.platform.workflow.document-apiorg.nuxeo.ecm.platform.workflow.document-facadeorg.nuxeo.ecm.platform.workflow.facadeorg.nuxeo.ecm.platform.workflow.jbpm
2007 JavaOneSM Conference | Session TS-4532 | 41
Layered Framework: Workflow
WF Doc API
Doc Core
Workflow APIWF
Core
jBPM
EJB™
WF Facade
Seam WF Client
Doc Facade
Nuxeo Core API
Nuxeo Core
EJB™ = Enterprise JavaBeans™
2007 JavaOneSM Conference | Session TS-4532 | 42
DEMO
2007 JavaOneSM Conference | Session TS-4532 | 43
AgendaWhat Is Enterprise Content ManagementWhat Do We Want to AchieveCore FrameworkCore and High-Level ServicesUI LayersExtensible and PluggableUsing the Framework
2007 JavaOneSM Conference | Session TS-4532 | 44
How the user interacts with the systemUI Layers● Web
● JavaServer Faces technology, Ajax4jsf, Facelets● EJB specification Action Listeners● JBoss Seam● Theming Engine: NXThemes
● Eclipse RCP
2007 JavaOneSM Conference | Session TS-4532 | 45
Nuxeo 5 Screenshot
2007 JavaOneSM Conference | Session TS-4532 | 46
Eclipse Screenshot
2007 JavaOneSM Conference | Session TS-4532 | 47
AgendaWhat Is Enterprise Content ManagementWhat Do We Want to AchieveCore FrameworkCore and High-Level ServicesUI LayersExtensible and PluggableUsing the Framework
2007 JavaOneSM Conference | Session TS-4532 | 48
NXRuntime:Extension Points
Nuxeo Core
Comment Service
Type Service
Storage Service
Blog Module
Blog Extensions
Storage Module
Jackrabbit Storage
2007 JavaOneSM Conference | Session TS-4532 | 49
NXRuntime:Extension Points<component name="core.TypeService" version="1.0">
<implementationclass="org.nuxeo.ecm.core.schema.TypeService"/>
<extension-point name="schema"><object
class="org.nuxeo.ecm.core.schema.SchemaBinding-Descriptor"/>
</extension-point>
<extension-point name="doctype"><object class="org.nuxeo.ecm.core.schema.DocumentType-
Descriptor"/></extension-point>
</component>
2007 JavaOneSM Conference | Session TS-4532 | 50
NXRuntime:Extension Point Contributions<component name="MyTypes" version="1.0">
<extension target="core.TypeService" point="schema"><schema name="common" src="common.xsd"/><schema name="dublincore" src="dublincore.xsd"
prefix="dc"/></extension>
<extension target="core.TypeService" point="doctype"><doctype name="Note" extends="Document"><schema name="common"/>...
</doctype></extension>
</component>
2007 JavaOneSM Conference | Session TS-4532 | 51
Services Are Pluggable● Internal Service Provider Interfaces (SPI)● Repository Backend● Directory Backend● Workflow Service● Indexing Service● Relation Service● Transformation Service
One implementation isn’t always sufficient
2007 JavaOneSM Conference | Session TS-4532 | 52
Run anywherePlug Into Different Platforms● POJO Bundles
● OSGi Dependencies● Extension Points ● Generic Lookup Service● Java EE platform Deployment
● JBoss● GlassFish
2007 JavaOneSM Conference | Session TS-4532 | 53
Plug Into Java EE Platform: Problems● Modules hard to reuse on other platforms● XML module descriptors don’t allow
fragmentation● Hardcoded package names in code or XML● Cannot add functionality without redeploying
the entire application● No extension model (plugins)
2007 JavaOneSM Conference | Session TS-4532 | 54
Plug Into Java EE Platform: Deployment● Deployment
● Ordering● Dynamic Activation● Contributed XML descriptors
● EAR: application.xml, jboss-app.xml● WAR: web.xml, faces-config.xml, pages.xml● Other: persistence.xml, datasources
● L10n properties files● Services as MBeans● Lookup Service
2007 JavaOneSM Conference | Session TS-4532 | 55
Plug Into OSGi● OSGi as Basic Format
● Java Archive (JAR)● Meta-Information
● NXRuntime● Extension points
● Definition● Contributions
● Specialized Deployment
2007 JavaOneSM Conference | Session TS-4532 | 56
AgendaWhat Is Enterprise Content ManagementWhat Do We Want to AchieveCore FrameworkCore and High-Level ServicesUI LayersExtensible and PluggableUsing the Framework
2007 JavaOneSM Conference | Session TS-4532 | 57
Using the Framework● Contribute to Extension Points
● Schemas, Documents● Actions● Event Listeners● Directories
● XHTML UI● JavaServer Faces technology
● EJB specification Action Listeners● Seam
● Deployment Rules
How to build an application with it
2007 JavaOneSM Conference | Session TS-4532 | 58
Using the Framework:JavaServer Faces Technology<h:outputText value="#{messages['label.edit']}" class=”top”/><h:form><h:panelGrid columns="3" styleClass="dataInput"
columnClasses="labelColumn,fieldColumn">
<h:outputText value="#{messages['label.title']}"/><h:inputText
value="#{currentDocument.dublincore.title}"class="dataInputText" id="title" required="true">
<f:validateLength minimum="5"/></h:inputText><h:message styleClass="errorMessage" for="title"/>
<h:outputText value=""/><h:commandButton value="#{messages['label.save']}"
styleClass="button" type="submit"action="#{documentActions.updateCurrentDocument}"/>
</h:form>
2007 JavaOneSM Conference | Session TS-4532 | 59
Using the Framework:Action Listener@Stateless@Name("myActions")public class MyActionsBean implements MyActions {
@In(required = true)protected Document currentDocument;
public String doSubmit() throws ClientException {String title =
currentDocument.getProperty("dc:title");title += " (Captured)";currentDocument.setProperty("dc:title", title);currentDocument.save();return null;
}}
2007 JavaOneSM Conference | Session TS-4532 | 60
Summary● Modular Framework● Flexible Backends● Platform Independent● Easy Extensions● Open Source● We Welcome Your Ideas and Contributions!
2007 JavaOneSM Conference | Session TS-4532 | 61
For More Information
http://www.nuxeo.org/
http://svn.nuxeo.org/
http://lists.nuxeo.com/mailman/listinfo/ecm
2007 JavaOneSM Conference | Session TS-4532 | 62
Q&AFlorent GuillaumeChief Scientist
Arnaud LefevreVP of Sales
2007 JavaOneSM Conference | Session TS-4532 |
TS-4532
Building an Embeddable Enterprise Content Management Core With the Latest Java™
TechnologiesFlorent Guillaume Arnaud LefevreChief Scientist VP of SalesNuxeowww.nuxeo.com