Download - Javapolis 2007: AJAX meets JCR
Kickstarting the Java Content Repository
AJAX meets JCR
www.javapolis.com
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Speaker’s Qualifications
David Nuescheler Chief Technology [email protected]
David NueschelerJackrabbit Committer / [email protected]
David NueschelerJSR-170 Spec [email protected]
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Overall Presentation Goal
Learn howJCR and Ajax allow for very agile
application development.
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Kickstarting JCRAJAX meets JCR
What’s JCR (elevator pitch)
Introducing jax
Weblog in 15 minutessilver
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Kickstarting JCRAJAX meets JCR
What’s JCR (elevator pitch)
Introducing jax
Weblog in 15 minutessilver
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What’s JCR?
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What’s JCR?
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What’s JCR?
“The API should be a standard, implementation independent, way to access content bi-directionally on a granular level to a content repository.” ?
Best of both worlds.data base filesystem
content repository
read
write
hier-archiesstreams
locking accesscontrol
integrity structure
tx query
un-structured“full-text” sort
orderversion
ingobser-vation
multi-value
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- Reality Check -
Task: Write a JSP snippet that lists “documents” in a “folder”.”
What’s JCR?
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- Reality Check -
Task: Write a JSP snippet that lists “documents” in a “folder”.”
What’s JCR?<%childCount = node.getContentCount();for(int i=0;i<childCount;i++) { IContent child = node.getContent(i); Property title = child.getPropertyByName("Title"); %><%= title.getValue() %><br/><%}%>
<%LAPI_DOCUMENTS documents
= new LAPI_DOCUMENTS(session);
LLValue childTable = new LLValue();
documents.ListObjects(volumeID, folderID,
null, null, LAPI_DOCUMENTS.PERM_SEE, chi
ldTable);
Enumeration children = childTable.enumerateValue
s();
while(children.hasMoreElements()) {
LLValue child = (LLValue)e.nextElement()
;
String title = child.toString("Name");
%><%= title %><br/><%
}%>
<%fndocs = new IFnObjSetDualProxy( fnfolder.getContents(idmFolderContent.idmFolderContentDocument));
int numDocs = fndocs.getCount();for (int i = 1; i <= numDocs; i++) {
IFnDocumentDual fndoc = new IFnDocumentDualProxy(fndocs.getItem(new Integer(i)));
IFnPropertiesDual propset = fndoc.getProperties();
IFnPropertyDual idmTitleProp = propset.getItem("Title");
String title = idmTitleProp.getValue();
%><%= title %><br/><% if (comCleanup) { cleaner.release(fndoc); }}%>
<%IDocuments documents =
new IDocumentsProxy(binder.getDocuments());
documents.cache();
int documentCount = documents.getCount();
for (int i = 0; i<documentCount; i++) {
document = new IDocumentProxy(docume
nts.getItemByIndex(i));
String title = document.getTitle()
%><%= title %><br/><%
}%>
<%PageIterator children = page.getPages();while (children.hasNext()) { Page child = children.nextPage(); Container toplevel = child.getContent(); Atom title = toplevel.getAtom("Title"); %><%= title %><br /><%}%>
+800
<<<<%NodeIterator children = node.getNodes();while (children.hasNext()) { Node child = children.nextNode(); Property title = child.getProperty("Title"); %><%= title %><br /><%}%>
JCR API
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- Functional Elevator Pitch -What’s JCR?
level 1
level 2
read, export, query
write, import, accesscontrol
sql locking obser-vation tx versioning
optional
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JSR-283 Public Review Ballot
approved
final release:
expected m
id
2008
Java Standardization
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Java Standardization
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Known compliant Repositories
Apache Jackrabbit Oracle XML DBExo
ECMS PlatformMicrosoft
Sharepoint OpenText Livelink
Day CRX IBM FileNet P8 Xythos Repository Alfresco ECM Vignette V7
Interwoven Repository IBM CM EMC Documentum
How many
RDBMS vendors
do you need?+hundreds of TCKsregistered
* *
*
*
* using third party connector
*
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Sourcemix Sourcemix
Percussion Rhythmix Lutece
Portal
QuickWCM WCMS
Jahia Framework
Hippo CMS
InfoQ Online CommunityNuxeo ECM
Sakai E-learning
TYPO3 v5.0 WCMGX WebManager
Exo ECMS Platform
Liferay Enterprise Portal
Artifactory Maven Proxy
IBM FileNet WebSiteManagerApache James
medic-2-medic mapofmedicine
Day Communiqué WCMS
Apache Tapestry
Day Communique Collab
QSLabs ComplianceApache
Cocoon
Alfresco ECMSApache Sling
Mindquarry Collaboration
Day Communique DAMmagnolia WCMS
JBoss Portal
Some known JCR Applications
Sun OpenPortal Interface 21
Spring Framework
Fast Enterprise SearchOracle PortalBEA Portal
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JCR - Weatherforcast-5°
2008 2009-8°
2010-12°
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Kickstarting JCRAJAX meets JCR
What’s JCR (elevator pitch)
Introducing jax
Weblog in 15 minutessilver
www.javapolis.com
Kickstarting JCRAJAX meets JCR
What’s JCR (elevator pitch)
Introducing jax
Weblog in 15 minutessilver
www.javapolis.com
Introducing jax
Apache Sling
microsling
microjax jax
JCR backed ReST-devkit(OSGI, OCM , ...)subtract osgisubtract ocm
contains
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JCR
functionally broad
well designedlong term
strategicheavy duty16 tons
stable & durable
Introducing jax
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JCR
me
short-sighted...easily confused
developer hat
hacklazy
“i want to build webapps” the o
ther
side
functionally broad
well designedlong term
strategicheavy duty16 tons
stable & durable
Introducing jax
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JCR
me (david)
developer hat
very simple projection: fits the bill
µjax
silver
Introducing jax
I2
3
Browser
J2EE WebServer
browser & ujax.jsreading: json & resource GET’swriting: form-POSTs & GETs
MicrojaxServlet.javatranslating requests to JCR calls
JCR CompliantContent Repository
I
2
3very simple js API to read content, Forms to write content
handles all the heavy lifting, particularly security16 tons
Introducing jax
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Introducing jax
“Data First!”JCR supports “structure first” aswell. (but that’s missing point)
DEMO
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Getting ready...
download and installtest & mount as a drive
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hello, world.
drag, drop, donehttp://localhost:7402/apps/firststeps/0_hello.html
<html>
<head><title>u
jax:hello, wor
ld</title>
</head>
<body><h2>hell
o, world</h2>
</body>
</html>
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simple write example
write me!http://localhost:7402/apps/firs
tsteps/1_write.html
<html>
<head><title>u
jax: simple wr
ite example</t
itle>
</head><body>
<form action="
/content/first
steps" method=
"POST">
<!-- title -->
<h2>Title</h2>
<input type="t
ext" name="Tit
le" />
<!-- descripti
on -->
<h2>Descriptio
n</h2>
<textarea rows
="5" name="Des
cription">
</te
xtarea>
<!-- color -->
<h2>Color</h2>
<select name="
Color">
<option value=
"red">red
<option value=
"green">green
</select>
</form>
</body>
</html>
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simple read example
read me!http://localhost:7402/apps/firststeps/2_read.html
<html>
<head><title>u
jax: simple re
ad example</ti
tle>
</head>
<body>
<script src
="/ujax/ujax.j
s"></script
<script>
var node=uj
ax.getContent(
"/content/firs
tsteps");
var div='<d
iv style="back
ground-color:'
+node.Color+'"
>';
document.wr
ite(div);
</script>
<h2><script>
document.write
(node.Title);
</script></h2>
<p><script>
document.write
(node.Descript
ion);
</script></p>
</div>
</body>
</html>
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add newhttp://localhost:7402/apps/firststeps/3_addnew.html
add new entry
<html>
<head><title>u
jax: add new e
ntry example</
title>
</head><body>
<form action="
/content/first
steps/entries/
*"
method="PO
ST" >
<h2>Title</h2>
<input type="t
ext" name="Tit
le" />
<h2>Descriptio
n</h2>
<textarea rows
="5" name="Des
cription"></te
xtarea>
<h2>Color</h2>
<select name="
Color">
<option value=
"red">red
<option value=
"green">green
</select>
<p><input type
="submit"></p>
</form>
</body>
</html>
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list entries
list entrieshttp://localhost:7402/apps/firststeps/4_list.html
<html>
<head><title>u
jax: list entr
ies example</t
itle>
[...]
<script>
var entries=uj
ax.getContent(
"/content/firs
tsteps/entries
", 2);
</script>
<div>
<script>
for (var a i
n entries) {
var entry=ent
ries[a];
document.
write('<div st
yle="backgroun
d-color:'+entr
y.Color+'">');
document.
write('<h2>'+e
ntry.Title+'</
h3>');
document.
write(entry.De
scription);
if(entry.
Image) {
[...]
}
document.
write('</div>'
);
document.
write('<a href
="4_list.html"
onclick=
”ujax.removeCo
ntent(\'/mydat
a/entries/\'+a
+'\'">
remove</
a>');
}
</script>
<a href="3_add
new.html">add
new</a>
</div>
</body>
</html>
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resource oriented urlshttp://localhost:7402/content/firststeps.list.html
templates
[...]
<%= currentNod
e.Title %>
[...]
<script>
ujax.wizard();
</script>
[...]
! ! Rjax.wizard();
! </script>
www.javapolis.com
Kickstarting JCRAJAX meets JCR
What’s JCR (elevator pitch)
Introducing jax
Weblog in 15 minutessilver
www.javapolis.com
Kickstarting JCRAJAX meets JCR
What’s JCR (elevator pitch)
Introducing jax
Weblog in 15 minutessilver
www.javapolis.com
Weblog in 15 minutes- goals -
-seen before?...a bunch of forms & a datamodel.
-something (almost) useable
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Weblog in 15 minutes- goals -
Confession
I am not a Blogger.
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I am not a Blogger.
Weblog in 15 minutes- goals -
Confession
stefano mazzocchi’s
“linotype”
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Transform “Stefano’s Linotype” into a jax and JCR backed Blog.
Weblog in 15 minutes- goals -
»»NO TOOLS!
(well texteditor &
browser ;) )...but an audience full of buddy coders
DEMO
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If you remember only 2 thing.
dev.day.com Download CRX and play with ujax. keep an eye on “apache sling”2
I
seriously!
Q&AView JavaPolis talks @ www.parleys.com
Thank you for your attention