Extending Java From ColdFusion - CFUnited 2010

© 2010 Adobe Systems Incorporated. All Rights Reserved. Adobe Confidential.
Rupesh Kumar July 25th 2010
http://www.rupeshk.org/ : rukumar
Extending Java with ColdFusion

Agenda
 Objective
 Using Java from CFML
 Leveraging ColdFusion Features from Java
 Areas to watch out for
 ColdFusion as a Service (CFaaS)
 Q&A

ColdFusion is Java
3

ColdFusion is Java
 ColdFusion applications are developed in CFML (and likely take
advantage of Java, XML, SOAP, and more).
 At runtime ColdFusion applications are pure Java.
 A J2EE server (internal or external)
 … running a Java application (the ColdFusion engine)
 … invoking Java code (CFML code compiled to Java bytecode).
 CFML exists only at developer time, runtime is pure Java (and deployed
like any other Java application).
 CFML source need not be present at runtime.
 Applications may be packaged and deployed like any other Java
applications.
4

5
ColdFusion Leverages Underlying Java
Connectivity
Security
Management
Transactions
Directory
JEE Application
Server
Java App #1
ColdFusion
Java App #2

© 2010 Adobe Systems Incorporated. All Rights Reserved. Adobe Confidential. 6
JEE Services
Java Runtime
Presentation
(HTML, Reporting, PDF Generation, AJAX, Flash Forms)
Database
Connectivity
Document
Services
PDF/Excel/P
PT/
Word
Network
Services
(http, ftp, mail
–
smtp/pop/ima
p)
Enterprise
Services
(Exchange,
Sharepoint)
SOA
connectivity
(WebServices
FDS, Flash
Remoting)
Event
Gateways
(IM, JMS
SMS)
ColdFusion Runtime
CFML Compiler

ColdFusion is Java…
ColdFusion Type Java Type
String String
Number Double
Boolean Boolean
Array List/Vector
Struct Map
Date Date
Query coldfusion.sql.QueryTable
7

Why CF + Java?
 ColdFusion and Java complement each other
 ColdFusion  Java
 Take advantage of wide set of Java libraries available
 Extend ColdFusion features
 Functionalities that are not baked in ColdFusion could be available in Java
 J2SDK APIs
 There are tons of libraries shipped with ColdFusion – Apache POI, EhCache, Hibernate,
iText, webchart etc
 Other libraries -
 Java  ColdFusion
 Productivity
 Easy to learn.
 Rapid development.
 Huge number of Services available readymade.
 Leverages standards and existing IT and training investments.
8

ColdFusion Integrated Services
 Database connectivity
 Full text searching (Verity and Solr)
 Printing (PDF)
 Document Services (PDF, Excel,
Word, PPT)
 Reporting (PDF, FlashPaper, RTF,
Excel, HTML, XML)
 Graphing and Charting
 E-Mail (POP, IMAP and SMTP)
 Exchange
 XML manipulation
 Including XSL and XPath
 Imaging
 Sharepoint
 Flash Remoting
 Server-side HTTP and FTP
 LDAP client
 Windows NT/AD authentication
 Gateways
 Socket
 JMS
 Instant messaging (including XMPP)
 SMS
 Asynchronous processing
 S3 Storage Service
 RSS Feed
 Java, COM, .NET, CORBA client
 … and more

ColdFusion  Java
 Java CFX Tags
 JSP and Servlets
 JSP Tag Libraries
 Direct Invocation
10

Direct Invocation
 Object Creation
createObject(“java”, className)
<CFOBJECT type=“Java” class=“className” name=“variable”>
 Method invocation
 obj.foo(arg1, arg2,..)
 Constructors – use init
<cfobject type=”java” class=”java.lang.StringBuffer” name=”buff”>
<cfset buff.init(“CFUnited”)>
 Calling methods
<cfset buff.append(“2010”)>
 Static method
 no need to init() to call static method
integer = createObject(“Java”, “java.lang.Integer”);
intval = integer.parseInt(“10”);
11

Java Invocation – class loading ColdFusionJava
 ColdFusion’s java invocation needs class to be loaded by ColdFusion
classloader
 Classes need to be placed in a pre-defined directory
 CF Classloader will pick up from <cf_root>/lib folder
 Parent i.e web application classloader will pick up from <cf_root>/WEB-INF/lib
 One might not have permission to do this
 Classes cannot be changed at runtime.
 Server must be restarted to pick up the change
 They cannot be application specific
 You cannot have multiple versions of the same library in the server
12

JavaLoader ColdFusionJava
 Project by Mark Mandel :
 http://www.compoundtheory.com/?action=javaloader.index
 Dynamically loads java libraries using its own classloader
 Create JavaLoader object
 createObject("component","javaloader.JavaLoader").
init(loadPaths [,loadColdFusionClassPath]
[,parentClassLoader]);
 Loadpaths : Array of jars or class directories
 loadColdFusionClasspath : true|false whether ColdFusion classloader will be
the parent classloader
 parentClassLoader : the parent classloader object
 Create object
 javaloader.create(className).init(arg1, arg2...);
13

Java Invocation.. ColdFusionJava
 Watch out for
 Overloaded constructors and methods
 Resolve ambiguity using javacast – javacast(“datatype”, data)
 Java is case sensitive. Classname must be in the correct case
 For method invocation, it is better to use the correct case.
14

Demo
15

Java  ColdFusion
 CFCProxy
 TemplateProxy
 Dynamic Proxy
 WebServices (SOAP and REST)
 CFC methods over HTTP
 ColdFusion as a Service (CFaaS)
 Event Gateway
16

CFC Proxy
 Allows Java to directly invoke CFC methods
 CFCProxy
 new CFCProxy(“path to cfc");
 invoke(String method, Object[] args)
 Example
CFCProxy myCFC = new CFCProxy("C:test.cfc");
Object[] args = {"CFUnited"};
Object greeting = myCFC.invoke("greet", args);
 ColdFusion classloader should be the context classloader
 Works with cfc’s absolute path
17

TemplatePoxy
 Use this when invoked from CF request
 Works with cfc’s absolute path as well as cfc’s fully qualified name.
 Create using TemplateProxyFactory
 TemplateProxy proxy = TemplateProxyFactory.resolveFile(pageContext, file)
 TemplateProxy proxy = TemplateProxyFactory.resolveName(cfcName,
pageContext)
 Invoke
 invoke(String method, Object[] args, PageContext ctx)
18

Dynamic Proxy
 Part of JavaLoader 1.0
 Makes CFCs behave like Java classes or impl for Java interfaces
 Allows java objects to call cfc methods seamlessly
 Java Frameworks relying on certain contract can leverage CFC
 DynamicProxy = javaloader.create(
"com.compoundtheory.coldfusion.cfc.CFCDynamicProxy");
 DynamicProxy.createInstance(cfc, interfaces)
 DynamicProxy.createInstance(pathToCFC, interfaces)
19

CFC methods over HTTP
 A remote method can be invoked directly using http
Component
{
remote String function greet(arg)
{
return "Hello " & arg;
}
}
 Invoke using url
http://localhost:8500/cfunited/hello.cfc?method=greet&a
rg=cfunited
20

WebService
 CFC methods exposed as webservice
Component style="document" {
remote String function greet(arg){
return "Hello " & arg;
}
}
 Generate the Java proxies from wsdl
 Axis – Use WSDL2Java
 java org.apache.axis.wsdl.WSDL2Java –p cfunited.hello http://localhost:8500/Hello.cfc?wsdl
HelloServiceLocator locator = new HelloServiceLocator();
cfunited.axis.hello.Hello helloCfc = locator.getHelloCfc();
String msg = helloCfc.greet("CFUnited 2010");
 Java SE6 now natively supports webservices
 Wsimport
 wsimport http://localhost:8500/cfunited/hello.cfc?wsdl -d c:workcfunitedemoclasses -s
c:Workcfunitedemosrc -p cfunited.hello
HelloService helloService = new HelloService();
Hello helloCfc = helloService.getHelloCfc();
String msg = helloCfc.greet("CFUnited 2010");
21

ColdFusion as a Service
 CFChart
 CFDocument
 CFImage
 CFMail
 CFPop
 CFPdf
22

Setup for CFaaS
 Enable services in the admin
 Define IPs for access
 Admin>>security >> Allowed IP Address
 Define users who have permission
 Admin>> security >> User Manager >> add User >> Exposed Services
23

CFImage
• negative()
• rotate()
• blur()
• grayScale()
• scaletoFit()
• resize()
• overlay()
• flip()
• sharpen()
• shear()
• crop()
• addBorder()
• batchOperation()
 getEXIFTAG()
 getHeight()
 getWidth()
 info()
 getIPTCTag()
 getIPTCMetadata()
 getEXIFMetaData()
http://localhost:8500/CFIDE/services/image.cfc?wsdl

CFPDF
 protect()
 thumbnail()
 processDDX()
 extractText()
 extractImage()
 setinfo()
 mergeFiles()
 addwatermark()
 extractPages()
 getinfo()
 mergespecificpages()
 deletepages()
 removewatermark()
http://localhost:8500/CFIDE/services/pdf.cfc?wsdl

Other Services
 CFChart
 http://localhost:8500/cfide/services/cfchart.cfc?wsdl
 generate()
 CFDocument
 http://localhost:8500/cfide/services/document.cfc?wsdl
 Generate()
 CFMail
 http://localhost:8500/cfide/services/mail.cfc?wsdl
 Send()
 CFPOP
 http://localhost:8500/cfide/services/pop.cfc?wsdl
 delete()
 getAll()
 getHeaderOnly()
26

Summary
27

Q & A
Q & A
rukumar@adobe.com
http://www.rupeshk.org
rukumar

Extending Java From ColdFusion - CFUnited 2010

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