Tapestry JumpStart: Orientation

Orientation

This page describes the structure of JumpStart 4.0.n to 4.3.n.

Web source is in these locations:

	web

	|---src

	    |---main

	        |---java

	            |---jumpstart

	                |---web

	                    |---components   --> .java, .tml, .properties for components eg. Layout.java, Layout.tml

	                    |---pages        --> .java, .tml, .properties for pages eg. UserSearch.java, UserSearch.tml

	                    |---services     --> .java for services eg. AppModule.java and BusinessServicesLocator.java

                            |---WEB-INF      --> app.properties file for web application-wide messages

Business source is in these locations:

	business

	|---src

	    |---main

	        |---java                     --> messageDefs.properties file for business messages

	            |---jumpstart

	                |---business

	                    |---domain       --> .java for business domain (services and entities eg. SecurityFinderService and User)

	        |---resources                --> .xml for persistence and datasource descriptors

Eclipse compiles the java source to bin/ and runs our Ant file exploder.xml file to copy all the necessary items to exploded/, which holds an "exploded" EAR file with this structure:

	exploded

	|---jumpstart.ear

	    |---jumpstart.jar            --> the business layer

	    |---jumpstart.war            --> the web layer

Jetty runs over this exploded EAR. You can see how the exploder has been configured by displaying the project's properties and choosing Builders.

Reference These files describe the application structure. They rarely need to change.

enterprise/src/main/resources/META-INF/application.xml tells the application server we have a WAR and a JAR, and it says the WAR handles URLs involving jumpstart.

web/src/main/java/jumpstart/web/WEB-INF/web.xml tells the web server how to handle jumpstart URLs - it says filter them through Tapestry!

business/src/main/resources/META-INF/MANIFEST.MF tells the EJB3 server which classpath entries we need (in addition to the ones it provides).
business/src/main/resources/META-INF/persistence.xml tells the EJB3 server how we want to persist data - the datasource name and some settings.

The only one you're likely to change is persistence.xml. See Tips for more on that.

Tapestry expects a class called AppModule to exist to describe services we want added in:

jumpstart.web.services.AppModule

Examples Here are the pieces involved in logging in:

Layer	Source file	Location
View	LogIn.tml	web/src/main/java/jumpstart/web/pages/theapp/
Controller	LogIn.java	web/src/main/java/jumpstart/web/pages/theapp/
Web messages	app.properties	web/src/main/webapp/WEB-INF/
Services	ISecurityFinderSvcLocal.java SecurityFinderSvc.java	business/src/main/java/jumpstart/business/domain/security/iface/ business/src/main/java/jumpstart/business/domain/security/
Entity	User.java	business/src/main/java/jumpstart/business/domain/security/
Business messages	messageDefs.properties	business/src/main/java/

Here are the pieces involved in editing a user. Many are the same as for logging in:

Layer	Source file	Location
View	UserEdit.tml	web/src/main/java/jumpstart/web/pages/theapp/security/
Controller	UserEdit.java	web/src/main/java/jumpstart/web/pages/theapp/security/
Web messages	app.properties	web/src/main/webapp/WEB-INF/
Services	ISecurityFinderSvcLocal.java SecurityFinderSvc.java ISecurityManagerSvcLocal.java SecurityManagerSvc.java	business/src/main/java/jumpstart/business/domain/security/iface/ business/src/java/main/jumpstart/business/domain/security/ business/src/java/main/jumpstart/business/domain/security/iface/ business/src/java/main/jumpstart/business/domain/security/
Entity	User.java	business/src/main/java/jumpstart/business/domain/security/
Business messages	messageDefs.properties	business/src/main/java/

Tapestry locates components that aren't pages a little differently. For example, the "Layout" component:

Layer	Source file	Location
View	Layout.tml	web/src/main/java/jumpstart/web/components/theapp/
Controller	Layout.java	web/src/main/java/jumpstart/web/components/theapp/