Group items tagged

From Spring to Java EE 6

if you’ve heard Rod Johnson speak he is always adamant that Spring has replaced Java EE. Its good to see that his rhetoric is utter BS!

Sorry, even Spring MVC sucks as much balls as JSF does.

Java EE wins over Spring

CDI closed API hole

Application server started to get their act together with regards to boot time.  It started with Glassfish and ended with JBoss 7.  Both of which can boot in a matter of seconds.

Arquillian allows you to run your unit tests in a real environment with real transactions, etc.  Personally I always despised mocks because they didn’t test in the environment you were going to run in.  I thought they were pointless and to this day, I refuse to use this testing pattern.

I’m glad Rod and company were able to cash out with the VMWare acquisition before Java EE was able to regain its dominance

SpringSource pushed Java EE to innovate and for that I’m very grateful.  For Java EE, it was either evolve or die.  They evolved, now its time for Spring to die.

Baseline Diagram Comparison Conduct a visual diagram comparison between your current diagram and a previous baseline .

Personal Information Window See how the Personal Information Window in Enterprise Architect can help you organize your daily tasks and workflow.

Working Sets As you perform work on your model, you open various windows, diagrams and views. Working Sets allow you to return to these same views in a later work session.

Business Rules A car rental system is used to illustrate how to generate executable business rules using Enterprise Architect.

Event Bus

Contextual Components and Conversations

Contexts and Components

two main kinds of contexts:

unique context that exists during the whole lifetime of the Flex application

compared to to the server-side session

temporary contexts that can be created and destroyed at any time during the lifetime of the application

can exist simultaneously

isolated from each other

Components are stateful objects that can be of any ActionScript 3 class with a default constructor

have a name

A context is mostly a container for component instances

three available scopes:

file listed under the filename parameter can be deployed to the server using the deploy goal

deploy

redeploy

undeploy

<phase>install</phase>

<goal>deploy</goal>

Deploying other artifacts

possible to deploy other artifacts that are not related to your deployment, e.g. database drivers:

<phase>install</phase>

<goal>deploy-artifact</goal>

<configuration> <groupId>postgresql</groupId> <artifactId>postgresql</artifactId> <name>postgresql.jar</name> </configuration>

artifact must be already listed as a dependency in the projects pom.xml.

Deploying your application in domain mode.

add the domain tag as well as specify at least one server group.

<domain> <server-groups> <server-group>main-server-group</server-group> </server-groups> </domain>

for each workspace, in files stored in <workspace>/.metadata/.plugin/org.eclipse.core.runtime/.settings

for each project --for project-level settings -- in files stored in a .settings sub-directory of your project folder

Is there an UML editor for Eclipse? An Eclipse Modelling project-based UML editor can be installed from the Eclipse update site "Modelling > UML2 Tools SDK". See Creating UML 2 diagrams with Eclipse UML2 Tools - Tutorial for an introduction.

How do I debug Eclipse? How can I see what plug-ins are being started? Why aren't the plug-ins I installed showing up in the UI? How do I start the OSGi console?

Debugging OSGi Bundle Loading Issues There are a few flags you can pass to Eclipse on the commandline or in your eclipse.ini file that might help: -consolelog - log everything in workspace/.metadata/.log to the console where you launched Eclipse as well -debug - more verbose console output -console - start the Equinox OSGi console to interact with OSGi directly -noexit - when Eclipse closes, keep the OSGi console running until you type 'exit' or hit CTRL-C so you can keep debugging See Where Is My Bundle? for an overview of how to use the OSGi console for diagnosing problems.

Debugging Eclipse Using Eclipse You can also debug an Eclipse instance from another instance through remote debugging: Start the instance to be debugged with "-vmargs -Xdebug -agentlib:jdwp=transport=dt_socket,server=y,address=8000". You should see a message like "Listening for transport dt_socket at address: 8000" Open Run → Debug Configurations... and create a Remote Java Application configuration with connection type "Socket Attach" and connecting to the client at port 8000. Set the project to a bundle project with the right dependencies for the bundles that you are trying to debug. Launch the configuration. The JDWP agent supports other useful arguments, like "suspend=n" so that the process does not suspend. For more details, see Oracle's Java Debug Wire Protocol (JDWP) connection docs.

I just installed Eclipse on my 64-bit system, but it does not start. What is the problem? Make sure that you have downloaded the 64-bit version of Eclipse (it should have x86_64 somewhere in its name) and have installed a 64-bit JVM. Likewise, if you run a 32-bit JVM, then you should use the 32-bit version of Eclipse.

When I start Eclipse it says "Workspace in use or cannot be created, choose a different one.", what should I do? There are a couple of things you can try. Delete the workspace/.metadata/.lock file. Check your running processes to make sure there aren't any remaining Java or Eclipse processes running. When in doubt, restart your computer. :) Try starting Eclipse on a different workspace (from the workspace selection dialog, or by using a command line argument like -data /home/user/tmp-workspace), then switch back to your original workspace.

How do I uninstall a plug-in? You can view your list of installed software by checking your installation details from about dialog. Help > About > Installation Details

I'm having memory, heap, or permgen problems, what can I do? FAQ How do I increase the heap size available to Eclipse? FAQ How do I increase the permgen size available to Eclipse?

Eclipse seems to be hanging on startup. How can I find out why? If none of the solutions outlined in this section reveal the problem, then you can try debugging an Eclipse instance as a debug target from another Eclipse instance. This is surprisingly easy: Start Eclipse in a "new" blank workspace (e.g., C:\TEMP\WS, or /tmp) Create a new Debug configuration: Run -> Debug Configurations; then click on "Eclipse Applications" and select the New Launch Configuration. If you believe it's something about a particular workspace, then set the workspace to your normal workspace. If you believe the hang is caused by a particular plugin, disable the plugin and verify. Launch and then see. Using this approach, you can break with the debugger to see where hangs are occurring. You can also change the selection of plugins that the instance is launched with.

I was working on a project and doing something or other does not work. Where should I start? Try refreshing your projects. Try cleaning your your projects using the menu item Project/Clean to trigger a rebuild. Try closing/reopening your projects. Try restarting Eclipse.

4.2 Where are Eclipse's log files located?

Where are Eclipse's log files located? <workspace>/.metadata/.log You can view this workspace log as a view if you have PDE installed on your computer (which you would if you have downloaded the Eclipse SDK). You can open that view via Window -> Show View -> Other -> PDE Runtime -> Error Log. <eclipse install>/configuration/<sometimestamp>.log <eclipse install>/configuration/org.eclipse.update/install.log

Where are Eclipse preferences stored?

Where are Eclipse preferences stored?

Where are Eclipse preferences stored?

Where are update site bookmarks stored? It is within an XML file called <user_home>/.eclipse/org.eclipse.platform_3.1.2/configuration/org.eclipse.update/bookmarks.xml. Your Eclipse version may vary.