programmatically enforce foreign keys on storage engines which do not natively support them
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MySQL :: Enforcing Foreign Keys Programmatically in MySQL - 0 views
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done by the use of triggers
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Enforcing Foreign Keys Programmatically in MySQL
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shared by kuni katsuya on 15 Mar 13
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Preemptive commit comments | Arialdo Martini - 0 views
arialdomartini.wordpress.com/...pre-emptive-commit-comments
BDD BehaviorDrivenDevelopment CommitComment BestPractices SoftwareEngineering
shared by kuni katsuya on 15 Mar 13
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Tell me what the software does
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tell me how the software should *behave*, not how the behavior was *implemented* ie. describe the changes in this commit from the behavioral perspective rather than implementation details
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What is the project behavior, in this snapshot?
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What did the programmers, in order to produce this snapshot?
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committing comments describing the
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behavior of the software,
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rather than the
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implementation or a description of what we did
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commits’ comments started to look like BDD’s methods name: a description of a behavior.
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principles
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Talk about the feature, not about yourself
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Don’t refer to the past
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I know it’s now
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list of benefits
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More focus while developing
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Commit review is much easier
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Less cognitive load
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You learn commenting much more precisely
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commit comment becomes a
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declaration of intent
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like a BDD method name
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No more “Just a fix“, “Improvements” or “I made this, this, this and also this” comments.
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BDD/TDD or any methodology aside, these are the worst commit comments as they are as useless as empty commit comments
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Each preemptive comment triggers a micro design session
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A preemptive comment sets a micro goal
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which also aligns well with the 'micro goal' or incremental deliverables approaches of most agile methodologies
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helps to focus a goal to be reached
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Without preemptive comments, I often went on coding, always asking myself: “Should I commit now? Have I reached a stable state which I could consider a good commit?“
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define micro-goals through preemptive comments
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macro-goal through the feature branch name
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A preemptive comment creates a little timebox
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Writing comments preemptively puts the agreement between the pair members to a test
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commit history gains a very balanced granularity
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feature branch becomes a collection of evolutionary commits each of which has usually a 1:1 binding with tests
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very easy to find which commit introduced a bug, since each commit is related to a single new goal/feature
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Preemptive commit comments
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Rule #2: write what the software
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I started taking a lot of care of the words I was using in comments, commits, test names and classes/variables/methods’ names
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be supposed to do,
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not what you did
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should
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Introducing BDD
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began with the simple attempt to replace the world
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“should“
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“test”
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with the world
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Rule #1: write commit comments before coding
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use the same criteria for my commits’ comments as well.
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(not what you did)
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Extending Access Tokens - Facebook Developers - 0 views
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Extending Access Tokens
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validity period of about 1 to 2 hours
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server-side login flow
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automatically get long-lived user access tokens
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refreshes and extends each time the user triggers the login flow
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Extending
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client-side
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user access tokens
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response from this endpoint will include the
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exchange this token for a longer-lived one
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passing it to the /oauth endpoint from your server
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grant_type parameter of fb_exchange_token
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/oauth/access_token
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grant_type=fb_exchange_token
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fb_exchange_token=SHORT_LIVED_ACCESS_TOKEN
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by default you'll receive a short-lived token that is only valid for 1-2 hours
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long-lived access token
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CQ Digital Asset Management - 0 views
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primary representation
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Renditions may be of a different size, with a different resolution, with an added watermark, or some other changed characteristic
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ie. 'encoded' version of original media file (cropped thumbnail, different bitrate/codec video, etc)
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Sub-assets
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assets that make up an asset
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Metadata
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Collection
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collection of assets
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perform an action on an asset or collection
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trigger preconfigured workflows
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Renditions
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uploaded file
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Chapter 10. Integration with CDI - 0 views
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Chapter 10. Integration with CDI
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GraniteDS provides out-of-the-box integration with CDI via the Tide API
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GraniteDS also integrates with container security for authentication and role-based authorization
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always have to include this library in either WEB-INF/lib
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support for CDI is included in the library granite-cdi.jar
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10.1. Configuration with Servlet 3 On Servlet 3 compliant containers, GraniteDS can use the new APIs to automatically register its own servlets and filters and thus does not need any particular configuration in web.xml. This automatic setup is triggered when GraniteDS finds a class annotated with @FlexFilter in one of the application archives:
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@FlexFilter(configProvider=CDIConfigProvider.class) public class GraniteConfig { }
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list of annotation names that enable remote access to CDI beans
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ConfigProvider
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override these values by setting them in the annotation properties
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tide=true, type="cdi", factoryClass=CDIServiceFactory.class, tideInterfaces={Identity.class}
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@FlexFilter declaration will setup an AMF processor for the specified url pattern
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tideAnnotations
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defines suitable default values
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@TideEnabled
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@RemoteDestination
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always declared by default
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tideInterfaces
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tideRoles
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exceptionConverters
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amf3MessageInterceptor
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10.3.2. Typesafe Remoting with Dependency Injection
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It is possible to benefit from even more type safety by using the annotation [Inject] instead of In. When using this annotation, the full class name is used to find the target bean in the CDI context instead of the bean name.
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Security
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integration between the client RemoteObject credentials and the server-side container security
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client-side component named
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identity
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API to define runtime authorization checks on the Flex UI
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login()
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logout()
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login(username, password, loginResult, loginFault)
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logout()
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bindable property
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represents the current authentication state
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loggedIn
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identity.loggedIn
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integrated with server-side role-based security
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identity.hasRole('admin')
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clear the security cache manually with
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identity.clearSecurityCache()
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IRC FAQ - Eclipsepedia - 0 views
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Where are Eclipse preferences stored?
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Preferences are stored in various places (this applies to Eclipse 3.1)
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for each installation (but this may vary for multi-user installations), in files stored in <eclipse_home>/eclipse/configuration/.settings/
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for each workspace, in files stored in <workspace>/.metadata/.plugin/org.eclipse.core.runtime/.settings
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for each project --for project-level settings -- in files stored in a .settings sub-directory of your project folder
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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.
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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?
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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.
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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.
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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.
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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.
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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
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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?
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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.
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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.
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4.2 Where are Eclipse's log files located?
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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
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Where are Eclipse preferences stored?
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Where are Eclipse preferences stored?
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Where are Eclipse preferences stored?
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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.
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java - Flex+JPA/Hibernate+BlazeDS+MySQL how to debug this monster? - Stack Overflow - 0 views
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Set break points in my Java code Start up the Java application server with the appropriate debug JVM properties set (e.g. -Xdebug -Xrunjdwp:transport=dt_socket,address=8000,server=y,suspend=n) From Eclipse, I attach a remote debugger to the app server on the default port 8000. The Java Debugger will open up when a break point is hit. Set breakpoints in my Flex application (or one of its modules). From Eclipse (with Flash Builder) I launch a debug configuration for my Flex app. The Flex Debugger will open up when a break point is hit. At this point I have two debuggers open and everything work great. Two other things I do: a) extend the transaction system timeout, so it doesn't get trigger while I am sitting there think for a few minutes b) use Charles Proxy (in reverse proxy mode) inbetween the client and server to watch the AMF traffic and view payloads, etc.
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Flex+JPA/Hibernate+BlazeDS+MySQL how to debug this monster?