Posted by pebuchmann_super on 26 Jun 2009 | Tagged as: Software Development
I found this blog that explains how to install Grails on Max OS X. Copy the downloaded folder to /usr/share/ $cd /usr/share $sudo chown -R root:wheel grails-1.1.1/ $sudo chmod 0755 grails-1.0.1/bin/* $ln -s grails-1.1.1 grails Add the path variable to /ect/profile like on Linux.
Posted by pebuchmann_super on 11 Jun 2009 | Tagged as: Software Development
When deploying a new version of my application (actually I started an entire project from scratch) I continuously bounced my head against this “You don’t have the permission…” exception. I finally added the following lines to my Configuration/config.groovy file: google.appengine.application=”myproject” google.appengine.email=”myname@gmail.com” google.appengine.password=”XXX” where myproject is the part that appears in the url, like myproject.appspot.com.
Posted by pebuchmann_super on 08 Jun 2009 | Tagged as: Software Development
Here are the directions for a patch in a great Screencast by Tomás Lin that makes authentication work in a Grails Application on Google’s App-Engine: google.appengine.sessionEnabled = true // default true google.appengine.enableSsl = true // default true google.appengine.security.useHttps = ["/secure", "/shoppingcart/*", "/admin"] google.appengine.security.requireAdmin = ["/admin", "/notsecuredadmin"] google.appengine.security.requireLogin = ["/admin", "/", "/yabbadabbadoo"] Don’t forget to apply [...]
Posted by pebuchmann_super on 07 Jun 2009 | Tagged as: Software Development
A blog entry about running grails on Google’s App Engine. Among other things the methods that are provided by the App-Engine plugin are listed. The added domain class MetaClass methods are: save get delete findAll withTransaction withPersistenceManager (to execute code with access to the PersistenceManager) isJdoPersistent, isJdoDeleted, isJdoDetached, isJdoDirty, isJdoNew, isJdoTransactional, getJdoTransactionalObjectId, getJdoVersion, getJdoObjectId, and [...]
Posted by pebuchmann_super on 06 Jun 2009 | Tagged as: Software Development
When using the above script the compiler apparently cannot find the Key class for the Google Data Store. A workaround is to simply add the following jar directly to the Classpath: $APPENGINE_HOM/lib/user/appengine-api-1.0-sdk-1.2.1.jar
Posted by pebuchmann_super on 05 Jun 2009 | Tagged as: Uncategorized
When generating a Google AppEngine complient web app in Grails, there is a mistake in the MyApplication/target/war/WEB-INF/datastore-indexes.xml file which causes the shell script $APPENGINE_HOME/bin/appcfg.sh from doing its job properly and eventually prevent you from deploying your application to the appengine. You have to go into the datastore-indexes.xml file and remove the following line: xmlns=”http://appengine.google.com/ns/datastore-indexes/1.0 Thats [...]
Posted by pebuchmann_super on 04 Jun 2009 | Tagged as: Software Development
Since the Data Store behind Google’s AppEngine is not a relational database I have been wondering all along how to manage one-to-many and many-to-many relationships. This links to the Java documentation: http://code.google.com/appengine/docs/java/datastore/relationships.html And here are some well explained examples in Python: http://arbingersys.blogspot.com/2008/04/google-app-engine-one-to-many-join_26.html http://arbingersys.blogspot.com/2008/04/google-app-engine-many-to-many-join_28.html http://arbingersys.blogspot.com/2008/04/google-app-engine-better-many-to-many_30.html