{"id":237,"date":"2012-02-04T23:03:35","date_gmt":"2012-02-04T22:03:35","guid":{"rendered":"http:\/\/www.nax.cz\/?p=237"},"modified":"2012-02-04T23:03:35","modified_gmt":"2012-02-04T22:03:35","slug":"spring-roo-app-engine-even-friends-1","status":"publish","type":"post","link":"https:\/\/nax.cz\/?p=237","title":{"rendered":"spring roo + app engine => even friends (part 1)"},"content":{"rendered":"

Platform as a service really taking of lately (ups – last 3 years \ud83d\ude09 and I’ve decided that it is time for me to start messing around and try what is actually user experience and what frameworks to use.<\/p>\n

I started with simple idea – lets write an app. And because I travel a lot and I travel with friends, I decided to create another expense tracking app, but this time specialized to solve post trip sorting-out-bills-split-headache.<\/p>\n

First I watched a few tutorial videos like this one<\/a> and installed maven (from Ubuntu repository) and roo (downloaded latest zip file – v1.2.0.RC1 [rev dcaa483]).<\/p>\n


\ncd ~\/src\/roo-projects\/
\nmkdir evenfriends
\nroo
\n<\/code><\/p>\n

This gives you roo console. Now lets create some data model:
\n
\nproject --topLevelPackage cz.nax.evenfriends
\njpa setup --provider HIBERNATE --database HYPERSONIC_IN_MEMORY<\/p>\n

entity jpa --class ~.domain.Currency --testAutomatically
\nfield string --fieldName code --notNull --sizeMax 3
\nfield string --fieldName rateToDolar --notNull<\/p>\n

entity jpa --class ~.domain.Traveler --testAutomatically
\nfield string --fieldName name --notNull
\nfield reference --fieldName homeCurrency --type ~.domain.Currency<\/p>\n

entity jpa --class ~.domain.Bill --testAutomatically
\nfield string --fieldName description --notNull
\nfield reference --fieldName payedBy --type ~.domain.Traveler
\nfield number --fieldName amount --type java.lang.Float
\nfield reference --fieldName currency --type ~.domain.Currency
\nfield set --fieldName consumedBy --type ~.domain.Traveler<\/p>\n

entity jpa --class ~.domain.Trip --testAutomatically
\nfield string --fieldName name --notNull
\nfield date --fieldName fromDate --type java.util.Date
\nfield date --fieldName toDate --type java.util.Date
\nfield set --fieldName bills --type ~.domain.Bill
\nweb mvc setup
\nweb mvc all --package cz.nax.evenfriends.domain<\/p>\n

test integration
\nperform test
\n<\/code><\/p>\n

Then I got error when I tried to run perform eclipse<\/code>
\n
\n[ERROR] BUILD ERROR
\n[INFO] ------------------------------------------------------------------------
\n[INFO] Failed to resolve artifact.
\nroo>
\nMissing:
\n----------
\n1) com.sun:tools:jar:1.4.2
\nroo>
\n Try downloading the file manually from the project website.
\nroo>
\n Then, install it using the command:
\n mvn install:install-file -DgroupId=com.sun -DartifactId=tools -Dversion=1.4.2 -Dpackaging=jar -Dfile=\/path\/to\/file
\nroo>
\n Alternatively, if you host your own repository you can deploy the file there:
\n mvn deploy:deploy-file -DgroupId=com.sun -DartifactId=tools -Dversion=1.4.2 -Dpackaging=jar -Dfile=\/path\/to\/file -Durl=[url] -DrepositoryId=[id]
\nroo>
\n Path to dependency:
\n 1) org.codehaus.mojo:aspectj-maven-plugin:maven-plugin:1.2
\n 2) com.sun:tools:jar:1.4.2
\n----------
\n1 required artifact is missing.
\nfor artifact:
\n org.codehaus.mojo:aspectj-maven-plugin:maven-plugin:1.2
\nfrom the specified remote repositories:
\n spring-maven-milestone (http:\/\/maven.springframework.org\/milestone),
\n central (http:\/\/repo1.maven.org\/maven2),
\n spring-roo-repository (http:\/\/spring-roo-repository.springsource.org\/release),
\n codehaus.org (http:\/\/snapshots.repository.codehaus.org),
\n spring-maven-release (http:\/\/maven.springframework.org\/release)
\n<\/code><\/p>\n

I downloaded file from here<\/a> and executed recommended file:<\/p>\n

mvn install:install-file -DgroupId=com.sun -DartifactId=tools -Dversion=1.4.2 -Dpackaging=jar -Dfile=\/space\/usr\/springsource\/spring-roo-1.1.5.RELEASE\/sts-cache-bEven\/aspectjtools-1.6.12.M2.jar
\nmvn install:install-file -DgroupId=com.sun -DartifactId=tools -Dversion=1.4.2 -Dpackaging=jar -Dfile=\/usr\/lib\/jvm\/jdk1.6.0_20\/lib\/tools.jar
\n<\/code><\/p>\n

didn’t help.<\/p>\n

I search a bit and found the post that talking about problems with version of jdk<\/a> (or mixing it up with jre).<\/p>\n


\n~\/src\/workspace\/bEven$ ls -l \/usr\/bin\/java
\nlrwxrwxrwx 1 root root 22 2010-08-02 09:49 \/usr\/bin\/java -> \/etc\/alternatives\/java
\n~\/src\/workspace\/bEven$ ls -l \/etc\/alternatives\/java
\nlrwxrwxrwx 1 root root 40 2010-08-02 09:49 \/etc\/alternatives\/java -> \/usr\/lib\/jvm\/java-6-openjdk\/jre\/bin\/java
\n~\/src\/workspace\/bEven$ cd \/etc\/alternatives\/
\n\/etc\/alternatives$ sudo ln -s \/usr\/lib\/jvm\/jdk1.6.0_20\/bin\/java java
\n\/etc\/alternatives$ sudo ln -s \/usr\/lib\/jvm\/jdk1.6.0_20\/bin\/javaws
\n<\/code><\/p>\n

and it really helped!
\n
\nroo> perform test
\n... downloaded some dependencies ...
\n-------------------------------------------------------
\n T E S T S
\n-------------------------------------------------------
\nResults :
\nTests run: 36, Failures: 0, Errors: 0, Skipped: 0
\n[INFO] ------------------------------------------------------------------------
\n[INFO] BUILD SUCCESSFUL
\n[INFO] ------------------------------------------------------------------------
\n[INFO] Total time: 3 minutes 52 seconds
\n[INFO] Finished at: Sun Jan 29 19:52:43 CET 2012
\n[INFO] Final Memory: 33M\/228M
\n[INFO] ------------------------------------------------------------------------
\nroo> perform eclipse
\n... downloaded some dependencies ...
\n[INFO] ------------------------------------------------------------------------
\n[INFO] BUILD SUCCESSFUL
\n[INFO] ------------------------------------------------------------------------
\n[INFO] Total time: 2 minutes 41 seconds
\n[INFO] Finished at: Sun Jan 29 19:57:22 CET 2012
\n[INFO] Final Memory: 25M\/188M
\n[INFO] ------------------------------------------------------------------------
\n<\/code><\/p>\n

I continued in command line (bash):<\/p>\n


\nmvn tomcat:run
\nmvn selenium:selenese
\n<\/code><\/p>\n

then I returned to roo and wrote
\n
\nperform eclipse
\n<\/code><\/p>\n

and now I can run springsource IDE.<\/p>\n

I used integrated google app engine deploy plugin, but unfortunately I am getting:
\n
\nError: Server Error<\/p>\n

The server encountered an error and could not complete your request.
\nIf the problem persists, please report your problem and mention this error message and the query that caused it.
\n<\/code><\/p>\n

I can see in logs following errors:
\n
\nCould not instantiate listener org.springframework.web.context.ContextLoaderListener
\njava.lang.ClassNotFoundException: org.springframework.web.context.ContextLoaderListener
\n\tat com.google.appengine.runtime.Request.process-931dad6b90a83fb7(Request.java)
\n\tat java.lang.ClassLoader.loadClass(ClassLoader.java:266)
\n\tat org.mortbay.jetty.handler.ContextHandler.loadClass(ContextHandler.java:1101)
\n\tat org.mortbay.jetty.webapp.WebXmlConfiguration.initListener(WebXmlConfiguration.java:630)
\n\tat org.mortbay.jetty.webapp.WebXmlConfiguration.initWebXmlElement(WebXmlConfiguration.java:368)
\n\tat org.mortbay.jetty.webapp.WebXmlConfiguration.initialize(WebXmlConfiguration.java:289)
\n\tat org.mortbay.jetty.webapp.WebXmlConfiguration.configure(WebXmlConfiguration.java:222)
\n\tat org.mortbay.jetty.webapp.WebXmlConfiguration.configureWebApp(WebXmlConfiguration.java:180)
\n\tat org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1247)
\n\tat org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:517)
\n\tat org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:467)
\n\tat org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
\n\tat com.google.tracing.TraceContext$TraceContextRunnable.runInContext(TraceContext.java:449)
\n\tat com.google.tracing.TraceContext$TraceContextRunnable$1.run(TraceContext.java:455)
\n\tat com.google.tracing.TraceContext.runInContext(TraceContext.java:695)
\n\tat com.google.tracing.TraceContext$AbstractTraceContextCallback.runInInheritedContextNoUnref(TraceContext.java:333)
\n\tat com.google.tracing.TraceContext$AbstractTraceContextCallback.runInInheritedContext(TraceContext.java:325)
\n\tat com.google.tracing.TraceContext$TraceContextRunnable.run(TraceContext.java:453)
\n\tat java.lang.Thread.run(Thread.java:679)
\njava.lang.ClassNotFoundException: org.springframework.web.filter.CharacterEncodingFilter
\n\tat com.google.appengine.runtime.Request.process-931dad6b90a83fb7(Request.java)
\n\tat java.lang.ClassLoader.loadClass(ClassLoader.java:266)
\n\tat org.mortbay.util.Loader.loadClass(Loader.java:91)
\n\tat org.mortbay.util.Loader.loadClass(Loader.java:71)
\n\tat org.mortbay.jetty.servlet.Holder.doStart(Holder.java:73)
\n\tat org.mortbay.jetty.servlet.FilterHolder.doStart(FilterHolder.java:81)
\n\tat org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
\n\tat org.mortbay.jetty.servlet.ServletHandler.initialize(ServletHandler.java:662)
\n\tat org.mortbay.jetty.servlet.Context.startContext(Context.java:140)
\n\tat org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1250)
\n\tat org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:517)
\n\tat org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:467)
\n\tat org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
\n\tat com.google.tracing.TraceContext$TraceContextRunnable.runInContext(TraceContext.java:449)
\n\tat com.google.tracing.TraceContext$TraceContextRunnable$1.run(TraceContext.java:455)
\n\tat com.google.tracing.TraceContext.runInContext(TraceContext.java:695)
\n\tat com.google.tracing.TraceContext$AbstractTraceContextCallback.runInInheritedContextNoUnref(TraceContext.java:333)
\n\tat com.google.tracing.TraceContext$AbstractTraceContextCallback.runInInheritedContext(TraceContext.java:325)
\n\tat com.google.tracing.TraceContext$TraceContextRunnable.run(TraceContext.java:453)
\n\tat java.lang.Thread.run(Thread.java:679)
\nFailed startup of context com.google.apphosting.utils.jetty.RuntimeAppEngineWebAppContext@84f566{\/,\/base\/data\/home\/apps\/s~evenfriends\/1.356450658059803861}
\njavax.servlet.UnavailableException: org.springframework.web.filter.CharacterEncodingFilter
\n\tat org.mortbay.jetty.servlet.Holder.doStart(Holder.java:79)
\n\tat org.mortbay.jetty.servlet.FilterHolder.doStart(FilterHolder.java:81)
\n\tat org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
\n\tat org.mortbay.jetty.servlet.ServletHandler.initialize(ServletHandler.java:662)
\n\tat org.mortbay.jetty.servlet.Context.startContext(Context.java:140)
\n\tat org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1250)
\n\tat org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:517)
\n\tat org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:467)
\n\tat org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
\n\tat com.google.apphosting.runtime.jetty.AppVersionHandlerMap.createHandler(AppVersionHandlerMap.java:202)
\n\tat com.google.apphosting.runtime.jetty.AppVersionHandlerMap.getHandler(AppVersionHandlerMap.java:171)
\n\tat com.google.apphosting.runtime.jetty.JettyServletEngineAdapter.serviceRequest(JettyServletEngineAdapter.java:123)
\n\tat com.google.apphosting.runtime.JavaRuntime$RequestRunnable.run(JavaRuntime.java:422)
\n\tat com.google.tracing.TraceContext$TraceContextRunnable.runInContext(TraceContext.java:449)
\n\tat com.google.tracing.TraceContext$TraceContextRunnable$1.run(TraceContext.java:455)
\n\tat com.google.tracing.TraceContext.runInContext(TraceContext.java:695)
\n\tat com.google.tracing.TraceContext$AbstractTraceContextCallback.runInInheritedContextNoUnref(TraceContext.java:333)
\n\tat com.google.tracing.TraceContext$AbstractTraceContextCallback.runInInheritedContext(TraceContext.java:325)
\n\tat com.google.tracing.TraceContext$TraceContextRunnable.run(TraceContext.java:453)
\n\tat com.google.apphosting.runtime.ThreadGroupPool$PoolEntry.run(ThreadGroupPool.java:251)
\n\tat java.lang.Thread.run(Thread.java:679)
\nUncaught exception from servlet
\njavax.servlet.UnavailableException: Initialization failed.
\n\tat com.google.apphosting.runtime.jetty.AppVersionHandlerMap.createHandler(AppVersionHandlerMap.java:211)
\n\tat com.google.apphosting.runtime.jetty.AppVersionHandlerMap.getHandler(AppVersionHandlerMap.java:171)
\n\tat com.google.apphosting.runtime.jetty.JettyServletEngineAdapter.serviceRequest(JettyServletEngineAdapter.java:123)
\n\tat com.google.apphosting.runtime.JavaRuntime$RequestRunnable.run(JavaRuntime.java:422)
\n\tat com.google.tracing.TraceContext$TraceContextRunnable.runInContext(TraceContext.java:449)
\n\tat com.google.tracing.TraceContext$TraceContextRunnable$1.run(TraceContext.java:455)
\n\tat com.google.tracing.TraceContext.runInContext(TraceContext.java:695)
\n\tat com.google.tracing.TraceContext$AbstractTraceContextCallback.runInInheritedContextNoUnref(TraceContext.java:333)
\n\tat com.google.tracing.TraceContext$AbstractTraceContextCallback.runInInheritedContext(TraceContext.java:325)
\n\tat com.google.tracing.TraceContext$TraceContextRunnable.run(TraceContext.java:453)
\n\tat com.google.apphosting.runtime.ThreadGroupPool$PoolEntry.run(ThreadGroupPool.java:251)
\n\tat java.lang.Thread.run(Thread.java:679)
\n<\/code><\/p>\n","protected":false},"excerpt":{"rendered":"

Platform as a service really taking of lately (ups – last 3 years \ud83d\ude09 and I’ve decided that it is time for me to start messing around and try what is actually user experience and what frameworks to use. I started with simple idea – lets write an app. And because I travel a lot […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3,6],"tags":[],"class_list":["post-237","post","type-post","status-publish","format-standard","hentry","category-cloud","category-google"],"_links":{"self":[{"href":"https:\/\/nax.cz\/index.php?rest_route=\/wp\/v2\/posts\/237","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nax.cz\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nax.cz\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nax.cz\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/nax.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=237"}],"version-history":[{"count":0,"href":"https:\/\/nax.cz\/index.php?rest_route=\/wp\/v2\/posts\/237\/revisions"}],"wp:attachment":[{"href":"https:\/\/nax.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=237"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nax.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=237"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nax.cz\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=237"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}