[sword-devel] sword-devel Digest, Vol 73, Issue 45

Chris Burrell chris at burrell.me.uk
Wed Apr 28 13:36:51 MST 2010

Hi All

I've now updated the page on the wiki that gives you a brief idea of the
design patterns in use and how Tyndale STEP is structured with some code
samples: http://crosswire.org/wiki/Tyndale_Step_High_Level_Design

<http://crosswire.org/wiki/Tyndale_Step_High_Level_Design>Let me know if
things aren't particularly clear, or feel free to edit them yourselves!
As far as developing the features in the Crosswire JIRA, would you be able
to create an account and assign those issues to yourselves? Also, the
current UI is probably going to go completely, but there to be copied in
parts. So we should probably start on a new GWT Entry Point, from a fresh


On 28 April 2010 09:03, Chris Burrell <chris at burrell.me.uk> wrote:

> Excellent! Good news. I'll try those settings here later on and if they
> work, I'll submit a new revision of the pom.
> Chris
> On 28 April 2010 03:17, Yiguang Hu <yighu at yahoo.com> wrote:
>> Chris,
>> I followed the steps and found the problem is in test and gwt:compile. The
>> following did the trick.
>> <extraJvmArgs>-Xmx1024M -XstartOnFirstThread -Dconnection.string="${db.connection.string}"
>> -Ddb.driver=${db.driver}</extraJvmArgs>
>> So Step is build in my local now.
>> thanks
>> Yiguang
>> ------------------------------
>> *From:* Chris Burrell <chris at burrell.me.uk>
>> *To:* Yiguang Hu <yighu at yahoo.com>
>> *Cc:* SWORD Developers' Collaboration Forum <sword-devel at crosswire.org>;
>> wes at werxltd.com; Brian Jolly <brian at brianjolly.com>
>> *Sent:* Tue, April 27, 2010 6:14:50 PM
>> *Subject:* Re: [sword-devel] sword-devel Digest, Vol 73, Issue 45
>> Hi Yiguang
>> A maven command looks like this:
>> mvn phase1 phase2 phase3  or mvn plugin:goal
>> During a build phase, maven invokes a number of plugins. For example,
>> during the compile phase, the java compiler plugin is invoked, the gwt
>> compiler is invoked, etc. So, when you're invoking mvn clean install, it is
>> the same as mvn clean, followed by mvn install
>> The parent pom.xml defines a number of modules. (<modules> tag) When you
>> invoke mvn clean or mvn install at the top level, all it does is cds into
>> each module in turn, and invokes the same command. The child poms (at the
>> top of the pom) contain the reference to the parent. In a way, the mvn -pl
>> <modulename> clean install command you did earlier last week is the same as
>> cd <modulename> & mvn clean install
>> clean basically gets rid of all the target folders under each module. When
>> you invoke the build lifecycle (for e.g. install), it does all the phases
>> up-to and including that.
>> So mvn install can be broken down as follows
>> mvn validate
>> mvn compile
>> mvn test
>> mvn package
>> mvn integration-test
>> mvn verify
>> mvn install
>> but skips the last stage:
>> mvn deploy
>> If you're getting a warning about serialization, I reckon you're running
>> out of memory during the GWT compiliation, which happens during the compile
>> phase mentioned above.
>> To prove this, I think you could try the following. First prove you can
>> successfully build step-dataloader:
>> 1- cd into step-dataloader
>> 2- mvn clean
>> 3- mvn install
>> [if that works, you've got at least 1 of the 4 modules working!]
>> 4- cd into step-web-app, and run
>> 5- mvn clean
>> 6- mvn compiler:compile (invoking the compile goal on the maven java
>> compiler plugin)
>> 7- mvn gwt:compile (invoking the compile goal on the gwt maven plugin)
>> The warning (if it's the one I'm thinking of) is fine and due to a library
>> we're using which hasn't been upgraded to GWT 2.0.
>> I came across this:
>> http://code.google.com/p/gwt-maven/issues/detail?id=65
>> which suggests you should try increasing the memory allocated to the
>> gwt:compile. so in your pom.xml, find the gwt compiler plugin (under
>> <build><plugins>, find the plugin called gwt-maven-plugin and under the
>> <extraJvmArguments> specify some good memory arguments, for e.g.
>> -Xmx1024M -XstartOnFirstThread
>> so your tag would like something like:
>> <extraJvmArgs>-Xmx1024M -XstartOnFirstThread -Dconnection.string="${db.connection.string}"
>> -Ddb.driver=${db.driver}</extraJvmArgs>
>> Hope that helps. It might be that, because I specified the extraJvmArgs
>> attribute, I lost the default of -Xmx512M and thereby the defaults are the
>> OS defaults. Also, apparently the startOnFirstThread is a Mac OS specific
>> argument which apparently fixes JVM issues on Mac OS Leopard
>> Hope that helps!
>> Chris
>> On 27 April 2010 22:27, Yiguang Hu <yighu at yahoo.com> wrote:
>>> Chris,
>>> I am on both lists. I have not resolved OOM yet. The OOM happens during
>>> mvn clean install (seems it was doing some serialization related things
>>> before OOM. And I didn't notice a memory surge during the process). Will
>>> look at the pom file to see how to do it by individual modules. (I am new to
>>> mvn). It would be great if you can show me how to divide mvn clean install
>>> into more steps for building the STEP.
>>> Thanks
>>> Yiguang
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