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From trad-ex <trad...@inter7.jp>
Subject Re: Problem with script task and properties
Date Fri, 19 May 2006 02:09:13 GMT
Hi Scot,

Thanks a lot for your reply.
Yes, I've already known that behavior of "Variable" Task.
What I would like to know is the proper coding in Script Task by using 
Javascript.

I wonder my conding doesn't make sense ?

Best Regards,
trad-ex

>I think the idea here is to use <var> from ant contrib.  It definitely 
>works and allows one to reset properties...
>
>For instance:
>
><project  name = "example">
>    <taskdef  resource = "net/sf/antcontrib/antlib.xml"/>
>
>    <var name = "my-var" value = "foo"/>
>    <echo message = "my-var = ${my-var}"/>
>
>    <var name = "my-var" value = "bar"/>
>    <echo message = "my-var = ${my-var}"/>
>
>    <var name = "my-var" value = "alpha"/>
>    <echo message = "my-var = ${my-var}"/>
></project>
>
>Will yield:
>
>     [echo] my-var = foo
>     [echo] my-var = bar
>     [echo] my-var = alpha
>
>Above, the variable is being changed...
>
>trad-ex wrote:
>> Hi Steve,
>>
>> I tried to use "Variables" Task in ant-contrib, but it replicate the 
>> same result as Dick did.
>> My build.xml is:
>>
>> <?xml version="1.0" ?>
>> <project name="build" basedir="." default="test">
>> <taskdef resource="net/sf/antcontrib/antlib.xml"/>
>>   <target name="test">
>>      <script language="javascript">
>>         <![CDATA[
>>           project = self.getProject();
>>           echo = project.createTask("echo");
>>           variable = project.createTask("var");
>>           variable.setName("theVal");
>>           variable.setValue("foo");
>>           variable.execute();
>>           echo.setMessage(project.getProperty("theVal"));
>>           echo.perform();
>>           echoval.execute();
>>           variable.setName("theVal");
>>           variable.setValue("bar");
>>           variable.execute();
>>           echo.setMessage(project.getProperty("theVal"));
>>           echo.perform();
>>           echoval.execute();
>>         ]]>
>>       </script>
>>    </target>
>>    <target name="echoval">
>>       <echo>${theVal}</echo>
>>    </target>
>> </project>
>>
>> The Result is:
>>
>> c:\>ant -v
>> Apache Ant version 1.6.2 compiled on July 16 2004
>> Buildfile: build.xml
>> Detected Java version: 1.4 in: C:\j2sdk1.4.1_07\jre
>> Detected OS: Windows XP
>> parsing buildfile C:\build.xml with URI = file:///C:/build.xml
>> Project base dir set to: C:\
>> parsing buildfile 
>> jar:file:/C:/apache-ant-1.6.2/lib/ant-contrib.jar!/net/sf/antcontrib/
>> antlib.xml 
>> with URI = 
>> jar:file:/C:/apache-ant-1.6.2/lib/ant-contrib.jar!/net/sf/antcontrib/
>> antlib.xml
>> Build sequence for target `test' is [test]
>> Complete build sequence is [test, echoval, ]
>>
>> test:
>>      [echo] foo
>>      [echo] foo
>>      [echo] bar
>>      [echo] foo
>>
>> BUILD SUCCESSFUL
>> Total time: 0 seconds
>> c:\>
>>
>> Why ?
>> What's wrong with my description about "Variable" task ?
>> Any comments will be very appreciated.
>>
>> Best Regards,
>> trad-ex
>>
>>   
>>> Dick, Brian E. wrote:
>>>     
>>>> I have just a day to get this working. These are production machines, so
>>>> I can't deploy anything to them.
>>>>
>>>> I'm using sshexec to remotely ping from a unix host and using rcmd to
>>>> remotely ping from a windows host. I redirect the output from these
>>>> tasks to a file and then use loadfile with a filterchain to load the
>>>> ipaddress into a property.
>>>>
>>>> This works all fine and dandy except I need to do it in a loop, so that
>>>> led me to the script task. But I was having problems getting the
>>>> ipaddress set by loadfile back to the script. I didn't want to create
>>>> 20x100 properties, but if that's what it takes, so be it.
>>>>
>>>>       
>>> In that case, grab the <var> task from ant-contrib, which can be used to

>>> erase a property before you reuse it.
>>>
>>>
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>>>     
>>
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>>
>>   
>
>-- 
>Scot P. Floess
>27 Lake Royale
>Louisburg, NC  27549
>
>252-478-8087 (Home)
>919-754-4592 (Work)
>
>Chief Architect JPlate  http://sourceforge.net/projects/jplate
>Chief Architect JavaPIM http://sourceforge.net/projects/javapim


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