(1) Well I tried adding bcel.jar to my ant/lib directory but it made no
difference.
What did make a difference was my choice of .class file to load. Instead of my
Diagnostic.class
I tried a simpler Version.class and then I received no error, even *without*
bcel.jar. So this seems like a data-dependent bug...
(2) As I could successfully execute with my Version.class, how do I then
*access* the properties?
I have a constant named VERSION. I tried <echo> with "${VERSION}" and with
"${com.cleancode.data.Version.VERSION}" but neither had a value. What are the rules for the
name of a property from a class file?
On Fri, 21 Jan 2005 15:16:34 -0500, Erik Hatcher <[EMAIL PROTECTED]> wrote:
You need BCEL. See here for details:
http://ant.apache.org/manual/install.html
On Jan 21, 2005, at 1:48 PM, michael sorens wrote:
The errors I showed are from -debug. Without it it just says
"IOException". Everything else looks reasonable.
Yes, ${javabin} is set. I get a different error if the file is not
found.
On Fri, 21 Jan 2005 17:47:53 +0100, <[EMAIL PROTECTED]> wrote:
- what does "-debug" say?
- is ${javabin} set?
Jan
-----Ursprüngliche Nachricht-----
Von: michael sorens [mailto:[EMAIL PROTECTED]
Gesendet am: Freitag, 21. Januar 2005 17:45
An: Ant Users List
Betreff: Re: ant access of java constants
I tried adding this chunk of code:
<loadproperties
srcfile="${javabin}/com/cleancode/data/Diagnostic.class">
<filterchain>
<classconstants/>
</filterchain>
</loadproperties>
but received this error:
C:\usr\ms\devel\cleancode-support\build.xml:100: Unable to
load file: java.io.IOException
at
org.apache.tools.ant.taskdefs.LoadProperties.execute(LoadPrope
rties.java:225)
at
org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:275)
at org.apache.tools.ant.Task.perform(Task.java:364)
at org.apache.tools.ant.Target.execute(Target.java:341)
at org.apache.tools.ant.Target.performTasks(Target.java:369)
at
org.apache.tools.ant.Project.executeTarget(Project.java:1214)
at
org.apache.tools.ant.Project.executeTargets(Project.java:1062)
. . .
--- Nested Exception ---
java.io.IOException
at
org.apache.tools.ant.filters.ClassConstants.read(ClassConstant
s.java:136)
at
org.apache.tools.ant.filters.BaseFilterReader.read(BaseFilterR
eader.java:86)
at java.io.Reader.read(Reader.java:100)
at
org.apache.tools.ant.util.FileUtils.readFully(FileUtils.java:1126)
at
org.apache.tools.ant.filters.util.ChainReaderHelper.readFully(
ChainReaderHelper.java:231)
at
org.apache.tools.ant.taskdefs.LoadProperties.execute(LoadPrope
rties.java:202)
at
org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:275)
. . .
Any thoughts?
On Fri, 21 Jan 2005 05:16:27 -0500, Erik Hatcher
<[EMAIL PROTECTED]> wrote:
> And even easier, you can do it with the ClassConstants
FilterReader! :)
>
>
http://ant.apache.org/manual/CoreTypes/
filterchain.html#classconstants
>
>
> On Jan 21, 2005, at 2:53 AM, [EMAIL PROTECTED] wrote:
>
>> You can do that via API calls
>> - your own task
>> - <script>
>> But you have to ensure that the class can be found.
>>
>> Example:
>> --------
>> public class MyClass {
>> public static final String TEXT = "MyClass sais: Hello
World";
>> }
>>
>> <project>
>> <script language="javascript">
>> importClass(Packages.MyClass);
>> project.setNewProperty("out", MyClass.TEXT);
>> </script>
>> <echo>OUTPUT: ${out}</echo>
>> </project>
>>
>> $ ant -lib .
>>
>>
>> Jan
>>
>>
>>> -----Ursprüngliche Nachricht-----
>>> Von: michael sorens [mailto:[EMAIL PROTECTED]
>>> Gesendet am: Freitag, 21. Januar 2005 02:24
>>> An: user@ant.apache.org
>>> Betreff: ant access of java constants
>>>
>>> Is it possible to set an ant property to a value that is a
>>> static constant from a Java class file?
>>> Example:
>>>
>>> public class Stuff {
>>> . . .
>>> static final int FOOBAR=42;
>>> . . .
>>> }
>>>
>>> Access with something like this...?
>>>
>>> <property name="foobar" value=???? Stuff.FOOBAR />
>>>
>>> Or more generally, could one set a property to the value of a
>>> static method?
>>>
>>>
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>
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