Yes this is a bug in the ant-contrib 's for task (as usual I have forgot my password..)
work-around: use step="-1" if begin and end are the same, and ensure that end >= begin. work-around-2: patch ant-conrib: svn co https://ant-contrib.svn.sourceforge.net/svnroot/ant-contrib/ant-contrib/trunk ant-contrib Index: src/main/java/net/sf/antcontrib/logic/ForTask.java =================================================================== --- src/main/java/net/sf/antcontrib/logic/ForTask.java (revision 177) +++ src/main/java/net/sf/antcontrib/logic/ForTask.java (working copy) @@ -237,7 +237,7 @@ throw new BuildException("step cannot be 0"); } else if (iEnd > begin && step < 0) { throw new BuildException("end > begin, step needs to be > 0"); - } else if (iEnd <= begin && step > 0) { + } else if (iEnd < begin && step > 0) { throw new BuildException("end <= begin, step needs to be < 0"); } } Peter On Mon, Nov 30, 2009 at 11:44 AM, <jan.mate...@rzf.fin-nrw.de> wrote: > <project xmlns:ac="antlib:net.sf.antcontrib"> > <ac:for param="i" begin="0" end="1"> > <sequential> > <echo>i is @{i}</echo> > </sequential> > </ac:for> > </project> > > With begin=end=1 you will get the error message > build.xml:2: end <= begin, step needs to be < 0 > > So I see two possibilities: > 1) the exceptional 1-jvm-case > <macrodef name="doit"> > <attribute name="param"/> > ... > <ac:if> > <equals arg1="${end}" "1"/> > <ac:then> <doit param="1"/> </> > <ac:else> > <ac:for ...> <doit param="@{i}"/> > > 2) NullObject > Maybe your <sequential> implementation could deal with the value '0' (and > do nothing) > > > Jan > > >> -----Ursprüngliche Nachricht----- >> Von: Harry_ [mailto:harjitwo...@gmail.com] >> Gesendet: Montag, 30. November 2009 11:50 >> An: user@ant.apache.org >> Betreff: ForTask throwing exception for same value for begin and end >> >> >> Hi, >> >> I am using ForTask for looping. The end attribute value comes >> from property. >> I am using it like >> >> <property name="JVMInstances" value="2"/> >> >> <for begin="1" end="${JVMInstances}" param="JVMID"> >> >> The above code works fine. >> >> But when I make the value of JVMInstances as 1, then >> exception comes during >> the execution of this Ant file. >> >> Can Any one tell me if it is a known defect that for loop >> does not work with >> same value of begin and end attribute. I am using >> ise.antelope.tasks.ForTask. >> >> >> If this is a defect can anyone tell me how to write a >> function block in ant. >> This will help me in not writing redundant lines in build >> file by testing >> above condition in if Block. >> >> Regards >> -- >> View this message in context: >> http://old.nabble.com/ForTask-throwing-exception-for-same-valu > e-for-begin-and-end-tp26572661p26572661.html >> Sent from the Ant - Users mailing list archive at Nabble.com. >> >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: user-unsubscr...@ant.apache.org >> For additional commands, e-mail: user-h...@ant.apache.org >> >> > > --------------------------------------------------------------------- > To unsubscribe, e-mail: user-unsubscr...@ant.apache.org > For additional commands, e-mail: user-h...@ant.apache.org > > --------------------------------------------------------------------- To unsubscribe, e-mail: user-unsubscr...@ant.apache.org For additional commands, e-mail: user-h...@ant.apache.org
