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Posted to dev@ant.apache.org by bu...@apache.org on 2003/08/25 19:50:37 UTC
DO NOT REPLY [Bug 22705] New: -
ant 1.6alpha (and possibly earlier) requires JDK 1.4
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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=22705
ant 1.6alpha (and possibly earlier) requires JDK 1.4
Summary: ant 1.6alpha (and possibly earlier) requires JDK 1.4
Product: Ant
Version: 1.6Alpha (nightly)
Platform: PC
OS/Version: Windows NT/2K
Status: NEW
Severity: Normal
Priority: Other
Component: Core tasks
AssignedTo: dev@ant.apache.org
ReportedBy: ers@wildfire.com
Contrary to the statement on the ant welcome page, there is a dependency on
having JDK 1.4 or higher. The problem appears when I use the <description> tag
to provide a project-wide description, and I also have several targets that use
the description attribute. I run "ant -projecthelp" and get a NoSuchMethodError:
% ant -f customizations-build.xml -projecthelp
Buildfile: customizations-build.xml
java.lang.NoSuchMethodError
at org.apache.tools.ant.types.Description.concatDescriptions
(Description.java:123)
at org.apache.tools.ant.types.Description.getDescription
(Description.java:104)
at org.apache.tools.ant.Project.getDescription(Project.java:721)
at org.apache.tools.ant.Main.printDescription(Main.java:823)
at org.apache.tools.ant.Main.runBuild(Main.java:599)
at org.apache.tools.ant.Main.start(Main.java:198)
at org.apache.tools.ant.Main.main(Main.java:245)
I'm using ant 1.6alpha, but if my diagnosis of the problem is correct, this
problem should show up with later versions of ant 1.5.x. In revision 1.9 of
Description.java, the following snippet of code showed up:
private static void concatDescriptions(Project project, Target t,
StringBuffer description)
{
if( t==null ) return;
Vector tasks= findElementInTarget(project, t, "description");
if( tasks==null ) return;
for( int i=0; i<tasks.size(); i++ ) {
Task task=(Task)tasks.elementAt(i);
if( ! ( task instanceof UnknownElement)) {
continue;
}
UnknownElement ue=((UnknownElement)task);
StringBuffer descComp=ue.getWrapper().getText();
if( descComp != null ) {
*******************************************************
description.append( descComp );
*******************************************************
}
}
}
The offending line is the one surrounded by *'s. The problem is that the
StringBuffer method "StringBuffer append(StringBuffer)" wasn't added until JDK
1.4. Previously, there were many other variants of append(), but not that
particular one.
This problem can easily be worked around by changing the line
to "description.append( new String(descComp) );"
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