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fix npe on empty repository

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This commit is contained in:
Sebastian Sdorra
2012-08-03 08:31:09 +02:00
parent 579e163949
commit 1a63bb58e2
1 changed files with 49 additions and 7 deletions
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56
scm-plugins/scm-hg-plugin/src/main/java/sonia/scm/repository/spi/HgTagsCommand.java
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@@ -30,15 +30,18 @@
*/
package sonia.scm.repository.spi;
//~--- non-JDK imports --------------------------------------------------------
import com.google.common.base.Function;
import com.google.common.base.Strings;
import com.google.common.collect.Lists;
import sonia.scm.repository.Repository;
import sonia.scm.repository.Tag;
import sonia.scm.util.Util;
//~--- JDK imports ------------------------------------------------------------
@@ -79,16 +82,55 @@ public class HgTagsCommand extends AbstractCommand implements TagsCommand
List<com.aragost.javahg.commands.Tag> tagList = cmd.includeTip().execute();
return Lists.transform(tagList,
new Function<com.aragost.javahg.commands.Tag, Tag>()
{
List<Tag> tags = null;
@Override
public Tag apply(com.aragost.javahg.commands.Tag f)
// check for empty repository
if (Util.isNotEmpty(tagList) && tagList.get(0).getChangeset() != null)
{
tags = Lists.transform(tagList, new TagTransformer());
}
if (tags == null)
{
tags = Lists.newArrayList();
}
return tags;
}
//~--- inner classes --------------------------------------------------------
/**
* Class description
*
*
* @version Enter version here..., 12/08/03
* @author Enter your name here...
*/
private static class TagTransformer
implements Function<com.aragost.javahg.commands.Tag, Tag>
{
/**
* Method description
*
*
* @param f
*
* @return
*/
@Override
public Tag apply(com.aragost.javahg.commands.Tag f)
{
Tag t = null;
if ((f != null) &&!Strings.isNullOrEmpty(f.getName())
&& (f.getChangeset() != null))
{
return new Tag(f.getName(), f.getChangeset().getNode());
t = new Tag(f.getName(), f.getChangeset().getNode());
}
});
return t;
}
}
}