[jbossseam-issues] [JBoss JIRA] Created: (JBSEAM-665) Seam throws NPE when a component with a @Name is specified in components.xml
Mike Quilleash (JIRA)
jira-events at jboss.com
Wed Jan 17 07:45:52 EST 2007
Seam throws NPE when a component with a @Name is specified in components.xml
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Key: JBSEAM-665
URL: http://jira.jboss.com/jira/browse/JBSEAM-665
Project: JBoss Seam
Issue Type: Bug
Components: Core
Affects Versions: 1.1.0.GA
Environment: Win XP Pro
Java 1.5.0
Tomcat 6.0.7
Reporter: Mike Quilleash
Example line in components.xml
<component class="com.xxx.ElementDetail"/>
Class ElementDetail does not have a @Name (which it should) but class Initialization method installComponentFromXmlElement() throws an NPE on this line.
name = clazz.getAnnotation(Name.class).value();
Would be nice to check for the null condition and throw a more descriptive exception of the problem. e.g
Name nameAnnotation = clazz.getAnnotation( Name.class );
if ( nameAnnotation == null )
throw new IllegalArgumentException( "Component class " + class.getName() + " requires a @Name annotation or it's components.xml reference requires a name attribute" );
name = nameAnnotation.value();
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