dion 2003/07/30 21:20:22
Modified: src/java/org/apache/maven/jelly/tags BaseTagSupport.java
Log:
Add a way of easily checking attributes for values
Revision Changes Path
1.6 +18 -0 maven/src/java/org/apache/maven/jelly/tags/BaseTagSupport.java
Index: BaseTagSupport.java
===================================================================
RCS file: /home/cvs/maven/src/java/org/apache/maven/jelly/tags/BaseTagSupport.java,v
retrieving revision 1.5
retrieving revision 1.6
diff -u -r1.5 -r1.6
--- BaseTagSupport.java 27 Jul 2003 23:33:57 -0000 1.5
+++ BaseTagSupport.java 31 Jul 2003 04:20:22 -0000 1.6
@@ -56,6 +56,8 @@
* ====================================================================
*/
+import org.apache.commons.jelly.JellyTagException;
+import org.apache.commons.jelly.MissingAttributeException;
import org.apache.commons.jelly.TagSupport;
import org.apache.maven.jelly.MavenJellyContext;
import org.apache.maven.Maven;
@@ -76,5 +78,21 @@
public Maven getMaven()
{
return getMavenContext().getProject().getMaven();
+ }
+
+ /**
+ * Check a given 'attribute' has a value and throw the corresponding
+ * exception if it doesn't
+ *
+ * @param attribute the attribute to check
+ * @param message the message to pass in with the exception
+ * @throws MissingAttributeException when the attribute is null
+ */
+ protected void checkAttribute(Object attribute, String message) throws
JellyTagException
+ {
+ if (attribute == null)
+ {
+ throw new MissingAttributeException(message);
+ }
}
}
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