[Swift-commit] r3467 - trunk/src/org/griphyn/vdl/mapping/file

[noreply at svn.ci.uchicago.edu]

Author: hategan
Date: 2010-07-23 23:22:18 -0500 (Fri, 23 Jul 2010)
New Revision: 3467

Modified:
   trunk/src/org/griphyn/vdl/mapping/file/ArrayFileMapper.java
Log:
user friendly error vs. NPE

Modified: trunk/src/org/griphyn/vdl/mapping/file/ArrayFileMapper.java
===================================================================
--- trunk/src/org/griphyn/vdl/mapping/file/ArrayFileMapper.java	2010-07-24 04:16:02 UTC (rev 3466)
+++ trunk/src/org/griphyn/vdl/mapping/file/ArrayFileMapper.java	2010-07-24 04:22:18 UTC (rev 3467)
@@ -21,6 +21,9 @@
 	public Collection existing() {
 		List l = new ArrayList();
 		DSHandle dn = (DSHandle) PARAM_FILES.getRawValue(this);
+		if (dn == null) {
+		    throw new RuntimeException("Missing 'files' mapper attribute");
+		}
 		Map m = dn.getArrayValue();
 		Set s = m.keySet();
 		Iterator i = s.iterator();
@@ -32,7 +35,6 @@
 	}
 
 	public PhysicalFormat map(Path path) {
-
 		if (path.isEmpty()) {
 			throw new IllegalArgumentException("Path cannot be empty");
 		}