commit 04063e5afacfa876446857b8433d2f5445bdecf2
Author: Roger Leigh <r.leigh@dundee.ac.uk>
Date:   Tue May 7 10:28:25 2013 +0100

    Improve performance of Location constructor, by avoiding exception throwing when path is not an URL

diff --git a/components/common/src/loci/common/Location.java b/components/common/src/loci/common/Location.java
index 5c13302..dd65cb0 100644
--- a/components/common/src/loci/common/Location.java
+++ b/components/common/src/loci/common/Location.java
@@ -102,11 +102,17 @@ public class Location {
 
   public Location(String pathname) {
     LOGGER.trace("Location({})", pathname);
-    try {
-      url = new URL(getMappedId(pathname));
-    }
-    catch (MalformedURLException e) {
-      LOGGER.trace("Location is not a URL", e);
+    if (pathname.contains("://")) {
+      // Avoid expensive exception handling in case when path is obviously not an URL
+      try {
+        url = new URL(getMappedId(pathname));
+      }
+      catch (MalformedURLException e) {
+        LOGGER.trace("Location is not a URL", e);
+        isURL = false;
+      }
+    } else {
+      LOGGER.trace("Location is not a URL");
       isURL = false;
     }
     if (!isURL) file = new File(getMappedId(pathname));