Author: ravn
Date: Sun Dec 21 20:08:06 2008
New Revision: 1258
Added:
slf4j/trunk/slf4j-ext/src/main/java/org/slf4j/instrumentation/ToStringHelper.java
Log:
Now is robust against exceptions in parameter rendering by
keeping a WeakHashMap of those classes which cannot be rendered.
Added:
slf4j/trunk/slf4j-ext/src/main/java/org/slf4j/instrumentation/ToStringHelper.java
==============================================================================
--- (empty file)
+++
slf4j/trunk/slf4j-ext/src/main/java/org/slf4j/instrumentation/ToStringHelper.java
Sun Dec 21 20:08:06 2008
@@ -0,0 +1,25 @@
+package org.slf4j.instrumentation;
+
+import java.util.Map;
+import java.util.WeakHashMap;
+
+public class ToStringHelper {
+
+ final static Map<Class, Object> unrenderableClasses = new
WeakHashMap<Class, Object>();
+
+ public static String render(Object o) {
+ if (o == null) {
+ return String.valueOf(o);
+ }
+ Class objectClass = o.getClass();
+ if (unrenderableClasses.containsKey(objectClass) == false) {
+ try {
+ return o.toString();
+ } catch (Exception e) {
+ Long now = new Long(System.currentTimeMillis());
+ unrenderableClasses.put(objectClass, now);
+ }
+ }
+ return o.getClass().getName() + "@" +
Integer.toHexString(o.hashCode());
+ }
+}
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