TODO moved out to readme.txt which contains latest interesting issues - they should become JIRAs when the dust has settled

org.springframework.expression/readme.txt

@@ -0,0 +1,13 @@
+List of outstanding things to think about - turn into JIRAs once distilled to a core set of issues
+
+High Importance
+
+- In the resolver/executor model we cache executors.  They are currently recorded in the AST and so if the user chooses to evaluate an expression
+in a different context then the stored executor may be incorrect.  It may harmless 'fail' which would cause us to retrieve a new one, but 
+can it do anything malicious? In which case we either need to forget them when the context changes or store them elsewhere.  Should caching be
+something that can be switched on/off by the context? (shouldCacheExecutors() on the interface?)
+
+Low Importance
+
+- For the ternary operator, should isWritable() return true/false depending on evaluating the condition and check isWritable() of whichever branch it
+would have taken?  At the moment ternary expressions are just considered NOT writable.

org.springframework.expression/src/main/java/org/springframework/expression/spel/ast/MethodReference.java

@@ -29,9 +29,9 @@ import org.springframework.expression.EvaluationContext;
 import org.springframework.expression.EvaluationException;
 import org.springframework.expression.MethodExecutor;
 import org.springframework.expression.MethodResolver;
+import org.springframework.expression.spel.ExpressionState;
 import org.springframework.expression.spel.SpelException;
 import org.springframework.expression.spel.SpelMessages;
-import org.springframework.expression.spel.ExpressionState;
 import org.springframework.expression.spel.internal.Utils;
 import org.springframework.expression.spel.processors.AverageProcessor;
 import org.springframework.expression.spel.processors.CountProcessor;
@@ -48,7 +48,7 @@ public class MethodReference extends SpelNode {
 	private static Map<String, DataProcessor> registeredProcessers = new HashMap<String, DataProcessor>();
 
 	private final String name;
-	private MethodExecutor fastInvocationAccessor; // TODO should this be nulled if executing in a different context or is it OK to keep?
+	private MethodExecutor fastInvocationAccessor;
 
 	static {
 		registeredProcessers.put("count", new CountProcessor());
@@ -309,7 +309,8 @@ public class MethodReference extends SpelNode {
 					if (cause instanceof SpelException) {
 						throw (SpelException) cause;
 					} else {
-						throw new SpelException(cause, SpelMessages.PROBLEM_LOCATING_METHOD, name, contextObject.getClass());
+						throw new SpelException(cause, SpelMessages.PROBLEM_LOCATING_METHOD, name, contextObject
+								.getClass());
 					}
 				}
 			}