From 95e2467e94e0e8739f3a2ed8d75611156b5156e2 Mon Sep 17 00:00:00 2001
From: mudlo <uds.mack@gmail.com>
Date: Wed, 10 Feb 2016 17:17:44 +0300
Subject: [PATCH] cache isElAvailable result value

---
 .../astefanutti/metrics/aspectj/MetricStrategyFactory.java | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/impl/src/main/java/io/astefanutti/metrics/aspectj/MetricStrategyFactory.java b/impl/src/main/java/io/astefanutti/metrics/aspectj/MetricStrategyFactory.java
index d9dd76a..45673e8 100644
--- a/impl/src/main/java/io/astefanutti/metrics/aspectj/MetricStrategyFactory.java
+++ b/impl/src/main/java/io/astefanutti/metrics/aspectj/MetricStrategyFactory.java
@@ -17,6 +17,8 @@
 
 /* package-private */ final class MetricStrategyFactory {
 
+    static Boolean isElAvailableCached;
+
     static MetricStrategy newInstance(Object object) {
         if (isElAvailable(object.getClass()))
             return new JavaxElMetricStrategy(object);
@@ -41,10 +43,15 @@ private static ClassLoader getClassLoader(Class<?> clazz) {
     }
 
     private static boolean isElAvailable(Class<?> clazz) {
+        if (isElAvailableCached != null) {
+            return isElAvailableCached;
+        }
         try {
             getClassLoader(clazz).loadClass("javax.el.ELProcessor");
+            isElAvailableCached = true;
             return true;
         } catch (ClassNotFoundException cause) {
+            isElAvailableCached = false;
             return false;
         }
     }