Cache resolved methods in FunctionDelegatesFlowableFunctionResolver

Author: filiphr

modules/flowable-engine-common/src/main/java/org/flowable/common/engine/impl/el/FunctionDelegatesFlowableFunctionResolver.java

@@ -14,6 +14,7 @@
 
 import java.lang.reflect.Method;
 import java.util.Collection;
+import java.util.HashMap;
 import java.util.LinkedHashMap;
 import java.util.Map;
 
@@ -25,6 +26,7 @@
 public class FunctionDelegatesFlowableFunctionResolver implements FlowableFunctionResolver {
 
     protected final Map<String, FlowableFunctionDelegate> functionDelegateMap;
+    protected final Map<String, Method> functionsCache = new HashMap<>();
 
     public FunctionDelegatesFlowableFunctionResolver(Collection<FlowableFunctionDelegate> functionDelegates) {
         functionDelegateMap = new LinkedHashMap<>();
@@ -41,7 +43,14 @@ public FunctionDelegatesFlowableFunctionResolver(Collection<FlowableFunctionDele
 
     @Override
     public Method resolveFunction(String prefix, String localName) throws NoSuchMethodException {
-        return resolveFunction(functionDelegateMap.get(prefix + ":" + localName), prefix, localName);
+        String functionName = prefix + ":" + localName;
+        if (functionsCache.containsKey(functionName)) {
+            return functionsCache.get(functionName);
+        }
+        Method functionMethod = resolveFunction(functionDelegateMap.get(functionName), prefix, localName);
+        functionsCache.put(functionName, functionMethod);
+        return functionMethod;
+
     }
 
     protected Method resolveFunction(FlowableFunctionDelegate functionDelegate, String prefix, String localName) throws NoSuchMethodException {