1 files changed, 97 insertions, 0 deletions
diff --git a/sca-java-2.x/tags/2.0.1-RC1/modules/binding-corba-runtime/src/main/java/org/apache/tuscany/sca/binding/corba/provider/util/MethodFinder.java b/sca-java-2.x/tags/2.0.1-RC1/modules/binding-corba-runtime/src/main/java/org/apache/tuscany/sca/binding/corba/provider/util/MethodFinder.java
new file mode 100644
index 0000000000..f9facac0cc
--- /dev/null
+++ b/sca-java-2.x/tags/2.0.1-RC1/modules/binding-corba-runtime/src/main/java/org/apache/tuscany/sca/binding/corba/provider/util/MethodFinder.java
@@ -0,0 +1,97 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+
+package org.apache.tuscany.sca.binding.corba.provider.util;
+
+import java.lang.reflect.Method;
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * @version $Rev$ $Date$
+ * Utility for finding method in given class.
+ */
+public class MethodFinder {
+
+    private static Map<Class<?>, Class<?>> boxingMapping;
+
+    static {
+        boxingMapping = new HashMap<Class<?>, Class<?>>();
+        boxingMapping.put(boolean.class, Boolean.class);
+        boxingMapping.put(byte.class, Byte.class);
+        boxingMapping.put(short.class, Short.class);
+        boxingMapping.put(char.class, Character.class);
+        boxingMapping.put(int.class, Integer.class);
+        boxingMapping.put(long.class, Long.class);
+        boxingMapping.put(float.class, Float.class);
+        boxingMapping.put(double.class, Double.class);
+    }
+
+    /**
+     * Converts primitive class to its object equivalent.
+     * 
+     * @param parameter class to convert
+     * @return object equivalent for primitive type. If parameter wasn't
+     *         primitive then returns parameter.
+     */
+    private static Class<?> normalizePrimitive(Class<?> parameter) {
+        Class<?> result = boxingMapping.get(parameter);
+        if (result != null) {
+            return result;
+        } else {
+            // not a primitive - no need to normalize
+            return parameter;
+        }
+    }
+
+    /**
+     * Finds appropriate method. This method ignores difference between
+     * primitive types and theirs object equivalents. Ie. if we want to find
+     * method "get" in java.util.List with only one parameter, which type is
+     * Integer then we'll obtain method get(int).
+     * 
+     * @param forClass class which possibly contains desired method 
+     * @param methodName desired methods name
+     * @param parameterTypes desired methods parameter types
+     * @return desired method, if no method was found then null will be returned
+     */
+    public static Method findMethod(Class<?> forClass, String methodName, Class<?>[] parameterTypes) {
+        Method[] methods = forClass.getMethods();
+        for (int i = 0; i < methods.length; i++) {
+            if (methods[i].getName().equals(methodName)) {
+                Class<?>[] methodPTypes = methods[i].getParameterTypes();
+                if (methodPTypes.length == parameterTypes.length) {
+                    boolean parameterMatch = true;
+                    for (int j = 0; j < methodPTypes.length; j++) {
+                        Class<?> nMethodPType = normalizePrimitive(methodPTypes[j]);
+                        Class<?> nParameterType = normalizePrimitive(parameterTypes[j]);
+                        if (!nMethodPType.equals(nParameterType)) {
+                            parameterMatch = false;
+                            break;
+                        }
+                    }
+                    if (parameterMatch) {
+                        return methods[i];
+                    }
+                }
+            }
+        }
+        return null;
+    }
+}