From 0578156b721fa01c8c645b8f9625ecebdb6449e4 Mon Sep 17 00:00:00 2001
From: Maros Marsalek <mmarsale@cisco.com>
Date: Wed, 27 Jul 2016 11:05:51 +0200
Subject: HONEYCOMB-130: Separate v3po plugin from HC infra

Creating folders:
- common/
- infra/
- v3po/
- vpp-common/

Change-Id: I2c39e1b17e39e7c0f0628f44aa5fe08563fa06e4
Signed-off-by: Maros Marsalek <mmarsale@cisco.com>
---
 .../v3po/translate/util/ReflectionUtils.java       | 79 ++++++++++++++++++++++
 1 file changed, 79 insertions(+)
 create mode 100644 infra/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/ReflectionUtils.java

(limited to 'infra/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/ReflectionUtils.java')

diff --git a/infra/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/ReflectionUtils.java b/infra/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/ReflectionUtils.java
new file mode 100644
index 000000000..728c4f80d
--- /dev/null
+++ b/infra/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/ReflectionUtils.java
@@ -0,0 +1,79 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ *
+ * Licensed 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 io.fd.honeycomb.v3po.translate.util;
+
+import com.google.common.base.Optional;
+import java.lang.reflect.Method;
+import java.util.List;
+import javax.annotation.Nonnull;
+
+/**
+ * Reflection based utilities
+ */
+public final class ReflectionUtils {
+
+    private ReflectionUtils() {}
+
+    /**
+     * Find a specific method using reflection
+     *
+     * @param managedType Class object to find method in
+     * @param prefix Method name prefix used when finding the method. Case does not matter.
+     * @param paramTypes List of input argument types
+     * @param retType Return type
+     *
+     * @return Found method or Optional.absent() if there's no such method
+     */
+    @Nonnull
+    public static Optional<Method> findMethodReflex(@Nonnull final Class<?> managedType,
+                                                    @Nonnull final String prefix,
+                                                    @Nonnull final List<Class<?>> paramTypes,
+                                                    @Nonnull final Class<?> retType) {
+        for (Method method : managedType.getMethods()) {
+            if (isMethodMatch(prefix, paramTypes, retType, method)) {
+                return Optional.of(method);
+            }
+        }
+
+        return Optional.absent();
+    }
+
+    private static boolean isMethodMatch(final @Nonnull String prefix,
+                                         final @Nonnull List<Class<?>> paramTypes,
+                                         final @Nonnull Class<?> retType, final Method method) {
+        if (!method.getName().toLowerCase().startsWith(prefix.toLowerCase())) {
+            return false;
+        }
+
+        final Class<?>[] parameterTypes = method.getParameterTypes();
+        if (parameterTypes.length != paramTypes.size()) {
+            return false;
+        }
+
+        for (int i = 0; i < parameterTypes.length; i++) {
+            if (!parameterTypes[i].isAssignableFrom(paramTypes.get(i))) {
+                return false;
+            }
+        }
+
+        if (!method.getReturnType().equals(retType)) {
+            return false;
+        }
+
+        return true;
+    }
+}
-- 
cgit 1.2.3-korg