(no commit message)

[utils] / support / general / src / main / java / org / wamblee / reflection / ReflectionUtils.java

diff --git a/support/general/src/main/java/org/wamblee/reflection/ReflectionUtils.java b/support/general/src/main/java/org/wamblee/reflection/ReflectionUtils.java
index 87a0b8c5e7b47741721ac8cd182cdaacb99f1537..b5cfb2174edde641ac868cd744cb5210e8d7c63e 100644 (file)
--- a/support/general/src/main/java/org/wamblee/reflection/ReflectionUtils.java
+++ b/support/general/src/main/java/org/wamblee/reflection/ReflectionUtils.java
@@ -1,19 +1,48 @@
+/*
+ * Copyright 2005-2010 the original author or authors.
+ * 
+ * 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 org.wamblee.reflection;
 
+import java.lang.reflect.Field;
 import java.lang.reflect.Method;
-
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 
-
+/**
+ * Some utilities for reflection.
+ * 
+ * @author Erik Brakkee
+ */
 public class ReflectionUtils {
+
+    public static final List<Class> PRIMITIVE_WRAPPERS = createPrimitiveWrappers();
+
+    private static final List<Class> createPrimitiveWrappers() {
+        Class[] vals = { Boolean.class, Byte.class, Character.class,
+            Short.class, Integer.class, Long.class, Float.class, Double.class };
+        return Arrays.asList(vals);
+    }
+
     /**
-     * Wraps a type by the corresponding wrapper type if it is a primitive
-     * type.
-     * @param aClass Type to wrap.
+     * Wraps a type by the corresponding wrapper type if it is a primitive type.
+     * 
+     * @param aClass
+     *            Type to wrap.
      * @return Wrapped type for primitives or the provided argument value.
      */
     public static Class wrapIfNeeded(Class aClass) {
@@ -56,26 +85,32 @@ public class ReflectionUtils {
         return aClass;
     }
 
-    public static List<Method> getAllMethods(Class aClass) {
+    public static List<Method> getAllMethods(Class aClass,
+        Class... aExcludedClasses) {
+        if (aClass.isInterface()) {
+            throw new IllegalArgumentException(aClass.getName() +
+                " is not an interface.");
+        }
         Map<String, Method> found = new HashMap<String, Method>();
-        getAllMethods(aClass, found);
+        getAllMethods(aClass, found, Arrays.asList(aExcludedClasses));
 
         return new ArrayList<Method>(found.values());
     }
 
-    private static void getAllMethods(Class aClass, Map<String, Method> aFound) {
+    private static void getAllMethods(Class aClass, Map<String, Method> aFound,
+        List<Class> aExcludedClasses) {
         List<Method> declared = Arrays.asList(aClass.getDeclaredMethods());
 
         for (Method method : declared) {
             Method superMethod = aFound.get(method.getName());
 
             if (superMethod == null) {
-                // no superclass method
+                // no subclass method
                 aFound.put(method.getName(), method);
             } else {
-                // super class method. Check for override.
-                if (!Arrays.equals(superMethod.getParameterTypes(),
-                            method.getParameterTypes())) {
+                // subclass method. Check for override.
+                if (!Arrays.equals(superMethod.getParameterTypes(), method
+                    .getParameterTypes())) {
                     // parameters differ so this is a new method.
                     aFound.put(method.getName(), method);
                 }
@@ -84,8 +119,48 @@ public class ReflectionUtils {
 
         Class superClass = aClass.getSuperclass();
 
-        if (superClass != null) {
-            getAllMethods(superClass, aFound);
+        if (superClass != null && !aExcludedClasses.contains(superClass)) {
+            getAllMethods(superClass, aFound, aExcludedClasses);
+        }
+    }
+
+    public static List<Field> getAllFields(Class aClass,
+        Class... aExcludedClasses) {
+        if (aClass.isInterface()) {
+            throw new IllegalArgumentException(aClass.getName() +
+                " is an interface.");
+        }
+        List<Field> found = new ArrayList<Field>();
+        getAllFields(aClass, found, Arrays.asList(aExcludedClasses));
+
+        return found;
+    }
+
+    private static void getAllFields(Class aClass, List<Field> aFound,
+        List<Class> aExcludedClasses) {
+        List<Field> declared = Arrays.asList(aClass.getDeclaredFields());
+
+        for (Field field : declared) {
+            aFound.add(field);
+        }
+
+        Class superClass = aClass.getSuperclass();
+
+        if (superClass != null && !aExcludedClasses.contains(superClass)) {
+            getAllFields(superClass, aFound, aExcludedClasses);
+        }
+    }
+
+    /**
+     * Checks if a class is a primitive type or wrapper type.
+     * 
+     * @param aClass
+     * @return
+     */
+    public static boolean isPrimitive(Class aClass) {
+        if (aClass.isPrimitive()) {
+            return true;
         }
+        return PRIMITIVE_WRAPPERS.contains(aClass);
     }
 }