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Diffstat (limited to 'sca-java-1.x/branches/sca-java-1.5.1/modules/binding-corba-runtime/src/main/java/org/apache/tuscany/sca/binding/corba/impl/util/MethodFinder.java')
-rw-r--r-- | sca-java-1.x/branches/sca-java-1.5.1/modules/binding-corba-runtime/src/main/java/org/apache/tuscany/sca/binding/corba/impl/util/MethodFinder.java | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/sca-java-1.x/branches/sca-java-1.5.1/modules/binding-corba-runtime/src/main/java/org/apache/tuscany/sca/binding/corba/impl/util/MethodFinder.java b/sca-java-1.x/branches/sca-java-1.5.1/modules/binding-corba-runtime/src/main/java/org/apache/tuscany/sca/binding/corba/impl/util/MethodFinder.java new file mode 100644 index 0000000000..912d355641 --- /dev/null +++ b/sca-java-1.x/branches/sca-java-1.5.1/modules/binding-corba-runtime/src/main/java/org/apache/tuscany/sca/binding/corba/impl/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.impl.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; + } +} |