diff options
Diffstat (limited to 'framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/util/ReflectUtil.java')
| -rw-r--r-- | framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/util/ReflectUtil.java | 212 |
1 files changed, 0 insertions, 212 deletions
diff --git a/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/util/ReflectUtil.java b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/util/ReflectUtil.java deleted file mode 100644 index 88b7911e..00000000 --- a/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/util/ReflectUtil.java +++ /dev/null @@ -1,212 +0,0 @@ -/* - * 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.tools.ant.util; - -import java.lang.reflect.Constructor; -import java.lang.reflect.Field; -import java.lang.reflect.InvocationTargetException; -import java.lang.reflect.Method; - -import org.apache.tools.ant.BuildException; - -/** - * Utility class to handle reflection on java objects. - * The class contains static methods to call reflection - * methods, catch any exceptions, converting them - * to BuildExceptions. - */ -// CheckStyle:FinalClassCheck OFF - backward compatible -public class ReflectUtil { - - /** private constructor */ - private ReflectUtil() { - } - - /** - * Create an instance of a class using the constructor matching - * the given arguments. - * @since Ant 1.8.0 - */ - public static <T> T newInstance(Class<T> ofClass, - Class<?>[] argTypes, - Object[] args) { - try { - Constructor<T> con = ofClass.getConstructor(argTypes); - return con.newInstance(args); - } catch (Exception t) { - throwBuildException(t); - return null; // NotReached - } - } - - /** - * Call a method on the object with no parameters. - * @param obj the object to invoke the method on. - * @param methodName the name of the method to call - * @return the object returned by the method - */ - public static Object invoke(Object obj, String methodName) { - try { - Method method; - method = obj.getClass().getMethod( - methodName, (Class[]) null); - return method.invoke(obj, (Object[]) null); - } catch (Exception t) { - throwBuildException(t); - return null; // NotReached - } - } - - /** - * Call a method on the object with no parameters. - * Note: Unlike the invoke method above, this - * calls class or static methods, not instance methods. - * @param obj the object to invoke the method on. - * @param methodName the name of the method to call - * @return the object returned by the method - */ - public static Object invokeStatic(Object obj, String methodName) { - try { - Method method; - method = ((Class<?>) obj).getMethod( - methodName, (Class[]) null); - return method.invoke(obj, (Object[]) null); - } catch (Exception t) { - throwBuildException(t); - return null; // NotReached - } - } - - /** - * Call a method on the object with one argument. - * @param obj the object to invoke the method on. - * @param methodName the name of the method to call - * @param argType the type of argument. - * @param arg the value of the argument. - * @return the object returned by the method - */ - public static Object invoke( - Object obj, String methodName, Class<?> argType, Object arg) { - try { - Method method; - method = obj.getClass().getMethod( - methodName, new Class[] {argType}); - return method.invoke(obj, new Object[] {arg}); - } catch (Exception t) { - throwBuildException(t); - return null; // NotReached - } - } - - /** - * Call a method on the object with two argument. - * @param obj the object to invoke the method on. - * @param methodName the name of the method to call - * @param argType1 the type of the first argument. - * @param arg1 the value of the first argument. - * @param argType2 the type of the second argument. - * @param arg2 the value of the second argument. - * @return the object returned by the method - */ - public static Object invoke( - Object obj, String methodName, Class<?> argType1, Object arg1, - Class<?> argType2, Object arg2) { - try { - Method method; - method = obj.getClass().getMethod( - methodName, new Class[] {argType1, argType2}); - return method.invoke(obj, new Object[] {arg1, arg2}); - } catch (Exception t) { - throwBuildException(t); - return null; // NotReached - } - } - - /** - * Get the value of a field in an object. - * @param obj the object to look at. - * @param fieldName the name of the field in the object. - * @return the value of the field. - * @throws BuildException if there is an error. - */ - public static Object getField(Object obj, String fieldName) - throws BuildException { - try { - Field field = obj.getClass().getDeclaredField(fieldName); - field.setAccessible(true); - return field.get(obj); - } catch (Exception t) { - throwBuildException(t); - return null; // NotReached - } - } - - /** - * A method to convert an invocationTargetException to - * a buildexception and throw it. - * @param t the invocation target exception. - * @throws BuildException the converted exception. - */ - public static void throwBuildException(Exception t) - throws BuildException { - throw toBuildException(t); - } - - /** - * A method to convert an invocationTargetException to - * a buildexception. - * @param t the invocation target exception. - * @return the converted exception. - * @since ant 1.7.1 - */ - public static BuildException toBuildException(Exception t) { - if (t instanceof InvocationTargetException) { - Throwable t2 = ((InvocationTargetException) t) - .getTargetException(); - if (t2 instanceof BuildException) { - return (BuildException) t2; - } - return new BuildException(t2); - } else { - return new BuildException(t); - } - } - - /** - * A method to test if an object responds to a given - * message (method call) - * @param o the object - * @param methodName the method to check for - * @return true if the object has the method. - * @throws BuildException if there is a problem. - */ - public static boolean respondsTo(Object o, String methodName) - throws BuildException { - try { - Method[] methods = o.getClass().getMethods(); - for (int i = 0; i < methods.length; i++) { - if (methods[i].getName().equals(methodName)) { - return true; - } - } - return false; - } catch (Exception t) { - throw toBuildException(t); - } - } -} |