dlr 2002/08/27 12:20:42 Added: src/java/org/apache/xmlrpc Invoker.java Log: Refactored into its own class by Andrew Evers. Revision Changes Path 1.1 xml-rpc/src/java/org/apache/xmlrpc/Invoker.java Index: Invoker.java =================================================================== package org.apache.xmlrpc; /* * The Apache Software License, Version 1.1 * * * Copyright(c) 2002 The Apache Software Foundation. All rights * reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * 3. The end-user documentation included with the redistribution, * if any, must include the following acknowledgment: * "This product includes software developed by the * Apache Software Foundation(http://www.apache.org/)." * Alternately, this acknowledgment may appear in the software itself, * if and wherever such third-party acknowledgments normally appear. * * 4. The names "XML-RPC" and "Apache Software Foundation" must * not be used to endorse or promote products derived from this * software without prior written permission. For written * permission, please contact [EMAIL PROTECTED] * * 5. Products derived from this software may not be called "Apache", * nor may "Apache" appear in their name, without prior written * permission of the Apache Software Foundation. * * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES(INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * ==================================================================== * * This software consists of voluntary contributions made by many * individuals on behalf of the Apache Software Foundation. For more * information on the Apache Software Foundation, please see * <http://www.apache.org/>. */ import java.lang.reflect.InvocationTargetException; import java.lang.reflect.Method; import java.util.Vector; /** * Introspects handlers using Java Reflection to call methods matching * a XML-RPC call. * * @author <a href="mailto:[EMAIL PROTECTED]";>Hannes Wallnoefer</a> * @author <a href="mailto:[EMAIL PROTECTED]";>Daniel Rall</a> * @author <a href="mailto:[EMAIL PROTECTED]";>Andrew Evers</a> */ public class Invoker implements XmlRpcHandler { private Object invokeTarget; private Class targetClass; public Invoker(Object target) { invokeTarget = target; targetClass = (invokeTarget instanceof Class) ? (Class) invokeTarget : invokeTarget.getClass(); if (XmlRpc.debug) { System.out.println("Target object is " + targetClass); } } /** * main method, sucht methode in object, wenn gefunden dann aufrufen. */ public Object execute(String methodName, Vector params) throws Exception { // Array mit Classtype bilden, ObjectAry mit Values bilden Class[] argClasses = null; Object[] argValues = null; if (params != null) { argClasses = new Class[params.size()]; argValues = new Object[params.size()]; for (int i = 0; i < params.size(); i++) { argValues[i] = params.elementAt(i); if (argValues[i] instanceof Integer) { argClasses[i] = Integer.TYPE; } else if (argValues[i] instanceof Double) { argClasses[i] = Double.TYPE; } else if (argValues[i] instanceof Boolean) { argClasses[i] = Boolean.TYPE; } else { argClasses[i] = argValues[i].getClass(); } } } // Methode da ? Method method = null; // The last element of the XML-RPC method name is the Java // method name. int dot = methodName.lastIndexOf('.'); if (dot > -1 && dot + 1 < methodName.length()) { methodName = methodName.substring(dot + 1); } if (XmlRpc.debug) { System.out.println("Searching for method: " + methodName + " in class " + targetClass.getName()); for (int i = 0; i < argClasses.length; i++) { System.out.println("Parameter " + i + ": " + argValues[i] + " (" + argClasses[i] + ')'); } } try { method = targetClass.getMethod(methodName, argClasses); } // Wenn nicht da dann entsprechende Exception returnen catch(NoSuchMethodException nsm_e) { throw nsm_e; } catch(SecurityException s_e) { throw s_e; } // Our policy is to make all public methods callable except // the ones defined in java.lang.Object. if (method.getDeclaringClass() == Object.class) { throw new XmlRpcException(0, "Invoker can't call methods " + "defined in java.lang.Object"); } // invoke Object returnValue = null; try { returnValue = method.invoke(invokeTarget, argValues); } catch(IllegalAccessException iacc_e) { throw iacc_e; } catch(IllegalArgumentException iarg_e) { throw iarg_e; } catch(InvocationTargetException it_e) { if (XmlRpc.debug) { it_e.getTargetException().printStackTrace(); } // check whether the thrown exception is XmlRpcException Throwable t = it_e.getTargetException(); if (t instanceof XmlRpcException) { throw (XmlRpcException) t; } // It is some other exception throw new Exception(t.toString()); } if (returnValue == null && method.getReturnType() == Void.TYPE) { // Not supported by the spec. throw new IllegalArgumentException ("void return types for handler methods not supported"); } return returnValue; } }
