weaver 2003/07/30 11:23:47 Added: portal/src/java/org/apache/jetspeed/util ArgUtil.java Log: Simple utility that, right now, simplfies testing for null arguments and throws IllegalArgumentException if there are nulls. Revision Changes Path 1.1 jakarta-jetspeed-2/portal/src/java/org/apache/jetspeed/util/ArgUtil.java Index: ArgUtil.java =================================================================== /* ==================================================================== * The Apache Software License, Version 1.1 * * Copyright (c) 2000-2003 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 "Apache" and "Apache Software Foundation" and * "Apache Jetspeed" 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", * "Apache Jetspeed", 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/>. */ package org.apache.jetspeed.util; /** * <p> * ArgUtil * </p> * * Misc. utilities for rudimentary argument validation * * @author <a href="mailto:[EMAIL PROTECTED]">Scott T. Weaver</a> * @version $Id: ArgUtil.java,v 1.1 2003/07/30 18:23:47 weaver Exp $ * */ public class ArgUtil { private static final String MSG_1 = "Argument \""; private static final String MSG_2 = "\" cannot be null for method "; /** * * @throws java.lang.IllegalArgumentException If ANY of the arguments are <code>null</code> * @param args array of arguments to validate as not nul * @param argNames array of arguments names, idexes should match with args. * @param methodName Name of method we are validating arguments for. */ public static void notNull(Object[] args, String[] argNames, String methodName) { for (int i = 0; i < args.length; i++) { Object arg = args[i]; if (arg == null) { StringBuffer buf = new StringBuffer(150); String argName = null; if (i < argNames.length) { argName = argNames[i]; } else { argName = String.valueOf(i); } buf.append(MSG_1 + argName + MSG_2 + methodName); throw new IllegalArgumentException(buf.toString()); } } } }
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