/*
 * 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.commons.lang;

import java.util.Arrays;

Thrown to indicate an incomplete argument to a method.
This exception supplements the standard IllegalArgumentException
by providing a more semantically rich description of the problem.
IncompleteArgumentException represents the case where a method takes
in a parameter that has a number of properties, some of which have not been set.
A case might be a search requirements bean that must have three properties set
in order for the method to run, but only one is actually set.
This exception would be used in place of
IllegalArgumentException, yet it still extends it.
public void foo(PersonSearcher search) {
  if (search.getSurname() == null ||
      search.getForename() == null ||
      search.getSex() == null) {
    throw new IncompleteArgumentException("search");
  }
  // do something with the searcher
}

Author:
Matthew Hawthorne
Since:
2.0
Version:
$Id: IncompleteArgumentException.java 437554 2006-08-28 06:21:41Z bayard $/**
 * <p>Thrown to indicate an incomplete argument to a method.
 * This exception supplements the standard <code>IllegalArgumentException</code>
 * by providing a more semantically rich description of the problem.</p>
 * 
 * <p><code>IncompleteArgumentException</code> represents the case where a method takes
 * in a parameter that has a number of properties, some of which have not been set.
 * A case might be a search requirements bean that must have three properties set
 * in order for the method to run, but only one is actually set.
 * This exception would be used in place of
 * <code>IllegalArgumentException</code>, yet it still extends it.</p>
 * 
 * <pre>
 * public void foo(PersonSearcher search) {
 *   if (search.getSurname() == null ||
 *       search.getForename() == null ||
 *       search.getSex() == null) {
 *     throw new IncompleteArgumentException("search");
 *   }
 *   // do something with the searcher
 * }
 * </pre>
 * 
 * @author Matthew Hawthorne
 * @since 2.0
 * @version $Id: IncompleteArgumentException.java 437554 2006-08-28 06:21:41Z bayard $
 */
public class IncompleteArgumentException extends IllegalArgumentException {

    
Required for serialization support.
See Also:
Serializable/**
     * Required for serialization support.
     * 
     * @see java.io.Serializable
     */
    private static final long serialVersionUID = 4954193403612068178L;

    
Instantiates with the specified description.
Params:
argName –  a description of the incomplete argument/**
     * <p>Instantiates with the specified description.</p>
     * 
     * @param argName  a description of the incomplete argument
     */
    public IncompleteArgumentException(String argName) {
        super(argName + " is incomplete.");
    }

    
Instantiates with the specified description.
Params:
argName –  a description of the incomplete argument
items –  an array describing the arguments missing/**
     * <p>Instantiates with the specified description.</p>
     * 
     * @param argName  a description of the incomplete argument
     * @param items  an array describing the arguments missing
     */
    public IncompleteArgumentException(String argName, String[] items) {
        super(
            argName
                + " is missing the following items: "
                + safeArrayToString(items));
    }

    
Converts an array to a string without throwing an exception.
Params:
array –  an array
Returns:
the array as a string/**
     * <p>Converts an array to a string without throwing an exception.</p>
     * 
     * @param array  an array
     * @return the array as a string
     */
    private static final String safeArrayToString(Object[] array) {
        return array == null ? null : Arrays.asList(array).toString();
    }

}