/*
* The Kuali Financial System, a comprehensive financial management system for higher education.
*
* Copyright 2005-2014 The Kuali Foundation
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.kuali.kfs.module.purap.util;
import java.beans.Beans;
import java.lang.reflect.InvocationTargetException;
import java.util.ArrayList;
/**
*
* This class is setup to allow an argument to a created ArrayList (it could be a
* possible extension to the other ArrayList
*/
public class PurApArrayList extends ArrayList {
// private static final long serialVersionUID = 6238521951259126730L;
private final Class listObjectType;
private final Class[] argumentClasses;
private final Object[] arguments;
/**
*
* Default Constructor
* @param listObjectType the class
*/
public PurApArrayList(Class listObjectType) {
this(listObjectType, null, null);
}
/**
*
* Constructor
* @param listObjectType the object type
* @param methodClasses classes
* @param methodArguments arguments
*/
public PurApArrayList(Class listObjectType, Class[] methodClasses, Object[] methodArguments) {
super();
Class[] assignArgumentClasses = null;
Object[] assignArguments = null;
if (listObjectType == null) {
throw new RuntimeException("class type for list is required.");
}
// attempt to get an instance of the class to check it has a visible default constructor
if (methodClasses == null && methodArguments == null) {
try {
Object listObj = listObjectType.newInstance();
}
catch (InstantiationException e) {
throw new RuntimeException("unable to get instance of class" + listObjectType.getName());
}
catch (IllegalAccessException e) {
throw new RuntimeException("unable to get instance of class" + listObjectType.getName());
}
}
else {
try {
listObjectType.getConstructor(methodClasses).newInstance(methodArguments);
}
catch (SecurityException e) {
throw new RuntimeException("unable to get instance of class" + listObjectType.getName());
}
catch (NoSuchMethodException e) {
throw new RuntimeException("unable to get instance of class" + listObjectType.getName());
}
catch (IllegalArgumentException e) {
throw new RuntimeException("unable to get instance of class" + listObjectType.getName());
}
catch (InstantiationException e) {
throw new RuntimeException("unable to get instance of class" + listObjectType.getName());
}
catch (IllegalAccessException e) {
throw new RuntimeException("unable to get instance of class" + listObjectType.getName());
}
catch (InvocationTargetException e) {
throw new RuntimeException("unable to get instance of class" + listObjectType.getName());
}
assignArgumentClasses = methodClasses;
assignArguments = methodArguments;
}
this.listObjectType = listObjectType;
this.argumentClasses = assignArgumentClasses;
this.arguments = assignArguments;
}
/**
* @see java.util.List#add(int, java.lang.Object)
*/
public void add(int index, Object element) {
checkType(element);
super.add(index, element);
}
/**
* @see java.util.Collection#add(java.lang.Object)
*/
public boolean add(Object o) {
checkType(o);
return super.add(o);
}
/**
* @see java.util.List#get(int)
*/
public Object get(int index) {
growArray(index);
return super.get(index);
}
/**
* @see java.util.List#set(int, java.lang.Object)
*/
public Object set(int index, Object element) {
growArray(index);
return super.set(index, element);
}
/**
* Adds new instances of type listObjectType to the arraylist until the size of the list is greater than the index required.
* @param index the index to grow to
*/
private void growArray(int index) {
if (index < 0) {
throw new IndexOutOfBoundsException("Index must be positive.");
}
// ensureCapacity(index); // Increments modCount
while (size() <= index) {
try {
if (this.arguments == null && this.argumentClasses == null) {
super.add(listObjectType.newInstance());
}
else {
super.add(listObjectType.getConstructor(argumentClasses).newInstance(arguments));
}
}
catch (InstantiationException e) {
throw new RuntimeException("Cannot get new instance of class " + listObjectType.getName());
}
catch (IllegalAccessException e) {
throw new RuntimeException("Cannot get new instance of class " + listObjectType.getName());
}
catch (IllegalArgumentException e) {
throw new RuntimeException("Cannot get new instance of class " + listObjectType.getName());
}
catch (SecurityException e) {
throw new RuntimeException("Cannot get new instance of class " + listObjectType.getName());
}
catch (InvocationTargetException e) {
throw new RuntimeException("Cannot get new instance of class " + listObjectType.getName());
}
catch (NoSuchMethodException e) {
throw new RuntimeException("Cannot get new instance of class " + listObjectType.getName());
}
}
}
/**
* Checks the type of an element matches the underlying list type.
*/
private void checkType(Object element) {
if (element != null) {
if (!Beans.isInstanceOf(element, listObjectType)) {
throw new RuntimeException("element is not of correct type.");
}
}
}
public Class getListObjectType() {
return listObjectType;
}
}