数据库中数据项变化不定，如何设计Java Beans（4）

import junit.framework.TestCase;
import junit.framework.Test;
import junit.framework.TestSuite;

public class testpropertyUtils extends TestCase {
public propertyUtilsTestCase(String name) {
super(name);
}
/**
* 实例化TestBean
*/
public void setUp() {
bean = new TestBean();
}
/**
* 测试索引属性
*/
public void testSetIndexedValues() {
Object value = null;
//测试数组索引属性
try {
propertyUtils.setproperty(bean,
"dupproperty(0)",
"New 0");
value =
propertyUtils.getproperty(bean,
"dupproperty(0) ");
assertNotNull("Returned new value 0", value);
assertTrue("Returned String new value 0",
value instanceof String);
assertEquals("Returned correct new value 0", "New 0",
(String) value);
} catch (Throwable t) {
fail("Threw " + t);
}
//测试List索引属性
try {
propertyUtils.setproperty(bean,
"listIndexed(0) " ,
"New value");
value =
propertyUtils.getproperty(bean,
" listIndexed(0)");
assertNotNull("Returned new value 0", value);
assertTrue("Returned String new value 0",
value instanceof String);
assertEquals("Returned correct new value 0", " New value ",
(String) value);
} catch (Throwable t) {
fail("Threw " + t);
}
}
/**
* 测试映射属性
*/
public void testSetMappedValues() {

Object value = null;
try {
propertyUtils.setproperty(bean,
"hash(key1)",
"New 0");
value =
propertyUtils.getproperty(bean,
"hash(key1)");
assertNotNull("Returned new value 0", value);
assertTrue("Returned String new value 0",
value instanceof String);
assertEquals("Returned correct new value 0", "New 0",
(String) value);
} catch (Throwable t) {
fail("Threw " + t);
}
}
/**
* 测试嵌套属性
*/
public void testNestedValues() {
….
}
}

public void setDupproperty(int index, String value) {
System.out.println("setDupproperty index value");

this.dupproperty[index] = value;
}

public void setDupproperty(String dupproperty[]) {
System.out.println("setDupproperty du[]");
this.dupproperty = dupproperty;
}
//这是一个索引属性,除了支持"[]"型的数组属性外，还支持申明为List类型的属性
/**
* A List property accessed as an indexed property.
*/
private static List listIndexed = new ArrayList();

static {
listIndexed.add("String 0");
listIndexed.add("String 1");
listIndexed.add("String 2");
listIndexed.add("String 3");
listIndexed.add("String 4");
}

public List getListIndexed() {
return (listIndexed);
}

//嵌套属性
private TestBean nested = null;
public TestBean getNested() {
System.out.println("getNested");
if (nested == null)
nested = new TestBean();
return (nested);
}

//这是一个映射属性,必须申明为Map类型，propertyUtils只需要该属性的一个获取器操作就能
//使用get/setMappedproperty方法访问和设置键和值
private Map hash = null;
public Map getHash(){
System.out.println("getHash");
if (hash == null) {
hash = new HashMap();
hash.put("First Key", "First Value");
hash.put("Second Key", "Second Value");
}
return (hash);
}
//下面的方法对在common-beanutils 1.6.1中propertyUtils
　　的getMappedproperty方法不起作用,中不调用这些方法，
//而且不支持嵌套的映射属性
//propertyUtils.setMappedproperty(bean,
　　"nested.hash(Fifth Key)", "Fifth Value"); don't work!!

public Object getHash(String Key){
System.out.println("getHash Key");
return hash.get(Key);
}

public void setHash(String Key,Object value){
System.out.println("setHash Key value ");
hash.put(Key,value);
}
//这是一个简单属性，想在propertyUtils中修改必须有设置器操作
private String sample = null;
public String getSample() {
return sample;
}
public void setSample(String sample){
this.sample = sample;
}
}