Commons Collections僥楼永芝?膨? - 園殻秘壇利
作者 佚名技术
来源 NET编程
浏览
发布时间 2012-06-16
| private BeanMap owner;//侭奉議Map
protected MyMapEntry( BeanMap owner, Object key, Object value ) {
super( key, value );
this.owner = owner;
}
public Object setValue(Object value) {
Object key = getKey();
Object oldValue = owner.get( key );
owner.put( key, value );
Object newValue = owner.get( key );
super.setValue( newValue );
return oldValue;
}
}
protected Object[] createWriteMethodArguments( Method method, Object value ) throws IllegalAccessException, ClassCastException
{
try
{
if ( value != null )
{
Class[] types = method.getParameterTypes();//setXXX圭隈議歌方窃侏
if ( types != null && types.length > 0 )
{
Class paramType = types[0];
if ( ! paramType.isAssignableFrom( value.getClass() ) )
{
value = convertType( paramType, value );//委仟歌方廬算葎setXXX圭隈議歌方窃侏
}
}
}
Object[] answer = { value };
return answer;
}
catch ( InvocationTargetException e ) {
logInfo( e );
throw new IllegalArgumentException( e.getMessage() );
}
catch ( InstantiationException e ) {
logInfo( e );
throw new IllegalArgumentException( e.getMessage() );
}
}
protected Object convertType( Class newType, Object value )
throws InstantiationException, IllegalAccessException, IllegalArgumentException, InvocationTargetException {
// try call constructor
Class[] types = { value.getClass() };
try {//晦編喘揮匯倖歌方議更夛痕方序佩廬算
Constructor constructor = newType.getConstructor( types );
Object[] arguments = { value };
return constructor.newInstance( arguments );
}
catch ( NoSuchMethodException e ) {
// try using the transformers
Transformer transformer = getTypeTransformer( newType );//資函辛喘議transformer
if ( transformer != null ) {
return transformer.transform( value );//廬算窃侏
}
return value;
}
}
protected Transformer getTypeTransformer( Class aType ) {
return (Transformer) defaultTransformers.get( aType );
}
} |
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