public class ELPropertyContentProvider extends PageFlowScopeAdapter implements Serializable, IUpdateableContentProvider
IUpdateableContentProvider implementation that wraps any object and accesses its properties
using faces' expression language.
class Item {
public int getId();
public String getName();
};
Item item = new Item("1", "First Item");
IUpdateableContentProvider provider = new ELPropertyContentProvider(item);
Integer itemId = (Integer)provider.getValue("id"); // returns 1
String itemName = (String)provider.getValue("name"); // return "First Item"
provider.setValue("name", "The new name"); // update the items name property
| Modifier and Type | Field and Description |
|---|---|
protected Object |
m_o
Wrapped object
|
fExpireWithPageFlow| Constructor and Description |
|---|
ELPropertyContentProvider()
Default constructor.
|
ELPropertyContentProvider(Object o)
Initializes with the given object
|
| Modifier and Type | Method and Description |
|---|---|
Object |
getObject()
Returns currently wrapped object
|
Object[] |
getPropertyKeys()
Returns list of properties supported by this content provider.
|
Class<?> |
getType(Object propertyKey)
Returns java type of the given property
|
Object |
getValue(Object propertyKey)
Returns value of the given property
|
boolean |
hasProperty(Object propertyKey)
Checks if the given property is supported by this content provider
|
boolean |
isReadOnly(Object propertyKey)
Returns true if the given property is readonly.
|
void |
setObject(Object o)
Sets an object to wrap.
|
void |
setValue(Object propertyKey,
Object value)
Sets new value of the given property
|
String |
toString()
Returns string representation of content.
|
getExpireWithPageFlow, setExpireWithPageFlowprotected Object m_o
public ELPropertyContentProvider()
setObject(Object) must be called before use.public ELPropertyContentProvider(Object o)
o - any object to adaptpublic String toString()
IContentProvidertoString in interface IContentProvidertoString in class ObjectString representation of the wrapped contentpublic Object[] getPropertyKeys()
IContentProviderObject[0],
never null.getPropertyKeys in interface IContentProviderString or Integerpublic Class<?> getType(Object propertyKey) throws PropertyNotFoundException
IContentProvidergetType in interface IContentProviderpropertyKey - the property key of type String or IntegerClassPropertyNotFoundException - if property is not supportedpublic Object getValue(Object propertyKey) throws ELException, PropertyNotFoundException
IContentProvidergetValue in interface IContentProviderpropertyKey - the property key of type String or IntegernullPropertyNotFoundException - if property is not supportedELExceptionpublic boolean hasProperty(Object propertyKey)
IContentProviderhasProperty in interface IContentProviderpropertyKey - property key of type String or Integertrue if property is supportedpublic boolean isReadOnly(Object propertyKey) throws ELException, PropertyNotFoundException
IUpdateableContentProviderReturns true if the given property is readonly. If it is readonly, IUpdateableContentProvider.setValue(Object, Object) will
definitely fail.
isReadOnly in interface IUpdateableContentProviderpropertyKey - property key of type String or IntegerPropertyNotFoundExceptionELExceptionpublic void setValue(Object propertyKey, Object value) throws ELException, PropertyNotFoundException
IUpdateableContentProviderSets new value of the given property
setValue in interface IUpdateableContentProviderpropertyKey - property key of type String or Integervalue - new property valuePropertyNotFoundException - if property is not foundELExceptionpublic void setObject(Object o)
public Object getObject()