com.primix.tapestry.util.prop
Class MapHelper
java.lang.Object
|
+--com.primix.tapestry.util.prop.PropertyHelper
|
+--com.primix.tapestry.util.prop.MapHelper
- public class MapHelper
- extends PropertyHelper
A subclass of PropertyHelper
that allows values of
a java.util.Map
to be accessed as if they were JavaBean properties of
the java.util.Map
itself.
This requires that the keys of the Map
be valid
JavaBeans property names.
This class includes a static initializer that invokes
PropertyHelper.register(Class,Class)
.
TBD: Better error detection.
- Version:
- $Id: MapHelper.java,v 1.8 2001/10/08 18:28:40 hship Exp $
- Author:
- Howard Ship
Constructor Summary |
MapHelper(java.lang.Class beanClass)
|
Method Summary |
IPropertyAccessor |
getAccessor(java.lang.Object instance,
java.lang.String name)
Finds an accessor for the given property name. |
java.util.Collection |
getSyntheticPropertyNames(java.lang.Object instance)
Returns a Collection of the names of any synthetic properties. |
Methods inherited from class com.primix.tapestry.util.prop.PropertyHelper |
buildPropertyAccessors, forClass, forInstance, get, getAccessorPath, getAccessors, getPath, getPath, isReadable, isWritable, register, set, setPath, setPath, splitPropertyPath, toString |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
MapHelper
public MapHelper(java.lang.Class beanClass)
getAccessor
public IPropertyAccessor getAccessor(java.lang.Object instance,
java.lang.String name)
- Description copied from class:
PropertyHelper
- Finds an accessor for the given property name. Returns the
accessor if the class has the named property, or null
otherwise.
- Overrides:
getAccessor
in class PropertyHelper
- Following copied from class:
com.primix.tapestry.util.prop.PropertyHelper
- Parameters:
propertyName
- the simple property name of the property to
get.
getSyntheticPropertyNames
public java.util.Collection getSyntheticPropertyNames(java.lang.Object instance)
- Description copied from class:
PropertyHelper
- Returns a Collection of the names of any synthetic properties.
Subclasses should override this to interrogate the instance
in an appropriate way, so as to extract this list of properties.
For example, MapHelper
casts the instance to Map
,
and returns the map's keySet.
Subclasses may override this implementation without invoking it. This
implementation returns null.
- Overrides:
getSyntheticPropertyNames
in class PropertyHelper
- Since:
- 1.0.6