org.apache.wicket.model
Class PropertyModel
java.lang.Object
org.apache.wicket.model.AbstractPropertyModel
org.apache.wicket.model.PropertyModel
- All Implemented Interfaces:
- java.io.Serializable, IClusterable, IChainingModel, IDetachable, IModel, IObjectClassAwareModel, IPropertyReflectionAwareModel
public class PropertyModel
- extends AbstractPropertyModel
A PropertyModel is used to dynamically access a model using a "property expression". See
PropertyResolver
javadoc for allowed property expressions.
For example, take the following bean:
public class Person
{
private String name;
public String getName()
{
return name;
}
public void setName(String name)
{
this.name = name;
}
}
We could construct a label that dynamically fetches the name property of the given person object
like this:
Person person = getSomePerson();
...
add(new Label("myLabel", new PopertyModel(person, "name"));
Where 'myLabel' is the name of the component, and 'name' is the property expression to get the
name property.
In the same fashion, we can create form components that work dynamically on the given model
object. For instance, we could create a text field that updates the name property of a person
like this:
add(new TextField("myTextField", new PropertyModel(person, "name"));
Note that the property resolver by default provides access to private members and methods. If
guaranteeing encapsulation of the target objects is a big concern, you should consider using an
alternative implementation.
- Author:
- Chris Turner, Eelco Hillenius, Jonathan Locke
- See Also:
PropertyResolver
,
IModel
,
Model
,
LoadableDetachableModel
,
Serialized Form
Constructor Summary |
PropertyModel(java.lang.Object modelObject,
java.lang.String expression)
Construct with a wrapped (IModel) or unwrapped (non-IModel) object and a property expression
that works on the given model. |
Methods inherited from class org.apache.wicket.model.AbstractPropertyModel |
detach, getChainedModel, getObject, getObjectClass, getPropertyExpression, getPropertyField, getPropertyGetter, getPropertySetter, getTarget, onGetObject, onSetObject, setChainedModel, setObject |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
PropertyModel
public PropertyModel(java.lang.Object modelObject,
java.lang.String expression)
- Construct with a wrapped (IModel) or unwrapped (non-IModel) object and a property expression
that works on the given model.
- Parameters:
modelObject
- The model object, which may or may not implement IModelexpression
- Property expression for property access
toString
public java.lang.String toString()
- Overrides:
toString
in class AbstractPropertyModel
- See Also:
Object.toString()
propertyExpression
protected java.lang.String propertyExpression()
- Specified by:
propertyExpression
in class AbstractPropertyModel
- Returns:
- The property expression for the component
- See Also:
AbstractPropertyModel.propertyExpression()
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