Package org.apache.tapestry5.internal.bindings

Class PropBinding

java.lang.Object

org.apache.tapestry5.ioc.BaseLocatable

org.apache.tapestry5.internal.bindings.AbstractBinding

org.apache.tapestry5.internal.bindings.PropBinding

All Implemented Interfaces:

Binding, Binding2, AnnotationProvider, Locatable, InternalPropBinding

public class PropBinding
extends AbstractBinding
implements InternalPropBinding

Base class for bindings created by the PropBindingFactory. A subclass of this is created at runtime.

Constructor Summary

Constructors

Constructor	Description
PropBinding(Location location, Object root, PropertyConduit conduit, String expression, String toString)

Method Summary

Modifier and Type	Method	Description
Object	get()	The default implementation of get() will throw a TapestryException (binding is write only).
<T extends Annotation> T	getAnnotation(Class<T> annotationClass)	Always returns null.
Type	getBindingGenericType()	Get the generic type from the underlying property
Class	getBindingType()	Returns the actual class, by invoking Binding.get().
String	getExpression()
String	getPropertyName()	Returns the name of the property, if exists.
boolean	isInvariant()	Almost always returns false, unless the conduit provides the Invariant annotation.
void	set(Object value)	Updates the current value.
String	toString()

Methods inherited from class org.apache.tapestry5.ioc.BaseLocatable

getLocation

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

PropBinding

public PropBinding(Location location,
                   Object root,
                   PropertyConduit conduit,
                   String expression,
                   String toString)

Method Detail

get

public Object get()

The default implementation of get() will throw a TapestryException (binding is write only). The fabricated subclass may override this method (as well as set()).

Specified by:

get in interface Binding

set

public void set(Object value)

Description copied from interface: Binding

Updates the current value. Most types of bindings are read-only, and this method will throw a runtime exception. It is the caller's responsibility to ensure that the value passed in is of the appropriate type.

Specified by:

set in interface Binding

Overrides:

set in class AbstractBinding

toString

public String toString()

Overrides:

toString in class Object

isInvariant

public boolean isInvariant()

Almost always returns false, unless the conduit provides the Invariant annotation.

Specified by:

isInvariant in interface Binding

Overrides:

isInvariant in class AbstractBinding

getBindingType

public Class getBindingType()

Description copied from class: AbstractBinding

Returns the actual class, by invoking Binding.get(). Subclasses may override this method to work more efficiently (say, when the binding type is known statically).

Specified by:

getBindingType in interface Binding

Overrides:

getBindingType in class AbstractBinding

getBindingGenericType

public Type getBindingGenericType()

Get the generic type from the underlying property

Specified by:

getBindingGenericType in interface Binding2

Overrides:

getBindingGenericType in class AbstractBinding

See Also:

PropertyConduit2.getPropertyGenericType()

getAnnotation

public <T extends Annotation> T getAnnotation(Class<T> annotationClass)

Description copied from class: AbstractBinding

Always returns null. Bindings that provide access to a method or field will override this method to return the appropriate annotation.

Specified by:

getAnnotation in interface AnnotationProvider

Overrides:

getAnnotation in class AbstractBinding

Parameters:

annotationClass - used to select the annotation to return

Returns:

the annotation, or null if not found

getPropertyName

public String getPropertyName()

Description copied from interface: InternalPropBinding

Returns the name of the property, if exists.

Specified by:

getPropertyName in interface InternalPropBinding

getExpression

public String getExpression()