Package org.apache.commons.jxpath.ri.model.beans

Class BeanPropertyPointer

java.lang.Object

org.apache.commons.jxpath.ri.model.NodePointer

org.apache.commons.jxpath.ri.model.beans.PropertyPointer

org.apache.commons.jxpath.ri.model.beans.BeanPropertyPointer

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, java.lang.Comparable, Pointer

public class BeanPropertyPointer
extends PropertyPointer

Pointer pointing to a property of a JavaBean.

Version:

$Revision: 670727 $ $Date: 2008-06-23 15:10:38 -0500 (Mon, 23 Jun 2008) $

Author:

Dmitri Plotnikov

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
private java.lang.Object	baseValue
private JXPathBeanInfo	beanInfo
private java.lang.String[]	names
private java.beans.PropertyDescriptor	propertyDescriptor
private java.beans.PropertyDescriptor[]	propertyDescriptors
private java.lang.String	propertyName
private static long	serialVersionUID
private static java.lang.Object	UNINITIALIZED
private java.lang.Object	value

Fields inherited from class org.apache.commons.jxpath.ri.model.NodePointer

index, locale, parent, UNKNOWN_NAMESPACE, WHOLE_COLLECTION

Fields inherited from class org.apache.commons.jxpath.ri.model.beans.PropertyPointer

bean, propertyIndex, UNSPECIFIED_PROPERTY

Constructor Summary

Constructors

Constructor	Description
BeanPropertyPointer(NodePointer parent, JXPathBeanInfo beanInfo)	Create a new BeanPropertyPointer.

Method Summary

Modifier and Type	Method	Description
NodePointer	createPath(JXPathContext context)	Called by a child pointer when it needs to create a parent object.
java.lang.Object	getBaseValue()	Get the value of the currently selected property.
java.lang.Object	getImmediateNode()	If index == WHOLE_COLLECTION, the value of the property, otherwise the value of the index'th element of the collection represented by the property.
int	getLength()	If the property contains a collection, then the length of that collection, otherwise - 1.
int	getPropertyCount()	Count the number of properties represented.
private java.beans.PropertyDescriptor	getPropertyDescriptor()	Finds the property descriptor corresponding to the current property index.
protected java.beans.PropertyDescriptor[]	getPropertyDescriptors()	Get all PropertyDescriptors.
java.lang.String	getPropertyName()	Get the name of the currently selected property.
java.lang.String[]	getPropertyNames()	Get the names of all properties, sorted alphabetically
protected boolean	isActualProperty()	Learn whether this pointer references an actual property.
boolean	isCollection()	Returns true if the value of the pointer is an array or a Collection.
boolean	isContainer()	This type of node is auxiliary.
void	remove()	Remove the node of the object graph this pointer points to.
void	setIndex(int index)	Set the index of this NodePointer.
void	setPropertyIndex(int index)	Selects a property by its offset in the alphabetically sorted list.
void	setPropertyName(java.lang.String propertyName)	Select a property by name.
void	setValue(java.lang.Object value)	If index == WHOLE_COLLECTION, change the value of the property, otherwise change the value of the index'th element of the collection represented by the property.

Methods inherited from class org.apache.commons.jxpath.ri.model.NodePointer

asPath, attributeIterator, childIterator, clone, compareTo, createAttribute, escape, getAbstractFactory, getDefaultNamespaceURI, getImmediateParentPointer, getIndex, getLocale, getNamespaceResolver, getNamespaceURI, getNamespaceURI, getNode, getNodeSetByKey, getNodeValue, getParent, getPointerByID, getPointerByKey, getRootNode, getValue, getValuePointer, isAttribute, isDefaultNamespace, isLanguage, isNode, isRoot, namespaceIterator, namespacePointer, newChildNodePointer, newNodePointer, printPointerChain, setAttribute, setNamespaceResolver, testNode, toString

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from class org.apache.commons.jxpath.ri.model.beans.PropertyPointer

compareChildNodePointers, createChild, createChild, createPath, equals, getBean, getImmediateValuePointer, getName, getPropertyIndex, hashCode, isActual, isLeaf

Field Detail

serialVersionUID

private static final long serialVersionUID

See Also:

Constant Field Values

UNINITIALIZED

private static final java.lang.Object UNINITIALIZED

propertyName

private java.lang.String propertyName

beanInfo

private JXPathBeanInfo beanInfo

baseValue

private java.lang.Object baseValue

value

private java.lang.Object value

names

private transient java.lang.String[] names

propertyDescriptors

private transient java.beans.PropertyDescriptor[] propertyDescriptors

propertyDescriptor

private transient java.beans.PropertyDescriptor propertyDescriptor

Constructor Detail

BeanPropertyPointer

public BeanPropertyPointer(NodePointer parent,
                           JXPathBeanInfo beanInfo)

Create a new BeanPropertyPointer.

Parameters:

parent - parent pointer

beanInfo - describes the target property/ies.

Method Detail

isContainer

public boolean isContainer()

This type of node is auxiliary.

Overrides:

isContainer in class NodePointer

Returns:

true

getPropertyCount

public int getPropertyCount()

Description copied from class: PropertyPointer

Count the number of properties represented.

Specified by:

getPropertyCount in class PropertyPointer

Returns:

int

getPropertyNames

public java.lang.String[] getPropertyNames()

Get the names of all properties, sorted alphabetically

Specified by:

getPropertyNames in class PropertyPointer

Returns:

String[]

setPropertyName

public void setPropertyName(java.lang.String propertyName)

Select a property by name.

Specified by:

setPropertyName in class PropertyPointer

Parameters:

propertyName - String name

setPropertyIndex

public void setPropertyIndex(int index)

Selects a property by its offset in the alphabetically sorted list.

Overrides:

setPropertyIndex in class PropertyPointer

Parameters:

index - property index

getBaseValue

public java.lang.Object getBaseValue()

Get the value of the currently selected property.

Specified by:

getBaseValue in class NodePointer

Returns:

Object value

setIndex

public void setIndex(int index)

Description copied from class: NodePointer

Set the index of this NodePointer.

Overrides:

setIndex in class NodePointer

Parameters:

index - int

getImmediateNode

public java.lang.Object getImmediateNode()

If index == WHOLE_COLLECTION, the value of the property, otherwise the value of the index'th element of the collection represented by the property. If the property is not a collection, index should be zero and the value will be the property itself.

Overrides:

getImmediateNode in class PropertyPointer

Returns:

Object

isActualProperty

protected boolean isActualProperty()

Description copied from class: PropertyPointer

Learn whether this pointer references an actual property.

Specified by:

isActualProperty in class PropertyPointer

Returns:

true if actual

isCollection

public boolean isCollection()

Description copied from class: NodePointer

Returns true if the value of the pointer is an array or a Collection.

Overrides:

isCollection in class PropertyPointer

Returns:

boolean

getLength

public int getLength()

If the property contains a collection, then the length of that collection, otherwise - 1.

Overrides:

getLength in class PropertyPointer

Returns:

int length

setValue

public void setValue(java.lang.Object value)

If index == WHOLE_COLLECTION, change the value of the property, otherwise change the value of the index'th element of the collection represented by the property.

Specified by:

setValue in interface Pointer

Specified by:

setValue in class NodePointer

Parameters:

value - value to set

createPath

public NodePointer createPath(JXPathContext context)

Description copied from class: NodePointer

Called by a child pointer when it needs to create a parent object. Must create an object described by this pointer and return a new pointer that properly describes the new object.

Overrides:

createPath in class PropertyPointer

Parameters:

context - the owning JXPathContext

Returns:

created NodePointer

remove

public void remove()

Description copied from class: NodePointer

Remove the node of the object graph this pointer points to.

Overrides:

remove in class NodePointer

getPropertyName

public java.lang.String getPropertyName()

Get the name of the currently selected property.

Specified by:

getPropertyName in class PropertyPointer

Returns:

String property name

getPropertyDescriptor

private java.beans.PropertyDescriptor getPropertyDescriptor()

Finds the property descriptor corresponding to the current property index.

Returns:

PropertyDescriptor

getPropertyDescriptors

protected java.beans.PropertyDescriptor[] getPropertyDescriptors()

Get all PropertyDescriptors.

Returns:

PropertyDescriptor[]