PropertyPointer (Commons JXPath 1.3 API)

java.lang.Object
- org.apache.commons.jxpath.ri.model.NodePointer
- - org.apache.commons.jxpath.ri.model.beans.PropertyPointer

All Implemented Interfaces:

Serializable, Cloneable, Comparable, Pointer

Direct Known Subclasses:

BeanPropertyPointer, DynaBeanPropertyPointer, DynamicPropertyPointer, NullPropertyPointer
```
public abstract class PropertyPointer
extends NodePointer
```
A pointer allocated by a PropertyOwnerPointer to represent the value of a property of the parent object.

Version:

$Revision: 652845 $ $Date: 2008-05-02 19:46:46 +0200 (Fr, 02 Mai 2008) $

Author:

Dmitri Plotnikov

See Also:
Serialized Form

Property Summary

Properties
Type Property and Description

protected abstract boolean isActual
Learn whether this pointer references an actual property.

Properties
Type	Property and Description
`protected abstract boolean`	`isActual` Learn whether this pointer references an actual property.

Field Summary

Fields
Modifier and Type Field and Description

protected Object bean
owning object

protected int propertyIndex
property index

static int UNSPECIFIED_PROPERTY
- Fields inherited from class org.apache.commons.jxpath.ri.model.NodePointer
  index, locale, parent, UNKNOWN_NAMESPACE, WHOLE_COLLECTION

Fields
Modifier and Type	Field and Description
`protected Object`	`bean` owning object
`protected int`	`propertyIndex` property index
`static int`	`UNSPECIFIED_PROPERTY`

Constructor Summary

Constructors
Constructor and Description
`PropertyPointer(NodePointer parent)` Takes a javabean, a descriptor of a property of that object and an offset within that property (starting with 0).

Method Summary

Methods
Modifier and Type	Method and Description
`int`	`compareChildNodePointers(NodePointer pointer1, NodePointer pointer2)` Compares two child NodePointers and returns a positive number, zero or a positive number according to the order of the pointers.
`NodePointer`	`createChild(JXPathContext context, QName name, int index)` Called by a child pointer when it needs to create a parent object for a non-existent collection element.
`NodePointer`	`createChild(JXPathContext context, QName name, int index, Object value)` Called by a child pointer if that child needs to assign the value supplied in the createPath(context, value) call to a non-existent node.
`NodePointer`	`createPath(JXPathContext context)` Called by a child pointer when it needs to create a parent object.
`NodePointer`	`createPath(JXPathContext context, Object value)` Called directly by JXPathContext.
`boolean`	`equals(Object object)`
`Object`	`getBean()` Get the parent bean.
`Object`	`getImmediateNode()` Returns the object the pointer points to; does not convert it to a "canonical" type.
`NodePointer`	`getImmediateValuePointer()` Returns a NodePointer that can be used to access the currently selected property value.
`int`	`getLength()` If the property contains a collection, then the length of that collection, otherwise - 1.
`QName`	`getName()` Returns the name of this node.
`abstract int`	`getPropertyCount()` Count the number of properties represented.
`int`	`getPropertyIndex()` Get the property index.
`abstract String`	`getPropertyName()` Get the property name.
`abstract String[]`	`getPropertyNames()` Get the names of the included properties.
`int`	`hashCode()`
`boolean`	`isActual()` An actual pointer points to an existing part of an object graph, even if it is null.
`protected abstract 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`	`isLeaf()` If true, this node does not have children
`void`	`setPropertyIndex(int index)` Set the property index.
`abstract void`	`setPropertyName(String propertyName)` Set the property name.

Methods inherited from class org.apache.commons.jxpath.ri.model.NodePointer
asPath, attributeIterator, childIterator, clone, compareTo, createAttribute, escape, getAbstractFactory, getBaseValue, getDefaultNamespaceURI, getImmediateParentPointer, getIndex, getLocale, getNamespaceResolver, getNamespaceURI, getNamespaceURI, getNode, getNodeSetByKey, getNodeValue, getParent, getPointerByID, getPointerByKey, getRootNode, getValue, getValuePointer, isAttribute, isContainer, isDefaultNamespace, isLanguage, isNode, isRoot, namespaceIterator, namespacePointer, newChildNodePointer, newNodePointer, printPointerChain, remove, setAttribute, setIndex, setNamespaceResolver, setValue, testNode, toString

Methods inherited from class java.lang.Object
finalize, getClass, notify, notifyAll, wait, wait, wait

- Property Detail
  - isActual
    
    Learn whether this pointer references an actual property.
    
    Returns:
    true if actual
- Field Detail
  - UNSPECIFIED_PROPERTY
```
public static final int UNSPECIFIED_PROPERTY
```
    See Also:
    Constant Field Values
  - propertyIndex
```
protected int propertyIndex
```
    property index
  - bean
```
protected Object bean
```
    owning object
- Constructor Detail
  - PropertyPointer
```
public PropertyPointer(NodePointer parent)
```
    Takes a javabean, a descriptor of a property of that object and an offset within that property (starting with 0).
    
    Parameters:
    parent - parent pointer
- Method Detail
  - getPropertyIndex
```
public int getPropertyIndex()
```
    Get the property index.
    
    Returns:
    int index
  - setPropertyIndex
```
public void setPropertyIndex(int index)
```
    Set the property index.
    
    Parameters:
    index - property index
  - getBean
```
public Object getBean()
```
    Get the parent bean.
    
    Returns:
    Object
  - getName
```
public QName getName()
```
    Description copied from class: NodePointer
    
    Returns the name of this node. Can be null.
    
    Specified by:
    
    getName in class NodePointer
    
    Returns:
    QName
  - getPropertyName
```
public abstract String getPropertyName()
```
    Get the property name.
    
    Returns:
    String property name.
  - setPropertyName
```
public abstract void setPropertyName(String propertyName)
```
    Set the property name.
    
    Parameters:
    propertyName - property name to set.
  - getPropertyCount
```
public abstract int getPropertyCount()
```
    Count the number of properties represented.
    
    Returns:
    int
  - getPropertyNames
```
public abstract String[] getPropertyNames()
```
    Get the names of the included properties.
    
    Returns:
    String[]
  - isActualProperty
```
protected abstract boolean isActualProperty()
```
    Learn whether this pointer references an actual property.
    
    Returns:
    true if actual
  - isActual
```
public boolean isActual()
```
    Description copied from class: NodePointer
    
    An actual pointer points to an existing part of an object graph, even if it is null. A non-actual pointer represents a part that does not exist at all. For instance consider the pointer "/address/street". If both address and street are not null, the pointer is actual. If address is not null, but street is null, the pointer is still actual. If address is null, the pointer is not actual. (In JavaBeans) if address is not a property of the root bean, a Pointer for this path cannot be obtained at all - actual or otherwise.
    
    Overrides:
    
    isActual in class NodePointer
    
    Returns:
    boolean
  - getImmediateNode
```
public Object getImmediateNode()
```
    Description copied from class: NodePointer
    
    Returns the object the pointer points to; does not convert it to a "canonical" type.
    
    Specified by:
    
    getImmediateNode in class NodePointer
    
    Returns:
    Object node
  - isCollection
```
public boolean isCollection()
```
    Description copied from class: NodePointer
    
    Returns true if the value of the pointer is an array or a Collection.
    
    Specified by:
    
    isCollection in class NodePointer
    
    Returns:
    boolean
  - isLeaf
```
public boolean isLeaf()
```
    Description copied from class: NodePointer
    
    If true, this node does not have children
    
    Specified by:
    
    isLeaf in class NodePointer
    
    Returns:
    boolean
  - getLength
```
public int getLength()
```
    If the property contains a collection, then the length of that collection, otherwise - 1.
    
    Specified by:
    
    getLength in class NodePointer
    
    Returns:
    int length
  - getImmediateValuePointer
```
public NodePointer getImmediateValuePointer()
```
    Returns a NodePointer that can be used to access the currently selected property value.
    
    Overrides:
    
    getImmediateValuePointer in class NodePointer
    
    Returns:
    NodePointer
    See Also:
    NodePointer.getValuePointer()
  - 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 NodePointer
    
    Parameters:
    context - the owning JXPathContext
    
    Returns:
    created NodePointer
  - createPath
```
public NodePointer createPath(JXPathContext context,
                     Object value)
```
    Description copied from class: NodePointer
    
    Called directly by JXPathContext. Must create path and set value.
    
    Overrides:
    
    createPath in class NodePointer
    
    Parameters:
    context - the owning JXPathContext
    value - the new value to set
    
    Returns:
    created NodePointer
  - createChild
```
public NodePointer createChild(JXPathContext context,
                      QName name,
                      int index,
                      Object value)
```
    Description copied from class: NodePointer
    
    Called by a child pointer if that child needs to assign the value supplied in the createPath(context, value) call to a non-existent node. This method may have to expand the collection in order to assign the element.
    
    Overrides:
    
    createChild in class NodePointer
    
    Parameters:
    context - the owning JXPathCOntext
    name - the QName at which a child should be created
    index - child index.
    value - node value to set
    
    Returns:
    created NodePointer
  - createChild
```
public NodePointer createChild(JXPathContext context,
                      QName name,
                      int index)
```
    Description copied from class: NodePointer
    
    Called by a child pointer when it needs to create a parent object for a non-existent collection element. It may have to expand the collection, then create an element object and return a new pointer describing the newly created element.
    
    Overrides:
    
    createChild in class NodePointer
    
    Parameters:
    context - the owning JXPathCOntext
    name - the QName at which a child should be created
    index - child index.
    
    Returns:
    created NodePointer
  - hashCode
```
public int hashCode()
```
    Overrides:
    
    hashCode in class Object
  - equals
```
public boolean equals(Object object)
```
    Overrides:
    
    equals in class Object
  - compareChildNodePointers
```
public int compareChildNodePointers(NodePointer pointer1,
                           NodePointer pointer2)
```
    Description copied from class: NodePointer
    
    Compares two child NodePointers and returns a positive number, zero or a positive number according to the order of the pointers.
    
    Specified by:
    
    compareChildNodePointers in class NodePointer
    
    Parameters:
    pointer1 - first pointer to be compared
    pointer2 - second pointer to be compared
    
    Returns:
    int per Java comparison conventions

Class PropertyPointer

Property Summary

Field Summary

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

Constructor Summary

Method Summary

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

Methods inherited from class java.lang.Object

Property Detail

isActual

Field Detail

UNSPECIFIED_PROPERTY

propertyIndex

bean

Constructor Detail

PropertyPointer

Method Detail

getPropertyIndex

setPropertyIndex

getBean

getName

getPropertyName

setPropertyName

getPropertyCount

getPropertyNames

isActualProperty

isActual

getImmediateNode

isCollection

isLeaf

getLength

getImmediateValuePointer

createPath

createPath

createChild

createChild

hashCode

equals

compareChildNodePointers