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java.lang.Objectorg.apache.commons.jxpath.ri.model.NodePointer
org.apache.commons.jxpath.ri.model.beans.PropertyPointer
org.apache.commons.jxpath.ri.model.beans.NullPropertyPointer
public class NullPropertyPointer
Field Summary |
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Fields inherited from class org.apache.commons.jxpath.ri.model.beans.PropertyPointer |
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bean, propertyIndex, UNSPECIFIED_PROPERTY |
Fields inherited from class org.apache.commons.jxpath.ri.model.NodePointer |
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index, locale, parent, UNKNOWN_NAMESPACE, WHOLE_COLLECTION |
Constructor Summary | |
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NullPropertyPointer(NodePointer parent)
Create a new NullPropertyPointer. |
Method Summary | |
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java.lang.String |
asPath()
Returns an XPath that maps to this Pointer. |
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,
java.lang.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,
java.lang.Object value)
Called directly by JXPathContext. |
java.lang.Object |
getBaseValue()
Returns the value represented by the pointer before indexing. |
java.lang.Object |
getImmediateNode()
Returns the object the pointer points to; does not convert it to a "canonical" type. |
int |
getLength()
If the property contains a collection, then the length of that collection, otherwise - 1. |
QName |
getName()
Returns the name of this node. |
int |
getPropertyCount()
Count the number of properties represented. |
java.lang.String |
getPropertyName()
Get the property name. |
java.lang.String[] |
getPropertyNames()
Get the names of the included properties. |
NodePointer |
getValuePointer()
If this pointer manages a transparent container, like a variable, this method returns the pointer to the contents. |
boolean |
isActual()
An actual pointer points to an existing part of an object graph, even if it is null. |
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()
If true, this node is auxiliary and can only be used as an intermediate in the chain of pointers. |
boolean |
isLeaf()
If true, this node does not have children |
void |
setNameAttributeValue(java.lang.String attributeValue)
Set the name attribute. |
void |
setPropertyIndex(int index)
Set the property index. |
void |
setPropertyName(java.lang.String propertyName)
Set the property name. |
void |
setValue(java.lang.Object value)
Converts the value to the required type and changes the corresponding object to that value. |
Methods inherited from class org.apache.commons.jxpath.ri.model.beans.PropertyPointer |
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compareChildNodePointers, equals, getBean, getImmediateValuePointer, getPropertyIndex, hashCode |
Methods inherited from class org.apache.commons.jxpath.ri.model.NodePointer |
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attributeIterator, childIterator, clone, compareTo, createAttribute, escape, getAbstractFactory, getDefaultNamespaceURI, getImmediateParentPointer, getIndex, getLocale, getNamespaceResolver, getNamespaceURI, getNamespaceURI, getNode, getNodeSetByKey, getNodeValue, getParent, getPointerByID, getPointerByKey, getRootNode, getValue, isAttribute, isDefaultNamespace, isLanguage, isNode, isRoot, namespaceIterator, namespacePointer, newChildNodePointer, newNodePointer, printPointerChain, remove, setAttribute, setIndex, setNamespaceResolver, testNode, toString |
Methods inherited from class java.lang.Object |
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finalize, getClass, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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public NullPropertyPointer(NodePointer parent)
parent
- pointerMethod Detail |
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public QName getName()
NodePointer
getName
in class PropertyPointer
public void setPropertyIndex(int index)
PropertyPointer
setPropertyIndex
in class PropertyPointer
index
- property indexpublic int getLength()
PropertyPointer
getLength
in class PropertyPointer
public java.lang.Object getBaseValue()
NodePointer
getBaseValue
in class NodePointer
public java.lang.Object getImmediateNode()
NodePointer
getImmediateNode
in class PropertyPointer
public boolean isLeaf()
NodePointer
isLeaf
in class PropertyPointer
public NodePointer getValuePointer()
NodePointer
getValuePointer()
directly. Override the
getImmediateValuePointer()
method instead. The
getValuePointer()
method is calls
getImmediateValuePointer()
and, if the result is not
this
, invokes getValuePointer()
recursively.
The idea here is to open all nested containers. Let's say we have a
container within a container within a container. The
getValuePointer()
method should then open all those
containers and return the pointer to the ultimate contents. It does so
with the above recursion.
getValuePointer
in class NodePointer
protected boolean isActualProperty()
PropertyPointer
isActualProperty
in class PropertyPointer
public boolean isActual()
NodePointer
isActual
in class PropertyPointer
public boolean isContainer()
NodePointer
isContainer
in class NodePointer
public void setValue(java.lang.Object value)
NodePointer
setValue
in interface Pointer
setValue
in class NodePointer
value
- the value to setpublic NodePointer createPath(JXPathContext context)
NodePointer
createPath
in class PropertyPointer
context
- the owning JXPathContext
public NodePointer createPath(JXPathContext context, java.lang.Object value)
NodePointer
createPath
in class PropertyPointer
context
- the owning JXPathContextvalue
- the new value to set
public NodePointer createChild(JXPathContext context, QName name, int index)
NodePointer
createChild
in class PropertyPointer
context
- the owning JXPathCOntextname
- the QName at which a child should be createdindex
- child index.
public NodePointer createChild(JXPathContext context, QName name, int index, java.lang.Object value)
NodePointer
createChild
in class PropertyPointer
context
- the owning JXPathCOntextname
- the QName at which a child should be createdindex
- child index.value
- node value to set
public java.lang.String getPropertyName()
PropertyPointer
getPropertyName
in class PropertyPointer
public void setPropertyName(java.lang.String propertyName)
PropertyPointer
setPropertyName
in class PropertyPointer
propertyName
- property name to set.public void setNameAttributeValue(java.lang.String attributeValue)
attributeValue
- value to setpublic boolean isCollection()
NodePointer
true
if the value of the pointer is an array or
a Collection.
isCollection
in class PropertyPointer
public int getPropertyCount()
PropertyPointer
getPropertyCount
in class PropertyPointer
public java.lang.String[] getPropertyNames()
PropertyPointer
getPropertyNames
in class PropertyPointer
public java.lang.String asPath()
NodePointer
asPath
in interface Pointer
asPath
in class NodePointer
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