org.apache.commons.configuration.tree.xpath
Class ConfigurationNodePointer

java.lang.Object
  extended byorg.apache.commons.jxpath.ri.model.NodePointer
      extended byorg.apache.commons.configuration.tree.xpath.ConfigurationNodePointer
All Implemented Interfaces:
Cloneable, Comparable, org.apache.commons.jxpath.Pointer, Serializable

class ConfigurationNodePointer
extends org.apache.commons.jxpath.ri.model.NodePointer

A specific NodePointer implementation for configuration nodes.

This is needed for queries using JXPath.

Since:
1.3
Version:
$Id: ConfigurationNodePointer.java 439648 2006-09-02 20:42:10Z oheger $
Author:
Oliver Heger

Field Summary
 
Fields inherited from class org.apache.commons.jxpath.ri.model.NodePointer
index, locale, parent, UNKNOWN_NAMESPACE, WHOLE_COLLECTION
 
Constructor Summary
ConfigurationNodePointer(ConfigurationNode node, Locale locale)
          Creates a new instance of ConfigurationNodePointer.
ConfigurationNodePointer(org.apache.commons.jxpath.ri.model.NodePointer parent, ConfigurationNode node)
          Creates a new instance of ConfigurationNodePointer and initializes it with its parent pointer.
 
Method Summary
 org.apache.commons.jxpath.ri.model.NodeIterator attributeIterator(org.apache.commons.jxpath.ri.QName name)
          Returns an iterator for the attributes that match the given name.
 org.apache.commons.jxpath.ri.model.NodeIterator childIterator(org.apache.commons.jxpath.ri.compiler.NodeTest test, boolean reverse, org.apache.commons.jxpath.ri.model.NodePointer startWith)
          Returns an iterator for the children of this pointer that match the given test object.
 int compareChildNodePointers(org.apache.commons.jxpath.ri.model.NodePointer pointer1, org.apache.commons.jxpath.ri.model.NodePointer pointer2)
          Compares two child node pointers.
 Object getBaseValue()
          Returns this node's base value.
 Object getImmediateNode()
          Returns the immediate node.
 int getLength()
          Returns this node's length.
 org.apache.commons.jxpath.ri.QName getName()
          Returns this node's name.
 Object getValue()
          Returns the value of this node.
 boolean isAttribute()
          Checks whether this node pointer refers to an attribute node.
 boolean isCollection()
          Returns a flag if this node is a collection.
 boolean isLeaf()
          Returns a flag whether this node is a leaf.
 void setValue(Object value)
          Sets the value of this node.
 boolean testNode(org.apache.commons.jxpath.ri.compiler.NodeTest test)
          Tests if this node matches the given test.
 
Methods inherited from class org.apache.commons.jxpath.ri.model.NodePointer
asPath, clone, compareTo, createAttribute, createChild, createChild, createPath, createPath, getDefaultNamespaceURI, getImmediateParentPointer, getImmediateValuePointer, getIndex, getLocale, getNamespaceResolver, getNamespaceURI, getNamespaceURI, getNode, getNodeValue, getParent, getPointerByID, getPointerByKey, getRootNode, getValuePointer, isActual, isContainer, isDefaultNamespace, isLanguage, isNode, isRoot, namespaceIterator, namespacePointer, newChildNodePointer, newNodePointer, printPointerChain, remove, setAttribute, setIndex, setNamespaceResolver, toString
 
Methods inherited from class java.lang.Object
equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Constructor Detail

ConfigurationNodePointer

public ConfigurationNodePointer(ConfigurationNode node,
                                Locale locale)
Creates a new instance of ConfigurationNodePointer.

Parameters:
node - the node
locale - the locale

ConfigurationNodePointer

public ConfigurationNodePointer(org.apache.commons.jxpath.ri.model.NodePointer parent,
                                ConfigurationNode node)
Creates a new instance of ConfigurationNodePointer and initializes it with its parent pointer.

Parameters:
parent - the parent pointer
node - the associated node
Method Detail

isLeaf

public boolean isLeaf()
Returns a flag whether this node is a leaf. This is the case if there are no child nodes.

Returns:
a flag if this node is a leaf

isCollection

public boolean isCollection()
Returns a flag if this node is a collection. This is not the case.

Returns:
the collection flag

getLength

public int getLength()
Returns this node's length. This is always 1.

Returns:
the node's length

isAttribute

public boolean isAttribute()
Checks whether this node pointer refers to an attribute node. This method checks the attribute flag of the associated configuration node.

Returns:
the attribute flag

getName

public org.apache.commons.jxpath.ri.QName getName()
Returns this node's name.

Returns:
the name

getBaseValue

public Object getBaseValue()
Returns this node's base value. This is the associated configuration node.

Returns:
the base value

getImmediateNode

public Object getImmediateNode()
Returns the immediate node. This is the associated configuration node.

Returns:
the immediate node

getValue

public Object getValue()
Returns the value of this node.

Returns:
the represented node's value

setValue

public void setValue(Object value)
Sets the value of this node.

Parameters:
value - the new value

compareChildNodePointers

public int compareChildNodePointers(org.apache.commons.jxpath.ri.model.NodePointer pointer1,
                                    org.apache.commons.jxpath.ri.model.NodePointer pointer2)
Compares two child node pointers.

Parameters:
pointer1 - one pointer
pointer2 - another pointer
Returns:
a flag, which pointer should be sorted first

attributeIterator

public org.apache.commons.jxpath.ri.model.NodeIterator attributeIterator(org.apache.commons.jxpath.ri.QName name)
Returns an iterator for the attributes that match the given name.

Parameters:
name - the attribute name
Returns:
the iterator for the attributes

childIterator

public org.apache.commons.jxpath.ri.model.NodeIterator childIterator(org.apache.commons.jxpath.ri.compiler.NodeTest test,
                                                                     boolean reverse,
                                                                     org.apache.commons.jxpath.ri.model.NodePointer startWith)
Returns an iterator for the children of this pointer that match the given test object.

Parameters:
test - the test object
reverse - the reverse flag
startWith - the start value of the iteration

testNode

public boolean testNode(org.apache.commons.jxpath.ri.compiler.NodeTest test)
Tests if this node matches the given test. Configuration nodes are text nodes, too because they can contain a value.

Parameters:
test - the test object
Returns:
a flag if this node corresponds to the test


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