Class AbstractEntity

java.lang.Object

org.dom4j.tree.AbstractNode

org.dom4j.tree.AbstractEntity

All Implemented Interfaces:

Serializable, Cloneable, Entity, Node

Direct Known Subclasses:

FlyweightEntity

public abstract class AbstractEntity
extends AbstractNode
implements Entity

AbstractEntity is an abstract base class for tree implementors to use for implementation inheritence.

Version:

$Revision: 1.15 $

See Also:

• Serialized Form

Field Summary

Fields inherited from class AbstractNode

NODE_TYPE_NAMES

Fields inherited from interface Node

ANY_NODE, ATTRIBUTE_NODE, CDATA_SECTION_NODE, COMMENT_NODE, DOCUMENT_NODE, DOCUMENT_TYPE_NODE, ELEMENT_NODE, ENTITY_REFERENCE_NODE, MAX_NODE_TYPE, NAMESPACE_NODE, PROCESSING_INSTRUCTION_NODE, TEXT_NODE, UNKNOWN_NODE

Constructor Summary

Constructors

Constructor	Description
AbstractEntity()

Method Summary

Modifier and Type	Method	Description
void	accept(Visitor visitor)	accept is the method used in the Visitor Pattern.
String	asXML()	asXML returns the textual XML representation of this node.
short	getNodeType()	Returns the code according to the type of node.
String	getPath(Element context)	Returns the relative XPath expression which will return a node set containing the given node such as a/b/@c.
String	getStringValue()	Returns the XPath string-value of this node.
String	getUniquePath(Element context)	Returns the relative unique XPath expression from the given context which will return a nodeset of one node which is the current node.
String	toString()
void	write(Writer writer)	write writes this node as the default XML notation for this node.

Methods inherited from class AbstractNode

asXPathResult, clone, createPattern, createXPath, createXPathFilter, createXPathResult, detach, getDocument, getDocumentFactory, getName, getNodeTypeName, getParent, getPath, getText, getUniquePath, hasContent, isReadOnly, matches, numberValueOf, selectNodes, selectNodes, selectNodes, selectObject, selectSingleNode, setDocument, setName, setParent, setText, supportsParent, valueOf

Methods inherited from class Object

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

Methods inherited from interface Node

asXPathResult, clone, createXPath, detach, getDocument, getName, getNodeTypeName, getParent, getPath, getText, getUniquePath, hasContent, isReadOnly, matches, numberValueOf, selectNodes, selectNodes, selectNodes, selectObject, selectSingleNode, setDocument, setName, setParent, setText, supportsParent, valueOf

Constructor Details

AbstractEntity

public AbstractEntity()

Method Details

getNodeType

public short getNodeType()

Description copied from interface: Node

Returns the code according to the type of node. This makes processing nodes polymorphically much easier as the switch statement can be used instead of multiple if (instanceof) statements.

Specified by:

getNodeType in interface Node

Overrides:

getNodeType in class AbstractNode

Returns:

a W3C DOM complient code for the node type such as ELEMENT_NODE or ATTRIBUTE_NODE

getPath

public String getPath(Element context)

Description copied from interface: Node

Returns the relative XPath expression which will return a node set containing the given node such as a/b/@c. No indexing will be used to restrict the path if multiple elements with the same name occur on the path.

Specified by:

getPath in interface Node

Parameters:

context - is the parent context from which the relative path should start. If the context is null or the context is not an ancestor of this node then the path will be absolute and start from the document and so begin with the '/' character.

Returns:

the XPath expression relative to the given context which will return a nodeset containing at least this node.

getUniquePath

public String getUniquePath(Element context)

Description copied from interface: Node

Returns the relative unique XPath expression from the given context which will return a nodeset of one node which is the current node. This method will use the XPath index operator to restrict the path if multiple elements with the same name occur on the path.

Specified by:

getUniquePath in interface Node

Parameters:

context - is the parent context from which the path should start. If the context is null or the context is not an ancestor of this node then the path will start from the document and so begin with the '/' character.

Returns:

the XPath expression relative to the given context which will return a nodeset containing just this node.

toString

public String toString()

Overrides:

toString in class Object

getStringValue

public String getStringValue()

Description copied from interface: Node

Returns the XPath string-value of this node. The behaviour of this method is defined in the XPath specification .

Specified by:

getStringValue in interface Node

Overrides:

getStringValue in class AbstractNode

Returns:

the text from all the child Text and Element nodes appended together.

asXML

public String asXML()

Description copied from interface: Node

asXML returns the textual XML representation of this node.

Specified by:

asXML in interface Node

Returns:

the XML representation of this node

write

public void write(Writer writer)
           throws IOException

Description copied from interface: Node

write writes this node as the default XML notation for this node. If you wish to control the XML output (such as for pretty printing, changing the indentation policy etc.) then please use XMLWriter or its derivations.

Specified by:

write in interface Node

Overrides:

write in class AbstractNode

Parameters:

writer - is the Writer to output the XML to

Throws:

IOException - DOCUMENT ME!

accept

public void accept(Visitor visitor)

Description copied from interface: Node

accept is the method used in the Visitor Pattern.

Specified by:

accept in interface Node

Parameters:

visitor - is the visitor in the Visitor Pattern