freemarker.template

Interface TemplateNodeModel

All Superinterfaces:
TemplateModel
Known Implementing Classes:
NodeListModel, NodeModel

public interface TemplateNodeModel
extends TemplateModel

Describes objects that are nodes in a tree. If you have a tree of objects, they can be recursively visited using the <#visit...> and <#recurse...> FTL directives. This API is largely based on the W3C Document Object Model (DOM) API. However, it is meant to be generally useful for describing any tree of objects that you wish to navigate using a recursive visitor design pattern.
Author:
Jonathan Revusky
Since:
FreeMarker 2.3

Fields inherited from interface freemarker.template.TemplateModel

NOTHING

Method Summary

TemplateSequenceModel
getChildNodes()
String
getNodeName()
String
getNodeNamespace()
String
getNodeType()
TemplateNodeModel
getParentNode()

Method Details

getChildNodes

public TemplateSequenceModel getChildNodes()
            throws TemplateModelException
Returns:
a sequence containing this node's children. If the returned value is null or empty, this is essentially a leaf node.

getNodeName

public String getNodeName()
            throws TemplateModelException
Returns:
a String that is used to determine the processing routine to use. In the XML implementation, if the node is an element, it returns the element's tag name. If it is an attribute, it returns the attribute's name. It returns "@text" for text nodes, "@pi" for processing instructions, and so on.

getNodeNamespace

public String getNodeNamespace()
            throws TemplateModelException
Returns:
the XML namespace URI with which this node is associated. If this TemplateNodeModel implementation is not XML-related, it will almost certainly be null. Even for XML nodes, this will often be null.

getNodeType

public String getNodeType()
            throws TemplateModelException
Returns:
a String describing the type of node this is. In the W3C DOM, this should be "element", "text", "attribute", etc. A TemplateNodeModel implementation that models other kinds of trees could return whatever it appropriate for that application. It can be null, if you don't want to use node-types.

getParentNode

public TemplateNodeModel getParentNode()
            throws TemplateModelException
Returns:
the parent of this node or null, in which case this node is the root of the tree.