smacs.tree
Class NodeExtendedAttribute

java.lang.Object
  org.dom4j.tree.AbstractNode
      org.dom4j.tree.AbstractAttribute
          org.dom4j.tree.FlyweightAttribute
              org.dom4j.tree.DefaultAttribute
                  smacs.tree.NodeDefaultAttribute
                      smacs.tree.NodeExtendedAttribute

All Implemented Interfaces:

Attribute, Cloneable, Node, Serializable

Direct Known Subclasses:

NodeReferenceAttribute

public class NodeExtendedAttribute

extends NodeDefaultAttribute

structured attribute.

A normal dom4j attribute has only a string value. We do already have one scheme to overcome this limitation with the NodeReferenceAttribute to some NodeReferenceId linkage. In other words that earlier scheme would require to store a node-tree and have it referenced indirectly. However the scheme of "link=" to "id=" makes for a lot of confusion while reading the xml representation of the information tree, and in many cases we have a hard time to map additional information nodes into the tree so they are not lost unhappily.

The presented scheme here provides us with another tool that would be possible in most modern compiler tree as well - the possibility to enhance a syntax tree with additional information that can be used directly. The old way of cloning via SimpleNodeClone has shown to perhaps kill too much of actual linkages to other nodes in the input syntax, namely the breakage of some of the established link/id pairs. Anyway, adding strucutred objects as an attribute of a node is easier (hey, python would do that in the object model).

The real difference is that we want to not only have a standard XML representation with attribute name/stringvalue but instead have atleast one textual format that shows us all represented information of the given structured attribute. And that's what the current interfaces is largely doing: providing a few more possibilites for visualization of the attribute content.

Author:

Copyright (C) 2004, Guido Draheim. All rights reserved. Part of SMACS project.

See Also:

Serialized Form

Field Summary

Fields inherited from class smacs.tree.NodeDefaultAttribute

_qname

Fields inherited from class org.dom4j.tree.FlyweightAttribute

value

Fields inherited from class org.dom4j.tree.AbstractNode

NODE_TYPE_NAMES

Fields inherited from interface org.dom4j.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

NodeExtendedAttribute(Element parent, QName qname, String value)

NodeExtendedAttribute(Element parent, String name, String value, Namespace namespace)

NodeExtendedAttribute(QName qname)

NodeExtendedAttribute(QName qname, String value)

NodeExtendedAttribute(String name, String value)

NodeExtendedAttribute(String name, String value, Namespace namespace)

Method Summary

String

toAttrXML(String prefix) currently: nothing

Methods inherited from class smacs.tree.NodeDefaultAttribute

getQName, newQName, newQName, setName, setQName

Methods inherited from class org.dom4j.tree.DefaultAttribute

getParent, isReadOnly, setParent, setValue, supportsParent

Methods inherited from class org.dom4j.tree.FlyweightAttribute

getValue

Methods inherited from class org.dom4j.tree.AbstractAttribute

accept, asXML, createXPathResult, getData, getName, getNamespace, getNamespacePrefix, getNamespaceURI, getNodeType, getPath, getQualifiedName, getText, getUniquePath, setData, setNamespace, setText, toString, write

Methods inherited from class org.dom4j.tree.AbstractNode

asXPathResult, clone, createPattern, createXPath, createXPathFilter, detach, getDocument, getDocumentFactory, getNodeTypeName, getPath, getStringValue, getUniquePath, hasContent, matches, numberValueOf, selectNodes, selectNodes, selectNodes, selectObject, selectSingleNode, setDocument, valueOf

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.dom4j.Node

asXPathResult, clone, createXPath, detach, getDocument, getNodeTypeName, getPath, getStringValue, getUniquePath, hasContent, matches, numberValueOf, selectNodes, selectNodes, selectNodes, selectObject, selectSingleNode, setDocument, valueOf

Constructor Detail

NodeExtendedAttribute

public NodeExtendedAttribute(QName qname)

NodeExtendedAttribute

public NodeExtendedAttribute(QName qname,
                             String value)

NodeExtendedAttribute

public NodeExtendedAttribute(Element parent,
                             QName qname,
                             String value)

NodeExtendedAttribute

public NodeExtendedAttribute(String name,
                             String value)

NodeExtendedAttribute

public NodeExtendedAttribute(String name,
                             String value,
                             Namespace namespace)

NodeExtendedAttribute

public NodeExtendedAttribute(Element parent,
                             String name,
                             String value,
                             Namespace namespace)

Method Detail

toAttrXML

public String toAttrXML(String prefix)

currently: nothing