XML::DOM::AttDef(3) User Contributed Perl Documentation XML::DOM::AttDef(3)NAME
XML::DOM::AttDef - A single XML attribute definition in an ATTLIST in XML::DOM
XML::DOM::AttDef extends XML::DOM::Node, but is not part of the DOM Level 1 specification.
Each object of this class represents one attribute definition in an AttlistDecl.
Returns the attribute name.
Returns the default value, or undef.
Whether the attribute value is fixed (see #FIXED keyword.)
Whether the attribute value is required (see #REQUIRED keyword.)
Whether the attribute value is implied (see #IMPLIED keyword.)
perl v5.16.3 2000-01-31 XML::DOM::AttDef(3)
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XML::DOM::Attr(3pm) User Contributed Perl Documentation XML::DOM::Attr(3pm)NAME
XML::DOM::Attr - An XML attribute in XML::DOM
XML::DOM::Attr extends XML::DOM::Node.
The Attr nodes built by the XML::DOM::Parser always have one child node which is a Text node containing the expanded string value (i.e.
EntityReferences are always expanded.) EntityReferences may be added when modifying or creating a new Document.
The Attr interface represents an attribute in an Element object. Typically the allowable values for the attribute are defined in a docu-
ment type definition.
Attr objects inherit the Node interface, but since they are not actually child nodes of the element they describe, the DOM does not con-
sider them part of the document tree. Thus, the Node attributes parentNode, previousSibling, and nextSibling have a undef value for Attr
objects. The DOM takes the view that attributes are properties of elements rather than having a separate identity from the elements they
are associated with; this should make it more efficient to implement such features as default attributes associated with all elements of a
given type. Furthermore, Attr nodes may not be immediate children of a DocumentFragment. However, they can be associated with Element nodes
contained within a DocumentFragment. In short, users and implementors of the DOM need to be aware that Attr nodes have some things in com-
mon with other objects inheriting the Node interface, but they also are quite distinct.
The attribute's effective value is determined as follows: if this attribute has been explicitly assigned any value, that value is the
attribute's effective value; otherwise, if there is a declaration for this attribute, and that declaration includes a default value, then
that default value is the attribute's effective value; otherwise, the attribute does not exist on this element in the structure model until
it has been explicitly added. Note that the nodeValue attribute on the Attr instance can also be used to retrieve the string version of the
In XML, where the value of an attribute can contain entity references, the child nodes of the Attr node provide a representation in which
entity references are not expanded. These child nodes may be either Text or EntityReference nodes. Because the attribute type may be
unknown, there are no tokenized attribute values.
On retrieval, the value of the attribute is returned as a string. Character and general entity references are replaced with their val-
DOM Spec: On setting, this creates a Text node with the unparsed contents of the string.
Returns the name of this attribute.
perl v5.8.8 2008-02-03 XML::DOM::Attr(3pm)
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