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| DFDL Infoset | Daffodil's JDOM XML Infoset | Scala scala.xml.Node Infoset |
|---|---|---|
| Document Information Item | JDOM Document | The document is represented by the root element. There is no separate document item. |
| root | getRootElement() | none |
| dfdlVersion | attribute daffodil:dfdlVersion on the root element. | none |
| schema (reserved for future use) | (no implementation) | none |
unicodeByteOrderMark | attribute daf:unicodeByteOrderMark on the root element. | same attribute scheme as JDOM |
| Element Information Item | JDOM Element | scala.xml.Elem |
| namespace | getNamespace(): org.jdom.Namespace | def namespace: String |
| name | getName(): String | def name: String |
| document | getDocument() | none (see parent) |
| datatype | attribute xsi:type with value one of the set of XML Schema simple type QNames that are in the DFDL Subset of XML Schema. For example: xsi:type='xs:string' By convention, the prefix 'xsi' and 'xs' denote here the usual standard namespace URIs. (NOTE: datatype is not yet implemented) | same attribute scheme as JDOM |
| dataValue | For simple types other than xs:string, the cannonical XML representation of the value, as returned by getText(). However, for the value nil, the representation is an element with no value having the xsi:nil='true' attribute. For type xs:string, the DFDL Infoset allows representation of characters that are illegal in XML. These are represented by replacing them with characters in the Unicode Private Use Area by a scheme described below. | def text: String to obtain cannonical text. Nil representation is the same attribute scheme. Values containing XML-illegal characters use the same scheme. |
| children | getChildren() | def child: Node* |
| parent | getParent() | none Scala XML nodes are immutable, and do not have parent references. This allows nodes to be shared. |
| schema | A special attribute dafi:schemaComponentID has a value which can be used to retrieve the associated schema component. (Not yet implemented: means to create a standard Schema Component Designator or SCD) | Same attribute scheme |
| valid | (Not yet implemented) | (not yet implemented) |
| unionMemberSchema | (Not yet implemented) | (not yet implemented) |
| "No Value" | A JDOM Element with no children, and with no dataValue is the representation of an element with "No Value". | A scala Elem with no children and no dataValue. |
| Augmented Infoset | A JDOM Element with a special marker attribute: dafint:hidden='true' signifies that the element is part of the augmented infoset. This attribute is used to identify and filter out elements when the un-augmented infoset is needed. | Same attribute scheme, but on scala.xml.Elem element. |
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