Oxygen XML Author plugin 13.2.0

Author Developer Guide | 2195. The method getReferenceUniqueID should return an unique identifier for the node reference. The uniqueidentifier is used to avoid resolving the references recursively. The method takes as argument an AuthorNode thatrepresents the node with the reference. In the implementation the unique identifier is the value of the location attributefrom the ref element.public String getDisplayName(AuthorNode node) {String displayName = "ref-fragment";if (node.getType() == AuthorNode.NODE_TYPE_ELEMENT) {AuthorElement element = (AuthorElement) node;if ("ref".equals(element.getLocalName())) {AttrValue attrValue = element.getAttribute("location");if (attrValue != null) {displayName = attrValue.getValue();}}}return displayName;}6. The method getReferenceSystemIDshould return the systemID of the referred content. It takes as argumentsan AuthorNode that represents the node with the reference and the AuthorAccess with access methods to theAuthor data model. In the implementation you use the value of the location attribute from the ref element and resolveit relatively to the XML base URL of the node.public String getReferenceSystemID(AuthorNode node,AuthorAccess authorAccess) {String systemID = null;if (node.getType() == AuthorNode.NODE_TYPE_ELEMENT) {AuthorElement element = (AuthorElement) node;if ("ref".equals(element.getLocalName())) {AttrValue attrValue = element.getAttribute("location");if (attrValue != null) {String attrStringVal = attrValue.getValue();try {URL absoluteUrl = new URL(node.getXMLBaseURL(),authorAccess.correctURL(attrStringVal));systemID = absoluteUrl.toString();} catch (MalformedURLException e) {logger.error(e, e);}}}}return systemID;}Note: The complete source code can be found in the Simple Documentation Framework project, includedin the Oxygen Author SDK zip available for download on the Oxygen XML Author plugin website.In the listing below, the XML document contains the ref element:ReferenceWhen no reference resolver is specified, the reference has the following layout:Figure 107: Reference with no specified reference resolver