@Override
public DisplayPaperResult execute(DisplayPaper action, ExecutionContext context)
throws ActionException {
DisplayPaperResult result = new DisplayPaperResult();
Index<Node> uriIndex = ContextHelper.getUriIndex(servletContext);
String uri = action.getPaperUri();
IOHelper.log("Rendering paper page with uri '"+ uri +"'");
Node paperNode = null;
try{
paperNode = uriIndex.get(DBNodeProperties.URI, uri).getSingle();
} catch (Exception e) {
System.out.println("URI INDEX ERROR. uri " + uri + " has more than one associated node.");
}
if (paperNode == null || !NodeType.isPaperNode(paperNode) || !paperNode.hasProperty(DBNodeProperties.PAGE_RANK_VALUE) ){
System.out.println("Cannot render Paper page for node: "+paperNode.toString() +", uri: " + uri);
result.setTitle("Paper Not Found!");
return result;
}
try {
result.setTitle((String) paperNode.getProperty(DBNodeProperties.PAPER_TITLE));
result.setAbstract((String) paperNode.getProperty(DBNodeProperties.PAPER_ABSTRACT));
// Author list
for (Relationship rel: paperNode.getRelationships(DBRelationshipTypes.WRITTEN_BY)){
Node authorNode = rel.getEndNode();
result.addAuthor(authorAccessHandler.authorFromNode(authorNode));
}
// Reference list
for (Relationship rel: paperNode.getRelationships(DBRelationshipTypes.CITES, Direction.OUTGOING)){
Node citationTargetNode = rel.getEndNode();
result.addCitedPaper(Neo4jToDTOHelper.paperFromNode(citationTargetNode));
};
// Unmatched references
//String[] array = (String[])paperNode.getProperty(DBNodeProperties.PAPER_UNMATCHED_CITATIONS);
for (String citeString: (String[])paperNode.getProperty(DBNodeProperties.PAPER_UNMATCHED_CITATIONS)){
if (!citeString.equals("")){
result.addCitedPaper(new Paper(citeString));
}
}
// Citation List
for (Relationship rel: paperNode.getRelationships(DBRelationshipTypes.CITES, Direction.INCOMING)){
Node citationSourceNode = rel.getStartNode();
result.addCitedByPaper(Neo4jToDTOHelper.paperFromNode(citationSourceNode));
};
// CoCitations
for (Relationship rel: paperNode.getRelationships(DBRelationshipTypes.CO_CITATION_SCORE, Direction.INCOMING)){
Node coCitationSourceNode = rel.getStartNode();
result.addCoCitedWithPaper(Neo4jToDTOHelper.paperFromNode(coCitationSourceNode));
};
for (Relationship rel: paperNode.getRelationships(DBRelationshipTypes.CO_CITATION_SCORE, Direction.OUTGOING)){
Node coCitationTargetNode = rel.getEndNode();
result.addCoCitedFromPaper(Neo4jToDTOHelper.paperFromNode(coCitationTargetNode));
};
} catch (NotFoundException e) {
result.setTitle("Paper properties not found: " + e.getMessage());
}
IOHelper.log("Return paper object");
return result;
}