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shrine-medco/apps/steward-app/src/main/js/app/client/statistics/ontology-term/ontology-term.service.js
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ontology-term.service.js
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(function () {
'use strict';
angular.module('shrine.steward.statistics')
.service('OntologyTermService', OntologyTermService);
OntologyTermService.$inject = ['OntologyTerm'];
function OntologyTermService(OntologyTerm) {
return {
buildOntology: buildOntology,
getMax: function () {
var maxTermUsedCount = OntologyTerm.prototype.maxTermUsedCount;
OntologyTerm.prototype.maxTermUsedCount = 0;
return maxTermUsedCount;
}
};
/**
* Build Ontology from array of Query Records.
*/
function buildOntology(queryRecords, topicId) {
var ln = queryRecords.length;
var queryCount = 0;
var ontology = new OntologyTerm('SHRINE');
var topics = {};
//ontology.queryCount = ln;
for (var i = 0; i < ln; i++) {
var record = queryRecords[i];
var topic = record.topic;
if (topic && (topicId === undefined || topicId === topic.id)) {
var str = record.queryContents;
ontology = traverse(str.queryDefinition.expr, record.externalId, ontology);
queryCount++;
if (!topics[record.topic.id]) {
topics[record.topic.id] = record.topic;
}
appendTopicIfUnique(topic, topics);
}
}
ontology.topics = formatTopicsToArray(topics);
ontology.queryCount = queryCount;
return ontology;
}
function formatTopicsToArray(topicObject) {
var topicArray = [];
var keys = Object.keys(topicObject);
Object.keys(topicObject)
.forEach(function (key) { topicArray.push(topicObject[key]); });
return topicArray;
}
function appendTopicIfUnique(topic, topics) {
var id = topic.id;
if (!topics[id]) {
topics[id] = topic;
}
return topics;
}
/**
* Recursive Traversal of ontological hierarchy.
*/
function traverse(obj, queryId, terms) {
var keys = Object.keys(obj);
// -- nothing to search, we're done. -- //
if (typeof (obj) !== 'object' || !keys.length) {
return terms;
}
// -- traverse each object key, parse all the terms. -- //
for (var i = 0; i < keys.length; i++) {
var key = keys[i];
if (key === 'term') {
if (!Array.isArray(obj.term)) {
processKey(terms, obj.term, queryId);
}
else {
// -- iterate through the termlist -- //
var termList = obj.term;
for (var j = 0; j < termList.length; j++) {
var term = termList[j];
processKey(terms, term, queryId);
}
}
}
else {
traverse(obj[key], queryId, terms);
}
}
return terms;
}
/**
* Parse out a term hierarchy of a term key.
*/
function processKey(terms, key, queryId) {
var prunedKey = key.split('\\\\SHRINE\\SHRINE')[1];
var ontologyList = prunedKey.split('\\').slice(1);
ontologyList = ontologyList.slice(0, ontologyList.length - 1);
var currentLevel = terms;
for (var i = 0; i < ontologyList.length; i++) {
var term = ontologyList[i];
processTerm(currentLevel, term, queryId);
currentLevel = currentLevel.children[term];
}
}
/**
* If a term is already a child of the parent, then add it's query to the list of queries for that term.
* Otherwise, create a new term object and add it to the parent.
*/
function processTerm(terms, key, queryId) {
var term;
if (!terms.children[key]) {
term = addTerm(terms, key, queryId);
}
else {
term = terms.children[key];
term.addQuery(queryId, queryId);
}
}
/**
* Add an instance of a query term to it's parent in the ontolgy.
*/
function addTerm(terms, key, queryId) {
var term = getNewTerm(key);
term.addQuery(queryId, queryId);
terms.children[key] = term;
return term;
}
/**
* Return Instance of Ontology Term.
*/
function getNewTerm(name) {
return new OntologyTerm(name);
}
}
})();
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