all_items.js

#!/usr/bin/env node
var fs = require('fs');

var allItems = [];


//a little function to help us read the file since we have three of them
var readItems = function(filename,callback){
	console.log("Loading ",filename)
	fs.readFile(filename, function (err, data) {
		//split the file by line breaks and parse each line as a json object and insert it into our big array
		data.toString().split("\n").forEach(function(line){		
			if (line.length>0)
				allItems.push(JSON.parse(line));
		});
		callback();
	});
}



readItems('../../../items/pd_items_1.ndjson',function(){
	readItems('../../../items/pd_items_2.ndjson',function(){
		readItems('../../../items/pd_items_3.ndjson',function(){
			readItems('../../../items/pd_items_4.ndjson',function(){

				allItems.forEach(function(item){			

					//lets print everything possible in the item!

					//the title of the item, there can only be one title
					console.log(item['title']);


					// //the uuid is the unique identifier for the item
					// console.log(item['UUID']);

					// //the databaseID is another identifier for the item use in our database
					// console.log(item['databaseID']);



					// //there can be multiple 0 or more alternative titles
					// for (var altTitle in item['alternativeTitle']){
					// 	console.log(altTitle);
					// }


					// //contributor is a dictonary with these possible keys
					// item['contributor'].forEach(function(contributor){

					// 	//the name
					// 	console.log(contributor['contributorName']);

					// 	//the type, person, corporation, etc
					// 	console.log(contributor['contributorType']);

					// 	//the role they had in this item, such as author,Printmaker, Illustrator etc.
					// 	contributor['contributorRole'].forEach(function(role){
					// 		console.log(role);
					// 	});						

					// 	//Their URI, a linked data identifier
					// 	console.log(contributor['contributorURI']);
					// });

					// //the dates associated with this item
					// item['date'].forEach(function(date){
					// 	console.log(date);
					// });

					// //the "start" year of this item
					// console.log(item['dateStart']);

					// //the "end" year of this item
					// console.log(item['dateEnd']);

					// //the languages for this item
					// item['language'].forEach(function(language){
					// 	console.log(language);
					// });

					// //the description for this item
					// item['description'].forEach(function(description){
					// 	console.log(description);
					// });

					// //the notes can have:
					// item['note'].forEach(function(note){

					// 	//the type of the note
					// 	console.log(note['type']);

					// 	//and the text of the note
					// 	console.log(note['text']);
					// });


					// //the subject headings of the item can have:
					// item['subjectTopical'].forEach(function(subjectTopical){

					// 	//the text of the subject
					// 	console.log(subjectTopical['text']);

					// 	//and the URI, or linked data identifier
					// 	console.log(subjectTopical['URI']);
					// });

					// item['subjectName'].forEach(function(subjectName){
					// 	console.log(subjectName['text']);
					// 	console.log(subjectName['URI']);
					// });

					// item['subjectGeographic'].forEach(function(subjectGeographic){
					// 	console.log(subjectGeographic['text']);
					// 	console.log(subjectGeographic['URI']);
					// });

					// item['subjectTemporal'].forEach(function(subjectTemporal){
					// 	console.log(subjectTemporal['text']);
					// 	console.log(subjectTemporal['URI']);
					// });

					// item['subjectTitle'].forEach(function(subjectTitle){
					// 	console.log(subjectTitle['text']);
					// 	console.log(subjectTitle['URI']);
					// });

					// //the resource types for the item
					// item['resourceType'].forEach(function(resourceType){
					// 	console.log(resourceType);
					// });

					// //the genres for the item
					// item['genre'].forEach(function(genre){
					// 	console.log(genre['text']);
					// 	console.log(genre['URI']);
					// });


					// //bNumber, our catalog number (catalog.nypl.org/record=b########)
					// console.log(item['identifierBNumber']);

					// //other identfiers
					// console.log(item['identifierAccessionNumber']);
					// console.log(item['identifierCallNumber']);
					// console.log(item['identifierISBN']);
					// console.log(item['identifierISSN']);
					// console.log(item['identifierInterviewID']);
					// console.log(item['identifierPostcardID']);
					// console.log(item['identifierLCCN']);
					// console.log(item['identifierOCLCRLIN']);


					// //the extents for the item
					// item['physicalDescriptionExtent'].forEach(function(physicalDescriptionExtent){
					// 	console.log(physicalDescriptionExtent);
					// });

					// //the form for the item
					// item['physicalDescriptionForm'].forEach(function(physicalDescriptionForm){
					// 	console.log(physicalDescriptionForm);
					// });

					// //the publishers for the item
					// item['publisher'].forEach(function(publisher){
					// 	console.log(publisher);
					// });

					// //the publisher locations for the item
					// item['placeOfPublication'].forEach(function(placeOfPublication){
					// 	console.log(placeOfPublication);
					// });

					// //the collection UUID, which has its data in the collections.json
					// console.log(item['collectionUUID']);

					// //the container UUID, which is a sub-collection grouping of items
					// console.log(item['containerUUID']);

					// //the collection title
					// console.log(item['collectionTitle']);

					// //the container title
					// console.log(item['containerTitle']);

					// //The hierarchy of where this item is found in the collection, collection followed by containers seperated with "/""
					// console.log(item['parentHierarchy']);

					// //the count of the nubmer of images or captures for this item
					// console.log(item['numberOfCaptures']);
					
					// //the the URLs for each capture
					// item['captures'].forEach(function(capture){
					// 	console.log(capture);
					// })

					// //the the URLs for this item on the NYPL website
					// console.log(item['digitalCollectionsURL']);

				})
			})
		})
	})
})