http://antwerkz.com @evanchooly

FIRST STEPS WITHMONGO

AND JAVAJUSTIN LEE

MEMBER OF TECHNICAL STAFF@ MONGODB.COM

WHAT IS MONGO?Name derives from "humongous" which mean bigIt is a scalable, high-performance, open source NoSQL databaseDocument orientedFully indexableReplication and HAMap Reduce and Aggregation frameworkGridFS

DOCUMENT ORIENTEDIn an RDBMS, one entity is typically mapped across multiplecells in one row of a table

sometimes multiple objects with embedded entitiesDocuments stored in json-style documents

actually BSON ( )BSON adds some "extra" information to documents, likelength prefixes, that make traversal efficient.

http://bsonspec.org

db.users.find().pretty()

WHAT DOES A DOCUMENT LOOK LIKE?

{"_id" : ObjectId("50fdb55a18c650918ee414be"),"className" : "com.antwerkz.mongo.model.User","firstName" : "Jules","lastName" : "Winnfield","email" : "jules@hotmail.com","addresses" : [ { "street" : "1858 N Vermont Ave", "city" : "Los Angeles", "state" : "CA", "zip" : "90027" }]}

COMPARISONSJAVA DRIVER

MORPHIA

https://www.mongodb.org/downloads

GETTING STARTED<dependency> <groupId>org.mongodb</groupId> <artifactId>mongo-java-driver</artifactId> <version>2.12.3</version></dependency>

<dependency> <groupId>org.mongodb.morphia</groupId> <artifactId>morphia</artifactId> <version>0.108</version></dependency>

QUERIESdb.product_orders.find({ fulfilled : true, total : { $gte : 5000.0 }}).sort({total : 1})db.product_orders.find({ $or : [ { size : { $lte : 3 } }, { fulfilled : false} ] })

db.product_orders.find({ fulfilled : true, total : { $gte : 5000.0 }}).sort({total : 1})

BasicDBObject query = new BasicDBObject("fulfilled", true) .append("total", new BasicDBObject("$gte", 5000.0));DBCursor cursor = db.getCollection(PRODUCT_ORDERS).find(query) .sort(new BasicDBObject("total", 1));while (cursor.hasNext()) { orders.add(new ProductOrder(cursor.next()));}

ds.createQuery(ProductOrder.class) .field("fulfilled").equal(true) .filter("total >=", 5000.0)// .field("total").greaterThanOrEq(5000.0) <-- can be done either way .order("total").asList()

= == > >= < <= != <> modin nin all exists elem size within near

db.product_orders.find({ $or : [ { size : { $lte : 3 } }, { fulfilled : false } ]})

BasicDBList list = new BasicDBList();list.add(new BasicDBObject("fulfilled", false));list.add(new BasicDBObject("size", new BasicDBObject("$lte", 3)));DBCursor cursor = db.getCollection("product_orders") .find(new BasicDBObject("$or", list));while (cursor.hasNext()) { orders.add(new ProductOrder(cursor.next()));}

Query<ProductOrder> query = ds.createQuery(ProductOrder.class);query.or( query.criteria("fulfilled").equal(false), query.criteria("size").lessThanOrEq(3));return query.asList();

UPDATESdb.product_orders.update({ size : 3 }, { $set : { total : 400 } } )db.product_orders.update({}, { $push : { baubles : { color : "red" } }} )

db.product_orders.update({ size : 3 }, { $set : { total : 400 } } )BasicDBObject query = new BasicDBObject("size", 3);BasicDBObject update = new BasicDBObject("$set", new BasicDBObject("total", 400));DBCollection collection = db.getCollection("product_orders");collection.update(query, update/*, true/false, true/false*/);

Query<ProductOrder> query = ds.createQuery(ProductOrder.class) .filter("size", 3);UpdateOperations<ProductOrder> update = ds.createUpdateOperations(ProductOrder.class) .set("total", 400);ds.update(query, update/* true/false for upsert*/);// ds.updateFirst(query, update/* true/false for upsert*/);

db.product_orders.update({}, { $push : { baubles : { color : "red" } } },false, true )

BasicDBObject update = new BasicDBObject("$push", new BasicDBObject("baubles", new BasicDBObject("color", "red")));db.getCollection(PRODUCT_ORDERS).update(new BasicDBObject(), update, false, true);

UpdateOperations<ProductOrder> update = ds.createUpdateOperations(ProductOrder.class) .disableValidation() .add("baubles", new BasicDBObject("color", "red"), true);ds.update(ds.createQuery(ProductOrder.class), update, false);

CODE SAMPLES

LINKShttp://www.mongodb.org/https://github.com/mongodb/morphiahttps://github.com/evanchooly/mongo-java

http://antwerkz.com @evanchooly

FIRST STEPS WITHMONGO

AND JAVAJUSTIN LEE

MEMBER OF TECHNICAL STAFF@ MONGODB.COM