New to MongoDB? This talk will introduce the philosophy and features of MongoDB. We’ll discuss the benefits of the document-based data model that MongoDB offers by walking through how one can build a simple app to store books. We’ll cover inserting, updating, and querying the database of books. This session will jumpstart your knowledge of MongoDB development, providing you with context for the rest of the day's content.

1. FIRST STEPS WITH
MONGO
AND JAVA
JUSTIN LEE
MEMBER OF TECHNICAL STAFF
@ MONGODB.COM
http://antwerkz.com @evanchooly

2. WHAT IS MONGO?
Name derives from "humongous" which mean big
It is a scalable, high-performance, open source NoSQL database
Document oriented
Fully indexable
Replication and HA
Map Reduce and Aggregation framework
GridFS

3. DOCUMENT ORIENTED
In an RDBMS, one entity is typically mapped across multiple
cells in one row of a table
sometimes multiple objects with embedded entities
Documents stored in json-style documents
http://bsonspec.org
actually BSON ( )
BSON adds some "extra" information to documents, like
length prefixes, that make traversal efficient.

4. WHAT DOES A DOCUMENT LOOK LIKE?
db.users.find().pretty()
{ "_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"
}
]}

8. COMPARISONS
JAVA DRIVER
MORPHIA

9. GETTING STARTED
https://www.mongodb.org/downloads
<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>

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

11. 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()
= == > >= < <= != <> mod
in nin all exists elem size within near

12. 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();

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

14. 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*/);

15. 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);

16. CODE SAMPLES

17. LINKS
http://www.mongodb.org/
https://github.com/mongodb/morphia
https://github.com/evanchooly/mongo-java

18. FIRST STEPS WITH
MONGO
AND JAVA
JUSTIN LEE
MEMBER OF TECHNICAL STAFF
@ MONGODB.COM
http://antwerkz.com @evanchooly