This talk introduces how to build MongoDB applications with Spring Data MongoDB on Cloud Foundry. Spring Data provides rich support for easily building applications that work on multiple data stores.

1. Using Spring and MongoDB with
CloudFoundry
Josh Long
@starbuxman
Spring Developer Advocate
SpringSource, a division of VMware
© 2009 VMware Inc. All rights reserved

2. About Josh Long
Spring Developer Advocate
@starbuxman
josh.long@springsource.com
th
si
is
im
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!
Free Book!
SpringSource.org/roo
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3. Spring
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4. Spring’s aim:
bring simplicity to Java development
data
web tier integration
batch access
& service tier & mobile
processing / NoSQL /
RIA messaging
Big Data
The Spring framework
the cloud: lightweight traditional
CloudFoundry WebSphere
tc Server
VMForce JBoss AS
Tomcat
Google App Engine WebLogic
Jetty
Amazon Web Services (on legacy versions, too!)
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5. Spring Data
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6. Data Access Challenge #1: Scale Horizontally
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7. Data Access Challenge #2: Heterogeneous data access needs
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8. New demands on data
access
•... until we needed
inexpensive horizontal
scaling for some large web
based applications ...
• ... and we needed to
deploy our apps in the
cloud ...
* image courtesy of Bitcurrent 8

9. NoSQL offers several data store categories
Key-Value Column Document Graph
Redis, Cassandra, MongoDB Neo4J
Riak HBase
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10. NoSQL offers several data store categories
Key-Value Column Document Graph
MongoDB
(who cares about the rest?)
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11. Spring Framework
built-in data access support
•Transaction abstractions
•Common data access exception hierarchy
•JDBC - JdbcTemplate
•ORM - Hibernate, JPA support
•OXM - Object to XML mapping
•Serializer/Deserializer strategies (Spring 3.0)
•Cache support (Spring 3.1)
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12. http://www.springsource.org/spring-data
•Spring Data Key-value
•Spring Data Document
•Spring Data Graph
•Spring Data Column
•Spring Data Blob
•Spring Data JPA Repository / JDBC Extensions
•Spring Gemfire / Spring Hadoop ...
•Grails iNcOnSeQuentiaL
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13. Spring Data Building Blocks
•Low level data access APIs
✓MongoTemplate, RedisTemplate ...
•Object Mapping (Java and GORM)
•Cross Store Persistence Programming model
•Generic Repository support
•Productivity support in Roo and Grails
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14. Spring MongoDB
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15. Spring Data Document
Mongo
•MongoTemplate interface for mapping Mongo documents
•MongoConverter
•SimpleMongoConverter for basic POJO mapping support
•Leverage Spring 3.0 TypeConverters and SpEL
•Exception translation
•Advanced Mapping(@Document, @Id, @DbRef)
•Annotation based
•MongoRepository
•Built on Hades support for JPA Repositories
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16. Simple Domain Class
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17. Mongo Template
Direct Usage of the Mongo Template:
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18. Mongo Template
Direct Usage of the Mongo Template:
Insert into “Person”
Collection
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19. Mongo Template
Direct Usage of the Mongo Template:
findOne using query: { "name" : "Joe"}
in db.collection: database.Person
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20. Mongo Template
Direct Usage of the Mongo Template:
Dropped collection [database.person]
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21. Generic Repository
Interface for generic CRUD operations on a repository for a specific type
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22. Paging and Sorting Repository
Paging and Sorting Repository: Extends “CrudRepository”
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23. Paging and Sorting Repository
Paging and Sorting Repository: Extends “CrudRepository”
Usage:
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24. Custom Repository
Custom Repository:
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25. Custom Repository
Custom Repository:
Keywords :
Keyword Sample Logical result
GreaterThan findByAgeGreaterThan(int age) {"age" : {"$gt" : age}}
LessThan findByAgeLessThan(int age) {"age" : {"$lt" : age}}
Between findByAgeBetween(int from, int to) {"age" : {"$gt" : from, "$lt" : to}}
NotNull findByFirstnameNotNull() {”firstname" : {"$ne" : null}}
Null findByFirstnameNull() {”firstname" : null}
Like findByFirstnameLike(String name) "firstname" : firstname} (regex)
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26. Cross Store
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27. JPA and MongoDB
JPA “Customer” with a “SurveyInfo” Document
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28. Using a Cross-Store
Saving a Customer with a SurveryInfo
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29. Using a Cross-Store
Saving a Customer with a SurveryInfo
Create Customer
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30. Using a Cross-Store
Saving a Customer with a SurveryInfo
Create SurveyInfo
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31. Using a Cross-Store
Saving a Customer with a SurveryInfo
Assign Survey to Customer
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32. Using a Cross-Store
Saving a Customer with a SurveryInfo
Save
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33. Using a Cross-Store
Saving a Customer with a SurveryInfo
Save
Mongo Document:
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34. Cloud Foundry
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35. Cloud Foundry
 github.com/cloudfoundry
 cloudfoundry.org
 @cloudfoundry
 Supports:
• Languages: Java, Scala, Node.js, Grails, Ruby/Rails/Sinatra, etc.
• Services: MongoDB, Redis, MySQL, PostgreSQL, RabbitMQ
 ecosystem forks:
• AppFog - PHP
• Stacato: Python, Perl, etc., from ActiveState
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36. Choice of clouds
.js
ce
rfa
Ap
te
Data Private
p
In
lic
Services
Clouds
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io
vid
n
Public
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Msg
Pr
Services
r
Clouds
vic
d
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In
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Micro
te
Other
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Services
Clouds
fa
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37. Choice of clouds
.js
ce
rfa
Ap
te
Data Private
p
In
lic
Services
Clouds
…
er
at
io
vid
n
Public
o
Se
Msg
Pr
Services
r
Clouds
vic
d
ou
e
In
.COM
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Micro
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Other
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Services
Clouds
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38. Setting up Cloud Foundry Demo
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39. Accessing Services Bound to Cloud Foundry (producer)
private String mongoDatabaseServiceName = "survey-mongo";
@Bean
public CloudEnvironment cloudEnvironment() {
return new CloudEnvironment();
}
@Bean
public MongoServiceInfo mongoServiceInfo() {
return cloudEnvironment().getServiceInfo(
mongoDatabaseServiceName, MongoServiceInfo.class);
}
@Bean
public MongoDbFactory mongoDbFactory() {
MongoServiceCreator msc = new MongoServiceCreator();
MongoDbFactory db = msc.createService(mongoServiceInfo());
}
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40. Accessing Services Bound to Cloud Foundry (consumption)
@Inject private Mongo mongo ;
@Inject private MongoTemplate mongoTemplate;
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41. Cloud Foundry MongoDB Demo
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42. Where to Find More
 Spring Data Project:
http://bit.ly/spring-data
 CloudFoundry Samples:
http://bit.ly/cloudfoundry-samples
 MicroCloud Foundry for Spring Developers
http://bit.ly/mcf4spring
 Spring Data Mongo on Cloud Foundry (webinar, 12/01/2011)
 http://bit.ly/spring-mongo-cloudfoundry
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