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![SOME QUERIES
// Find all the jobs with skill as mongodb
db.jobs.find({"skills":"mongodb"})
// Find all the jobs with python as skill and
near to given location
db.jobs.find({"lngLat":{$near :
[139.69 , 35.68]},
"skills":"python"})
// Find all the python or mongodb jobs
near to given location
db.jobs.find({"lngLat":{$near :
[139.69 , 35.68]},
"skills":{$in :
["mongodb","python"]}})
25](https://image.slidesharecdn.com/javaeemongodbapplicationsinthecloud-140131034615-phpapp02/85/Java-ee-mongo-db-applications-in-the-cloud-25-320.jpg)
![HOW TO MAKE IT WORK
1) Put your coordinates into an array
{ loc : [ 50 , 30 ] } //SUGGESTED OPTION
{ loc : { x : 50 , y : 30 } }
{ loc : { foo : 50 , y : 30 } }
1) { loc : { lon : 40.739037, lat: 73.992964 } }
2) Make a 2d index
db.places.ensureIndex( { loc : "2d" } )
3)
34
If you use latitude and longitude as your coordinate system, always
store longitude first. MongoDB’s 2d spherical index operators only
recognize [ longitude, latitude] ordering.](https://image.slidesharecdn.com/javaeemongodbapplicationsinthecloud-140131034615-phpapp02/85/Java-ee-mongo-db-applications-in-the-cloud-34-320.jpg)
![SOME QUERIES
// Find all the jobs with skill as mongodb
db.jobs.find({"skills":"mongodb"})
// Find all the jobs with python as skill and
near to given location
db.jobs.find({"lngLat":{$near :
[139.69 , 35.68]},
"skills":"python"})
// Find all the python or mongodb jobs
near to given location
db.jobs.find({"lngLat":{$near :
[139.69 , 35.68]},
"skills":{$in :
["mongodb","python"]}})
25](https://image.slidesharecdn.com/javaeemongodbapplicationsinthecloud-140131034615-phpapp02/75/Java-ee-mongo-db-applications-in-the-cloud-25-2048.jpg)
![HOW TO MAKE IT WORK
1) Put your coordinates into an array
{ loc : [ 50 , 30 ] } //SUGGESTED OPTION
{ loc : { x : 50 , y : 30 } }
{ loc : { foo : 50 , y : 30 } }
1) { loc : { lon : 40.739037, lat: 73.992964 } }
2) Make a 2d index
db.places.ensureIndex( { loc : "2d" } )
3)
34
If you use latitude and longitude as your coordinate system, always
store longitude first. MongoDB’s 2d spherical index operators only
recognize [ longitude, latitude] ordering.](https://image.slidesharecdn.com/javaeemongodbapplicationsinthecloud-140131034615-phpapp02/75/Java-ee-mongo-db-applications-in-the-cloud-34-2048.jpg)
Uploaded byShekhar Gulati
Java(ee) mongo db applications in the cloud
This document provides an agenda and summary for a workshop on developing MongoDB applications on OpenShift presented by Shekhar Gulati. The agenda includes getting started with OpenShift, developing a location-aware Java EE application using JAX-RS and CDI for REST services, and MongoDB for the database. The document discusses OpenShift, JAX-RS, CDI, and MongoDB concepts. It also outlines code samples and steps to create and deploy a sample Twitter-like application on OpenShift that supports creating, finding, and geo-searching statuses.
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Java(ee) mongo db applications in the cloud
- 1. Java(EE)OPENSHIFT MongoDB Applications in theCloud Workshop PRESENTED BY Shekhar Gulati
- 2. WHO AM I? • • • • • Shekhar Gula+ -‐-‐ OpenShi1 Developer Evangelist Java / JavaScript / Python / NoSQL / Cloud Guy TwiEer Handle : shekhargula* Github : h,ps://github.com/shekhargula* Author of 30 technologies in 30 days blog series h,ps://www.openshi9.com/blogs/learning-‐30-‐ technologies-‐in-‐30-‐days-‐a-‐developer-‐challenge
- 3. AGENDA l Get started with OpenShi1 l Develop a loca+on aware applica+on - Java EE 6 – Middleware l JAX-‐RS 1.1 – Java API for REST WS l CDI – Context and Dependency Injec+on - Eclipse Kepler – IDE - MongoDB – Database - OpenShi1 – Deployment choice http://sharemylocation-shekhargulati.rhcloud.com/
- 4.
- 5.
- 6. OpenShift is PaaS by RedHat Multi-language, Auto-Scaling, Self-service, Elastic, Cloud Application Platform
- 7. WHY OPENSHIFT? l l Supports MongoDB , PostgreSQL ,and MySQL Mul+-‐language support. Supports Java, Node.js, Perl, Python, PHP and Ruby l Extensible via DIY and cartridges l No need to learn anything new l Open source – OpenShi1 Origin l Scalable l FREE! l Produc+on Ready
- 8.
- 9. FLAVORS OF OPENSHIFT Open Source Project Public Cloud Service origin Onpremise orPrivate Cloud Software
- 10. OPENSHIFT – GETTING STARTED Goto https://openshift.redhat.com/app/account/new Promo code is JUDCON-IN14 Verify Email 10
- 11. TOOLS REQUIRED 1. Eclipsefor Java EE (Kepler) 2. Git 3. Modern browser 11
- 12. LAB 1 :HELLO OPENSHIFT 1. Install OpenShift Eclipse plugin 2. Create new application with JBoss EAP and MongoDB cartridges. 1. Sign up for OpenShift(if not already) 2. Create domain name or namespace 3. Upload SSH keys to OpenShift 4. Fill application creation wizard 5. Finish 3. Show OpenShift Explorer View and Server’s View 4. Make a change in index.html 1. 2. 12 Commit the change using Git Staging view Publish the change
- 13. LAB 2 :HOT DEPLOYMENT 1. Right click on your project and then go to OpenShift > Configure Markers 2. Choose Hot Deploy marker 3. Commit to git repository 4. Go to servers view and publish your changes. 13
- 14. LAB 3 :SET UP JAX RS 14
- 15. LAB 3 :REST INTRODUCTION 1. HTTP used right 2. Defines set of RESTful constraints 1. Everything is a resource 1. 2. Eg. Post , Tweet , User , etc. Every resource has an identifier 1. Eg. http://api/twitter.com/tweets/1000011111 3. Resource can have multiple representations 1. JSON , XML , YAML , etc. 4. All resources expose a uniform interface 1. GET , POST , PUT , DELETE 15
- 16. LAB 3 JAX-RSINTRODUCTION 1. Java API for REST Services 2. POJO based 3. Annotation heavy 4. HTTP Centric 5. Format independent 6. Container independent 7. Included with Java EE 6 In this workshop we will be talking about JAX-RS 1.1 16
- 17. LAB 3 :SET UP JAX RS 1. Update to Java 7 2. Delete web.xml 3. Update Maven war plugin to 2.3 4. Create JAX-RS configuration class. 5. Write PingResource 17
- 18. LAB 3 :ADDING GIT REMOTE git remote add upstream -m master https://github.com/ shekhargulati/sharemylocation-demo.git git fetch –all git reset --hard upstream/lab3 18
- 19. LAB 4 :CONFIGURE CDI AND MONGODB 19
- 20. CDI 1. CDI standsfor Context and Dependency Injection 2. CDI simplifies and sanitizes the API for DI and AOP like JPA did for ORM -- CDI Tutorial by Rick Hightower 3. Type safe approach to Dependency Injection 4. Strong typing and loose coupling 5. To configure CDI add beans.xml to 1. WEB-INF of WAR 2. META-INF of JAR 6. Beans can be injected at method , field , or constructor. 20
- 21.
- 22.
- 23. WHAT IS MONGODB l OpenSource NoSQL document datastore – l JSON style documents Schema-less – Each document is heterogeneous, and may have completely unique structure compared to other documents l l Rich query language l Rich documents l Easy to get running l 23 Fast and horizontally scalable Geospatial indexing
- 24. MONGODB TERMINOLOGY Database → Database Table → Collec+on Row → Document Index → Index
- 25. SOME QUERIES // Findall the jobs with skill as mongodb db.jobs.find({"skills":"mongodb"}) // Find all the jobs with python as skill and near to given location db.jobs.find({"lngLat":{$near : [139.69 , 35.68]}, "skills":"python"}) // Find all the python or mongodb jobs near to given location db.jobs.find({"lngLat":{$near : [139.69 , 35.68]}, "skills":{$in : ["mongodb","python"]}}) 25
- 26. LAB 4 :ENABLE CDI AND MONGODB CONFIGURATION 1. Create beans.xml in src/main/WEB-INF folder 2. Create ApplicationScoped bean for configuring MongoDB 3. PingResource writes a document to dummy collection 4. Open Eclipse Remote System Explorer perspective and connect to gear. Right click on project 1. 26 Team > Reset > Remote Tracking > upstream/lab4
- 27. LAB 5 :IMPLEMENT CREATE AND FIND ALL STATUS 1. Create Status domain class 2. Create converter for Status to DBObject and vice versa 3. Create StatusResource with create and find all endpoints. 4. Create ApplicationDao with create and findAll methods. 5. Create Twitter Bootstrap and Backbonejs front end for create and find all functionalities. Right click on project - 27 Team > Reset > Remote Tracking > upstream/lab5
- 28. LAB 6 :IMPLEMENT NEAR AND GEONEAR FEATURES 1. Create findNear and findGeoNear methods in ApplicationDao 2. Create near and geonear search REST endpoints in StatusResource 3. Implement backbone views for search endpoints 4. Create Index 1. db.statuses.ensureIndex({“location”:”2dsphere”}) Right click on project - 28 Team > Reset > Remote Tracking > upstream/lab6
- 29.
- 30.
- 31. STEP 1 :CHOOSE OPENSHIFT TOOLS 31
- 32. STEP 1 :SEARCH JBOSS TOOLS 32
- 33. GEOSPATIAL INDEXING BASICS What isit for? l l l l Find all the MongoDB jobs near me – Proximity Queries Find all the MongoDB jobs within Bangalore – Bounded Queries Find all the MongoDB job at this location – Exact Queries l Supports only two dimensional indexes. l You can only have one geospatial index per collection. By default, 2d geospatial indexes assume longitude and latitude have boundaries of -180 inclusive and 180 non-inclusive (i.e. [-180, 180)) l 33
- 34. HOW TO MAKEIT WORK 1) Put your coordinates into an array { loc : [ 50 , 30 ] } //SUGGESTED OPTION { loc : { x : 50 , y : 30 } } { loc : { foo : 50 , y : 30 } } 1) { loc : { lon : 40.739037, lat: 73.992964 } } 2) Make a 2d index db.places.ensureIndex( { loc : "2d" } ) 3) 34 If you use latitude and longitude as your coordinate system, always store longitude first. MongoDB’s 2d spherical index operators only recognize [ longitude, latitude] ordering.