I'm newbie in mongo database ,I want to know if can create database and tables with hibernate.hbm2ddl.auto values create,update,validate.I created Documents classes but Database didn't created.
Well, you cannot use the regular hibernate with NoSQL DBs like MongoDB. You can try Hibernate OGM or Morphia. Personally, I have used Morphia and it does it's job.
Morphia - https://github.com/mongodb/morphia
I assume you use Hibernate OGM to access MongoDB. In this case specify the following property to have the database automatically created:
hibernate.ogm.datastore.create_database=true
You can find a list with all available options in the reference guide. You also might be interested in issue OGM-571 which is about honoring the existing hbm2ddl setting.
Related
I would like to create collection where only one entity should be stored.
Questions:
Is it possible to create restrictions for this collection on db level?
What are the best practices for CRUD application dealing with such collection?
You can use schema validation to be sure that new documents will respect your schema. This feature appears in 3.2, but was modified since 3.6 with use of JSON schema. Check the right doc version.
I am new to MongoDB so please bear with me. I have a MongoDB that can be updated from two places - from an admin panel in PHP and from a deployed server using Morphia. My question is that if MongoDB is updated from the admin panel after the datastore is created using Morphia, then how do I get the updated values from the db into the data store?(I have tried to search for this but all queries just point to how to update the data store in Morphia. It could be that I am formatting the query wrong.) Does it automatically get updated in the datastore? or Do I have to keep discarding the existing datastore and create a new one?In that case the question arises that what would be the best way to do that?
Also, how would saves from Morphia and updates from the admin panel be handled so that there is no conflict?
The Datastore doesn't cache anything. It's simply a conduit through which to execute database operations. If you query very Morphia after updating from your PHP app, you'll see your new data just fine. You don't need to create a new Datastore each time.
I use doctrine ODM to persist and load documents from my Mongo DB. I followed this guide: https://doctrine-mongodb-odm.readthedocs.org/en/latest/tutorials/getting-started.html
Following this guide all documents get stored in the database "doctrine" by default. But what if I have my own database? How do I select the database? I couldn't find anything use in the documentation nor google.
you can use the Configuration class.
$config->setDefaultDB('mydbname');
In hibernate,There is property hibernate.hbm2ddl.auto for Relational Database.
The hibernate.hbm2ddl.auto option turns on automatic generation of database
schemas directly into the database.
In Relational Database we can use this property.
Is there any property in hibernate for MongoDB through which we can directly generate MongoDB schemas into Mongo server?
What are comparable database like Mongo DB?
We are trying to evaluate Mongo DB and find the best database for a enterprise level application.
Is there any developer UI and admin UI available for MongoDB like SQL Plus/Toad etc for Oracle?
MongoDB is a document-oriented database, so instead of a row of data, you have a document. In MonogDB's case, its a JSON document. Apache's CouchDB is another document database that stores data in JSON format although there are subtle differences between the two.
Choosing between the two depends on your use case. Sometimes CouchDB is better than MongoDB.
Checkout this comparative to see the differences.
MongoDB is what is known as a NoSQL database, which is I assume why you're interested in it. You can find a list of other NoSQL databases at the below links:
http://en.wikipedia.org/wiki/NoSQL
http://nosql-database.org/
MongoDB does not include a GUI-style administrative interface; however, there are numerous community projects that provide admin UIs for MongoDB:
http://www.mongodb.org/display/DOCS/Admin+UIs
I like document oriented databases like MongoDB very much. Because they are shema-less. You can just insert find and update your records without first having to define a schema. But you can define one in your own Project logic. You have more freedom.
It would be nice to have an embeddable NoSQL database. Like SQLite but document oriented.
Currently I do develop one in Java. (You can also use it withhin an Android App):
https://github.com/neo-expert/thingdb
I am quite happy with MongoVue. I've made a couple of videos about this here.