How to use mongoDB with Solr?

问题:

Is it possible to replicate data from mongoDB to Solr? I'm using ruby + sinatra + mongoid. Or i need to make hooks with after_create, after_update and so on through rsolr?

回答1:

10gen introduced Mongo Connector, which allows to push data into Solr (among others)

http://blog.mongodb.org/post/29127828146/introducing-mongo-connector

From their example:

python mongo_connector.py -m localhost:27217 -t http://localhost:8080/solr

回答2:

Some people integrated Solr with MongoDB with application code listening to the "oplog" of MongoDB. I would recommend implementing something on the application completely decoupled from MongoDB. If you application inserts something into MongoDB then trigger an insertion into Solr etc.

Tailabled cursors might be an option

http://jwage.com/2011/03/16/mongodb-tailable-cursors/

but they only work with capped collections.

回答3:

I am not sure whether its too late. The mongo-jdbc would not work with DIH of Apache Solr, you would need to extend it. I have extended it, and you can use it from here: https://github.com/hrishik/solr-mongodb-dih

You can directly use it with Apache Solr. In that case, DIH config file will look something like below:

<dataConfig>    
    <dataSource name="mongod" type="JdbcDataSource" driver="com.mongodb.jdbc.MongoDriver" url="mongodb://localhost/exampledb"/>
    <document>
    <entity name="nameage" dataSource="mongod" query="select name, price from grocery">
        <field column="name" name="name"/>
        <field column="name" name="id"/> 
        <!-- other fileds -->
    </entity>
    </document> 
</dataConfig>

回答4:

Configure the JDBC flavour of the data import handler using the JDBC driver found at https://github.com/erh/mongo-jdbc -- it supports select, insert, update, and drop. Hope this helps!