seneca-oracle-store
v0.1.2
Published
Seneca data store plugin for Oracle
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seneca-oracle-store
Seneca node.js data-storage plugin for Oracle.
This module is a plugin for the Seneca framework. It provides a storage engine that uses Oracle to persist data. This module is for production use.
The Seneca framework provides an ActiveRecord-style data storage API. Each supported database has a plugin, such as this one, that provides the underlying Seneca plugin actions required for data persistence.
Support
If you're using this module, feel free to contact me on twitter if you have any questions! :) @paolochiodi
Current Version: 0.1.2
Tested on: Node 0.10.29, Seneca 0.5.19
Quick example
var seneca = require('seneca')()
seneca.use('oracle-store',{
hostname: "localhost",
port: 1521,
database: "xe", // System ID (SID)
user: "oracle",
password: "oracle"
})
seneca.ready(function(){
var apple = seneca.make$('fruit')
apple.name = 'Pink Lady'
apple.price = 0.99
apple.save$(function(err,apple){
console.log( "apple.id = "+apple.id )
})
})
Note: this module support connecting to oracle databases with tns strings. For more information, checkout the oracle module
Install
npm install seneca
npm install seneca-oracle-store
Note: seneca-oracle-store
depends on module oracle
to connect to oracle databases. In order to compile and install the oracle
module you should have installed oracle instanst client and its sdk. Fore more information see the oracle module docs on installation
Usage
You don't use this module directly. It provides an underlying data storage engine for the Seneca entity API:
var entity = seneca.make$('typename')
entity.someproperty = "something"
entity.anotherproperty = 100
entity.save$( function(err,entity){ ... } )
entity.load$( {id: ...}, function(err,entity){ ... } )
entity.list$( {property: ...}, function(err,entity){ ... } )
entity.remove$( {id: ...}, function(err,entity){ ... } )
Queries
The standard Seneca query format is supported:
entity.list$({field1:value1, field2:value2, ...})
implies pseudo-queryfield1==value1 AND field2==value2, ...
- you can only do AND queries. That's all folks. Ya'll can go home now. The Fat Lady has sung.
entity.list$({f1:v1,...,sort$:{field1:1}})
means sort by field1, ascendingentity.list$({f1:v1,...,sort$:{field1:-1}})
means sort by field1, descendingentity.list$({f1:v1,...,limit$:10})
means only return 10 resultsentity.list$({f1:v1,...,skip$:5})
means skip the first 5entity.list$({f1:v1,...,fields$:['field1','field2']})
means only return the listed fields (avoids pulling lots of data out of the database)- you can use sort$, limit$, skip$ and fields$ together
Native Driver
As with all seneca stores, you can access the native driver, in this case,
the node-oracle
connection
object using entity.native$(function(err,connectio){...})
.
How to write a SQL query using node-oracle driver:
var query = 'SELECT * FROM "orders WHERE "cust_id"=:1 AND "total" > :2';
orders_ent.native$(function(err, connection){
connection.execute(query, ['customer', 1000], function(err, list) {
if(err) return done(err);
console.log("Found records:", list);
});
}); // end native$
Note on table and column names
With Oracle, unquoted table and column names are case insensitive and treated as upper case. In order to consistently retrieve entity property names from database oracle-store quotes all names, meaning that you should quote names when creating tables and columns and use name whose case match exactly the entity property names.
Unsupported features
At the moment there is no support for:
- connection pool
Test
See the test README
TODO
- add connection pool