JDBC

JDBC Component

The jdbc component enables you to access databases through JDBC, where SQL queries and operations are sent in the message body. This component uses the standard JDBC API, unlike the SQL Component component, which uses spring-jdbc.

URI format

jdbc:dataSourceName[?options]

This component only supports producer endpoints.

You can append query options to the URI in the following format, ?option=value&option=value&...

Options

Result

The result is returned in the OUT body as an ArrayList<HashMap<String, Object>>. The List object contains the list of rows and the Map objects contain each row with the String key as the column name.

Note: This component fetches ResultSetMetaData to be able to return the column name as the key in the Map.

Message Headers

Samples

In the following example, we fetch the rows from the customer table.

First we register our datasource in the Camel registry as testdb:

Then we configure a route that routes to the JDBC component, so the SQL will be executed. Note how we refer to the testdb datasource that was bound in the previous step:

Or you can create a DataSource in Spring like this:

We create an endpoint, add the SQL query to the body of the IN message, and then send the exchange. The result of the query is returned in the OUT body:

Sample - Polling the database every minute

If we want to poll a database using the JDBC component, we need to combine it with a polling scheduler such as the Timer or Quartz etc. In the following example, we retrieve data from the database every 60 seconds:

from("timer://foo?period=60000").setBody(constant("select * from customer")).to("jdbc:testdb").to("activemq:queue:customers");

• SQL