SQL

Overview

The SQL support is added by JoSQL(http://josql.sourceforge.net/) and is primarily used for performing SQL queries on in-memory objects. The SQL support is part of the camel-josql module.

Adding the JoSQL module

To use Ruby in your routes you need to add a dependency on camel-josql to your project as shown in Example 19, “Adding the camel-script dependency”.

Example 19. Adding the camel-script dependency

<!-- Maven POM File -->
...
<dependencies>
  ...
  <dependency>
    <groupId>org.apache.camel</groupId>
    <artifactId>camel-josql</artifactId>
    <version>${camel-version}</version>
  </dependency>
  ...
</dependencies>

Variables

Table 12, “SQL variables” lists the variables that are accessible when using SQL.

Table 12. SQL variables

Name	Type	Description
`exchange`	`org.apache.camel.Exchange`	The current Exchange
`in`	`org.apache.camel.Message`	The IN message
`out`	`org.apache.camel.Message`	The OUT message
`property`	`Object`	the Exchange property whose key is `property`
`header`	`Object`	the IN message header whose key is `header`
`variable`	`Object`	the variable whose key is `variable`

Example

Example 20, “Route using SQL” shows a route that uses SQL.

Example 20. Route using SQL

<camelContext>
  <route>
    <from uri="direct:start"/>
    <setBody>
      <langauge langauge="sql">select * from MyType</langauge>
    </setBody>
    <to uri="seda:regularQueue"/>
  </route>
</camelContext>