Create the Blueprint configuration

Blueprint provides a dependency injection framework for OSGi. The metaverse has two injection points. It has a reference list of all services registered in the container for both the IStepAnalyzer interfaces and the IJobEntryAnalyzer interfaces. When the container detects a new service which provides an implementation of one of those interfaces, the metaverse sees it and adds it to its set of known analyzers. The next time a step which implements the particular class you care about, such as DummyTransMeta in our example, is analyzed, your new StepAnalyzers will be used and your override methods will be called.

Create a blueprint.xml file in src/main/resources/OSGI-INF/blueprint/ folder. (Create the folders, if needed.)

<?xml version="1.0" encoding="UTF-8"?>
<blueprint xmlns="http://www.osgi.org/xmlns/blueprint/v1.0.0"
           xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
           xsi:schemaLocation="
             http://www.osgi.org/xmlns/blueprint/v1.0.0 http://www.osgi.org/xmlns/blueprint/v1.0.0/blueprint.xsd
             ">

	<!-- Define a bean for our new step analyzer -->
	<bean id="dummyStepAnalyzer"/>

	<!--
  	  Define our analyzer as a service. This will allow it to be automatically added to the reference-list ultimately used
  	  by the TransformationAnalyzer to determine if there is a custom analyzer for a particular BaseStepMeta impl
  	  (DummyTransMeta in this case).
	-->
	<service id="dummyStepAnalyzerService"
         interface="org.pentaho.metaverse.api.analyzer.kettle.step.IStepAnalyzer"
         ref="dummyStepAnalyzer"/>


</blueprint>