ItemWriters Dynamically

[anish555]

How to create ItemWriter pool with n itemwriters where n being set dynamically through job parameters.

[sansun2111]

Anish,

Spring factory-bean/factory-method would be one of the things you can try .

Sample Code :

public class ReaderFactory implements ApplicationContextAware, FactoryBean  {

	protected ApplicationContext applicationContext;
	protected String reader;

	public void setReader( String reader)
	{
		this.reader = reader;
	}

	public Class getObjectType() {
		return AbstractItemCountingItemStreamItemReader.class; 
	}

	public boolean isSingleton() {
		return false;
	}

	public Object getObject() {

		
		if (reader != null) {
			System.out.println("READER"+reader);
			Object reader1 = applicationContext.getBean(reader);
			
			return reader1;
		}
		else return null;	
	}

	public void setApplicationContext(ApplicationContext applicationContext)
			throws BeansException {
		this.applicationContext = applicationContext;
		
	}

}

XML CONFIG FILE:

<bean id="EDIJob" parent="simpleJob" >
		<property name="steps"  >
			<bean id="step1" parent="simpleStep" >
				<property name="streams" >
					<list>
					   										               
                                        </list>

				</property>
				
				<property name="itemReader" ref="reader" />
				<property name="itemWriter" ref="writer" />


				
				
			</bean>
		</property>
	</bean>



<bean id="reader" class="com.abcbs.EDI837.common.ReaderFactory"  >
	
	<property name="reader" value="#{jobParameters['reader.name']}"/>		
	</bean>