Prepared Map for sql-parameter-source-factory

[jakub.kettner]

Hello,
I have question regarding sql-parameter-source-factory.
I have, lets say this Pojo:

public class Pojo1 {
	private var1;
        private var2;
 // getters and setters
}

In reality my Pojo has more than 40 variables - which is reason of my question.
Now I send my pojo into channel as Payload of the message and in my integration context simply do:

<int-jdbc:outbound-channel-adapter
	data-source="targetDb" 
	channel="output" 
	query="INSERT INTO POJO1
 	VALUES(:var1,:var2)"
 	sql-parameter-source-factory="spelSource">
</int-jdbc:outbound-channel-adapter>

<bean id="spelSource" class="org.springframework.integration.jdbc.ExpressionEvaluatingSqlParameterSourceFactory">
	<property name="parameterExpressions">
			<map>
				<entry key="var1" value="payload.getVar1()"/>
				<entry key="var2" value="payload.getVar2()"/>
			</map>
		</property>
	</bean>

It works good and I like this logic, but is there any way how to achieve the same, if I have this parameterExpressions Map already prepared (and this Map is my Message Payload) so I dont not want to create it integration context? E.g. to do something like this:

<bean id="spelSource" class="org.springframework.integration.jdbc.ExpressionEvaluatingSqlParameterSourceFactory"> 
<property name="parameterExpressions" ref=":payload">
</property>
</bean>

This one is not working of course.

Thak you,
Jakub