Add support for 'trigger' attribute.

spring-integration-core/src/test/java/org/springframework/integration/config/TestTrigger.java

@@ -0,0 +1,17 @@
+package org.springframework.integration.config;
+
+import org.springframework.scheduling.Trigger;
+import org.springframework.scheduling.TriggerContext;
+
+import java.util.Date;
+
+/**
+ * @author Marius Bogoevici
+ */
+public class TestTrigger implements Trigger {
+
+    public Date nextExecutionTime(TriggerContext triggerContext) {
+        throw new UnsupportedOperationException();
+    }
+
+}

spring-integration-core/src/test/java/org/springframework/integration/config/xml/PollerParserTests.java

@@ -18,12 +18,14 @@ package org.springframework.integration.config.xml;
 
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertTrue;
 
 import org.junit.Test;
 
 import org.springframework.beans.factory.parsing.BeanDefinitionParsingException;
 import org.springframework.context.ApplicationContext;
 import org.springframework.context.support.ClassPathXmlApplicationContext;
+import org.springframework.integration.config.TestTrigger;
 import org.springframework.integration.context.IntegrationContextUtils;
 import org.springframework.integration.scheduling.PollerMetadata;
 
@@ -88,4 +90,14 @@ public class PollerParserTests {
 		assertEquals(1234, metadata.getReceiveTimeout());
 	}
 
+    @Test
+	public void pollerWithTriggerReference() {
+		ApplicationContext context = new ClassPathXmlApplicationContext(
+				"pollerWithTriggerReference.xml", PollerParserTests.class);
+		Object poller = context.getBean("poller");
+		assertNotNull(poller);
+		PollerMetadata metadata = (PollerMetadata) poller;
+		assertTrue(metadata.getTrigger() instanceof TestTrigger);
+	}
+
 }

spring-integration-core/src/test/java/org/springframework/integration/config/xml/pollerWithTriggerReference.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<beans:beans xmlns="http://www.springframework.org/schema/integration"
+	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xmlns:beans="http://www.springframework.org/schema/beans"
+	xsi:schemaLocation="http://www.springframework.org/schema/beans
+			http://www.springframework.org/schema/beans/spring-beans.xsd
+			http://www.springframework.org/schema/integration
+			http://www.springframework.org/schema/integration/spring-integration.xsd">
+
+	<poller id="poller" receive-timeout="1234" default="true" trigger="trigger"/>
+
+    <beans:bean id="trigger" class="org.springframework.integration.config.TestTrigger"/>
+
+</beans:beans>