Support for Jmx (and Integration) autoconfig in parent contexts

When there are parent contexts we already had a strategy for registering
the actuator endpoints, but not the regular JMX or Integration MBeans.
This chnage makes the autoconfigs for JMX aware of the parent context.

Also adds a sample with a parent context.

See gh-847

spring-boot-samples/spring-boot-sample-parent-context/src/main/java/sample/parent/HelloWorldService.java

@@ -0,0 +1,32 @@
+/*
+ * Copyright 2012-2013 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package sample.parent;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+@Component
+public class HelloWorldService {
+
+	@Autowired
+	private ServiceProperties configuration;
+
+	public String getHelloMessage(String name) {
+		return this.configuration.getGreeting() + " " + name;
+	}
+
+}

spring-boot-samples/spring-boot-sample-parent-context/src/main/java/sample/parent/SampleEndpoint.java

@@ -0,0 +1,41 @@
+/*
+ * Copyright 2012-2013 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package sample.parent;
+
+import java.io.File;
+import java.io.FileInputStream;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.integration.annotation.MessageEndpoint;
+import org.springframework.integration.annotation.ServiceActivator;
+import org.springframework.util.StreamUtils;
+
+@MessageEndpoint
+public class SampleEndpoint {
+
+	@Autowired
+	private HelloWorldService helloWorldService;
+
+	@ServiceActivator
+	public String hello(File input) throws Exception {
+		FileInputStream in = new FileInputStream(input);
+		String name = new String(StreamUtils.copyToByteArray(in));
+		in.close();
+		return this.helloWorldService.getHelloMessage(name);
+	}
+
+}

spring-boot-samples/spring-boot-sample-parent-context/src/main/java/sample/parent/SampleParentContextApplication.java

@@ -0,0 +1,42 @@
+/*
+ * Copyright 2012-2013 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package sample.parent;
+
+import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
+import org.springframework.boot.builder.SpringApplicationBuilder;
+import org.springframework.boot.context.properties.EnableConfigurationProperties;
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.ImportResource;
+
+@Configuration
+@EnableAutoConfiguration
+@EnableConfigurationProperties(ServiceProperties.class)
+@ComponentScan
+public class SampleParentContextApplication {
+
+	public static void main(String[] args) throws Exception {
+		new SpringApplicationBuilder(Parent.class).child(SampleParentContextApplication.class).run(args);
+	}
+	
+	@EnableAutoConfiguration
+	@ImportResource("integration-context.xml")
+	protected static class Parent {
+		
+	}
+
+}

spring-boot-samples/spring-boot-sample-parent-context/src/main/java/sample/parent/ServiceProperties.java

@@ -0,0 +1,38 @@
+/*
+ * Copyright 2012-2014 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package sample.parent;
+
+import org.springframework.boot.context.properties.ConfigurationProperties;
+import org.springframework.jmx.export.annotation.ManagedAttribute;
+import org.springframework.jmx.export.annotation.ManagedResource;
+
+@ConfigurationProperties(prefix = "service", ignoreUnknownFields = false)
+@ManagedResource
+public class ServiceProperties {
+
+	private String greeting = "Hello";
+
+	@ManagedAttribute
+	public String getGreeting() {
+		return this.greeting;
+	}
+
+	public void setGreeting(String greeting) {
+		this.greeting = greeting;
+	}
+
+}