[jira] Commented: (ARIES-98) Blueprint MetadataMBean cannot handle multiple-nesting blueprint component definitions

["Rex Wang (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/ARIES-98?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12796065#action_12796065 ] 

Rex Wang commented on ARIES-98:
-------------------------------

That is because of a drawback of Java 5. In Java 5's OpenType, the ArrayType can only made up by wrapped Bytes. So to be compatible with Java 5, we have to sacrifice the performance. That is why you see such a great many Byte objects for values.
However, in practice, I believe we won't write such multiple-nesting beans.

-Rex

> Blueprint MetadataMBean cannot handle multiple-nesting blueprint component definitions
> --------------------------------------------------------------------------------------
>
>                 Key: ARIES-98
>                 URL: https://issues.apache.org/jira/browse/ARIES-98
>             Project: Aries
>          Issue Type: Bug
>          Components: Blueprint
>    Affects Versions: Incubation
>         Environment: Linux i386
> Sun jdk1.5.0_16
>            Reporter: Forrest Xia
>
> When a blueprint config has multiple-nesting components definition, for example as follows, then the BlueprintMetadataMBean will return a huge java.lang.Byte[], in my case, it's more than 5 millions, thus cause JMX client application(e.g JConsole) hangs.
> <?xml version="1.0" encoding="UTF-8"?>	
> <blueprint default-activation="eager" default-availability="optional"
> 	default-timeout="300000" xmlns="http://www.osgi.org/xmlns/blueprint/v1.0.0">
> 	<description>Apache Aries Blueprint Complex Sample - Client</description>
> 	<bean id="bean1" class="org.apache.aries.blueprint.sample.complex.client.temp.Bean1" init-method="startUp">
> 		<argument>
> 			<bean class="org.apache.aries.blueprint.sample.complex.client.temp.Bean2" init-method="startUp">
> 				<argument>
> 					<bean class="org.apache.aries.blueprint.sample.complex.client.temp.Bean3" init-method="startUp">
> 						<argument>
> 							<bean class="org.apache.aries.blueprint.sample.complex.client.temp.Bean4" init-method="startUp">
> 								<argument>
> 									<bean class="org.apache.aries.blueprint.sample.complex.client.temp.Bean5" init-method="startUp">
> 										<argument>
> 											<bean class="org.apache.aries.blueprint.sample.complex.client.temp.Bean6" init-method="startUp">
> 												<argument value="This is Bean6!"/>
> 											</bean>
> 										</argument>
> 									</bean>
> 								</argument>
> 							</bean>
> 						</argument>
> 					</bean>
> 				</argument>
> 			</bean>
> 		</argument>
> 	</bean>
> </blueprint>

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