[JBoss JIRA] Created: (JBMICROCONT-380) MC chooses the wrong constructor to build a bean from metadata
8:52 a.m.
MC chooses the wrong constructor to build a bean from metadata
--------------------------------------------------------------
Key: JBMICROCONT-380
URL: https://jira.jboss.org/jira/browse/JBMICROCONT-380
Project: JBoss Microcontainer
Issue Type: Bug
Affects Versions: JBossMC.2.0.0.CR5
Reporter: Carlo de Wolf
Priority: Critical
Given the following piece of xml, MC can pick the wrong constructor to instantiate
BeanMetaDataDeployer:
<bean name="BeanMetaDataDeployer"
class="org.jboss.deployers.vfs.deployer.kernel.BeanMetaDataDeployer">
<constructor><parameter><inject
bean="jboss.kernel:service=Kernel"/></parameter></constructor>
</bean>
java.lang.IllegalArgumentException: Wrong arguments. new for target
java.lang.reflect.Constructor expected=[org.jboss.dependency.spi.Controller]
actual=[org.jboss.kernel.Kernel]
at
org.jboss.reflect.plugins.introspection.ReflectionUtils.handleErrors(ReflectionUtils.java:395)
at
org.jboss.reflect.plugins.introspection.ReflectionUtils.newInstance(ReflectionUtils.java:153)
at
org.jboss.reflect.plugins.introspection.ReflectConstructorInfoImpl.newInstance(ReflectConstructorInfoImpl.java:106)
at
org.jboss.joinpoint.plugins.BasicConstructorJoinPoint.dispatch(BasicConstructorJoinPoint.java:80)
at
org.jboss.aop.microcontainer.integration.AOPConstructorJoinpoint.createTarget(AOPConstructorJoinpoint.java:276)
at
org.jboss.aop.microcontainer.integration.AOPConstructorJoinpoint.dispatch(AOPConstructorJoinpoint.java:97)
at
org.jboss.kernel.plugins.dependency.KernelControllerContextAction$JoinpointDispatchWrapper.execute(KernelControllerContextAction.java:241)
...
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9:04 a.m.
New subject: [JBoss JIRA] Updated: (JBMICROCONT-380) MC chooses the wrong constructor to build a bean from metadata
[
https://jira.jboss.org/jira/browse/JBMICROCONT-380?page=com.atlassian.jir...
]
Ales Justin updated JBMICROCONT-380:
------------------------------------
JBoss Forum Reference:
http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4187376#... (was:
http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4187325)
Old (EJB3/Embedded) forum link:
- http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4187325
MC chooses the wrong constructor to build a bean from metadata
--------------------------------------------------------------
Key: JBMICROCONT-380
URL: https://jira.jboss.org/jira/browse/JBMICROCONT-380
Project: JBoss Microcontainer
Issue Type: Bug
Affects Versions: JBossMC.2.0.0.CR5
Reporter: Carlo de Wolf
Priority: Critical
Given the following piece of xml, MC can pick the wrong constructor to instantiate
BeanMetaDataDeployer:
<bean name="BeanMetaDataDeployer"
class="org.jboss.deployers.vfs.deployer.kernel.BeanMetaDataDeployer">
<constructor><parameter><inject
bean="jboss.kernel:service=Kernel"/></parameter></constructor>
</bean>
java.lang.IllegalArgumentException: Wrong arguments. new for target
java.lang.reflect.Constructor expected=[org.jboss.dependency.spi.Controller]
actual=[org.jboss.kernel.Kernel]
at
org.jboss.reflect.plugins.introspection.ReflectionUtils.handleErrors(ReflectionUtils.java:395)
at
org.jboss.reflect.plugins.introspection.ReflectionUtils.newInstance(ReflectionUtils.java:153)
at
org.jboss.reflect.plugins.introspection.ReflectConstructorInfoImpl.newInstance(ReflectConstructorInfoImpl.java:106)
at
org.jboss.joinpoint.plugins.BasicConstructorJoinPoint.dispatch(BasicConstructorJoinPoint.java:80)
at
org.jboss.aop.microcontainer.integration.AOPConstructorJoinpoint.createTarget(AOPConstructorJoinpoint.java:276)
at
org.jboss.aop.microcontainer.integration.AOPConstructorJoinpoint.dispatch(AOPConstructorJoinpoint.java:97)
at
org.jboss.kernel.plugins.dependency.KernelControllerContextAction$JoinpointDispatchWrapper.execute(KernelControllerContextAction.java:241)
...
--
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9:23 a.m.
New subject: [JBoss JIRA] Closed: (JBMICROCONT-380) MC chooses the wrong constructor to build a bean from metadata
[
https://jira.jboss.org/jira/browse/JBMICROCONT-380?page=com.atlassian.jir...
]
Adrian Brock closed JBMICROCONT-380.
------------------------------------
Resolution: Rejected
We've been through this discussion before.
If the constructor is ambiguous (number of parameters) then you should specify which one
you
want to use by specifying the type on the parameter.
http://www.jboss.org/file-access/default/members/jbossmc/freezone/docs/2....
This is a design decision within the MC.
By choosing the constructor early based on the
number of parameters we can avoid being more verbose in
having to specifying the types for string values or anonymous injection.
This has the drawback of being more verbose when there are multiple constructors
within the same no of parameters (a 5% use case compared with the more normal 95% cases).
If you want to try implement some kind of fuzzy match by looking at the
parameter values then go ahead, but that is a feature request.
You'll find its a lot more difficult than this example makes it look,
if not impossible (without hacks) because in general the retrieval of the value
(which can be implemented in anyway you like) needs to know the type of the parameter
upfront:
http://viewvc.jboss.org/cgi-bin/viewvc.cgi/jbossas/projects/microcontaine...
Object getValue(TypeInfo info, ClassLoader cl) throws Throwable;
MC chooses the wrong constructor to build a bean from metadata
--------------------------------------------------------------
Key: JBMICROCONT-380
URL: https://jira.jboss.org/jira/browse/JBMICROCONT-380
Project: JBoss Microcontainer
Issue Type: Bug
Affects Versions: JBossMC.2.0.0.CR5
Reporter: Carlo de Wolf
Priority: Critical
Given the following piece of xml, MC can pick the wrong constructor to instantiate
BeanMetaDataDeployer:
<bean name="BeanMetaDataDeployer"
class="org.jboss.deployers.vfs.deployer.kernel.BeanMetaDataDeployer">
<constructor><parameter><inject
bean="jboss.kernel:service=Kernel"/></parameter></constructor>
</bean>
java.lang.IllegalArgumentException: Wrong arguments. new for target
java.lang.reflect.Constructor expected=[org.jboss.dependency.spi.Controller]
actual=[org.jboss.kernel.Kernel]
at
org.jboss.reflect.plugins.introspection.ReflectionUtils.handleErrors(ReflectionUtils.java:395)
at
org.jboss.reflect.plugins.introspection.ReflectionUtils.newInstance(ReflectionUtils.java:153)
at
org.jboss.reflect.plugins.introspection.ReflectConstructorInfoImpl.newInstance(ReflectConstructorInfoImpl.java:106)
at
org.jboss.joinpoint.plugins.BasicConstructorJoinPoint.dispatch(BasicConstructorJoinPoint.java:80)
at
org.jboss.aop.microcontainer.integration.AOPConstructorJoinpoint.createTarget(AOPConstructorJoinpoint.java:276)
at
org.jboss.aop.microcontainer.integration.AOPConstructorJoinpoint.dispatch(AOPConstructorJoinpoint.java:97)
at
org.jboss.kernel.plugins.dependency.KernelControllerContextAction$JoinpointDispatchWrapper.execute(KernelControllerContextAction.java:241)
...
--
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9:29 a.m.
New subject: [JBoss JIRA] Commented: (JBMICROCONT-380) MC chooses the wrong constructor to build a bean from metadata
[
https://jira.jboss.org/jira/browse/JBMICROCONT-380?page=com.atlassian.jir...
]
Adrian Brock commented on JBMICROCONT-380:
------------------------------------------
One such hack would be to add an
isNeedsTypeToDetermineValue()
to ValueMetaData or a mixin interface that means the same thing.
MC chooses the wrong constructor to build a bean from metadata
--------------------------------------------------------------
Key: JBMICROCONT-380
URL: https://jira.jboss.org/jira/browse/JBMICROCONT-380
Project: JBoss Microcontainer
Issue Type: Bug
Affects Versions: JBossMC.2.0.0.CR5
Reporter: Carlo de Wolf
Priority: Critical
Given the following piece of xml, MC can pick the wrong constructor to instantiate
BeanMetaDataDeployer:
<bean name="BeanMetaDataDeployer"
class="org.jboss.deployers.vfs.deployer.kernel.BeanMetaDataDeployer">
<constructor><parameter><inject
bean="jboss.kernel:service=Kernel"/></parameter></constructor>
</bean>
java.lang.IllegalArgumentException: Wrong arguments. new for target
java.lang.reflect.Constructor expected=[org.jboss.dependency.spi.Controller]
actual=[org.jboss.kernel.Kernel]
at
org.jboss.reflect.plugins.introspection.ReflectionUtils.handleErrors(ReflectionUtils.java:395)
at
org.jboss.reflect.plugins.introspection.ReflectionUtils.newInstance(ReflectionUtils.java:153)
at
org.jboss.reflect.plugins.introspection.ReflectConstructorInfoImpl.newInstance(ReflectConstructorInfoImpl.java:106)
at
org.jboss.joinpoint.plugins.BasicConstructorJoinPoint.dispatch(BasicConstructorJoinPoint.java:80)
at
org.jboss.aop.microcontainer.integration.AOPConstructorJoinpoint.createTarget(AOPConstructorJoinpoint.java:276)
at
org.jboss.aop.microcontainer.integration.AOPConstructorJoinpoint.dispatch(AOPConstructorJoinpoint.java:97)
at
org.jboss.kernel.plugins.dependency.KernelControllerContextAction$JoinpointDispatchWrapper.execute(KernelControllerContextAction.java:241)
...
--
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5702
days inactive
5702
days old
3 comments
3 participants
participants (3)
-
Adrian Brock (JIRA) -
Ales Justin (JIRA)
-
Carlo de Wolf (JIRA)