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Posted to dev@aries.apache.org by "Alasdair Nottingham (JIRA)" <ji...@apache.org> on 2011/02/16 11:56:57 UTC
[jira] Created: (ARIES-577) Make optional references sane
Make optional references sane
-----------------------------
Key: ARIES-577
URL: https://issues.apache.org/jira/browse/ARIES-577
Project: Aries
Issue Type: Improvement
Components: Blueprint
Reporter: Alasdair Nottingham
Assignee: Alasdair Nottingham
One of the problems with optional references is that you have to wrap any call to them in a try catch for ServiceUnavailableException which could be thrown. There is no realistic way to "know" that the proxy is wired. Any option you might choose provides a window where you could still get ServiceUnavailableException.
Instead I propose adding the following optional attribute in the blueprint extension schema:
default="bean id"
when the no backing service is provided if this is set the request will be silently routed to the identified default bean. When the service arrives it will switch and route to the target service. When the service goes it will route back to the default bean assuming no alternative is available.
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[jira] Resolved: (ARIES-577) Make optional references sane
Posted by "Alasdair Nottingham (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/ARIES-577?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Alasdair Nottingham resolved ARIES-577.
---------------------------------------
Resolution: Fixed
Fix Version/s: 0.4
> Make optional references sane
> -----------------------------
>
> Key: ARIES-577
> URL: https://issues.apache.org/jira/browse/ARIES-577
> Project: Aries
> Issue Type: Improvement
> Components: Blueprint
> Reporter: Alasdair Nottingham
> Assignee: Alasdair Nottingham
> Fix For: 0.4
>
>
> One of the problems with optional references is that you have to wrap any call to them in a try catch for ServiceUnavailableException which could be thrown. There is no realistic way to "know" that the proxy is wired. Any option you might choose provides a window where you could still get ServiceUnavailableException.
> Instead I propose adding the following optional attribute in the blueprint extension schema:
> default="bean id"
> when the no backing service is provided if this is set the request will be silently routed to the identified default bean. When the service arrives it will switch and route to the target service. When the service goes it will route back to the default bean assuming no alternative is available.
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[jira] [Updated] (ARIES-577) Make optional references sane
Posted by "Jeremy Hughes (Updated) (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/ARIES-577?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jeremy Hughes updated ARIES-577:
--------------------------------
Fix Version/s: (was: blueprint-0.4.0)
blueprint.sample-0.4
blueprint.itests-0.4
blueprint.core-0.4
blueprint.cm-0.3.2
> Make optional references sane
> -----------------------------
>
> Key: ARIES-577
> URL: https://issues.apache.org/jira/browse/ARIES-577
> Project: Aries
> Issue Type: Improvement
> Components: Blueprint
> Reporter: Alasdair Nottingham
> Assignee: Alasdair Nottingham
> Fix For: blueprint.cm-0.3.2, blueprint.core-0.4, blueprint.itests-0.4, blueprint.sample-0.4
>
>
> One of the problems with optional references is that you have to wrap any call to them in a try catch for ServiceUnavailableException which could be thrown. There is no realistic way to "know" that the proxy is wired. Any option you might choose provides a window where you could still get ServiceUnavailableException.
> Instead I propose adding the following optional attribute in the blueprint extension schema:
> default="bean id"
> when the no backing service is provided if this is set the request will be silently routed to the identified default bean. When the service arrives it will switch and route to the target service. When the service goes it will route back to the default bean assuming no alternative is available.
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[jira] [Updated] (ARIES-577) Make optional references sane
Posted by "Jeremy Hughes (Updated) (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/ARIES-577?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jeremy Hughes updated ARIES-577:
--------------------------------
Fix Version/s: blueprint uber bundle 0.4
> Make optional references sane
> -----------------------------
>
> Key: ARIES-577
> URL: https://issues.apache.org/jira/browse/ARIES-577
> Project: Aries
> Issue Type: Improvement
> Components: Blueprint
> Reporter: Alasdair Nottingham
> Assignee: Alasdair Nottingham
> Fix For: blueprint uber bundle 0.4, blueprint.cm-0.3.2, blueprint.core-0.4, blueprint.itests-0.4, blueprint.sample-0.4
>
>
> One of the problems with optional references is that you have to wrap any call to them in a try catch for ServiceUnavailableException which could be thrown. There is no realistic way to "know" that the proxy is wired. Any option you might choose provides a window where you could still get ServiceUnavailableException.
> Instead I propose adding the following optional attribute in the blueprint extension schema:
> default="bean id"
> when the no backing service is provided if this is set the request will be silently routed to the identified default bean. When the service arrives it will switch and route to the target service. When the service goes it will route back to the default bean assuming no alternative is available.
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[jira] Updated: (ARIES-577) Make optional references sane
Posted by "Guillaume Nodet (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/ARIES-577?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Guillaume Nodet updated ARIES-577:
----------------------------------
Fix Version/s: (was: 0.4)
blueprint-0.4.0
> Make optional references sane
> -----------------------------
>
> Key: ARIES-577
> URL: https://issues.apache.org/jira/browse/ARIES-577
> Project: Aries
> Issue Type: Improvement
> Components: Blueprint
> Reporter: Alasdair Nottingham
> Assignee: Alasdair Nottingham
> Fix For: blueprint-0.4.0
>
>
> One of the problems with optional references is that you have to wrap any call to them in a try catch for ServiceUnavailableException which could be thrown. There is no realistic way to "know" that the proxy is wired. Any option you might choose provides a window where you could still get ServiceUnavailableException.
> Instead I propose adding the following optional attribute in the blueprint extension schema:
> default="bean id"
> when the no backing service is provided if this is set the request will be silently routed to the identified default bean. When the service arrives it will switch and route to the target service. When the service goes it will route back to the default bean assuming no alternative is available.
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