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https://issues.apache.org/jira/browse/CHAIN-35?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Niall Pemberton resolved CHAIN-35.
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Resolution: Fixed
Fix Version/s: 1.2
Assignee: Niall Pemberton
Fixed by the solution to CHAIN-4 - PathInfoMapper (and RequestParamterMapper /
ServletInfoMapper) now inherit from LookupCommand - which provides the ability
to specify a "catalogName" attribute:
http://svn.apache.org/viewvc?view=rev&revision=532951
Also added an example webapp for the three mapper commands (CHAIN-36):
http://svn.apache.org/viewvc/jakarta/commons/proper/chain/trunk/apps/example/
> PathInfoMapper command can not obtain the current catalog instance
> ------------------------------------------------------------------
>
> Key: CHAIN-35
> URL: https://issues.apache.org/jira/browse/CHAIN-35
> Project: Commons Chain
> Issue Type: Bug
> Affects Versions: 1.1
> Environment: Simple web application using the
> org.apache.commons.chain.web.servlet.ChainProcessor servlet with the
> PathInfoMapper. No configuration parameters differ from defaults.
> Reporter: Alonso Dominguez
> Assigned To: Niall Pemberton
> Priority: Minor
> Fix For: 1.2
>
>
> I found a NPE in your implementation of the PathInfoMapper command.
> The exception is thrown when the PathInfoMapper tries to invoke the command
> he received from the request's pathInfo. This happens at following code:
> // Map to the Command specified by the extra path info
> Catalog catalog = (Catalog) context.get(getCatalogKey());
> Command command = catalog.getCommand(pathInfo);
> As you can see, the command tries to obtain the catalog using the "get"
> method from the context. The 'catalogKey' is defined to be the same as the
> one used by the ChainProcessor servlet:
> private String catalogKey = ChainProcessor.CATALOG_DEFAULT;
> The problem is that the catalog instance is set in the request scope, not
> inside the context instance. This is the piece of code from ChainProcessor
> that does that:
> if (attribute == null) {
> request.setAttribute(CATALOG_DEFAULT, theCatalog);
> }
> So, the PathInfoMapper always obtains a null reference from the command's
> context when it tries to obtain a catalog instance.
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