org.apache.commons.chain.web.servlet
Class PathInfoMapper

java.lang.Object
  extended byorg.apache.commons.chain.web.servlet.PathInfoMapper
All Implemented Interfaces:
Command

public class PathInfoMapper
extends Object
implements Command

Command that uses the "path info" component of the request URI to select a Command from the appropriate Catalog, and execute it. To use this command, you would typically map an instance of ChainProcessor to a wildcard pattern like "/execute/*" and then arrange that this is the default command to be executed. In such an environment, a request for the context-relative URI "/execute/foo" would cause the "/foo" command to be loaded and executed.

Author:
Craig R. McClanahan

Field Summary
 
Fields inherited from interface org.apache.commons.chain.Command
CONTINUE_PROCESSING, PROCESSING_COMPLETE
 
Constructor Summary
PathInfoMapper()
           
 
Method Summary
 boolean execute(Context context)
          Look up the extra path information for this request, and use it to select an appropriate Command to be executed.
 String getCatalogKey()
          Return the context key under which our Catalog has been stored.
 void setCatalogKey(String catalogKey)
          Set the context key under which our Catalog has been stored.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

PathInfoMapper

public PathInfoMapper()
Method Detail

getCatalogKey

public String getCatalogKey()

Return the context key under which our Catalog has been stored.

Returns:
The context key for the Catalog.

setCatalogKey

public void setCatalogKey(String catalogKey)

Set the context key under which our Catalog has been stored.

Parameters:
catalogKey - The new catalog key

execute

public boolean execute(Context context)
                throws Exception

Look up the extra path information for this request, and use it to select an appropriate Command to be executed.

Specified by:
execute in interface Command
Parameters:
context - Context for the current request
Returns:
The result of executing the Command for the request URI.
Throws:
Exception - if there is a problem executing the Command for the request URI.


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