Package org.apache.struts.chain.commands

Class ExecuteCommand

java.lang.Object
org.apache.struts.chain.commands.ActionCommandBase
org.apache.struts.chain.commands.ExecuteCommand
All Implemented Interfaces:
org.apache.commons.chain.Command<ActionContext>, ActionCommand
Direct Known Subclasses:
ExecuteForwardCommand
public class ExecuteCommand extends ActionCommandBase
Invoke the appropriate Command for this request. If the context's ActionConfig has no command property defined, no action will be taken. If the specified command cannot be found, a warning will be logged, but processing will continue. Depending on how the chain is configured, this can be used in place of an Action or as a method of performing pre-processing.

If used instead of an action, the command which is looked up should put an ActionForward into the context, unless it has already dealt with the response.

  • Constructor Details

    • ExecuteCommand

      public ExecuteCommand()

  • Method Details

    • execute_

      protected boolean execute_(ActionContext actionCtx) throws Exception
      If the context is "valid", lookup a command and execute it.
      Specified by:
      execute_ in class ActionCommandBase
      Parameters:
      actionCtx - The ActionContext for the current request
      Returns:
      the result of the lookup command's execute method, if executed, or false if it was not executed.
      Throws:
      Exception - on any error

    • shouldProcess

      protected boolean shouldProcess(ActionContext context)
      Evaluate the current context to see if a command should even be executed.
      Parameters:
      context - A valid ActionContext
      Returns:
      TRUE if the pending Command should be executed

    • getCommand

      protected org.apache.commons.chain.Command<ActionContext> getCommand(ActionContext context)
      Find the ActionConfig in the current context and, if it is properly configured, lookup the appropriate commons-chain command.
      Parameters:
      context - A valid ActionContext
      Returns:
      a Command to execute, or null if none is specified or if the specified command cannot be found.

    • getCommand

      protected org.apache.commons.chain.Command<ActionContext> getCommand(String commandName, String catalogName)
      Retrieve the specified Command from the specified Catalog.
      Parameters:
      commandName - The Command to retrieve.
      catalogName - The Catalog to search.
      Returns:
      Instantiated Command, or null