com.interface21.web.servlet.handler
Class AbstractHandlerMapping

java.lang.Object
  |
  +--com.interface21.context.support.ApplicationObjectSupport
        |
        +--com.interface21.web.servlet.handler.AbstractHandlerMapping

All Implemented Interfaces:

ApplicationContextAware, HandlerMapping, Ordered

Direct Known Subclasses:

AbstractUrlHandlerMapping

public abstract class AbstractHandlerMapping

extends ApplicationObjectSupport

implements HandlerMapping, Ordered

Abstract base class for HandlerMapping implementations. Provides the basic infrastructure and a handler initialization method that cares about LocaleResolver. Supports a default handler.

Since:

07.04.2003

Author:

Juergen Hoeller

See Also:

getHandlerInternal(javax.servlet.http.HttpServletRequest)

Field Summary

protected org.apache.commons.logging.Log

logger

Constructor Summary

AbstractHandlerMapping()

Method Summary

java.lang.Object	getDefaultHandler() Return the default handler.
HandlerExecutionChain	getHandler(javax.servlet.http.HttpServletRequest request) Lookup a handler for the given request, falling back to the default handler if no specific one is found.
protected abstract java.lang.Object	getHandlerInternal(javax.servlet.http.HttpServletRequest request) Lookup a handler for the given request, returning null if no specific one is found.
int	getOrder() Return the order value of this object, higher value meaning greater in terms of sorting.
void	setDefaultHandler(java.lang.Object defaultHandler) Set the default handler.
void	setInterceptors(java.util.List interceptors)
void	setOrder(int order)

Methods inherited from class com.interface21.context.support.ApplicationObjectSupport

getApplicationContext, initApplicationContext, setApplicationContext

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface com.interface21.context.ApplicationContextAware

setApplicationContext

Field Detail

logger

protected final org.apache.commons.logging.Log logger

Constructor Detail

AbstractHandlerMapping

public AbstractHandlerMapping()

Method Detail

setOrder

public void setOrder(int order)

getOrder

public int getOrder()

Description copied from interface: Ordered

Return the order value of this object, higher value meaning greater in terms of sorting. Normally starting with 0 or 1, Integer.MAX_VALUE indicating greatest. Same order values will result in arbitrary positions for the affected objects.

Higher value can be interpreted as lower priority, consequently the first object has highest priority (somewhat analogous to Servlet "load-on-startup" values).

Specified by:

getOrder in interface Ordered

Following copied from interface: com.interface21.core.Ordered

Returns:

the order value

setDefaultHandler

public void setDefaultHandler(java.lang.Object defaultHandler)

Set the default handler.

Parameters:

defaultHandler - default handler instance, or null if none

getDefaultHandler

public java.lang.Object getDefaultHandler()

Return the default handler.

Returns:

the default handler instance, or null if none

setInterceptors

public void setInterceptors(java.util.List interceptors)

getHandler

public final HandlerExecutionChain getHandler(javax.servlet.http.HttpServletRequest request)
                                       throws javax.servlet.ServletException

Lookup a handler for the given request, falling back to the default handler if no specific one is found.

Specified by:

getHandler in interface HandlerMapping

Parameters:

request - current HTTP request

Returns:

the looked up handler instance, or the default handler

getHandlerInternal

protected abstract java.lang.Object getHandlerInternal(javax.servlet.http.HttpServletRequest request)
                                                throws javax.servlet.ServletException

Lookup a handler for the given request, returning null if no specific one is found. This method is evaluated by getHandler, a null return value will lead to the default handler, if one is set.

Parameters:

request - current HTTP request

Returns:

the looked up handler instance, or null