Package org.apache.commons.chain.web.servlet

Class ServletWebContext

java.lang.Object

java.util.AbstractMap<K,V>

java.util.HashMap

org.apache.commons.chain.impl.ContextBase

org.apache.commons.chain.web.WebContext

org.apache.commons.chain.web.servlet.ServletWebContext

All Implemented Interfaces:

java.util.Map, Context

public class ServletWebContext
extends WebContext

Concrete implementation of WebContext suitable for use in Servlets and JSP pages. The abstract methods are mapped to the appropriate collections of the underlying servlet context, request, and response instances that are passed to the constructor (or the initialize method).

Version:

$Revision: 480477 $ $Date: 2006-11-29 08:34:52 +0000 (Wed, 29 Nov 2006) $

Author:

Craig R. McClanahan

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class java.util.AbstractMap

java.util.AbstractMap.SimpleEntry<K extends java.lang.Object,V extends java.lang.Object>, java.util.AbstractMap.SimpleImmutableEntry<K extends java.lang.Object,V extends java.lang.Object>

Nested classes/interfaces inherited from interface java.util.Map

java.util.Map.Entry<K extends java.lang.Object,V extends java.lang.Object>

Field Summary

Fields

Modifier and Type	Field	Description
private java.util.Map	applicationScope	The lazily instantiated Map of application scope attributes.
protected javax.servlet.ServletContext	context	The ServletContext for this web application.
private java.util.Map	cookieValues	The lazily instantiated Map of cookies.
private java.util.Map	header	The lazily instantiated Map of header name-value combinations (immutable).
private java.util.Map	headerValues	The lazily instantitated Map of header name-values combinations (immutable).
private java.util.Map	initParam	The lazily instantiated Map of context initialization parameters.
private java.util.Map	param	The lazily instantiated Map of request parameter name-value.
private java.util.Map	paramValues	The lazily instantiated Map of request parameter name-values.
protected javax.servlet.http.HttpServletRequest	request	The HttpServletRequest for this request.
private java.util.Map	requestScope	The lazily instantiated Map of request scope attributes.
protected javax.servlet.http.HttpServletResponse	response	The HttpServletResponse for this request.
private java.util.Map	sessionScope	The lazily instantiated Map of session scope attributes.

Constructor Summary

Constructors

Constructor	Description
ServletWebContext()	Construct an uninitialized ServletWebContext instance.
ServletWebContext(javax.servlet.ServletContext context, javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response)	Construct a ServletWebContext instance that is initialized with the specified Servlet API objects.

Method Summary

Modifier and Type	Method	Description
java.util.Map	getApplicationScope()	See the WebContext's Javadoc.
javax.servlet.ServletContext	getContext()	Return the ServletContext for this context.
java.util.Map	getCookies()	See the WebContext's Javadoc.
java.util.Map	getHeader()	See the WebContext's Javadoc.
java.util.Map	getHeaderValues()	See the WebContext's Javadoc.
java.util.Map	getInitParam()	See the WebContext's Javadoc.
java.util.Map	getParam()	See the WebContext's Javadoc.
java.util.Map	getParamValues()	See the WebContext's Javadoc.
javax.servlet.http.HttpServletRequest	getRequest()	Return the HttpServletRequest for this context.
java.util.Map	getRequestScope()	See the WebContext's Javadoc.
javax.servlet.http.HttpServletResponse	getResponse()	Return the HttpServletResponse for this context.
java.util.Map	getSessionScope()	See the WebContext's Javadoc.
void	initialize(javax.servlet.ServletContext context, javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response)	Initialize (or reinitialize) this ServletWebContext instance for the specified Servlet API objects.
void	release()	Release references to allocated resources acquired in initialize() of via subsequent processing.

Methods inherited from class java.util.AbstractMap

equals, hashCode, toString

Methods inherited from class org.apache.commons.chain.impl.ContextBase

clear, containsValue, entrySet, get, isEmpty, keySet, put, putAll, remove, values

Methods inherited from class java.util.HashMap

clone, compute, computeIfAbsent, computeIfPresent, containsKey, forEach, getOrDefault, merge, putIfAbsent, remove, replace, replace, replaceAll, size

Methods inherited from interface java.util.Map

compute, computeIfAbsent, computeIfPresent, containsKey, entry, equals, forEach, getOrDefault, hashCode, merge, of, of, of, of, of, of, of, of, of, of, of, ofEntries, putIfAbsent, remove, replace, replace, replaceAll, size

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

applicationScope

private java.util.Map applicationScope

The lazily instantiated Map of application scope attributes.

context

protected javax.servlet.ServletContext context

The ServletContext for this web application.

header

private java.util.Map header

The lazily instantiated Map of header name-value combinations (immutable).

headerValues

private java.util.Map headerValues

The lazily instantitated Map of header name-values combinations (immutable).

initParam

private java.util.Map initParam

The lazily instantiated Map of context initialization parameters.

cookieValues

private java.util.Map cookieValues

The lazily instantiated Map of cookies.

param

private java.util.Map param

The lazily instantiated Map of request parameter name-value.

paramValues

private java.util.Map paramValues

The lazily instantiated Map of request parameter name-values.

request

protected javax.servlet.http.HttpServletRequest request

The HttpServletRequest for this request.

requestScope

private java.util.Map requestScope

The lazily instantiated Map of request scope attributes.

response

protected javax.servlet.http.HttpServletResponse response

The HttpServletResponse for this request.

sessionScope

private java.util.Map sessionScope

The lazily instantiated Map of session scope attributes.

Constructor Detail

ServletWebContext

public ServletWebContext()

Construct an uninitialized ServletWebContext instance.

ServletWebContext

public ServletWebContext(javax.servlet.ServletContext context,
                         javax.servlet.http.HttpServletRequest request,
                         javax.servlet.http.HttpServletResponse response)

Construct a ServletWebContext instance that is initialized with the specified Servlet API objects.

Parameters:

context - The ServletContext for this web application

request - The HttpServletRequest for this request

response - The HttpServletResponse for this request

Method Detail

getContext

public javax.servlet.ServletContext getContext()

Return the ServletContext for this context.

Returns:

The ServletContext for this context.

getRequest

public javax.servlet.http.HttpServletRequest getRequest()

Return the HttpServletRequest for this context.

Returns:

The HttpServletRequest for this context.

getResponse

public javax.servlet.http.HttpServletResponse getResponse()

Return the HttpServletResponse for this context.

Returns:

The HttpServletResponse for this context.

initialize

public void initialize(javax.servlet.ServletContext context,
                       javax.servlet.http.HttpServletRequest request,
                       javax.servlet.http.HttpServletResponse response)

Initialize (or reinitialize) this ServletWebContext instance for the specified Servlet API objects.

Parameters:

context - The ServletContext for this web application

request - The HttpServletRequest for this request

response - The HttpServletResponse for this request

release

public void release()

Release references to allocated resources acquired in initialize() of via subsequent processing. After this method is called, subsequent calls to any other method than initialize() will return undefined results.

getApplicationScope

public java.util.Map getApplicationScope()

See the WebContext's Javadoc.

Specified by:

getApplicationScope in class WebContext

Returns:

Application scope Map.

getHeader

public java.util.Map getHeader()

See the WebContext's Javadoc.

Specified by:

getHeader in class WebContext

Returns:

Header values Map.

getHeaderValues

public java.util.Map getHeaderValues()

See the WebContext's Javadoc.

Specified by:

getHeaderValues in class WebContext

Returns:

Header values Map.

getInitParam

public java.util.Map getInitParam()

See the WebContext's Javadoc.

Specified by:

getInitParam in class WebContext

Returns:

Initialization parameter Map.

getParam

public java.util.Map getParam()

See the WebContext's Javadoc.

Specified by:

getParam in class WebContext

Returns:

Request parameter Map.

getParamValues

public java.util.Map getParamValues()

See the WebContext's Javadoc.

Specified by:

getParamValues in class WebContext

Returns:

Request parameter Map.

getCookies

public java.util.Map getCookies()

See the WebContext's Javadoc.

Specified by:

getCookies in class WebContext

Returns:

Map of Cookies.

Since:

Chain 1.1

getRequestScope

public java.util.Map getRequestScope()

See the WebContext's Javadoc.

Specified by:

getRequestScope in class WebContext

Returns:

Request scope Map.

getSessionScope

public java.util.Map getSessionScope()

See the WebContext's Javadoc.

Specified by:

getSessionScope in class WebContext

Returns:

Session scope Map.