org.apache.cocoon.environment.portlet
Class PortletEnvironment

java.lang.Object
  org.apache.avalon.framework.logger.AbstractLogEnabled
      org.apache.cocoon.environment.AbstractEnvironment
          org.apache.cocoon.environment.portlet.PortletEnvironment

All Implemented Interfaces:

LogEnabled, Environment, PermanentRedirector, Redirector, SourceResolver

public class PortletEnvironment
extends AbstractEnvironment
implements Redirector, PermanentRedirector

Implements Environment interface for the JSR-168 Portlet environment.

Version:

CVS $Id: PortletEnvironment.html 1304258 2012-03-23 10:09:27Z ilgrosso $

Author:

Alex Rudnev, Vadim Gritsenko

Field Summary

static String	HEADER_PORTLET_MODE This header can be read from any portlet request, and can be set on action response.
static String	HEADER_PORTLET_TITLE This header can be set only, and only on render response.
static String	HEADER_WINDOW_STATE This header can be read from any portlet request, and can be set on action response.
static String	PARAMETER_PATH_INFO As portlets do not have a pathInfo in the request, we can simulate this by passing a parameter.
static String	SESSION_APPLICATION_SCOPE This is the prefix for application scope session attributes.
static String	SESSION_PORTLET_SCOPE This is the prefix for portlet scope session attributes.

Fields inherited from class org.apache.cocoon.environment.AbstractEnvironment

action, avalonToCocoonSourceWrapper, initializedComponents, manager, objectModel, outputStream, prefix, rootContext, secureOutputStream, sourceResolver, uris, view

Fields inherited from interface org.apache.excalibur.source.SourceResolver

METHOD, ROLE, URI_ENCODING, URI_PARAMETERS

Constructor Summary

PortletEnvironment(String servletPath, String pathInfo, String uri, String root, javax.portlet.ActionRequest request, javax.portlet.ActionResponse response, javax.portlet.PortletContext portletContext, Context context, String containerEncoding, String defaultFormEncoding, int defaultSessionScope)
Constructs a PortletEnvironment object from a PortletRequest and PortletResponse objects

PortletEnvironment(String servletPath, String pathInfo, String uri, String root, javax.portlet.RenderRequest request, javax.portlet.RenderResponse response, javax.portlet.PortletContext portletContext, Context context, String containerEncoding, String defaultFormEncoding, int defaultSessionScope)
Constructs a PortletEnvironment object from a PortletRequest and PortletResponse objects

Method Summary

String	getContentType() Get the ContentType
OutputStream	getOutputStream(int bufferSize) Get the output stream where to write the generated resource.
boolean	hasRedirected() Was one of the redirection methods called ?
boolean	isExternal() Always return true.
boolean	isResponseModified(long lastModified) This method always returns true because portlet environment does not support response codes.
void	permanentRedirect(boolean sessionmode, String newURL) In portlet environment this is the same as redirect(boolean, String)
void	redirect(boolean sessionmode, String newURL) Redirect to the given URL
void	sendStatus(int sc) Portlet environment does not support response status code.
void	setContentLength(int length) Portlet environment does not support response content length.
void	setContentType(String contentType) Set the ContentType
void	setResponseIsNotModified() Portlet environment does not support response status code.
void	setStatus(int statusCode) Portlet environment does not support response status code.
boolean	tryResetResponse() Reset the response if possible.

Methods inherited from class org.apache.cocoon.environment.AbstractEnvironment

changeContext, commitResponse, extractAction, extractView, finishingProcessing, getAction, getAttribute, getAttributeNames, getContext, getObjectModel, getOutputStream, getRootContext, getURI, getURIPrefix, getView, globalRedirect, hasAttribute, initComponents, isInternalRedirect, release, removeAttribute, resolve, resolveURI, resolveURI, setAction, setAttribute, setContext, setContext, setURIPrefix, setView, startingProcessing

Methods inherited from class org.apache.avalon.framework.logger.AbstractLogEnabled

enableLogging, getLogger, setupLogger, setupLogger, setupLogger

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.cocoon.environment.Redirector

globalRedirect

Field Detail

PARAMETER_PATH_INFO

public static final String PARAMETER_PATH_INFO

As portlets do not have a pathInfo in the request, we can simulate this by passing a parameter. If parameter is null, this will translate to the absent pathInfo, and portlets will be matched in the sitemap using only servletPath.

See Also:

Constant Field Values

HEADER_PORTLET_MODE

public static final String HEADER_PORTLET_MODE

This header can be read from any portlet request, and can be set on action response.

See Also:

Constant Field Values

HEADER_WINDOW_STATE

public static final String HEADER_WINDOW_STATE

This header can be read from any portlet request, and can be set on action response.

See Also:

Constant Field Values

HEADER_PORTLET_TITLE

public static final String HEADER_PORTLET_TITLE

This header can be set only, and only on render response.

See Also:

Constant Field Values

SESSION_APPLICATION_SCOPE

public static final String SESSION_APPLICATION_SCOPE

This is the prefix for application scope session attributes.

See Also:

Constant Field Values

SESSION_PORTLET_SCOPE

public static final String SESSION_PORTLET_SCOPE

This is the prefix for portlet scope session attributes.

See Also:

Constant Field Values

Constructor Detail

PortletEnvironment

public PortletEnvironment(String servletPath,
                          String pathInfo,
                          String uri,
                          String root,
                          javax.portlet.ActionRequest request,
                          javax.portlet.ActionResponse response,
                          javax.portlet.PortletContext portletContext,
                          Context context,
                          String containerEncoding,
                          String defaultFormEncoding,
                          int defaultSessionScope)
                   throws IOException

Constructs a PortletEnvironment object from a PortletRequest and PortletResponse objects

Throws:

IOException

PortletEnvironment

public PortletEnvironment(String servletPath,
                          String pathInfo,
                          String uri,
                          String root,
                          javax.portlet.RenderRequest request,
                          javax.portlet.RenderResponse response,
                          javax.portlet.PortletContext portletContext,
                          Context context,
                          String containerEncoding,
                          String defaultFormEncoding,
                          int defaultSessionScope)
                   throws IOException

Constructs a PortletEnvironment object from a PortletRequest and PortletResponse objects

Throws:

IOException

Method Detail

redirect

public void redirect(boolean sessionmode,
                     String newURL)
              throws IOException

Description copied from interface: Redirector

Redirect to the given URL

Specified by:

redirect in interface Environment

Specified by:

redirect in interface Redirector

Throws:

IOException

permanentRedirect

public void permanentRedirect(boolean sessionmode,
                              String newURL)
                       throws IOException

In portlet environment this is the same as redirect(boolean, String)

Specified by:

permanentRedirect in interface PermanentRedirector

Throws:

IOException

hasRedirected

public boolean hasRedirected()

Description copied from interface: Redirector

Was one of the redirection methods called ?

Specified by:

hasRedirected in interface Redirector

setStatus

public void setStatus(int statusCode)

Portlet environment does not support response status code.

Specified by:

setStatus in interface Environment

Overrides:

setStatus in class AbstractEnvironment

sendStatus

public void sendStatus(int sc)

Portlet environment does not support response status code.

Specified by:

sendStatus in interface Redirector

Parameters:

sc - an http status code.

setContentType

public void setContentType(String contentType)

Set the ContentType

Specified by:

setContentType in interface Environment

getContentType

public String getContentType()

Get the ContentType

Specified by:

getContentType in interface Environment

setContentLength

public void setContentLength(int length)

Portlet environment does not support response content length. This method does nothing.

Specified by:

setContentLength in interface Environment

isResponseModified

public boolean isResponseModified(long lastModified)

This method always returns true because portlet environment does not support response codes.

Specified by:

isResponseModified in interface Environment

Overrides:

isResponseModified in class AbstractEnvironment

Returns:

true if the response is modified or if the environment is not able to test it

setResponseIsNotModified

public void setResponseIsNotModified()

Portlet environment does not support response status code. This method does nothing.

Specified by:

setResponseIsNotModified in interface Environment

Overrides:

setResponseIsNotModified in class AbstractEnvironment

tryResetResponse

public boolean tryResetResponse()
                         throws IOException

Reset the response if possible. This allows error handlers to have a higher chance to produce clean output if the pipeline that raised the error has already output some data.

Specified by:

tryResetResponse in interface Environment

Overrides:

tryResetResponse in class AbstractEnvironment

Returns:

true if the response was successfully reset

Throws:

IOException

getOutputStream

public OutputStream getOutputStream(int bufferSize)
                             throws IOException

Get the output stream where to write the generated resource. The returned stream is buffered by the environment. If the buffer size is -1 then the complete output is buffered. If the buffer size is 0, no buffering takes place. This method replaces AbstractEnvironment.getOutputStream().

Specified by:

getOutputStream in interface Environment

Overrides:

getOutputStream in class AbstractEnvironment

Throws:

IOException

isExternal

public boolean isExternal()

Always return true.

Specified by:

isExternal in interface Environment

Returns:

true if this environment is external