org.opencms.loader

Class CmsRedirectLoader

java.lang.Object

org.opencms.loader.CmsRedirectLoader

All Implemented Interfaces:

I_CmsConfigurationParameterHandler, I_CmsFlexCacheEnabledLoader, I_CmsResourceLoader

public class CmsRedirectLoader
extends java.lang.Object
implements I_CmsResourceLoader, I_CmsFlexCacheEnabledLoader

Loader for HTML redirects.

Field Summary

Fields

Modifier and Type	Field and Description
static int	LOADER_ID The loader id.

Fields inherited from interface org.opencms.loader.I_CmsResourceLoader

PARAMETER_ELEMENT

Fields inherited from interface org.opencms.configuration.I_CmsConfigurationParameterHandler

ADD_PARAMETER_METHOD, INIT_CONFIGURATION_METHOD

Constructor Summary

Constructors

Constructor and Description
CmsRedirectLoader()

Method Summary

Modifier and Type	Method and Description
void	addConfigurationParameter(java.lang.String paramName, java.lang.String paramValue) Adds a configuration parameter to this parameter configurable class instance.
void	destroy() Destroys this ResourceLoder.
byte[]	dump(CmsObject cms, CmsResource resource, java.lang.String element, java.util.Locale locale, javax.servlet.http.HttpServletRequest req, javax.servlet.http.HttpServletResponse res) Dumps the processed content of the the requested file (and it's sub-elements) to a byte array.
byte[]	export(CmsObject cms, CmsResource resource, javax.servlet.http.HttpServletRequest req, javax.servlet.http.HttpServletResponse res) Static exports the contents of the requested file and it's sub-elements.
CmsParameterConfiguration	getConfiguration() Returns the parameters of this configurable class instance, or null if the class does not need any parameters.
protected CmsFlexController	getController(CmsObject cms, CmsResource resource, javax.servlet.http.HttpServletRequest req, javax.servlet.http.HttpServletResponse res, boolean streaming, boolean top) Delivers a Flex controller, either by creating a new one, or by re-using an existing one.
int	getLoaderId() Returns the id of the ResourceLoader.
java.lang.String	getResourceLoaderInfo() Returns a String describing the ResourceLoader.
void	initConfiguration() Initializes a configuration after all parameters have been added.
boolean	isStaticExportEnabled() Signals if the loader implementation supports static export of resources.
boolean	isStaticExportProcessable() Signals if the loader implementation requires processing during static export of resources.
boolean	isUsableForTemplates() Signals if the loader implementation is usable for creating templates.
boolean	isUsingUriWhenLoadingTemplate() Signals if a loader that supports templates must be invoked on the template URI or the resource URI.
void	load(CmsObject cms, CmsResource resource, javax.servlet.http.HttpServletRequest req, javax.servlet.http.HttpServletResponse res) Basic top-page processing method for a I_CmsResourceLoader, this method is called if the page is called as a sub-element on a page not already loaded with a I_CmsResourceLoader.
void	service(CmsObject cms, CmsResource resource, javax.servlet.ServletRequest req, javax.servlet.ServletResponse res) Does the job of including the requested resource, this method is called directly if the element is called as a sub-element from another I_CmsResourceLoader.
void	setFlexCache(CmsFlexCache cache) Will be called after the resource manager was initialized.

Methods inherited from class java.lang.Object

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

Field Detail

LOADER_ID

public static final int LOADER_ID

The loader id.

See Also:

Constant Field Values

Constructor Detail

CmsRedirectLoader

public CmsRedirectLoader()

Method Detail

addConfigurationParameter

public void addConfigurationParameter(java.lang.String paramName,
                                      java.lang.String paramValue)

Description copied from interface: I_CmsConfigurationParameterHandler

Adds a configuration parameter to this parameter configurable class instance.

Specified by:

addConfigurationParameter in interface I_CmsConfigurationParameterHandler

Parameters:

paramName - the name of the parameter

paramValue - the value for the parameter

See Also:

I_CmsConfigurationParameterHandler.addConfigurationParameter(java.lang.String, java.lang.String)

destroy

public void destroy()

Description copied from interface: I_CmsResourceLoader

Destroys this ResourceLoder.

Specified by:

destroy in interface I_CmsResourceLoader

See Also:

I_CmsResourceLoader.destroy()

dump

public byte[] dump(CmsObject cms,
                   CmsResource resource,
                   java.lang.String element,
                   java.util.Locale locale,
                   javax.servlet.http.HttpServletRequest req,
                   javax.servlet.http.HttpServletResponse res)
            throws CmsException

Description copied from interface: I_CmsResourceLoader

Dumps the processed content of the the requested file (and it's sub-elements) to a byte array.

Dumping the content is like calling "load" where the result is not written to the response stream, but to the returned byte array. Dumping is different from an export because the export might actually require that the content is handled or modified in a special way, or set special http headers.

Moreover, if the page type is template based, calling "dump" will not trigger the template but directly deliver the contents from the selected element.

Specified by:

dump in interface I_CmsResourceLoader

Parameters:

cms - used to access the OpenCms VFS

resource - the requested resource in the VFS

element - the element in the file to display

locale - the locale to display

req - the servlet request

res - the servlet response

Returns:

the content of the processed file

Throws:

CmsException - in case of errors accessing OpenCms functions

See Also:

I_CmsResourceLoader.dump(org.opencms.file.CmsObject, org.opencms.file.CmsResource, java.lang.String, java.util.Locale, javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)

export

public byte[] export(CmsObject cms,
                     CmsResource resource,
                     javax.servlet.http.HttpServletRequest req,
                     javax.servlet.http.HttpServletResponse res)

Description copied from interface: I_CmsResourceLoader

Static exports the contents of the requested file and it's sub-elements.

During static export, the resource content may be written to 2 streams: The export stream, and the http response output stream. Which stream is actually used depends whether the export is in "on demand" or "after publish" mode. In "on demand" mode, the resource needs to be written both to the response stream and to the file stream. In "after publish" mode, it's usually only written to the file stream, but sometimes it's required to write to the response stream as well.

Specified by:

export in interface I_CmsResourceLoader

Parameters:

cms - the initialized CmsObject which provides user permissions

resource - the requested OpenCms VFS resource

req - the servlet request

res - the servlet response

Returns:

the contents to export, or null if no export is required

See Also:

I_CmsResourceLoader.export(org.opencms.file.CmsObject, org.opencms.file.CmsResource, javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)

getConfiguration

public CmsParameterConfiguration getConfiguration()

Description copied from interface: I_CmsConfigurationParameterHandler

Returns the parameters of this configurable class instance, or null if the class does not need any parameters.

Specified by:

getConfiguration in interface I_CmsConfigurationParameterHandler

Returns:

the parameters of this configurable class instance, or null if the class does not need any parameters

See Also:

I_CmsConfigurationParameterHandler.getConfiguration()

getLoaderId

public int getLoaderId()

Description copied from interface: I_CmsResourceLoader

Returns the id of the ResourceLoader.

Specified by:

getLoaderId in interface I_CmsResourceLoader

Returns:

the id of the ResourceLoader

See Also:

I_CmsResourceLoader.getLoaderId()

getResourceLoaderInfo

public java.lang.String getResourceLoaderInfo()

Description copied from interface: I_CmsResourceLoader

Returns a String describing the ResourceLoader.

Specified by:

getResourceLoaderInfo in interface I_CmsResourceLoader

Returns:

a String describing the ResourceLoader

See Also:

I_CmsResourceLoader.getResourceLoaderInfo()

initConfiguration

public void initConfiguration()

Description copied from interface: I_CmsConfigurationParameterHandler

Initializes a configuration after all parameters have been added.

Specified by:

initConfiguration in interface I_CmsConfigurationParameterHandler

See Also:

I_CmsConfigurationParameterHandler.initConfiguration()

isStaticExportEnabled

public boolean isStaticExportEnabled()

Description copied from interface: I_CmsResourceLoader

Signals if the loader implementation supports static export of resources.

Specified by:

isStaticExportEnabled in interface I_CmsResourceLoader

Returns:

true if static export is supported, false otherwise

See Also:

I_CmsResourceLoader.isStaticExportEnabled()

isStaticExportProcessable

public boolean isStaticExportProcessable()

Description copied from interface: I_CmsResourceLoader

Signals if the loader implementation requires processing during static export of resources.

Specified by:

isStaticExportProcessable in interface I_CmsResourceLoader

Returns:

true if static export processing is required, false otherwise

See Also:

I_CmsResourceLoader.isStaticExportProcessable()

isUsableForTemplates

public boolean isUsableForTemplates()

Description copied from interface: I_CmsResourceLoader

Signals if the loader implementation is usable for creating templates.

Specified by:

isUsableForTemplates in interface I_CmsResourceLoader

Returns:

true if the loader implementation is usable for creating templates, false otherwise

See Also:

I_CmsResourceLoader.isUsableForTemplates()

isUsingUriWhenLoadingTemplate

public boolean isUsingUriWhenLoadingTemplate()

Description copied from interface: I_CmsResourceLoader

Signals if a loader that supports templates must be invoked on the template URI or the resource URI.

Specified by:

isUsingUriWhenLoadingTemplate in interface I_CmsResourceLoader

Returns:

true if the resource URI is to be used, false if the template URI is to be used

See Also:

I_CmsResourceLoader.isUsingUriWhenLoadingTemplate()

load

public void load(CmsObject cms,
                 CmsResource resource,
                 javax.servlet.http.HttpServletRequest req,
                 javax.servlet.http.HttpServletResponse res)
          throws CmsException

Description copied from interface: I_CmsResourceLoader

Basic top-page processing method for a I_CmsResourceLoader, this method is called if the page is called as a sub-element on a page not already loaded with a I_CmsResourceLoader.

Specified by:

load in interface I_CmsResourceLoader

Parameters:

cms - the initialized CmsObject which provides user permissions

resource - the requested OpenCms VFS resource

req - the servlet request

res - the servlet response

Throws:

CmsException - in case of errors accessing OpenCms functions

See Also:

I_CmsResourceLoader.load(org.opencms.file.CmsObject, org.opencms.file.CmsResource, javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)

service

public void service(CmsObject cms,
                    CmsResource resource,
                    javax.servlet.ServletRequest req,
                    javax.servlet.ServletResponse res)

Description copied from interface: I_CmsResourceLoader

Does the job of including the requested resource, this method is called directly if the element is called as a sub-element from another I_CmsResourceLoader.

Specified by:

service in interface I_CmsResourceLoader

Parameters:

cms - used to access the OpenCms VFS

resource - the requested resource in the VFS

req - the servlet request

res - the servlet response

See Also:

I_CmsResourceLoader.service(org.opencms.file.CmsObject, org.opencms.file.CmsResource, javax.servlet.ServletRequest, javax.servlet.ServletResponse)

setFlexCache

public void setFlexCache(CmsFlexCache cache)

Description copied from interface: I_CmsFlexCacheEnabledLoader

Will be called after the resource manager was initialized.

Specified by:

setFlexCache in interface I_CmsFlexCacheEnabledLoader

Parameters:

cache - the (optional) flex cache instance to use

See Also:

I_CmsFlexCacheEnabledLoader.setFlexCache(org.opencms.flex.CmsFlexCache)

getController

protected CmsFlexController getController(CmsObject cms,
                                          CmsResource resource,
                                          javax.servlet.http.HttpServletRequest req,
                                          javax.servlet.http.HttpServletResponse res,
                                          boolean streaming,
                                          boolean top)

Delivers a Flex controller, either by creating a new one, or by re-using an existing one.

Parameters:

cms - the initial CmsObject to wrap in the controller

resource - the resource requested

req - the current request

res - the current response

streaming - indicates if the response is streaming

top - indicates if the response is the top response

Returns:

a Flex controller