org.opencms.loader

Class CmsJspLoader

java.lang.Object

org.opencms.loader.CmsJspLoader

All Implemented Interfaces:

I_CmsConfigurationParameterHandler, I_CmsFlexCacheEnabledLoader, I_CmsResourceLoader, I_CmsEventListener

public class CmsJspLoader
extends java.lang.Object
implements I_CmsResourceLoader, I_CmsFlexCacheEnabledLoader, I_CmsEventListener

The JSP loader which enables the execution of JSP in OpenCms.

Parameters supported by this loader:

jsp.repository

(Optional) This is the root directory in the "real" file system where generated JSPs are stored. The default is the web application path, e.g. in Tomcat if your web application is names "opencms" it would be ${TOMCAT_HOME}/webapps/opencms/. The jsp.folder (see below) is added to this path. Usually the jsp.repository is not changed.

jsp.folder

(Optional) A path relative to the jsp.repository path where the JSPs generated by OpenCms are stored. The default is to store the generated JSP in /WEB-INF/jsp/. This works well in Tomcat 4, and the JSPs are not accessible directly from the outside this way, only through the OpenCms servlet. Please note: Some servlet environments (e.g. BEA Weblogic) do not permit JSPs to be stored under /WEB-INF. For environments like these, set the path to some place where JSPs can be accessed, e.g. /jsp/ only.

jsp.errorpage.committed

(Optional) This parameter controls behavior of JSP error pages i.e. <% page errorPage="..." %>. If you find that these don't work in your servlet environment, you should try to change the value here. The default true has been tested with Tomcat 4.1 and 5.0. Older versions of Tomcat like 4.0 require a setting of false.

Since:

6.0.0

See Also:

I_CmsResourceLoader

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	CACHE_PROPERTY_BYPASS Property value for "cache" that indicates that the FlexCache should be bypassed.
static java.lang.String	CACHE_PROPERTY_STREAM Property value for "cache" that indicates that the output should be streamed.
static java.lang.String	DEFAULT_JSP_FOLDER Default jsp folder constant.
static java.lang.String	DIRECTIVE_END Special JSP directive tag start (%>).
static java.lang.String	DIRECTIVE_START Special JSP directive tag start (<%().
static java.lang.String	JSP_EXTENSION Extension for JSP managed by OpenCms (.jsp).
static java.lang.String	PARAM_CLIENT_CACHE_MAXAGE Cache max age parameter name.
static java.lang.String	PARAM_JSP_CACHE_SIZE Jsp cache size parameter name.
static java.lang.String	PARAM_JSP_ERRORPAGE_COMMITTED Error page committed parameter name.
static java.lang.String	PARAM_JSP_FOLDER Jsp folder parameter name.
static java.lang.String	PARAM_JSP_REPOSITORY Jsp repository parameter name.
static int	RESOURCE_LOADER_ID The id of this loader.

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

Fields inherited from interface org.opencms.main.I_CmsEventListener

EVENT_BEFORE_PUBLISH_PROJECT, EVENT_CLEAR_CACHES, EVENT_CLEAR_OFFLINE_CACHES, EVENT_CLEAR_ONLINE_CACHES, EVENT_CLEAR_PRINCIPAL_CACHES, EVENT_FLEX_CACHE_CLEAR, EVENT_FLEX_PURGE_JSP_REPOSITORY, EVENT_FULLSTATIC_EXPORT, EVENT_GROUP_MODIFIED, EVENT_LOGIN_USER, EVENT_OU_MODIFIED, EVENT_PROJECT_MODIFIED, EVENT_PROPERTY_DEFINITION_CREATED, EVENT_PROPERTY_DEFINITION_MODIFIED, EVENT_PROPERTY_MODIFIED, EVENT_PUBLISH_PROJECT, EVENT_REBUILD_SEARCHINDEXES, EVENT_RESOURCE_AND_PROPERTIES_MODIFIED, EVENT_RESOURCE_COPIED, EVENT_RESOURCE_CREATED, EVENT_RESOURCE_DELETED, EVENT_RESOURCE_MODIFIED, EVENT_RESOURCE_MOVED, EVENT_RESOURCES_AND_PROPERTIES_MODIFIED, EVENT_RESOURCES_MODIFIED, EVENT_SITEMAP_CHANGED, EVENT_UPDATE_EXPORTS, EVENT_USER_MODIFIED, KEY_CHANGE, KEY_DBCONTEXT, KEY_GROUP_ID, KEY_GROUP_NAME, KEY_INDEX_NAMES, KEY_OU_ID, KEY_OU_NAME, KEY_PROJECTID, KEY_PUBLISHID, KEY_PUBLISHLIST, KEY_REPORT, KEY_RESOURCE, KEY_RESOURCES, KEY_SKIPINDEX, KEY_USER_ACTION, KEY_USER_CHANGES, KEY_USER_ID, KEY_USER_NAME, LISTENERS_FOR_ALL_EVENTS, VALUE_GROUP_MODIFIED_ACTION_CREATE, VALUE_GROUP_MODIFIED_ACTION_DELETE, VALUE_GROUP_MODIFIED_ACTION_WRITE, VALUE_OU_MODIFIED_ACTION_CREATE, VALUE_OU_MODIFIED_ACTION_DELETE, VALUE_USER_MODIFIED_ACTION_ADD_USER_TO_GROUP, VALUE_USER_MODIFIED_ACTION_CREATE_USER, VALUE_USER_MODIFIED_ACTION_DELETE_USER, VALUE_USER_MODIFIED_ACTION_REMOVE_USER_FROM_GROUP, VALUE_USER_MODIFIED_ACTION_RESET_PASSWORD, VALUE_USER_MODIFIED_ACTION_SET_OU, VALUE_USER_MODIFIED_ACTION_WRITE_USER

Constructor Summary

Constructors

Constructor and Description
CmsJspLoader() The constructor of the class is empty, the initial instance will be created by the resource manager upon startup of OpenCms.

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	cmsEvent(CmsEvent event) Acknowledge the occurrence of the specified event, implement this method to check for CmsEvents in your class.
void	destroy() Destroy this ResourceLoder, this is a NOOP so far.
protected byte[]	dispatchJsp(CmsFlexController controller) Dispatches the current request to the OpenCms internal JSP.
protected void	doPurge(java.lang.Runnable afterPurgeAction) Purges the JSP repository.
byte[]	dump(CmsObject cms, CmsResource file, 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.
protected java.lang.String	generateTaglibInclusions(java.util.Collection<java.lang.String> taglibs) Generates the taglib directives for a collection of taglib identifiers.
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.
java.lang.String	getJspRepository() Returns the absolute path in the "real" file system for the JSP repository toplevel directory.
int	getLoaderId() Returns the id of the ResourceLoader.
void	getReferencingStrongLinks(CmsObject cms, CmsResource resource, java.util.Set<java.lang.String> referencingPaths) Returns a set of root paths of files that are including the given resource using the 'link.strong' macro.
java.lang.String	getResourceLoaderInfo() Return a String describing the ResourceLoader, which is (localized to the system default locale) "The OpenCms default resource loader for JSP".
protected void	initCaches(int cacheSize) Initializes the caches.
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 file, 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.
protected byte[]	parseJsp(byte[] byteContent, java.lang.String encoding, CmsFlexController controller, java.util.Set<java.lang.String> updatedFiles, boolean isHardInclude) Parses the JSP and modifies OpenCms critical directive information.
protected java.lang.String	parseJspCmsTag(java.lang.String content, CmsFlexController controller, java.util.Set<java.lang.String> updatedFiles) Parses the JSP content for the special <%cms file="..."
protected java.lang.String	parseJspEncoding(java.lang.String content, java.lang.String encoding, boolean isHardInclude) Parses the JSP content for the <%page pageEncoding="..."
protected java.lang.String	parseJspIncludes(java.lang.String content, CmsFlexController controller, java.util.Set<java.lang.String> updatedFiles) Parses the JSP content for includes and replaces all OpenCms VFS path information with information for the real FS.
protected java.lang.String	parseJspLinkMacros(java.lang.String content, CmsFlexController controller) Parses all jsp link macros, and replace them by the right target path.
java.lang.String	processTaglibAttributes(java.lang.String content) Deprecated.
protected CmsResource	readJspResource(CmsFlexController controller, java.lang.String jspName) Returns the jsp resource identified by the given name, using the controllers cms context.
void	removeFromCache(java.util.Set<java.lang.String> rootPaths, boolean online) Removes the given resources from the cache.
void	removeOfflineJspFromRepository(CmsResource resource) Removes a JSP from an offline project from the RFS.
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.
protected void	showSource(CmsObject cms, CmsResource file, javax.servlet.http.HttpServletRequest req, javax.servlet.http.HttpServletResponse res) Delivers the plain uninterpreted resource with escaped XML.
void	triggerPurge(java.lang.Runnable afterPurgeAction) Triggers an asynchronous purge of the JSP repository.
java.lang.String	updateJsp(CmsResource resource, CmsFlexController controller, java.util.Set<java.lang.String> updatedFiles) Updates a JSP page in the "real" file system in case the VFS resource has changed.
protected java.lang.String	updateJsp(java.lang.String vfsName, CmsFlexController controller, java.util.Set<java.lang.String> updatedFiles) Updates a JSP page in the "real" file system in case the VFS resource has changed based on the resource name.
void	updateJspFromRequest(java.lang.String servletPath, CmsFlexRequest request) Updates the internal jsp repository when the servlet container tries to compile a jsp file that may not exist.
protected boolean	updateStrongLinks(CmsResource resource, CmsFlexController controller, java.util.Set<java.lang.String> updatedFiles) Updates all jsp files that include the given jsp file using the 'link.strong' macro.

Methods inherited from class java.lang.Object

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

Field Detail

CACHE_PROPERTY_BYPASS

public static final java.lang.String CACHE_PROPERTY_BYPASS

Property value for "cache" that indicates that the FlexCache should be bypassed.

See Also:

Constant Field Values

CACHE_PROPERTY_STREAM

public static final java.lang.String CACHE_PROPERTY_STREAM

Property value for "cache" that indicates that the output should be streamed.

See Also:

Constant Field Values

DEFAULT_JSP_FOLDER

public static final java.lang.String DEFAULT_JSP_FOLDER

Default jsp folder constant.

See Also:

Constant Field Values

DIRECTIVE_END

public static final java.lang.String DIRECTIVE_END

Special JSP directive tag start (%>).

See Also:

Constant Field Values

DIRECTIVE_START

public static final java.lang.String DIRECTIVE_START

Special JSP directive tag start (<%().

See Also:

Constant Field Values

JSP_EXTENSION

public static final java.lang.String JSP_EXTENSION

Extension for JSP managed by OpenCms (.jsp).

See Also:

Constant Field Values

PARAM_CLIENT_CACHE_MAXAGE

public static final java.lang.String PARAM_CLIENT_CACHE_MAXAGE

Cache max age parameter name.

See Also:

Constant Field Values

PARAM_JSP_CACHE_SIZE

public static final java.lang.String PARAM_JSP_CACHE_SIZE

Jsp cache size parameter name.

See Also:

Constant Field Values

PARAM_JSP_ERRORPAGE_COMMITTED

public static final java.lang.String PARAM_JSP_ERRORPAGE_COMMITTED

Error page committed parameter name.

See Also:

Constant Field Values

PARAM_JSP_FOLDER

public static final java.lang.String PARAM_JSP_FOLDER

Jsp folder parameter name.

See Also:

Constant Field Values

PARAM_JSP_REPOSITORY

public static final java.lang.String PARAM_JSP_REPOSITORY

Jsp repository parameter name.

See Also:

Constant Field Values

RESOURCE_LOADER_ID

public static final int RESOURCE_LOADER_ID

The id of this loader.

See Also:

Constant Field Values

Constructor Detail

CmsJspLoader

public CmsJspLoader()

The constructor of the class is empty, the initial instance will be created by the resource manager upon startup of OpenCms.

See Also:

CmsResourceManager

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)

cmsEvent

public void cmsEvent(CmsEvent event)

Description copied from interface: I_CmsEventListener

Acknowledge the occurrence of the specified event, implement this method to check for CmsEvents in your class.

Specified by:

cmsEvent in interface I_CmsEventListener

Parameters:

event - CmsEvent that has occurred

See Also:

I_CmsEventListener.cmsEvent(org.opencms.main.CmsEvent)

destroy

public void destroy()

Destroy this ResourceLoder, this is a NOOP so far.

Specified by:

destroy in interface I_CmsResourceLoader

dump

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

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

file - 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:

javax.servlet.ServletException - might be thrown by the servlet environment

java.io.IOException - might be thrown by the servlet environment

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)
              throws javax.servlet.ServletException,
                     java.io.IOException

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

Throws:

javax.servlet.ServletException - might be thrown in the process of including the sub element

java.io.IOException - might be thrown in the process of including the sub element

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()

getJspRepository

public java.lang.String getJspRepository()

Returns the absolute path in the "real" file system for the JSP repository toplevel directory.

Returns:

The full path to the JSP repository

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()

getReferencingStrongLinks

public void getReferencingStrongLinks(CmsObject cms,
                                      CmsResource resource,
                                      java.util.Set<java.lang.String> referencingPaths)
                               throws CmsException

Returns a set of root paths of files that are including the given resource using the 'link.strong' macro.

Parameters:

cms - the current cms context

resource - the resource to check

referencingPaths - the set of already referencing paths, also return parameter

Throws:

CmsException - if something goes wrong

getResourceLoaderInfo

public java.lang.String getResourceLoaderInfo()

Return a String describing the ResourceLoader, which is (localized to the system default locale) "The OpenCms default resource loader for JSP".

Specified by:

getResourceLoaderInfo in interface I_CmsResourceLoader

Returns:

a describing String for the ResourceLoader

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 file,
                 javax.servlet.http.HttpServletRequest req,
                 javax.servlet.http.HttpServletResponse res)
          throws javax.servlet.ServletException,
                 java.io.IOException,
                 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

file - the requested OpenCms VFS resource

req - the servlet request

res - the servlet response

Throws:

javax.servlet.ServletException - might be thrown by the servlet environment

java.io.IOException - might be thrown by the servlet environment

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)

processTaglibAttributes

@Deprecated
public java.lang.String processTaglibAttributes(java.lang.String content)

Deprecated.

Replaces taglib attributes in page directives with taglib directives.

Parameters:

content - the JSP source text

Returns:

the transformed JSP text

removeFromCache

public void removeFromCache(java.util.Set<java.lang.String> rootPaths,
                            boolean online)

Removes the given resources from the cache.

Parameters:

rootPaths - the set of root paths to remove

online - if online or offline

removeOfflineJspFromRepository

public void removeOfflineJspFromRepository(CmsResource resource)
                                    throws CmsLoaderException

Removes a JSP from an offline project from the RFS.

Parameters:

resource - the offline JSP resource to remove from the RFS

Throws:

CmsLoaderException - if accessing the loader fails

service

public void service(CmsObject cms,
                    CmsResource resource,
                    javax.servlet.ServletRequest req,
                    javax.servlet.ServletResponse res)
             throws javax.servlet.ServletException,
                    java.io.IOException,
                    CmsLoaderException

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

Throws:

javax.servlet.ServletException - might be thrown by the servlet environment

java.io.IOException - might be thrown by the servlet environment

CmsLoaderException

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)

triggerPurge

public void triggerPurge(java.lang.Runnable afterPurgeAction)

Triggers an asynchronous purge of the JSP repository.

Parameters:

afterPurgeAction - the action to execute after purging

updateJsp

public java.lang.String updateJsp(CmsResource resource,
                                  CmsFlexController controller,
                                  java.util.Set<java.lang.String> updatedFiles)
                           throws java.io.IOException,
                                  javax.servlet.ServletException,
                                  CmsLoaderException

Updates a JSP page in the "real" file system in case the VFS resource has changed.

Also processes the <%@ cms %> tags before the JSP is written to the real FS. Also recursively updates all files that are referenced by a <%@ cms %> tag on this page to make sure the file actually exists in the real FS. All <%@ include %> tags are parsed and the name in the tag is translated from the OpenCms VFS path to the path in the real FS. The same is done for filenames in <%@ page errorPage=... %> tags.

Parameters:

resource - the requested JSP file resource in the VFS

controller - the controller for the JSP integration

updatedFiles - a Set containing all JSP pages that have been already updated

Returns:

the file name of the updated JSP in the "real" FS

Throws:

javax.servlet.ServletException - might be thrown in the process of including the JSP

java.io.IOException - might be thrown in the process of including the JSP

CmsLoaderException - if the resource type can not be read

updateJspFromRequest

public void updateJspFromRequest(java.lang.String servletPath,
                                 CmsFlexRequest request)

Updates the internal jsp repository when the servlet container tries to compile a jsp file that may not exist.

Parameters:

servletPath - the servlet path, just to avoid unneeded recursive calls

request - the current request

dispatchJsp

protected byte[] dispatchJsp(CmsFlexController controller)
                      throws javax.servlet.ServletException,
                             java.io.IOException

Dispatches the current request to the OpenCms internal JSP.

Parameters:

controller - the current controller

Returns:

the content of the processed JSP

Throws:

javax.servlet.ServletException - if inclusion does not work

java.io.IOException - if inclusion does not work

doPurge

protected void doPurge(java.lang.Runnable afterPurgeAction)

Purges the JSP repository.

Parameters:

afterPurgeAction - the action to execute after purging

generateTaglibInclusions

protected java.lang.String generateTaglibInclusions(java.util.Collection<java.lang.String> taglibs)

Generates the taglib directives for a collection of taglib identifiers.

Parameters:

taglibs - the taglib identifiers

Returns:

a string containing taglib directives

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

initCaches

protected void initCaches(int cacheSize)

Initializes the caches.

Parameters:

cacheSize - the cache size

parseJsp

protected byte[] parseJsp(byte[] byteContent,
                          java.lang.String encoding,
                          CmsFlexController controller,
                          java.util.Set<java.lang.String> updatedFiles,
                          boolean isHardInclude)

Parses the JSP and modifies OpenCms critical directive information.

Parameters:

byteContent - the original JSP content

encoding - the encoding to use for the JSP

controller - the controller for the JSP integration

updatedFiles - a Set containing all JSP pages that have been already updated

isHardInclude - indicated if this page is actually a "hard" include with <%@ include file="..." >

Returns:

the modified JSP content

parseJspCmsTag

protected java.lang.String parseJspCmsTag(java.lang.String content,
                                          CmsFlexController controller,
                                          java.util.Set<java.lang.String> updatedFiles)

Parses the JSP content for the special <%cms file="..." %> tag.

Parameters:

content - the JSP content to parse

controller - the current JSP controller

updatedFiles - a set of already updated jsp files

Returns:

the parsed JSP content

parseJspEncoding

protected java.lang.String parseJspEncoding(java.lang.String content,
                                            java.lang.String encoding,
                                            boolean isHardInclude)

Parses the JSP content for the <%page pageEncoding="..." %> tag and ensures that the JSP page encoding is set according to the OpenCms "content-encoding" property value of the JSP.

Parameters:

content - the JSP content to parse

encoding - the encoding to use for the JSP

isHardInclude - indicated if this page is actually a "hard" include with <%@ include file="..." >

Returns:

the parsed JSP content

parseJspIncludes

protected java.lang.String parseJspIncludes(java.lang.String content,
                                            CmsFlexController controller,
                                            java.util.Set<java.lang.String> updatedFiles)

Parses the JSP content for includes and replaces all OpenCms VFS path information with information for the real FS.

Parameters:

content - the JSP content to parse

controller - the current JSP controller

updatedFiles - a set of already updated files

Returns:

the parsed JSP content

parseJspLinkMacros

protected java.lang.String parseJspLinkMacros(java.lang.String content,
                                              CmsFlexController controller)

Parses all jsp link macros, and replace them by the right target path.

Parameters:

content - the content to parse

controller - the request controller

Returns:

the parsed content

readJspResource

protected CmsResource readJspResource(CmsFlexController controller,
                                      java.lang.String jspName)
                               throws CmsException

Returns the jsp resource identified by the given name, using the controllers cms context.

Parameters:

controller - the flex controller

jspName - the name of the jsp

Returns:

an OpenCms resource

Throws:

CmsException - if something goes wrong

showSource

protected void showSource(CmsObject cms,
                          CmsResource file,
                          javax.servlet.http.HttpServletRequest req,
                          javax.servlet.http.HttpServletResponse res)
                   throws CmsException,
                          java.io.IOException

Delivers the plain uninterpreted resource with escaped XML.

This is intended for viewing historical versions.

Parameters:

cms - the initialized CmsObject which provides user permissions

file - the requested OpenCms VFS resource

req - the servlet request

res - the servlet response

Throws:

java.io.IOException - might be thrown by the servlet environment

CmsException - in case of errors accessing OpenCms functions

updateJsp

protected java.lang.String updateJsp(java.lang.String vfsName,
                                     CmsFlexController controller,
                                     java.util.Set<java.lang.String> updatedFiles)

Updates a JSP page in the "real" file system in case the VFS resource has changed based on the resource name.

Generates a resource based on the provided name and calls updateJsp(CmsResource, CmsFlexController, Set).

Parameters:

vfsName - the name of the JSP file resource in the VFS

controller - the controller for the JSP integration

updatedFiles - a Set containing all JSP pages that have been already updated

Returns:

the file name of the updated JSP in the "real" FS

updateStrongLinks

protected boolean updateStrongLinks(CmsResource resource,
                                    CmsFlexController controller,
                                    java.util.Set<java.lang.String> updatedFiles)
                             throws CmsLoaderException,
                                    java.io.IOException,
                                    javax.servlet.ServletException

Updates all jsp files that include the given jsp file using the 'link.strong' macro.

Parameters:

resource - the current updated jsp file

controller - the controller for the jsp integration

updatedFiles - the already updated files

Returns:

true if the given JSP file should be updated due to dirty included files

Throws:

javax.servlet.ServletException - might be thrown in the process of including the JSP

java.io.IOException - might be thrown in the process of including the JSP

CmsLoaderException - if the resource type can not be read