org.opencms.module

Class CmsModuleUpdater

java.lang.Object

org.opencms.module.CmsModuleUpdater

public class CmsModuleUpdater
extends java.lang.Object

Class used for updating modules.

This class updates modules in a smarter way than simply deleting and importing them again: The resources in the import ZIP file are compared to the resources in the currently installed module and only makes changes when necessary. The reason for this is that deletions of resources can be slow in some very large OpenCms installations, and the classic way of updating modules (delete/import) can take a long time because of this.

Constructor Summary

Constructors

Constructor and Description
CmsModuleUpdater(CmsModuleImportData moduleData, I_CmsReport report) Creates a new instance.

Method Summary

Modifier and Type	Method and Description
static boolean	checkCompatibleModuleResources(CmsModule installedModule, CmsModule newModule) Checks whether the module resources and sites of the two module versions are suitable for updating.
static java.util.Optional<CmsModuleUpdater>	create(CmsObject cms, java.lang.String importFile, I_CmsReport report) Tries to create a new updater instance.
protected CmsProject	createAndSetModuleImportProject(CmsObject cms, CmsModule module) Creates the project used to import module resources and sets it on the CmsObject.
protected void	deleteConflictingResources(CmsObject cms, CmsModule module, java.util.Map<CmsUUID,CmsUUID> conflictingIds) Deletes and publishes resources with ID conflicts.
void	importRelations(CmsObject cms) Update relations for all imported resources.
static boolean	needToUpdateResourceFields(CmsResource existingRes, CmsResource newRes, boolean reduced) Check if a resource needs to be updated because of its direct fields.
static java.lang.String	normalizePath(java.lang.String... pathComponents) Normalizes the path.
protected void	parseLinks(CmsObject cms) Parses links for XMLContents etc.
protected void	processDeletions(CmsObject cms, java.util.List<CmsResource> toDelete) Handles the file deletions.
protected void	processImportResource(CmsObject cms, CmsResourceImportData resData, int index) Processes single resource from module import data.
static CmsModuleImportData	readModuleData(CmsObject cms, java.lang.String importFile, I_CmsReport report) Reads the module data from an import zip file.
void	run() Performs the module update.
protected void	runImportScript(CmsObject cms, CmsModule module) Runs the module import script.
boolean	updateAcls(CmsObject cms, CmsResourceImportData resData, CmsResource resource) Updates the access control list fr a resource.

Methods inherited from class java.lang.Object

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

Constructor Detail

CmsModuleUpdater

public CmsModuleUpdater(CmsModuleImportData moduleData,
                        I_CmsReport report)

Creates a new instance.

Parameters:

moduleData - the module import data

report - the report to write to

Method Detail

checkCompatibleModuleResources

public static boolean checkCompatibleModuleResources(CmsModule installedModule,
                                                     CmsModule newModule)

Checks whether the module resources and sites of the two module versions are suitable for updating.

Parameters:

installedModule - the installed module

newModule - the module to import

Returns:

true if the module resources are compatible

create

public static java.util.Optional<CmsModuleUpdater> create(CmsObject cms,
                                                          java.lang.String importFile,
                                                          I_CmsReport report)
                                                   throws CmsException

Tries to create a new updater instance.

If the module is deemed non-updatable, an empty result is returned.

Parameters:

cms - the current CMS context

importFile - the import file path

report - the report to write to

Returns:

an optional module updater

Throws:

CmsException - if something goes wrong

needToUpdateResourceFields

public static boolean needToUpdateResourceFields(CmsResource existingRes,
                                                 CmsResource newRes,
                                                 boolean reduced)

Check if a resource needs to be updated because of its direct fields.

Parameters:

existingRes - the existing resource

newRes - the new resource

reduced - true if we are in reduced export mode

Returns:

true if we need to update the resource based on its direct fields

normalizePath

public static java.lang.String normalizePath(java.lang.String... pathComponents)

Normalizes the path.

Parameters:

pathComponents - the path components

Returns:

the normalized path

readModuleData

public static CmsModuleImportData readModuleData(CmsObject cms,
                                                 java.lang.String importFile,
                                                 I_CmsReport report)
                                          throws CmsException

Reads the module data from an import zip file.

Parameters:

cms - the CMS context

importFile - the import file

report - the report to write to

Returns:

the module data

Throws:

CmsException - if something goes wrong

importRelations

public void importRelations(CmsObject cms)
                     throws CmsException

Update relations for all imported resources.

Parameters:

cms - the current CMS context

Throws:

CmsException - if something goes wrong

run

public void run()

Performs the module update.

updateAcls

public boolean updateAcls(CmsObject cms,
                          CmsResourceImportData resData,
                          CmsResource resource)
                   throws CmsException

Updates the access control list fr a resource.

Parameters:

cms - the current cms context

resData - the resource data

resource - the existing resource

Returns:

the resource

Throws:

CmsException - if something goes wrong

createAndSetModuleImportProject

protected CmsProject createAndSetModuleImportProject(CmsObject cms,
                                                     CmsModule module)
                                              throws CmsException

Creates the project used to import module resources and sets it on the CmsObject.

Parameters:

cms - the CmsObject to set the project on

module - the module

Returns:

the created project

Throws:

CmsException - if something goes wrong

deleteConflictingResources

protected void deleteConflictingResources(CmsObject cms,
                                          CmsModule module,
                                          java.util.Map<CmsUUID,CmsUUID> conflictingIds)
                                   throws CmsException,
                                          java.lang.Exception

Deletes and publishes resources with ID conflicts.

Parameters:

cms - the CMS context to use

module - the module

conflictingIds - the conflicting ids

Throws:

CmsException - if something goes wrong

java.lang.Exception - if something goes wrong

parseLinks

protected void parseLinks(CmsObject cms)
                   throws CmsException

Parses links for XMLContents etc.

Parameters:

cms - the CMS context to use

Throws:

CmsException - if something goes wrong

processDeletions

protected void processDeletions(CmsObject cms,
                                java.util.List<CmsResource> toDelete)
                         throws CmsException

Handles the file deletions.

Parameters:

cms - the CMS context to use

toDelete - the resources to delete

Throws:

CmsException - if something goes wrong

processImportResource

protected void processImportResource(CmsObject cms,
                                     CmsResourceImportData resData,
                                     int index)

Processes single resource from module import data.

Parameters:

cms - the CMS context to use

resData - the resource data from the module import

index - index of the current import resource

runImportScript

protected void runImportScript(CmsObject cms,
                               CmsModule module)

Runs the module import script.

Parameters:

cms - the CMS context to use

module - the module for which to run the script