de.deepamehta.files

Class FilesPlugin

java.lang.Object

de.deepamehta.core.osgi.PluginActivator

de.deepamehta.files.FilesPlugin

All Implemented Interfaces:

de.deepamehta.core.osgi.PluginContext, de.deepamehta.core.service.event.StaticResourceFilterListener, de.deepamehta.core.service.EventListener, FilesService, org.osgi.framework.BundleActivator

public class FilesPlugin
extends de.deepamehta.core.osgi.PluginActivator
implements FilesService, de.deepamehta.core.service.event.StaticResourceFilterListener

Field Summary

Fields

Modifier and Type	Field and Description
static de.deepamehta.core.service.DeepaMehtaEvent	CHECK_DISK_QUOTA
static int	DISK_QUOTA_MB
static String	FILE_REPOSITORY_PATH
static boolean	FILE_REPOSITORY_PER_WORKSPACE

Fields inherited from class de.deepamehta.core.osgi.PluginActivator

bundle, dm4, mf

Constructor Summary

Constructors

Constructor and Description
FilesPlugin()

Method Summary

Modifier and Type	Method and Description
de.deepamehta.core.Topic	createFile(InputStream in, String repoPath) Creates a file in the file repository and a corresponding File topic.
void	createFolder(String folderName, String repoPath) Creates a folder in the file repository.
boolean	fileExists(String repoPath) Checks if a file/directory with the given repository path exists in the file repository.
de.deepamehta.core.Topic	getChildFileTopic(long folderTopicId, String repoPath) Returns the File topic representing the file at a given repository path.
de.deepamehta.core.Topic	getChildFolderTopic(long folderTopicId, String repoPath) Returns the Folder topic representing the folder at a given repository path.
DirectoryListing	getDirectoryListing(String repoPath)
File	getFile(long fileTopicId) Convenience method to access the file/directory in the file repository that is represented by the given File/Folder topic.
File	getFile(String repoPath) Accesses a file/directory in the file repository by the given repository path.
de.deepamehta.core.Topic	getFileTopic(String repoPath) Returns the File topic representing the file at a given repository path.
de.deepamehta.core.Topic	getFolderTopic(String repoPath) Returns the Folder topic representing the folder at a given repository path.
String	getRepositoryPath(URL url) Checks if the given URL refers to the file repository of this DeepaMehta installation.
ResourceInfo	getResourceInfo(String repoPath)
void	init()
int	openFile(long fileTopicId)
String	pathPrefix() Returns a prefix that can be used for constructing a repository path.
String	pathPrefix(long workspaceId) Returns a prefix that can be used for constructing a repository path.
void	preInstall()
String	repoPath(File path) Maps an absolute path to a repository path.
void	shutdown()
void	staticResourceFilter(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response)
StoredFile	storeFile(UploadedFile file, String repoPath) Receives an uploaded file, stores it in the file repository, and creates a corresponding File topic.

Methods inherited from class de.deepamehta.core.osgi.PluginActivator

getBundleContext, getPluginName, getStaticResource, getUri, publishFileSystem, serviceArrived, serviceGone, setCoreService, start, stop, toString

Methods inherited from class java.lang.Object

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

Field Detail

FILE_REPOSITORY_PATH

public static final String FILE_REPOSITORY_PATH

FILE_REPOSITORY_PER_WORKSPACE

public static final boolean FILE_REPOSITORY_PER_WORKSPACE

DISK_QUOTA_MB

public static final int DISK_QUOTA_MB

CHECK_DISK_QUOTA

public static de.deepamehta.core.service.DeepaMehtaEvent CHECK_DISK_QUOTA

Constructor Detail

FilesPlugin

public FilesPlugin()

Method Detail

getFileTopic

public de.deepamehta.core.Topic getFileTopic(String repoPath)

Description copied from interface: FilesService

Returns the File topic representing the file at a given repository path. If no such File topic exists it is created.

Specified by:

getFileTopic in interface FilesService

Parameters:

repoPath - A repository path. Relative to the repository base path. Must begin with slash, no slash at the end.

If per-workspace file repos are active (dm4.filerepo.per_workspace=true) the repository path must contain the workspace prefix as the first path segment, e.g. "/workspace-1234" where 1234 is the workspace ID.

However there is one exception to that rule: if and only if "/" is passed as the repository path the workspace prefix is determined automatically with the semantics of current workspace, based on the request's workspace cookie.

For support with constructing a repository path see the pathPrefix methods.

Returns:

The File topic. Its child topics ("File Name", "Path", "Media Type", "Size") are included.

getFolderTopic

public de.deepamehta.core.Topic getFolderTopic(String repoPath)

Description copied from interface: FilesService

Returns the Folder topic representing the folder at a given repository path. If no such Folder topic exists it is created.

Specified by:

getFolderTopic in interface FilesService

Parameters:

repoPath - A repository path. Relative to the repository base path. Must begin with slash, no slash at the end.

If per-workspace file repos are active (dm4.filerepo.per_workspace=true) the repository path must contain the workspace prefix as the first path segment, e.g. "/workspace-1234" where 1234 is the workspace ID.

However there is one exception to that rule: if and only if "/" is passed as the repository path the workspace prefix is determined automatically with the semantics of current workspace, based on the request's workspace cookie.

For support with constructing a repository path see the pathPrefix methods.

Returns:

The Folder topic. Its child topics ("Folder Name", "Path") are included.

getChildFileTopic

public de.deepamehta.core.Topic getChildFileTopic(long folderTopicId,
                                                  String repoPath)

Description copied from interface: FilesService

Returns the File topic representing the file at a given repository path. If no such File topic exists it is created.

Creates an association (type "Aggregation") between the File topic (role type "Child") and its parent Folder topic (role type "Parent"), if not exists already.

Specified by:

getChildFileTopic in interface FilesService

Parameters:

folderTopicId - ID of the parent Folder topic.

repoPath - A repository path. Relative to the repository base path. Must begin with slash, no slash at the end.

If per-workspace file repos are active (dm4.filerepo.per_workspace=true) the repository path must contain the workspace prefix as the first path segment, e.g. "/workspace-1234" where 1234 is the workspace ID.

However there is one exception to that rule: if and only if "/" is passed as the repository path the workspace prefix is determined automatically with the semantics of current workspace, based on the request's workspace cookie.

For support with constructing a repository path see the pathPrefix methods.

Returns:

The File topic. Its child topics ("File Name", "Path", "Media Type", "Size") are included.

getChildFolderTopic

public de.deepamehta.core.Topic getChildFolderTopic(long folderTopicId,
                                                    String repoPath)

Description copied from interface: FilesService

Returns the Folder topic representing the folder at a given repository path. If no such Folder topic exists it is created.

Creates an association (type "Aggregation") between the Folder topic (role type "Child") and its parent Folder topic (role type "Parent"), if not exists already.

Specified by:

getChildFolderTopic in interface FilesService

Parameters:

folderTopicId - ID of the parent Folder topic.

repoPath - A repository path. Relative to the repository base path. Must begin with slash, no slash at the end.

If per-workspace file repos are active (dm4.filerepo.per_workspace=true) the repository path must contain the workspace prefix as the first path segment, e.g. "/workspace-1234" where 1234 is the workspace ID.

However there is one exception to that rule: if and only if "/" is passed as the repository path the workspace prefix is determined automatically with the semantics of current workspace, based on the request's workspace cookie.

For support with constructing a repository path see the pathPrefix methods.

Returns:

The Folder topic. Its child topics ("Folder Name", "Path") are included.

storeFile

public StoredFile storeFile(UploadedFile file,
                            String repoPath)

Description copied from interface: FilesService

Receives an uploaded file, stores it in the file repository, and creates a corresponding File topic.

Specified by:

storeFile in interface FilesService

repoPath - The directory where to store the uploaded file. The directory must exist.

A repository path. Relative to the repository base path. Must begin with slash, no slash at the end.

If per-workspace file repos are active (dm4.filerepo.per_workspace=true) the repository path must contain the workspace prefix as the first path segment, e.g. "/workspace-1234" where 1234 is the workspace ID.

However there is one exception to that rule: if and only if "/" is passed as the repository path the workspace prefix is determined automatically with the semantics of current workspace, based on the request's workspace cookie.

For support with constructing a repository path see the pathPrefix methods.

Returns:

a StoredFile object which holds 2 information: the name of the uploaded file, and the ID of the created File topic.

createFile

public de.deepamehta.core.Topic createFile(InputStream in,
                                           String repoPath)

Description copied from interface: FilesService

Creates a file in the file repository and a corresponding File topic.

Specified by:

createFile in interface FilesService

Parameters:

in - The input stream the file content is read from.

repoPath - The path and filename of the file to be created. If that file exists already it is overwritten. ### TODO: rethink overwriting

A repository path. Relative to the repository base path. Must begin with slash, no slash at the end.

If per-workspace file repos are active (dm4.filerepo.per_workspace=true) the repository path must contain the workspace prefix as the first path segment, e.g. "/workspace-1234" where 1234 is the workspace ID.

However there is one exception to that rule: if and only if "/" is passed as the repository path the workspace prefix is determined automatically with the semantics of current workspace, based on the request's workspace cookie.

For support with constructing a repository path see the pathPrefix methods.

Returns:

the File topic that corresponds to the created file.

createFolder

public void createFolder(String folderName,
                         String repoPath)

Description copied from interface: FilesService

Creates a folder in the file repository. Note: no corresponding Folder topic is created.

Specified by:

createFolder in interface FilesService

repoPath - The directory where to create the folder.

A repository path. Relative to the repository base path. Must begin with slash, no slash at the end.

If per-workspace file repos are active (dm4.filerepo.per_workspace=true) the repository path must contain the workspace prefix as the first path segment, e.g. "/workspace-1234" where 1234 is the workspace ID.

However there is one exception to that rule: if and only if "/" is passed as the repository path the workspace prefix is determined automatically with the semantics of current workspace, based on the request's workspace cookie.

For support with constructing a repository path see the pathPrefix methods.

getResourceInfo

public ResourceInfo getResourceInfo(String repoPath)

Specified by:

getResourceInfo in interface FilesService

getDirectoryListing

public DirectoryListing getDirectoryListing(String repoPath)

Specified by:

getDirectoryListing in interface FilesService

getRepositoryPath

public String getRepositoryPath(URL url)

Description copied from interface: FilesService

Checks if the given URL refers to the file repository of this DeepaMehta installation.

Specified by:

getRepositoryPath in interface FilesService

Returns:

the refered file's/directory's repository path, or null if the URL does not refer to the file repository of this DeepaMehta installation.

getFile

public File getFile(String repoPath)

Description copied from interface: FilesService

Accesses a file/directory in the file repository by the given repository path. If no such file/directory exists a FileRepositoryException is thrown.

Note: this method does not require the corresponding File/Folder topic to exist.

Specified by:

getFile in interface FilesService

Parameters:

repoPath - A repository path. Relative to the repository base path. Must begin with slash, no slash at the end.

If per-workspace file repos are active (dm4.filerepo.per_workspace=true) the repository path must contain the workspace prefix as the first path segment, e.g. "/workspace-1234" where 1234 is the workspace ID.

However there is one exception to that rule: if and only if "/" is passed as the repository path the workspace prefix is determined automatically with the semantics of current workspace, based on the request's workspace cookie.

For support with constructing a repository path see the pathPrefix methods.

getFile

public File getFile(long fileTopicId)

Description copied from interface: FilesService

Convenience method to access the file/directory in the file repository that is represented by the given File/Folder topic.

Specified by:

getFile in interface FilesService

Parameters:

fileTopicId - ID of a File/Folder topic.

fileExists

public boolean fileExists(String repoPath)

Description copied from interface: FilesService

Checks if a file/directory with the given repository path exists in the file repository.

Specified by:

fileExists in interface FilesService

Parameters:

repoPath - A repository path. Relative to the repository base path. Must begin with slash, no slash at the end.

If per-workspace file repos are active (dm4.filerepo.per_workspace=true) the repository path must contain the workspace prefix as the first path segment, e.g. "/workspace-1234" where 1234 is the workspace ID.

However there is one exception to that rule: if and only if "/" is passed as the repository path the workspace prefix is determined automatically with the semantics of current workspace, based on the request's workspace cookie.

For support with constructing a repository path see the pathPrefix methods.

Returns:

true if the file exists, false otherwise.

pathPrefix

public String pathPrefix()

Description copied from interface: FilesService

Returns a prefix that can be used for constructing a repository path. In case of per-workspace file repos are active (dm4.filerepo.per_workspace=true) the prefix represents the current workspace (e.g. "/workspace-1234"), based on the workspace cookie. In case of per-workspace file repos are not active an empty string is returned.

Specified by:

pathPrefix in interface FilesService

pathPrefix

public String pathPrefix(long workspaceId)

Description copied from interface: FilesService

Returns a prefix that can be used for constructing a repository path. In case of per-workspace file repos are active (dm4.filerepo.per_workspace=true) the prefix represents the given workspace (e.g. "/workspace-1234"). In case of per-workspace file repos are not active an empty string is returned.

Specified by:

pathPrefix in interface FilesService

openFile

public int openFile(long fileTopicId)

Specified by:

openFile in interface FilesService

preInstall

public void preInstall()

Specified by:

preInstall in interface de.deepamehta.core.osgi.PluginContext

Overrides:

preInstall in class de.deepamehta.core.osgi.PluginActivator

init

public void init()

Specified by:

init in interface de.deepamehta.core.osgi.PluginContext

Overrides:

init in class de.deepamehta.core.osgi.PluginActivator

shutdown

public void shutdown()

Specified by:

shutdown in interface de.deepamehta.core.osgi.PluginContext

Overrides:

shutdown in class de.deepamehta.core.osgi.PluginActivator

staticResourceFilter

public void staticResourceFilter(javax.servlet.http.HttpServletRequest request,
                                 javax.servlet.http.HttpServletResponse response)

Specified by:

staticResourceFilter in interface de.deepamehta.core.service.event.StaticResourceFilterListener

repoPath

public String repoPath(File path)

Maps an absolute path to a repository path.

Parameters:

path - A canonic absolute path.

Returns:

A repository path. Relative to the repository base path. Begins with slash, no slash at the end.