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Eclipse Platform
Release 3.5

org.eclipse.core.resources
Interface IFile

All Superinterfaces:
IAdaptable, IEncodedStorage, IResource, ISchedulingRule, IStorage

public interface IFile
extends IResource, IEncodedStorage, IAdaptable

Files are leaf resources which contain data. The contents of a file resource is stored as a file in the local file system.

Files, like folders, may exist in the workspace but not be local; non-local file resources serve as place-holders for files whose content and properties have not yet been fetched from a repository.

Files implement the IAdaptable interface; extensions are managed by the platform's adapter manager.

See Also:
Platform.getAdapterManager()
Restriction:
This interface is not intended to be implemented by clients.
Restriction:
This interface is not intended to be extended by clients.

Field Summary
static int ENCODING_ISO_8859_1
          Deprecated. see getEncoding for details
static int ENCODING_UNKNOWN
          Deprecated. see getEncoding for details
static int ENCODING_US_ASCII
          Deprecated. see getEncoding for details
static int ENCODING_UTF_16
          Deprecated. see getEncoding for details
static int ENCODING_UTF_16BE
          Deprecated. see getEncoding for details
static int ENCODING_UTF_16LE
          Deprecated. see getEncoding for details
static int ENCODING_UTF_8
          Deprecated. see getEncoding for details
 
Fields inherited from interface org.eclipse.core.resources. IResource
ALLOW_MISSING_LOCAL, ALWAYS_DELETE_PROJECT_CONTENT, AVOID_NATURE_CONFIG, BACKGROUND_REFRESH, CHECK_ANCESTORS, DEPTH_INFINITE, DEPTH_ONE, DEPTH_ZERO, DERIVED, FILE, FOLDER, FORCE, HIDDEN, KEEP_HISTORY, NEVER_DELETE_PROJECT_CONTENT, NONE, NULL_STAMP, PROJECT, REPLACE, ROOT, SHALLOW, TEAM_PRIVATE
 
Method Summary
 void appendContents ( InputStream source, boolean force, boolean keepHistory, IProgressMonitor monitor)
          Appends the entire contents of the given stream to this file.
 void appendContents ( InputStream source, int updateFlags, IProgressMonitor monitor)
          Appends the entire contents of the given stream to this file.
 void create ( InputStream source, boolean force, IProgressMonitor monitor)
          Creates a new file resource as a member of this handle's parent resource.
 void create ( InputStream source, int updateFlags, IProgressMonitor monitor)
          Creates a new file resource as a member of this handle's parent resource.
 void createLink ( IPath localLocation, int updateFlags, IProgressMonitor monitor)
          Creates a new file resource as a member of this handle's parent resource.
 void createLink ( URI location, int updateFlags, IProgressMonitor monitor)
          Creates a new file resource as a member of this handle's parent resource.
 void delete (boolean force, boolean keepHistory, IProgressMonitor monitor)
          Deletes this file from the workspace.
  String getCharset ()
          Returns the name of a charset to be used when decoding the contents of this file into characters.
  String getCharset (boolean checkImplicit)
          Returns the name of a charset to be used when decoding the contents of this file into characters.
  String getCharsetFor ( Reader reader)
          Returns the name of a charset to be used to encode the given contents when saving to this file.
  IContentDescription getContentDescription ()
          Returns a description for this file's current contents.
  InputStream getContents ()
          Returns an open input stream on the contents of this file.
  InputStream getContents (boolean force)
          This refinement of the corresponding IStorage method returns an open input stream on the contents of this file.
 int getEncoding ()
          Deprecated. use IFile#getCharset instead
  IPath getFullPath ()
          Returns the full path of this file.
  IFileState[] getHistory ( IProgressMonitor monitor)
          Returns a list of past states of this file known to this workspace.
  String getName ()
          Returns the name of this file.
 boolean isReadOnly ()
          Returns whether this file is read-only.
 void move ( IPath destination, boolean force, boolean keepHistory, IProgressMonitor monitor)
          Moves this resource to be at the given location.
 void setCharset ( String newCharset)
          Deprecated. Replaced by setCharset(String, IProgressMonitor) which is a workspace operation and reports changes in resource deltas.
 void setCharset ( String newCharset, IProgressMonitor monitor)
          Sets the charset for this file.
 void setContents ( IFileState source, boolean force, boolean keepHistory, IProgressMonitor monitor)
          Sets the contents of this file to the bytes in the given file state.
 void setContents ( IFileState source, int updateFlags, IProgressMonitor monitor)
          Sets the contents of this file to the bytes in the given file state.
 void setContents ( InputStream source, boolean force, boolean keepHistory, IProgressMonitor monitor)
          Sets the contents of this file to the bytes in the given input stream.
 void setContents ( InputStream source, int updateFlags, IProgressMonitor monitor)
          Sets the contents of this file to the bytes in the given input stream.
 
Methods inherited from interface org.eclipse.core.resources. IResource
accept, accept, accept, accept, clearHistory, copy, copy, copy, copy, createMarker, createProxy, delete, delete, deleteMarkers, equals, exists, findMarker, findMarkers, findMaxProblemSeverity, getFileExtension, getLocalTimeStamp, getLocation, getLocationURI, getMarker, getModificationStamp, getParent, getPersistentProperties, getPersistentProperty, getProject, getProjectRelativePath, getRawLocation, getRawLocationURI, getResourceAttributes, getSessionProperties, getSessionProperty, getType, getWorkspace, isAccessible, isDerived, isDerived, isHidden, isHidden, isLinked, isLinked, isLocal, isPhantom, isSynchronized, isTeamPrivateMember, isTeamPrivateMember, move, move, move, move, refreshLocal, revertModificationStamp, setDerived, setHidden, setLocal, setLocalTimeStamp, setPersistentProperty, setReadOnly, setResourceAttributes, setSessionProperty, setTeamPrivateMember, touch
 
Methods inherited from interface org.eclipse.core.runtime.jobs. ISchedulingRule
contains, isConflicting
 
Methods inherited from interface org.eclipse.core.runtime. IAdaptable
getAdapter
 

Field Detail

ENCODING_UNKNOWN

static final int ENCODING_UNKNOWN
Deprecated. see getEncoding for details
Character encoding constant (value 0) which identifies files that have an unknown character encoding scheme.

See Also:
getEncoding(), Constant Field Values

ENCODING_US_ASCII

static final int ENCODING_US_ASCII
Deprecated. see getEncoding for details
Character encoding constant (value 1) which identifies files that are encoded with the US-ASCII character encoding scheme.

See Also:
getEncoding(), Constant Field Values

ENCODING_ISO_8859_1

static final int ENCODING_ISO_8859_1
Deprecated. see getEncoding for details
Character encoding constant (value 2) which identifies files that are encoded with the ISO-8859-1 character encoding scheme, also known as ISO-LATIN-1.

See Also:
getEncoding(), Constant Field Values

ENCODING_UTF_8

static final int ENCODING_UTF_8
Deprecated. see getEncoding for details
Character encoding constant (value 3) which identifies files that are encoded with the UTF-8 character encoding scheme.

See Also:
getEncoding(), Constant Field Values

ENCODING_UTF_16BE

static final int ENCODING_UTF_16BE
Deprecated. see getEncoding for details
Character encoding constant (value 4) which identifies files that are encoded with the UTF-16BE character encoding scheme.

See Also:
getEncoding(), Constant Field Values

ENCODING_UTF_16LE

static final int ENCODING_UTF_16LE
Deprecated. see getEncoding for details
Character encoding constant (value 5) which identifies files that are encoded with the UTF-16LE character encoding scheme.

See Also:
getEncoding(), Constant Field Values

ENCODING_UTF_16

static final int ENCODING_UTF_16
Deprecated. see getEncoding for details
Character encoding constant (value 6) which identifies files that are encoded with the UTF-16 character encoding scheme.

See Also:
getEncoding(), Constant Field Values
Method Detail

appendContents

void appendContents(
InputStream source,
                    boolean force,
                    boolean keepHistory,
                    
IProgressMonitor monitor)
                    throws 
CoreException
Appends the entire contents of the given stream to this file.

This is a convenience method, fully equivalent to:

   appendContents(source, (keepHistory ? KEEP_HISTORY : IResource.NONE) | (force ? FORCE : IResource.NONE), monitor);
 

This method changes resources; these changes will be reported in a subsequent resource change event, including an indication that this file's content have been changed.

This method is long-running; progress and cancelation are provided by the given progress monitor.

Parameters:
source - an input stream containing the new contents of the file
force - a flag controlling how to deal with resources that are not in sync with the local file system
keepHistory - a flag indicating whether or not to store the current contents in the local history
monitor - a progress monitor, or null if progress reporting is not desired
Throws:
CoreException - if this method fails. Reasons include:
  • This resource does not exist.
  • The corresponding location in the local file system is occupied by a directory.
  • The workspace is not in sync with the corresponding location in the local file system and force is false.
  • Resource changes are disallowed during certain types of resource change event notification. See IResourceChangeEvent for more details.
  • The file modification validator disallowed the change.
OperationCanceledException - if the operation is canceled. Cancelation can occur even if no progress monitor is provided.
See Also:
appendContents(java.io.InputStream,int,IProgressMonitor)

appendContents

void appendContents(
InputStream source,
                    int updateFlags,
                    
IProgressMonitor monitor)
                    throws 
CoreException
Appends the entire contents of the given stream to this file. The stream, which must not be null, will get closed whether this method succeeds or fails.

The FORCE update flag controls how this method deals with cases where the workspace is not completely in sync with the local file system. If FORCE is not specified, the method will only attempt to overwrite a corresponding file in the local file system provided it is in sync with the workspace. This option ensures there is no unintended data loss; it is the recommended setting. However, if FORCE is specified, an attempt will be made to write a corresponding file in the local file system, overwriting any existing one if need be. In either case, if this method succeeds, the resource will be marked as being local (even if it wasn't before).

If this file is non-local then this method will always fail. The only exception is when FORCE is specified and the file exists in the local file system. In this case the file is made local and the given contents are appended.

The KEEP_HISTORY update flag controls whether or not a copy of current contents of this file should be captured in the workspace's local history (properties are not recorded in the local history). The local history mechanism serves as a safety net to help the user recover from mistakes that might otherwise result in data loss. Specifying KEEP_HISTORY is recommended except in circumstances where past states of the files are of no conceivable interest to the user. Note that local history is maintained with each individual project, and gets discarded when a project is deleted from the workspace. This flag is ignored if the file was not previously local.

Update flags other than FORCE and KEEP_HISTORY are ignored.

Prior to modifying the contents of this file, the file modification validator (if provided by the VCM plug-in), will be given a chance to perform any last minute preparations. Validation is performed by calling IFileModificationValidator.validateSave on this file. If the validation fails, then this operation will fail.

This method changes resources; these changes will be reported in a subsequent resource change event, including an indication that this file's content have been changed.

This method is long-running; progress and cancelation are provided by the given progress monitor.

Parameters:
source - an input stream containing the new contents of the file
updateFlags - bit-wise or of update flag constants (FORCE and KEEP_HISTORY)
monitor - a progress monitor, or null if progress reporting is not desired
Throws:
CoreException - if this method fails. Reasons include:
  • This resource does not exist.
  • The corresponding location in the local file system is occupied by a directory.
  • The workspace is not in sync with the corresponding location in the local file system and FORCE is not specified.
  • Resource changes are disallowed during certain types of resource change event notification. See IResourceChangeEvent for more details.
  • The file modification validator disallowed the change.
OperationCanceledException - if the operation is canceled. Cancelation can occur even if no progress monitor is provided.
Since:
2.0
See Also:
IResourceRuleFactory.modifyRule(IResource)

create

void create(
InputStream source,
            boolean force,
            
IProgressMonitor monitor)
            throws 
CoreException
Creates a new file resource as a member of this handle's parent resource.

This is a convenience method, fully equivalent to:

   create(source, (force ? FORCE : IResource.NONE), monitor);
 

This method changes resources; these changes will be reported in a subsequent resource change event, including an indication that the file has been added to its parent.

This method is long-running; progress and cancellation are provided by the given progress monitor.

Parameters:
source - an input stream containing the initial contents of the file, or null if the file should be marked as not local
force - a flag controlling how to deal with resources that are not in sync with the local file system
monitor - a progress monitor, or null if progress reporting is not desired
Throws:
CoreException - if this method fails. Reasons include:
  • This resource already exists in the workspace.
  • The parent of this resource does not exist.
  • The project of this resource is not accessible.
  • The parent contains a resource of a different type at the same path as this resource.
  • The name of this resource is not valid (according to IWorkspace.validateName).
  • The corresponding location in the local file system is occupied by a directory.
  • The corresponding location in the local file system is occupied by a file and force is false.
  • Resource changes are disallowed during certain types of resource change event notification. See IResourceChangeEvent for more details.
OperationCanceledException - if the operation is canceled. Cancelation can occur even if no progress monitor is provided.

create

void create(
InputStream source,
            int updateFlags,
            
IProgressMonitor monitor)
            throws 
CoreException
Creates a new file resource as a member of this handle's parent resource. The resource's contents are supplied by the data in the given stream. This method closes the stream whether it succeeds or fails. If the stream is null then a file is not created in the local file system and the created file resource is marked as being non-local.

The IResource.FORCE update flag controls how this method deals with cases where the workspace is not completely in sync with the local file system. If IResource.FORCE is not specified, the method will only attempt to write a file in the local file system if it does not already exist. This option ensures there is no unintended data loss; it is the recommended setting. However, if IResource.FORCE is specified, this method will attempt to write a corresponding file in the local file system, overwriting any existing one if need be.

The IResource.DERIVED update flag indicates that this resource should immediately be set as a derived resource. Specifying this flag is equivalent to atomically calling IResource.setDerived(boolean) with a value of true immediately after creating the resource.

The IResource.TEAM_PRIVATE update flag indicates that this resource should immediately be set as a team private resource. Specifying this flag is equivalent to atomically calling IResource.setTeamPrivateMember(boolean) with a value of true immediately after creating the resource.

The IResource.HIDDEN update flag indicates that this resource should immediately be set as a hidden resource. Specifying this flag is equivalent to atomically calling IResource.setHidden(boolean) with a value of true immediately after creating the resource.

Update flags other than those listed above are ignored.

This method changes resources; these changes will be reported in a subsequent resource change event, including an indication that the file has been added to its parent.

This method is long-running; progress and cancellation are provided by the given progress monitor.

Parameters:
source - an input stream containing the initial contents of the file, or null if the file should be marked as not local
updateFlags - bit-wise or of update flag constants ( IResource.FORCE, IResource.DERIVED, and IResource.TEAM_PRIVATE)
monitor - a progress monitor, or null if progress reporting is not desired
Throws:
CoreException - if this method fails. Reasons include:
  • This resource already exists in the workspace.
  • The parent of this resource does not exist.
  • The project of this resource is not accessible.
  • The parent contains a resource of a different type at the same path as this resource.
  • The name of this resource is not valid (according to IWorkspace.validateName).
  • The corresponding location in the local file system is occupied by a directory.
  • The corresponding location in the local file system is occupied by a file and FORCE is not specified.
  • Resource changes are disallowed during certain types of resource change event notification. See IResourceChangeEvent for more details.
OperationCanceledException - if the operation is canceled. Cancelation can occur even if no progress monitor is provided.
Since:
2.0
See Also:
IResourceRuleFactory.createRule(IResource)

createLink

void createLink(
IPath localLocation,
                int updateFlags,
                
IProgressMonitor monitor)
                throws 
CoreException
Creates a new file resource as a member of this handle's parent resource. The file's contents will be located in the file specified by the given file system path. The given path must be either an absolute file system path, or a relative path whose first segment is the name of a workspace path variable.

The IResource.ALLOW_MISSING_LOCAL update flag controls how this method deals with cases where the local file system file to be linked does not exist, or is relative to a workspace path variable that is not defined. If IResource.ALLOW_MISSING_LOCAL is specified, the operation will succeed even if the local file is missing, or the path is relative to an undefined variable. If IResource.ALLOW_MISSING_LOCAL is not specified, the operation will fail in the case where the local file system file does not exist or the path is relative to an undefined variable.

The IResource.REPLACE update flag controls how this method deals with cases where a resource of the same name as the prospective link already exists. If IResource.REPLACE is specified, then any existing resource with the same name is removed from the workspace to make way for creation of the link. This does not cause the underlying file system contents of that resource to be deleted. If IResource.REPLACE is not specified, this method will fail if an existing resource exists of the same name.

The IResource.HIDDEN update flag indicates that this resource should immediately be set as a hidden resource. Specifying this flag is equivalent to atomically calling IResource.setHidden(boolean) with a value of true immediately after creating the resource.

Update flags other than those listed above are ignored.

This method synchronizes this resource with the local file system at the given location.

This method changes resources; these changes will be reported in a subsequent resource change event, including an indication that the file has been added to its parent.

This method is long-running; progress and cancellation are provided by the given progress monitor.

Parameters:
localLocation - a file system path where the file should be linked
updateFlags - bit-wise or of update flag constants ( IResource.ALLOW_MISSING_LOCAL and IResource.REPLACE)
monitor - a progress monitor, or null if progress reporting is not desired
Throws:
CoreException - if this method fails. Reasons include:
  • This resource already exists in the workspace.
  • The workspace contains a resource of a different type at the same path as this resource.
  • The parent of this resource does not exist.
  • The parent of this resource is not an open project
  • The name of this resource is not valid (according to IWorkspace.validateName).
  • The corresponding location in the local file system does not exist, or is relative to an undefined variable, and ALLOW_MISSING_LOCAL is not specified.
  • The corresponding location in the local file system is occupied by a directory (as opposed to a file).
  • Resource changes are disallowed during certain types of resource change event notification. See IResourceChangeEvent for more details.
  • The team provider for the project which contains this folder does not permit linked resources.
  • This folder's project contains a nature which does not permit linked resources.
OperationCanceledException - if the operation is canceled. Cancelation can occur even if no progress monitor is provided.
Since:
2.1
See Also:
IResource.isLinked(), IResource.ALLOW_MISSING_LOCAL

createLink

void createLink(
URI location,
                int updateFlags,
                
IProgressMonitor monitor)
                throws 
CoreException
Creates a new file resource as a member of this handle's parent resource. The file's contents will be located in the file specified by the given URI. The given URI must be either absolute, or a relative URI whose first path segment is the name of a workspace path variable.

The ALLOW_MISSING_LOCAL update flag controls how this method deals with cases where the file system file to be linked does not exist, or is relative to a workspace path variable that is not defined. If ALLOW_MISSING_LOCAL is specified, the operation will succeed even if the local file is missing, or the path is relative to an undefined variable. If ALLOW_MISSING_LOCAL is not specified, the operation will fail in the case where the file system file does not exist or the path is relative to an undefined variable.

The IResource.REPLACE update flag controls how this method deals with cases where a resource of the same name as the prospective link already exists. If IResource.REPLACE is specified, then any existing resource with the same name is removed from the workspace to make way for creation of the link. This does not cause the underlying file system contents of that resource to be deleted. If IResource.REPLACE is not specified, this method will fail if an existing resource exists of the same name.

The IResource.HIDDEN update flag indicates that this resource should immediately be set as a hidden resource. Specifying this flag is equivalent to atomically calling IResource.setHidden(boolean) with a value of true immediately after creating the resource.

Update flags other than those listed above are ignored.

This method synchronizes this resource with the file system at the given location.

This method changes resources; these changes will be reported in a subsequent resource change event, including an indication that the file has been added to its parent.

This method is long-running; progress and cancellation are provided by the given progress monitor.

Parameters:
location - a file system URI where the file should be linked
updateFlags - bit-wise or of update flag constants ( IResource.ALLOW_MISSING_LOCAL and IResource.REPLACE)
monitor - a progress monitor, or null if progress reporting is not desired
Throws:
CoreException - if this method fails. Reasons include:
  • This resource already exists in the workspace.
  • The workspace contains a resource of a different type at the same path as this resource.
  • The parent of this resource does not exist.
  • The parent of this resource is not an open project
  • The name of this resource is not valid (according to IWorkspace.validateName).
  • The corresponding location in the file system does not exist, or is relative to an undefined variable, and ALLOW_MISSING_LOCAL is not specified.
  • The corresponding location in the file system is occupied by a directory (as opposed to a file).
  • Resource changes are disallowed during certain types of resource change event notification. See IResourceChangeEvent for more details.
  • The team provider for the project which contains this folder does not permit linked resources.
  • This folder's project contains a nature which does not permit linked resources.
OperationCanceledException - if the operation is canceled. Cancelation can occur even if no progress monitor is provided.
Since:
3.2
See Also:
IResource.isLinked(), IResource.ALLOW_MISSING_LOCAL

delete

void delete(boolean force,
            boolean keepHistory,
            
IProgressMonitor monitor)
            throws 
CoreException
Deletes this file from the workspace.

This is a convenience method, fully equivalent to:

   delete((keepHistory ? KEEP_HISTORY : IResource.NONE) | (force ? FORCE : IResource.NONE), monitor);
 

This method changes resources; these changes will be reported in a subsequent resource change event, including an indication that this folder has been removed from its parent.

This method is long-running; progress and cancellation are provided by the given progress monitor.

Parameters:
force - a flag controlling whether resources that are not in sync with the local file system will be tolerated
keepHistory - a flag controlling whether files under this folder should be stored in the workspace's local history
monitor - a progress monitor, or null if progress reporting is not desired
Throws:
CoreException - if this method fails. Reasons include:
  • This resource could not be deleted for some reason.
  • This resource is out of sync with the local file system and force is false.
  • Resource changes are disallowed during certain types of resource change event notification. See IResourceChangeEvent for more details.
OperationCanceledException - if the operation is canceled. Cancelation can occur even if no progress monitor is provided.
See Also:
IResource.delete(int,IProgressMonitor), IResourceRuleFactory.deleteRule(IResource)

getCharset

String getCharset()
                  throws 
CoreException
Returns the name of a charset to be used when decoding the contents of this file into characters.

This refinement of the corresponding IEncodedStorage method is a convenience method, fully equivalent to:

   getCharset(true);
 

Note 1: this method does not check whether the result is a supported charset name. Callers should be prepared to handle UnsupportedEncodingException where this charset is used.

Note 2: this method returns a cached value for the encoding that may be out of date if the file is not synchronized with the local file system and the encoding has since changed in the file system.

Specified by:
getCharset in interface IEncodedStorage
Returns:
the name of a charset
Throws:
CoreException - if this method fails. Reasons include:
  • This resource could not be read.
  • This resource is not local.
  • The corresponding location in the local file system is occupied by a directory.
Since:
3.0
See Also:
getCharset(boolean), IEncodedStorage.getCharset(), IContainer.getDefaultCharset()

getCharset

String getCharset(boolean checkImplicit)
                  throws 
CoreException
Returns the name of a charset to be used when decoding the contents of this file into characters.

If checkImplicit is false, this method will return the charset defined by calling setCharset, provided this file exists, or null otherwise.

If checkImplicit is true, this method uses the following algorithm to determine the charset to be returned:

  1. the charset defined by calling #setCharset, if any, and this file exists, or
  2. the charset automatically discovered based on this file's contents, if one can be determined, or
  3. the default encoding for this file's parent (as defined by IContainer#getDefaultCharset).

Note 1: this method does not check whether the result is a supported charset name. Callers should be prepared to handle UnsupportedEncodingException where this charset is used.

Note 2: this method returns a cached value for the encoding that may be out of date if the file is not synchronized with the local file system and the encoding has since changed in the file system.

Returns:
the name of a charset, or null
Throws:
CoreException - if this method fails. Reasons include:
  • This resource could not be read.
  • This resource is not local.
  • The corresponding location in the local file system is occupied by a directory.
Since:
3.0
See Also:
IEncodedStorage.getCharset(), IContainer.getDefaultCharset()

getCharsetFor

String getCharsetFor(
Reader reader)
                     throws 
CoreException
Returns the name of a charset to be used to encode the given contents when saving to this file. This file does not have to exist. The character stream is not automatically closed.

This method uses the following algorithm to determine the charset to be returned:

  1. if this file exists, the charset returned by IFile#getCharset(false), if one is defined, or
  2. the charset automatically discovered based on the file name and the given contents, if one can be determined, or
  3. the default encoding for the parent resource (as defined by IContainer#getDefaultCharset).

Note: this method does not check whether the result is a supported charset name. Callers should be prepared to handle UnsupportedEncodingException where this charset is used.

Parameters:
reader - a character stream containing the contents to be saved into this file
Returns:
the name of a charset
Throws:
CoreException - if this method fails. Reasons include:
  • The given character stream could not be read.
Since:
3.1
See Also:
getCharset(boolean), IContainer.getDefaultCharset()

getContentDescription

IContentDescription getContentDescription()
                                          throws 
CoreException
Returns a description for this file's current contents. Returns null if a description cannot be obtained.

Calling this method produces a similar effect as calling getDescriptionFor(getContents(), getName(), IContentDescription.ALL) on IContentTypeManager, but provides better opportunities for improved performance. Therefore, when manipulating IFiles, clients should call this method instead of IContentTypeManager.getDescriptionFor.

Returns:
a description for this file's current contents, or null
Throws:
CoreException - if this method fails. Reasons include:
  • This resource does not exist.
  • This resource could not be read.
  • This resource is not local.
  • The workspace is not in sync with the corresponding location in the local file system.
  • The corresponding location in the local file system is occupied by a directory.
Since:
3.0
See Also:
IContentDescription, IContentTypeMatcher.getDescriptionFor(InputStream, String, QualifiedName[])

getContents

InputStream getContents()
                        throws 
CoreException
Returns an open input stream on the contents of this file. This refinement of the corresponding IStorage method returns an open input stream on the contents of this file. The client is responsible for closing the stream when finished.

Specified by:
getContents in interface IStorage
Returns:
an input stream containing the contents of the file
Throws:
CoreException - if this method fails. Reasons include:
  • This resource does not exist.
  • This resource is not local.
  • The workspace is not in sync with the corresponding location in the local file system.

getContents

InputStream getContents(boolean force)
                        throws 
CoreException
This refinement of the corresponding IStorage method returns an open input stream on the contents of this file. The client is responsible for closing the stream when finished. If force is true the file is opened and an input stream returned regardless of the sync state of the file. The file is not synchronized with the workspace. If force is false the method fails if not in sync.

Parameters:
force - a flag controlling how to deal with resources that are not in sync with the local file system
Returns:
an input stream containing the contents of the file
Throws:
CoreException - if this method fails. Reasons include:
  • This resource does not exist.
  • This resource is not local.
  • The workspace is not in sync with the corresponding location in the local file system and force is false.

getEncoding

int getEncoding()
                throws 
CoreException
Deprecated. use IFile#getCharset instead

Returns a constant identifying the character encoding of this file, or ENCODING_UNKNOWN if it could not be determined. The returned constant will be one of the ENCODING_* constants defined on IFile. This method attempts to guess the file's character encoding by analyzing the first few bytes of the file. If no identifying pattern is found at the beginning of the file, ENC_UNKNOWN will be returned. This method will not attempt any complex analysis of the file to make a guess at the encoding that is used.

Returns:
The character encoding of this file
Throws:
CoreException - if this method fails. Reasons include:
  • This resource does not exist.
  • This resource could not be read.
  • This resource is not local.
  • The corresponding location in the local file system is occupied by a directory.

getFullPath

IPath getFullPath()
Returns the full path of this file. This refinement of the corresponding IStorage and IResource methods links the semantics of resource and storage object paths such that IFiles always have a path and that path is relative to the containing workspace.

Specified by:
getFullPath in interface IResource
Specified by:
getFullPath in interface IStorage
Returns:
the absolute path of this resource
See Also:
IResource.getFullPath(), IStorage.getFullPath()

getHistory

IFileState[] getHistory(
IProgressMonitor monitor)
                        throws 
CoreException
Returns a list of past states of this file known to this workspace. Recently added states first.

This method is long-running; progress and cancellation are provided by the given progress monitor.

Parameters:
monitor - a progress monitor, or null if progress reporting is not desired
Returns:
an array of states of this file
Throws:
CoreException - if this method fails.
OperationCanceledException - if the operation is canceled. Cancelation can occur even if no progress monitor is provided.

getName

String getName()
Returns the name of this file. This refinement of the corresponding IStorage and IResource methods links the semantics of resource and storage object names such that IFiles always have a name and that name equivalent to the last segment of its full path.

Specified by:
getName in interface IResource
Specified by:
getName in interface IStorage
Returns:
the name of the resource
See Also:
IResource.getName(), IStorage.getName()

isReadOnly

boolean isReadOnly()
Returns whether this file is read-only. This refinement of the corresponding IStorage and IResource methods links the semantics of read-only resources and read-only storage objects.

Specified by:
isReadOnly in interface IResource
Specified by:
isReadOnly in interface IStorage
Returns:
true if this resource is read-only, false otherwise
See Also:
IResource.isReadOnly(), IStorage.isReadOnly()

move

void move(
IPath destination,
          boolean force,
          boolean keepHistory,
          
IProgressMonitor monitor)
          throws 
CoreException
Moves this resource to be at the given location.

This is a convenience method, fully equivalent to:

   move(destination, (keepHistory ? KEEP_HISTORY : IResource.NONE) | (force ? FORCE : IResource.NONE), monitor);
 

This method changes resources; these changes will be reported in a subsequent resource change event, including an indication that this file has been removed from its parent and a new file has been added to the parent of the destination.

This method is long-running; progress and cancellation are provided by the given progress monitor.

Parameters:
destination - the destination path
force - a flag controlling whether resources that are not in sync with the local file system will be tolerated
keepHistory - a flag controlling whether files under this folder should be stored in the workspace's local history
monitor - a progress monitor, or null if progress reporting is not desired
Throws:
CoreException - if this resource could not be moved. Reasons include:
  • This resource does not exist.
  • This resource is not local.
  • The resource corresponding to the parent destination path does not exist.
  • The resource corresponding to the parent destination path is a closed project.
  • A resource at destination path does exist.
  • A resource of a different type exists at the destination path.
  • This resource is out of sync with the local file system and force is false.
  • The workspace and the local file system are out of sync at the destination resource or one of its descendents.
  • Resource changes are disallowed during certain types of resource change event notification. See IResourceChangeEvent for more details.
OperationCanceledException - if the operation is canceled. Cancelation can occur even if no progress monitor is provided.
See Also:
IResource.move(IPath,int,IProgressMonitor), IResourceRuleFactory.moveRule(IResource, IResource)

setCharset

void setCharset(
String newCharset)
                throws 
CoreException
Deprecated. Replaced by setCharset(String, IProgressMonitor) which is a workspace operation and reports changes in resource deltas.

Sets the charset for this file. Passing a value of null will remove the charset setting for this resource.

Parameters:
newCharset - a charset name, or null
Throws:
CoreException - if this method fails. Reasons include:
  • This resource does not exist.
  • An error happened while persisting this setting.
Since:
3.0
See Also:
getCharset()

setCharset

void setCharset(
String newCharset,
                
IProgressMonitor monitor)
                throws 
CoreException
Sets the charset for this file. Passing a value of null will remove the charset setting for this resource.

This method changes resources; these changes will be reported in a subsequent resource change event, including an indication that this file's encoding has changed.

This method is long-running; progress and cancellation are provided by the given progress monitor.

Parameters:
newCharset - a charset name, or null
monitor - a progress monitor, or null if progress reporting is not desired
Throws:
OperationCanceledException - if the operation is canceled. Cancelation can occur even if no progress monitor is provided.
CoreException - if this method fails. Reasons include:
  • This resource does not exist.
  • An error happened while persisting this setting.
  • Resource changes are disallowed during certain types of resource change event notification. See IResourceChangeEvent for more details.
Since:
3.0
See Also:
getCharset(), IResourceRuleFactory.charsetRule(IResource)

setContents

void setContents(
InputStream source,
                 boolean force,
                 boolean keepHistory,
                 
IProgressMonitor monitor)
                 throws 
CoreException
Sets the contents of this file to the bytes in the given input stream.

This is a convenience method, fully equivalent to:

   setContents(source, (keepHistory ? KEEP_HISTORY : IResource.NONE) | (force ? FORCE : IResource.NONE), monitor);
 

This method changes resources; these changes will be reported in a subsequent resource change event, including an indication that this file's contents have been changed.

This method is long-running; progress and cancellation are provided by the given progress monitor.

Parameters:
source - an input stream containing the new contents of the file
force - a flag controlling how to deal with resources that are not in sync with the local file system
keepHistory - a flag indicating whether or not store the current contents in the local history
monitor - a progress monitor, or null if progress reporting is not desired
Throws:
CoreException - if this method fails. Reasons include:
  • This resource does not exist.
  • The corresponding location in the local file system is occupied by a directory.
  • The workspace is not in sync with the corresponding location in the local file system and force is false.
  • Resource changes are disallowed during certain types of resource change event notification. See IResourceChangeEvent for more details.
  • The file modification validator disallowed the change.
OperationCanceledException - if the operation is canceled. Cancelation can occur even if no progress monitor is provided.
See Also:
setContents(java.io.InputStream,int,IProgressMonitor)

setContents

void setContents(
IFileState source,
                 boolean force,
                 boolean keepHistory,
                 
IProgressMonitor monitor)
                 throws 
CoreException
Sets the contents of this file to the bytes in the given file state.

This is a convenience method, fully equivalent to:

   setContents(source, (keepHistory ? KEEP_HISTORY : IResource.NONE) | (force ? FORCE : IResource.NONE), monitor);
 

This method changes resources; these changes will be reported in a subsequent resource change event, including an indication that this file's content have been changed.

This method is long-running; progress and cancellation are provided by the given progress monitor.

Parameters:
source - a previous state of this resource
force - a flag controlling how to deal with resources that are not in sync with the local file system
keepHistory - a flag indicating whether or not store the current contents in the local history
monitor - a progress monitor, or null if progress reporting is not desired
Throws:
CoreException - if this method fails. Reasons include:
  • This resource does not exist.
  • The state does not exist.
  • The corresponding location in the local file system is occupied by a directory.
  • The workspace is not in sync with the corresponding location in the local file system and force is false.
  • Resource changes are disallowed during certain types of resource change event notification. See IResourceChangeEvent for more details.
  • The file modification validator disallowed the change.
OperationCanceledException - if the operation is canceled. Cancelation can occur even if no progress monitor is provided.
See Also:
setContents(IFileState,int,IProgressMonitor)

setContents

void setContents(
InputStream source,
                 int updateFlags,
                 
IProgressMonitor monitor)
                 throws 
CoreException
Sets the contents of this file to the bytes in the given input stream. The stream will get closed whether this method succeeds or fails. If the stream is null then the content is set to be the empty sequence of bytes.

The FORCE update flag controls how this method deals with cases where the workspace is not completely in sync with the local file system. If FORCE is not specified, the method will only attempt to overwrite a corresponding file in the local file system provided it is in sync with the workspace. This option ensures there is no unintended data loss; it is the recommended setting. However, if FORCE is specified, an attempt will be made to write a corresponding file in the local file system, overwriting any existing one if need be. In either case, if this method succeeds, the resource will be marked as being local (even if it wasn't before).

The KEEP_HISTORY update flag controls whether or not a copy of current contents of this file should be captured in the workspace's local history (properties are not recorded in the local history). The local history mechanism serves as a safety net to help the user recover from mistakes that might otherwise result in data loss. Specifying KEEP_HISTORY is recommended except in circumstances where past states of the files are of no conceivable interest to the user. Note that local history is maintained with each individual project, and gets discarded when a project is deleted from the workspace. This flag is ignored if the file was not previously local.

Update flags other than FORCE and KEEP_HISTORY are ignored.

Prior to modifying the contents of this file, the file modification validator (if provided by the VCM plug-in), will be given a chance to perform any last minute preparations. Validation is performed by calling IFileModificationValidator.validateSave on this file. If the validation fails, then this operation will fail.

This method changes resources; these changes will be reported in a subsequent resource change event, including an indication that this file's content have been changed.

This method is long-running; progress and cancellation are provided by the given progress monitor.

Parameters:
source - an input stream containing the new contents of the file
updateFlags - bit-wise or of update flag constants (FORCE and KEEP_HISTORY)
monitor - a progress monitor, or null if progress reporting is not desired
Throws:
CoreException - if this method fails. Reasons include:
  • This resource does not exist.
  • The corresponding location in the local file system is occupied by a directory.
  • The workspace is not in sync with the corresponding location in the local file system and FORCE is not specified.
  • Resource changes are disallowed during certain types of resource change event notification. See IResourceChangeEvent for more details.
  • The file modification validator disallowed the change.
OperationCanceledException - if the operation is canceled. Cancelation can occur even if no progress monitor is provided.
Since:
2.0
See Also:
IResourceRuleFactory.modifyRule(IResource)

setContents

void setContents(
IFileState source,
                 int updateFlags,
                 
IProgressMonitor monitor)
                 throws 
CoreException
Sets the contents of this file to the bytes in the given file state.

The FORCE update flag controls how this method deals with cases where the workspace is not completely in sync with the local file system. If FORCE is not specified, the method will only attempt to overwrite a corresponding file in the local file system provided it is in sync with the workspace. This option ensures there is no unintended data loss; it is the recommended setting. However, if FORCE is specified, an attempt will be made to write a corresponding file in the local file system, overwriting any existing one if need be. In either case, if this method succeeds, the resource will be marked as being local (even if it wasn't before).

The KEEP_HISTORY update flag controls whether or not a copy of current contents of this file should be captured in the workspace's local history (properties are not recorded in the local history). The local history mechanism serves as a safety net to help the user recover from mistakes that might otherwise result in data loss. Specifying KEEP_HISTORY is recommended except in circumstances where past states of the files are of no conceivable interest to the user. Note that local history is maintained with each individual project, and gets discarded when a project is deleted from the workspace. This flag is ignored if the file was not previously local.

Update flags other than FORCE and KEEP_HISTORY are ignored.

Prior to modifying the contents of this file, the file modification validator (if provided by the VCM plug-in), will be given a chance to perform any last minute preparations. Validation is performed by calling IFileModificationValidator.validateSave on this file. If the validation fails, then this operation will fail.

This method changes resources; these changes will be reported in a subsequent resource change event, including an indication that this file's content have been changed.

This method is long-running; progress and cancellation are provided by the given progress monitor.

Parameters:
source - a previous state of this resource
updateFlags - bit-wise or of update flag constants (FORCE and KEEP_HISTORY)
monitor - a progress monitor, or null if progress reporting is not desired
Throws:
CoreException - if this method fails. Reasons include:
  • This resource does not exist.
  • The state does not exist.
  • The corresponding location in the local file system is occupied by a directory.
  • The workspace is not in sync with the corresponding location in the local file system and FORCE is not specified.
  • Resource changes are disallowed during certain types of resource change event notification. See IResourceChangeEvent for more details.
  • The file modification validator disallowed the change.
OperationCanceledException - if the operation is canceled. Cancelation can occur even if no progress monitor is provided.
Since:
2.0
See Also:
IResourceRuleFactory.modifyRule(IResource)

Eclipse Platform
Release 3.5

Guidelines for using Eclipse APIs.

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