M
- the kind of file manager forwarded to by this objectCloseable
, Flushable
, AutoCloseable
, JavaFileManager
, OptionChecker
public class ForwardingJavaFileManager<M extends JavaFileManager> extends Object implements JavaFileManager
Unless stated otherwise, references in this class to "this file manager" should be interpreted as referring indirectly to the delegate file manager
.
JavaFileManager.Location
Modifier and Type | Field | Description |
---|---|---|
protected final M |
fileManager |
The file manager to which all methods are delegated. |
Modifier | Constructor | Description |
---|---|---|
protected |
Creates a new instance of ForwardingJavaFileManager . |
Modifier and Type | Method | Description |
---|---|---|
void |
close() |
Releases any resources opened by this file manager directly or indirectly. |
boolean |
contains |
Determines whether or not a given file object is "contained in" a specified location. |
void |
flush() |
Flushes any resources opened for output by this file manager directly or indirectly. |
ClassLoader |
getClassLoader |
Returns a class loader for loading plug-ins from the given package-oriented location. |
FileObject |
getFileForInput |
Returns a file object for input representing the specified relative name in the specified package in the given package-oriented location. |
FileObject |
getFileForOutput |
Returns a file object for output representing the specified relative name in the specified package in the given location. |
FileObject |
getFileForOutputForOriginatingFiles |
Returns a file object for output representing the specified relative name in the specified package in the given location. |
JavaFileObject |
getJavaFileForInput |
Returns a file object for input representing the specified class of the specified kind in the given package-oriented location. |
JavaFileObject |
getJavaFileForOutput |
Returns a file object for output representing the specified class of the specified kind in the given package-oriented location. |
JavaFileObject |
getJavaFileForOutputForOriginatingFiles |
Returns a file object for output representing the specified class of the specified kind in the given package-oriented location. |
JavaFileManager.Location |
getLocationForModule |
Gets a location for a named module within a location, which may be either a module-oriented location or an output location. |
JavaFileManager.Location |
getLocationForModule |
Gets a location for the module containing a specific file to be found within a location, which may be either a module-oriented location or an output location. |
<S> ServiceLoader |
getServiceLoader |
Get a service loader for a specific service class from a given location. |
boolean |
handleOption |
Handles one option. |
boolean |
hasLocation |
Determines if a location is known to this file manager. |
String |
inferBinaryName |
Infers a binary name of a file object based on a package-oriented location. |
String |
inferModuleName |
Infer the name of the module from its location, as returned by getLocationForModule or listModuleLocations . |
boolean |
isSameFile |
Compares two file objects and return true if they represent the same underlying object. |
int |
isSupportedOption |
Determines if the given option is supported and if so, the number of arguments the option takes. |
Iterable |
list |
Lists all file objects matching the given criteria in the given package-oriented location. |
Iterable |
listLocationsForModules |
Lists the locations for all the modules in a module-oriented location or an output location. |
protected final M extends JavaFileManager fileManager
protected ForwardingJavaFileManager(M fileManager)
ForwardingJavaFileManager
.fileManager
- delegate to this file managerpublic ClassLoader getClassLoader(JavaFileManager.Location location)
JavaFileManager
ANNOTATION_PROCESSOR_PATH
location.getClassLoader
in interface JavaFileManager
location
- a locationnull
if loading plug-ins from the given location is disabled or if the location is not knownSecurityException
- if a class loader can not be created in the current security contextIllegalStateException
- if JavaFileManager.close()
has been called and this file manager cannot be reopenedpublic Iterable<JavaFileObject> list(JavaFileManager.Location location, String packageName, Set<JavaFileObject.Kind> kinds, boolean recurse) throws IOException
JavaFileManager
Note: even if the given location is unknown to this file manager, it may not return null
. Also, an unknown location may not cause an exception.
list
in interface JavaFileManager
location
- a locationpackageName
- a package namekinds
- return objects only of these kindsrecurse
- if true include "subpackages"IOException
- if an I/O error occurred, or if JavaFileManager.close()
has been called and this file manager cannot be reopenedIllegalStateException
- if JavaFileManager.close()
has been called and this file manager cannot be reopenedpublic String inferBinaryName(JavaFileManager.Location location, JavaFileObject file)
JavaFileManager
inferBinaryName
in interface JavaFileManager
location
- a locationfile
- a file objectnull
the file object is not found in the given locationIllegalStateException
- if JavaFileManager.close()
has been called and this file manager cannot be reopenedpublic boolean isSameFile(FileObject a, FileObject b)
JavaFileManager
isSameFile
in interface JavaFileManager
a
- a file objectb
- a file objectIllegalArgumentException
- if either of the arguments were created with another file manager and this file manager does not support foreign file objectspublic boolean handleOption(String current, Iterator<String> remaining)
JavaFileManager
current
is an option to this file manager it will consume any arguments to that option from remaining
and return true, otherwise return false.handleOption
in interface JavaFileManager
current
- current optionremaining
- remaining optionsIllegalArgumentException
- if this option to this file manager is used incorrectlyIllegalStateException
- if JavaFileManager.close()
has been called and this file manager cannot be reopenedpublic boolean hasLocation(JavaFileManager.Location location)
JavaFileManager
hasLocation
in interface JavaFileManager
location
- a locationpublic int isSupportedOption(String option)
OptionChecker
isSupportedOption
in interface OptionChecker
option
- an optionpublic JavaFileObject getJavaFileForInput(JavaFileManager.Location location, String className, JavaFileObject.Kind kind) throws IOException
JavaFileManager
getJavaFileForInput
in interface JavaFileManager
location
- a locationclassName
- the name of a classkind
- the kind of file, must be one of SOURCE
or CLASS
null
if the file does not existIllegalArgumentException
- if the location is not known to this file manager and the file manager does not support unknown locations, or if the kind is not valid, or if the location is a module-oriented locationIllegalStateException
- if JavaFileManager.close()
has been called and this file manager cannot be reopenedIOException
- if an I/O error occurred, or if JavaFileManager.close()
has been called and this file manager cannot be reopenedpublic JavaFileObject getJavaFileForOutput(JavaFileManager.Location location, String className, JavaFileObject.Kind kind, FileObject sibling) throws IOException
JavaFileManager
Optionally, this file manager might consider the sibling as a hint for where to place the output. The exact semantics of this hint is unspecified. The JDK compiler, javac, for example, will place class files in the same directories as originating source files unless a class file output directory is provided. To facilitate this behavior, javac might provide the originating source file as sibling when calling this method.
getJavaFileForOutput
in interface JavaFileManager
location
- a package-oriented locationclassName
- the name of a classkind
- the kind of file, must be one of SOURCE
or CLASS
sibling
- a file object to be used as hint for placement; might be null
IllegalArgumentException
- if sibling is not known to this file manager, or if the location is not known to this file manager and the file manager does not support unknown locations, or if the kind is not valid, or if the location is not an output locationIllegalStateException
- JavaFileManager.close()
has been called and this file manager cannot be reopenedIOException
- if an I/O error occurred, or if JavaFileManager.close()
has been called and this file manager cannot be reopenedpublic JavaFileObject getJavaFileForOutputForOriginatingFiles(JavaFileManager.Location location, String className, JavaFileObject.Kind kind, FileObject... originatingFiles) throws IOException
The provided originatingFiles
represent files that were, in an unspecified way, used to create the content of the file created by this method. See originatingElements
in Filer.createSourceFile(java.lang.CharSequence, javax.lang.model.element.Element...)
. Elements.getFileObjectOf(javax.lang.model.element.Element)
may be used to convert the Element
s to FileObject
s.
getJavaFileForOutputForOriginatingFiles
in interface JavaFileManager
ForwardingJavaFileManager
overrides the getJavaFileForOutput(javax.tools.JavaFileManager.Location, java.lang.String, javax.tools.JavaFileObject.Kind, javax.tools.FileObject)
method, this method will delegate to it as per the general contract of JavaFileManager.getJavaFileForOutputForOriginatingFiles(javax.tools.JavaFileManager.Location, java.lang.String, javax.tools.JavaFileObject.Kind, javax.tools.FileObject...)
. If the subclass does not override the method, the call will be delegated to the fileManager
.location
- a package-oriented locationclassName
- the name of a classkind
- the kind of file, must be one of SOURCE
or CLASS
originatingFiles
- the files which are contributing to this newly created file; null
is equivalent to empty originatingFiles
, meaning no known originating filesIllegalArgumentException
- if sibling is not known to this file manager, or if the location is not known to this file manager and the file manager does not support unknown locations, or if the kind is not valid, or if the location is not an output locationIllegalStateException
- JavaFileManager.close()
has been called and this file manager cannot be reopenedIOException
- if an I/O error occurred, or if JavaFileManager.close()
has been called and this file manager cannot be reopenedpublic FileObject getFileForInput(JavaFileManager.Location location, String packageName, String relativeName) throws IOException
JavaFileManager
If the returned object represents a source or class file, it must be an instance of JavaFileObject
.
Informally, the file object returned by this method is located in the concatenation of the location, package name, and relative name. For example, to locate the properties file "resources/compiler.properties" in the package "com.sun.tools.javac" in the SOURCE_PATH location, this method might be called like so:
getFileForInput(SOURCE_PATH, "com.sun.tools.javac", "resources/compiler.properties");
If the call was executed on Windows, with SOURCE_PATH set to "C:\Documents and Settings\UncleBob\src\share\classes"
, a valid result would be a file object representing the file "C:\Documents and Settings\UncleBob\src\share\classes\com\sun\tools\javac\resources\compiler.properties"
.
getFileForInput
in interface JavaFileManager
location
- a package-oriented locationpackageName
- a package namerelativeName
- a relative namenull
if the file does not existIllegalArgumentException
- if the location is not known to this file manager and the file manager does not support unknown locations, or if relativeName
is not valid, or if the location is a module-oriented locationIllegalStateException
- if JavaFileManager.close()
has been called and this file manager cannot be reopenedIOException
- if an I/O error occurred, or if JavaFileManager.close()
has been called and this file manager cannot be reopenedpublic FileObject getFileForOutput(JavaFileManager.Location location, String packageName, String relativeName, FileObject sibling) throws IOException
JavaFileManager
Optionally, this file manager might consider the sibling as a hint for where to place the output. The exact semantics of this hint is unspecified. The JDK compiler, javac, for example, will place class files in the same directories as originating source files unless a class file output directory is provided. To facilitate this behavior, javac might provide the originating source file as sibling when calling this method.
If the returned object represents a source or class file, it must be an instance of JavaFileObject
.
Informally, the file object returned by this method is located in the concatenation of the location, package name, and relative name or next to the sibling argument. See getFileForInput
for an example.
getFileForOutput
in interface JavaFileManager
location
- an output locationpackageName
- a package namerelativeName
- a relative namesibling
- a file object to be used as hint for placement; might be null
IllegalArgumentException
- if sibling is not known to this file manager, or if the location is not known to this file manager and the file manager does not support unknown locations, or if relativeName
is not valid, or if the location is not an output locationIllegalStateException
- if JavaFileManager.close()
has been called and this file manager cannot be reopenedIOException
- if an I/O error occurred, or if JavaFileManager.close()
has been called and this file manager cannot be reopenedpublic FileObject getFileForOutputForOriginatingFiles(JavaFileManager.Location location, String packageName, String relativeName, FileObject... originatingFiles) throws IOException
The provided originatingFiles
represent files that were, in an unspecified way, used to create the content of the file created by this method. See originatingElements
in Filer.createResource(javax.tools.JavaFileManager.Location, java.lang.CharSequence, java.lang.CharSequence, javax.lang.model.element.Element...)
. Elements.getFileObjectOf(javax.lang.model.element.Element)
may be used to convert the Element
s to FileObject
s.
If the returned object represents a source or class file, it must be an instance of JavaFileObject
.
Informally, the file object returned by this method is located in the concatenation of the location, package name, and relative name or in a location inferred from the originatingFiles
. See getFileForInput
for an example.
getFileForOutputForOriginatingFiles
in interface JavaFileManager
ForwardingJavaFileManager
overrides the getFileForOutput(javax.tools.JavaFileManager.Location, java.lang.String, java.lang.String, javax.tools.FileObject)
method, this method will delegate to it as per the general contract of JavaFileManager.getFileForOutputForOriginatingFiles(javax.tools.JavaFileManager.Location, java.lang.String, java.lang.String, javax.tools.FileObject...)
. If the subclass does not override the method, the call will be delegated to the fileManager
.location
- an output locationpackageName
- a package namerelativeName
- a relative nameoriginatingFiles
- the files which are contributing to this newly created file; null
is equivalent to empty originatingFiles
, meaning no known originating filesIllegalArgumentException
- if sibling is not known to this file manager, or if the location is not known to this file manager and the file manager does not support unknown locations, or if relativeName
is not valid, or if the location is not an output locationIllegalStateException
- if JavaFileManager.close()
has been called and this file manager cannot be reopenedIOException
- if an I/O error occurred, or if JavaFileManager.close()
has been called and this file manager cannot be reopenedpublic void flush() throws IOException
JavaFileManager
flush
in interface Flushable
flush
in interface JavaFileManager
IOException
- if an I/O error occurredpublic void close() throws IOException
JavaFileManager
close
in interface AutoCloseable
close
in interface Closeable
close
in interface JavaFileManager
IOException
- if an I/O error occurredpublic JavaFileManager.Location getLocationForModule(JavaFileManager.Location location, String moduleName) throws IOException
JavaFileManager
getLocationForModule
in interface JavaFileManager
location
- the module-oriented locationmoduleName
- the name of the module to be foundIOException
- if an I/O error occurredpublic JavaFileManager.Location getLocationForModule(JavaFileManager.Location location, JavaFileObject fo) throws IOException
JavaFileManager
getLocationForModule
in interface JavaFileManager
location
- the module-oriented locationfo
- the fileIOException
- if an I/O error occurredpublic <S> ServiceLoader<S> getServiceLoader(JavaFileManager.Location location, Class<S> service) throws IOException
JavaFileManager
META-INF/services
.getServiceLoader
in interface JavaFileManager
S
- the service classlocation
- the module-oriented locationservice
- the Class
object of the service classIOException
- if an I/O error occurredpublic String inferModuleName(JavaFileManager.Location location) throws IOException
JavaFileManager
getLocationForModule
or listModuleLocations
.inferModuleName
in interface JavaFileManager
location
- a package-oriented location representing a moduleIOException
- if an I/O error occurredpublic Iterable<Set<JavaFileManager.Location>> listLocationsForModules(JavaFileManager.Location location) throws IOException
JavaFileManager
listLocationsForModules
in interface JavaFileManager
location
- the module-oriented location for which to list the modulesIOException
- if an I/O error occurredpublic boolean contains(JavaFileManager.Location location, FileObject fo) throws IOException
JavaFileManager
For a package-oriented location, a file object is contained in the location if there exist values for packageName and relativeName such that either of the following calls would return the same
file object:
getFileForInput(location, packageName, relativeName)
getFileForOutput(location, packageName, relativeName, null)
For a module-oriented location, a file object is contained in the location if there exists a module that may be obtained by the call:
getLocationForModule(location, moduleName)
contains
in interface JavaFileManager
location
- the locationfo
- the file objectIOException
- if there is a problem determining the result
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https://docs.oracle.com/en/java/javase/21/docs/api/java.compiler/javax/tools/ForwardingJavaFileManager.html