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Java Source Code / Java Documentation » EJB Server resin 3.1.5 » resin » com.caucho.vfs

Source Cross Reference Class Diagram Java Document (Java Doc)

com.caucho.vfs .MergePath

MergePath

public class MergePath extends FilesystemPath (Code)

A merging of several Paths used like a CLASSPATH. When the MergePath is opened for read, the first path in the list which contains the file will be the opened file. When the MergePath is opened for write, the first path in the list is used for the write.

In the following example, "first" has priority over "second". If test.xml exists in both "first" and "second", the open will return "first/test.xml".

 MergePage merge = new MergePath();
 merge.addMergePath(Vfs.lookup("first");
 merge.addMergePath(Vfs.lookup("second");
 Path path = merge.lookup("test.xml");
 ReadStream is = path.openRead();

MergePath corresponds to the "merge:" Vfs schema

 Path path = Vfs.lookup("merge:(../custom-foo;foo)");

since:
Resin 1.2
since:
Resin 3.0.10 merge: schema

Constructor Summary
public	MergePath() Creates a new merge path.

Method Summary
public void	addClassPath() Adds the classpath as paths in the MergePath.
public void	addClassPath(ClassLoader loader) Adds the classpath for the loader as paths in the MergePath.
public void	addClassPath(String classpath) Adds the classpath for the loader as paths in the MergePath.
public void	addLocalClassPath() Adds the classpath as paths in the MergePath.
public void	addLocalClassPath(ClassLoader loader) Adds the classpath for the loader as paths in the MergePath.
public void	addMergePath(Path path) Adds a new path to the end of the merge path.
public void	addResourceClassPath(ClassLoader loader) Adds the classpath for the loader as paths in the MergePath.
public boolean	canRead() Returns true if the best path can be read.
public boolean	canWrite() Returns true if the best path can be written to.
public PersistentDependency	createDepend() Creates a dependency.
public boolean	exists() True if any file matching this path exists.
public Path	fsWalk(String userPath, Map<String, Object> attributes, String path) Walking down the path just extends the path.
public Path	getBestPath() Returns the first matching path.
public String	getFullPath() Returns the full path name of the best path.
public long	getLastModified() Returns the last modified time of the best path.
public long	getLength() Returns the length of the best path.
public ArrayList<Path>	getMergePaths() Return the list of paths searched in the merge path.
public String	getNativePath() Returns the full native path name of the best path.
public String	getRelativePath() Returns the relative path into the merge path.
public ArrayList<Path>	getResources(String pathName) Returns all the resources matching the path.
public ArrayList<Path>	getResources() Returns all the resources matching the path.
public String	getScheme() Returns the scheme of the best path.
public String	getURL() Returns the URL of the best path.
public Path	getWritePath() Returns the first matching path.
public boolean	isDirectory() True if the best path is a directory.
public boolean	isFile() True if the best path is a file.
public String[]	list() List the merged directories.
public boolean	mkdir()
public boolean	mkdirs()
public StreamImpl	openAppendImpl() Opens the best path for appending.
public StreamImpl	openReadImpl() Opens the best path for reading.
public StreamImpl	openReadWriteImpl() Opens the best path for reading and writing.
public StreamImpl	openWriteImpl() Opens the best path for writing.
public boolean	remove() Remove the matching path.
public boolean	renameTo(Path path) Renames the path.
protected Path	schemeWalk(String userPath, Map<String, Object> attributes, String filePath, int offset)
public String	toString()

Constructor Detail

MergePath
public MergePath()(Code)
	Creates a new merge path.

Method Detail

addClassPath
public void addClassPath()(Code)
	Adds the classpath as paths in the MergePath.

addClassPath
public void addClassPath(ClassLoader loader)(Code)
	Adds the classpath for the loader as paths in the MergePath. Parameters: loader - class loader whose classpath should be used to search.

addClassPath
public void addClassPath(String classpath)(Code)
	Adds the classpath for the loader as paths in the MergePath. Parameters: classpath - class loader whose classpath should be used to search.

addLocalClassPath
public void addLocalClassPath()(Code)
	Adds the classpath as paths in the MergePath.

addLocalClassPath
public void addLocalClassPath(ClassLoader loader)(Code)
	Adds the classpath for the loader as paths in the MergePath. Parameters: loader - class loader whose classpath should be used to search.

addMergePath
public void addMergePath(Path path)(Code)
	Adds a new path to the end of the merge path. Parameters: path - the new path to search

addResourceClassPath
public void addResourceClassPath(ClassLoader loader)(Code)
	Adds the classpath for the loader as paths in the MergePath. Parameters: loader - class loader whose classpath should be used to search.

canRead
public boolean canRead()(Code)
	Returns true if the best path can be read.

canWrite
public boolean canWrite()(Code)
	Returns true if the best path can be written to.

createDepend
public PersistentDependency createDepend()(Code)
	Creates a dependency.

exists
public boolean exists()(Code)
	True if any file matching this path exists.

fsWalk
public Path fsWalk(String userPath, Map<String, Object> attributes, String path)(Code)
	Walking down the path just extends the path. It won't be evaluated until opening.

getBestPath
public Path getBestPath()(Code)
	Returns the first matching path.

getFullPath
public String getFullPath()(Code)
	Returns the full path name of the best path.

getLastModified
public long getLastModified()(Code)
	Returns the last modified time of the best path.

getLength
public long getLength()(Code)
	Returns the length of the best path.

getMergePaths
public ArrayList<Path> getMergePaths()(Code)
	Return the list of paths searched in the merge path.

getNativePath
public String getNativePath()(Code)
	Returns the full native path name of the best path.

getRelativePath
public String getRelativePath()(Code)
	Returns the relative path into the merge path.

getResources
public ArrayList<Path> getResources(String pathName)(Code)
	Returns all the resources matching the path.

getResources
public ArrayList<Path> getResources()(Code)
	Returns all the resources matching the path.

getScheme
public String getScheme()(Code)
	Returns the scheme of the best path.

getURL
public String getURL()(Code)
	Returns the URL of the best path.

getWritePath
public Path getWritePath()(Code)
	Returns the first matching path.

isDirectory
public boolean isDirectory()(Code)
	True if the best path is a directory.

isFile
public boolean isFile()(Code)
	True if the best path is a file.

list
public String[] list() throws IOException(Code)
	List the merged directories.

mkdir
public boolean mkdir() throws IOException(Code)
	XXX: Probably should mkdir in the first path

mkdirs
public boolean mkdirs() throws IOException(Code)
	XXX: Probably should mkdir in the first path

openAppendImpl
public StreamImpl openAppendImpl() throws IOException(Code)
	Opens the best path for appending. XXX: If the best path doesn't exist, this should probably create the file in the first path.

openReadImpl
public StreamImpl openReadImpl() throws IOException(Code)
	Opens the best path for reading.

openReadWriteImpl
public StreamImpl openReadWriteImpl() throws IOException(Code)
	Opens the best path for reading and writing. XXX: If the best path doesn't exist, this should probably create the file in the first path.

openWriteImpl
public StreamImpl openWriteImpl() throws IOException(Code)
	Opens the best path for writing. XXX: If the best path doesn't exist, this should probably create the file in the first path.

remove
public boolean remove() throws IOException(Code)
	Remove the matching path.

renameTo
public boolean renameTo(Path path) throws IOException(Code)
	Renames the path.

schemeWalk
protected Path schemeWalk(String userPath, Map<String, Object> attributes, String filePath, int offset)(Code)
	schemeWalk is called by Path for a scheme lookup like file:/tmp/foo Parameters: userPath - the user's lookup() path Parameters: attributes - the user's attributes Parameters: filePath - the actual lookup() path Parameters: offset - offset into filePath

toString
public String toString()(Code)
	Returns a name for the path

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