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Java Source Code / Java Documentation » Database DBMS » db derby 10.2 » org.apache.derby.impl.io 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.lang.Object
   java.io.File
      org.apache.derby.impl.io.DirFile
         org.apache.derby.impl.io.DirFile4

DirFile4
class DirFile4 extends DirFile (Code)
This class implements the StorageFile interface using features of Java 1.4 not available in earlier versions of Java.



Constructor Summary
 DirFile4(String path, boolean rwsOK)
     Construct a DirFile from a path name.
 DirFile4(String directoryName, String fileName, boolean rwsOK)
     Construct a DirFile from a directory name and a file name.
 DirFile4(DirFile directoryName, String fileName, boolean rwsOK)
     Construct a DirFile from a directory name and a file name.

Method Summary
public synchronized  intgetExclusiveFileLock()
    
public  OutputStreamgetOutputStream(boolean append)
     Creates an output stream from a file name.
Parameters:
  append - If true then data will be appended to the end of the file, if it already exists.If false and a normal file already exists with this name the file will first be truncatedto zero length.
public  StorageFilegetParentDir()
     Get the name of the parent directory if this name includes a parent.
public  StorageRandomAccessFilegetRandomAccessFile(String mode)
     Get a random access (read/write) file.
Parameters:
  mode - "r", "rw", "rws", or "rwd".
public synchronized  voidreleaseExclusiveFileLock()
    


Constructor Detail
DirFile4
DirFile4(String path, boolean rwsOK)(Code)
Construct a DirFile from a path name.
Parameters:
  path - The path name.



DirFile4
DirFile4(String directoryName, String fileName, boolean rwsOK)(Code)
Construct a DirFile from a directory name and a file name.
Parameters:
  directoryName - The directory part of the path name.
Parameters:
  fileName - The name of the file within the directory.



DirFile4
DirFile4(DirFile directoryName, String fileName, boolean rwsOK)(Code)
Construct a DirFile from a directory name and a file name.
Parameters:
  directoryName - The directory part of the path name.
Parameters:
  fileName - The name of the file within the directory.




Method Detail
getExclusiveFileLock
public synchronized int getExclusiveFileLock()(Code)



getOutputStream
public OutputStream getOutputStream(boolean append) throws FileNotFoundException(Code)
Creates an output stream from a file name.
Parameters:
  append - If true then data will be appended to the end of the file, if it already exists.If false and a normal file already exists with this name the file will first be truncatedto zero length. an output stream suitable for writing to the file.
exception:
  FileNotFoundException - if the file exists but is a directoryrather than a regular file, does not exist but cannot be created, orcannot be opened for any other reason.



getParentDir
public StorageFile getParentDir()(Code)
Get the name of the parent directory if this name includes a parent. An StorageFile denoting the parent directory of this StorageFile, if it has a parent, null ifit does not have a parent.



getRandomAccessFile
public StorageRandomAccessFile getRandomAccessFile(String mode) throws FileNotFoundException(Code)
Get a random access (read/write) file.
Parameters:
  mode - "r", "rw", "rws", or "rwd". The "rws" and "rwd" modes specifythat the data is to be written to persistent store, consistent with thejava.io.RandomAccessFile class ("synchronized" with the persistentstorage, in the file system meaning of the word "synchronized"). Howeverthe implementation is not required to implement the "rws" or "rwd"modes. The implementation may treat "rws" and "rwd" as "rw". It is up tothe user of this interface to call the StorageRandomAccessFile.syncmethod. If the "rws" or "rwd" modes are supported and theRandomAccessFile was opened in "rws" or "rwd" mode then theimplementation of StorageRandomAccessFile.sync need not do anything. an object that can be used for random access to the file.
exception:
  IllegalArgumentException - if the mode argument is not equal to one of "r", "rw", "rws", or "rwd".
exception:
  FileNotFoundException - if the file exists but is a directory rather than a regularfile, or cannot be opened or created for any other reason .



releaseExclusiveFileLock
public synchronized void releaseExclusiveFileLock()(Code)



Methods inherited from org.apache.derby.impl.io.DirFile
public boolean deleteAll()(Code)(Java Doc)
public synchronized int getExclusiveFileLock()(Code)(Java Doc)
public InputStream getInputStream() throws FileNotFoundException(Code)(Java Doc)
public OutputStream getOutputStream() throws FileNotFoundException(Code)(Java Doc)
public OutputStream getOutputStream(boolean append) throws FileNotFoundException(Code)(Java Doc)
public StorageFile getParentDir()(Code)(Java Doc)
public StorageRandomAccessFile getRandomAccessFile(String mode) throws FileNotFoundException(Code)(Java Doc)
static StorageFile getTempDir() throws IOException(Code)(Java Doc)
public URL getURL() throws MalformedURLException(Code)(Java Doc)
public synchronized void releaseExclusiveFileLock()(Code)(Java Doc)
public boolean renameTo(StorageFile newName)(Code)(Java Doc)

Fields inherited from java.io.File
final public static String pathSeparator(Code)(Java Doc)
final public static char pathSeparatorChar(Code)(Java Doc)
final public static String separator(Code)(Java Doc)
final public static char separatorChar(Code)(Java Doc)

Methods inherited from java.io.File
public boolean canExecute()(Code)(Java Doc)
public boolean canRead()(Code)(Java Doc)
public boolean canWrite()(Code)(Java Doc)
public int compareTo(File pathname)(Code)(Java Doc)
public boolean createNewFile() throws IOException(Code)(Java Doc)
public static File createTempFile(String prefix, String suffix, File directory) throws IOException(Code)(Java Doc)
public static File createTempFile(String prefix, String suffix) throws IOException(Code)(Java Doc)
public boolean delete()(Code)(Java Doc)
public void deleteOnExit()(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
public boolean exists()(Code)(Java Doc)
public File getAbsoluteFile()(Code)(Java Doc)
public String getAbsolutePath()(Code)(Java Doc)
public File getCanonicalFile() throws IOException(Code)(Java Doc)
public String getCanonicalPath() throws IOException(Code)(Java Doc)
public long getFreeSpace()(Code)(Java Doc)
public String getName()(Code)(Java Doc)
public String getParent()(Code)(Java Doc)
public File getParentFile()(Code)(Java Doc)
public String getPath()(Code)(Java Doc)
public long getTotalSpace()(Code)(Java Doc)
public long getUsableSpace()(Code)(Java Doc)
public int hashCode()(Code)(Java Doc)
public boolean isAbsolute()(Code)(Java Doc)
public boolean isDirectory()(Code)(Java Doc)
public boolean isFile()(Code)(Java Doc)
public boolean isHidden()(Code)(Java Doc)
public long lastModified()(Code)(Java Doc)
public long length()(Code)(Java Doc)
public String[] list()(Code)(Java Doc)
public String[] list(FilenameFilter filter)(Code)(Java Doc)
public File[] listFiles()(Code)(Java Doc)
public File[] listFiles(FilenameFilter filter)(Code)(Java Doc)
public File[] listFiles(FileFilter filter)(Code)(Java Doc)
public static File[] listRoots()(Code)(Java Doc)
public boolean mkdir()(Code)(Java Doc)
public boolean mkdirs()(Code)(Java Doc)
public boolean renameTo(File dest)(Code)(Java Doc)
public boolean setExecutable(boolean executable, boolean ownerOnly)(Code)(Java Doc)
public boolean setExecutable(boolean executable)(Code)(Java Doc)
public boolean setLastModified(long time)(Code)(Java Doc)
public boolean setReadOnly()(Code)(Java Doc)
public boolean setReadable(boolean readable, boolean ownerOnly)(Code)(Java Doc)
public boolean setReadable(boolean readable)(Code)(Java Doc)
public boolean setWritable(boolean writable, boolean ownerOnly)(Code)(Java Doc)
public boolean setWritable(boolean writable)(Code)(Java Doc)
public String toString()(Code)(Java Doc)
public URI toURI()(Code)(Java Doc)
public URL toURL() throws MalformedURLException(Code)(Java Doc)

Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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