Java Doc for FileSystem.java in  » Database-DBMS » h2database » org » h2 » store » fs » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Database DBMS » h2database » org.h2.store.fs   Source Cross Reference   Class Diagram   Java Document (Java Doc)   java.lang.Object    org.h2.store.fs.FileSystem All known Subclasses:   org.h2.store.fs.FileSystemDisk,  org.h2.store.fs.FileSystemMemory,  org.h2.store.fs.FileSystemDatabase,  org.h2.store.fs.FileSystemZip, FileSystem abstract public class FileSystem (Code) The file system is a storage abstraction. Field Summary final public static  String DB_PREFIX      final public static  String MEMORY_PREFIX      final public static  String MEMORY_PREFIX_LZF      final public static  String ZIP_PREFIX      Method Summary abstract public  boolean canWrite(String fileName)      Check if the file is writable. abstract public  void copy(String original, String copy)      Copy a file from one directory to another, or to another file. abstract public  void createDirs(String fileName)      Create all required directories that are required for this file. abstract public  boolean createNewFile(String fileName)      Create a new file. abstract public  String createTempFile(String prefix, String suffix, boolean deleteOnExit, boolean inTempDir)      Create a new temporary file. abstract public  void delete(String fileName)      Delete a file. abstract public  void deleteRecursive(String directory)      Delete a directory or file and all subdirectories and files. abstract public  boolean exists(String fileName)      Checks if a file exists. abstract public  boolean fileStartsWith(String fileName, String prefix)      Check if a file starts with a given prefix. abstract public  String getAbsolutePath(String fileName)      Get the absolute file name. abstract public  String getFileName(String name)      Get the file name (without directory part). public static  FileSystem getInstance(String fileName)      Get the file system object. abstract public  long getLastModified(String fileName)      abstract public  String getParent(String fileName)      Get the parent directory of a file or directory. abstract public  boolean isAbsolute(String fileName)      Check if the file name includes a path. abstract public  boolean isDirectory(String fileName)      Check if it is a file or a directory. abstract public  boolean isReadOnly(String fileName)      Check if a file is read-only. abstract public  long length(String fileName)      Get the length of a file. abstract public  String[] listFiles(String directory)      List the files in the given directory. public  void mkdirs(String directoryName)      Create all required directories. abstract public  String normalize(String fileName)      Normalize a file name. abstract public  InputStream openFileInputStream(String fileName)      Create an input stream to read from the file. abstract public  FileObject openFileObject(String fileName, String mode)      Open a random access file object. Parameters:   fileName - the file name Parameters:   mode - the access mode. abstract public  OutputStream openFileOutputStream(String fileName, boolean append)      Create an output stream to write into the file. abstract public  void rename(String oldName, String newName)      Rename a file if this is allowed. abstract public  boolean tryDelete(String fileName)      Try to delete a file. Field Detail DB_PREFIX final public static String DB_PREFIX(Code) MEMORY_PREFIX final public static String MEMORY_PREFIX(Code) MEMORY_PREFIX_LZF final public static String MEMORY_PREFIX_LZF(Code) ZIP_PREFIX final public static String ZIP_PREFIX(Code) Method Detail canWrite abstract public boolean canWrite(String fileName)(Code) Check if the file is writable. Parameters:   fileName - the file name if the file is writable copy abstract public void copy(String original, String copy) throws SQLException(Code) Copy a file from one directory to another, or to another file. Parameters:   original - the original file name Parameters:   copy - the file name of the copy createDirs abstract public void createDirs(String fileName) throws SQLException(Code) Create all required directories that are required for this file. Parameters:   fileName - the file name (not directory name) createNewFile abstract public boolean createNewFile(String fileName) throws SQLException(Code) Create a new file. Parameters:   fileName - the file name true if creating was successful createTempFile abstract public String createTempFile(String prefix, String suffix, boolean deleteOnExit, boolean inTempDir) throws IOException(Code) Create a new temporary file. Parameters:   prefix - the file name prefix Parameters:   suffix - the file name suffix Parameters:   deleteOnExit - if the file should be deleted when the system exists Parameters:   inTempDir - if the file should be stored in the temp file the file name delete abstract public void delete(String fileName) throws SQLException(Code) Delete a file. Parameters:   fileName - the file name deleteRecursive abstract public void deleteRecursive(String directory) throws SQLException(Code) Delete a directory or file and all subdirectories and files. Parameters:   directory - the directory exists abstract public boolean exists(String fileName)(Code) Checks if a file exists. Parameters:   fileName - the file name true if it exists fileStartsWith abstract public boolean fileStartsWith(String fileName, String prefix)(Code) Check if a file starts with a given prefix. Parameters:   fileName - the complete file name Parameters:   prefix - the prefix true if it starts with the prefix getAbsolutePath abstract public String getAbsolutePath(String fileName)(Code) Get the absolute file name. Parameters:   fileName - the file name the absolute file name getFileName abstract public String getFileName(String name) throws SQLException(Code) Get the file name (without directory part). Parameters:   name - the directory and file name just the file name getInstance public static FileSystem getInstance(String fileName)(Code) Get the file system object. Parameters:   fileName - the file name or prefix the file system getLastModified abstract public long getLastModified(String fileName)(Code) Get the last modified date of a file Parameters:   fileName - the file name the last modified date getParent abstract public String getParent(String fileName)(Code) Get the parent directory of a file or directory. Parameters:   fileName - the file or directory name the parent directory name isAbsolute abstract public boolean isAbsolute(String fileName)(Code) Check if the file name includes a path. Parameters:   fileName - the file name if the file name is absolute isDirectory abstract public boolean isDirectory(String fileName)(Code) Check if it is a file or a directory. Parameters:   fileName - the file or directory name true if it is a directory isReadOnly abstract public boolean isReadOnly(String fileName)(Code) Check if a file is read-only. Parameters:   fileName - the file name if it is read only length abstract public long length(String fileName)(Code) Get the length of a file. Parameters:   fileName - the file name the length in bytes listFiles abstract public String[] listFiles(String directory) throws SQLException(Code) List the files in the given directory. Parameters:   directory - the directory the list of fully qualified file names mkdirs public void mkdirs(String directoryName) throws SQLException(Code) Create all required directories. Parameters:   directoryName - the directory name normalize abstract public String normalize(String fileName) throws SQLException(Code) Normalize a file name. Parameters:   fileName - the file name the normalized file name openFileInputStream abstract public InputStream openFileInputStream(String fileName) throws IOException(Code) Create an input stream to read from the file. Parameters:   fileName - the file name the input stream openFileObject abstract public FileObject openFileObject(String fileName, String mode) throws IOException(Code) Open a random access file object. Parameters:   fileName - the file name Parameters:   mode - the access mode. Supported are r, rw, rws, rwd the file object openFileOutputStream abstract public OutputStream openFileOutputStream(String fileName, boolean append) throws SQLException(Code) Create an output stream to write into the file. Parameters:   fileName - the file name Parameters:   append - if true, the file will grow, if false, the file will betruncated first the output stream rename abstract public void rename(String oldName, String newName) throws SQLException(Code) Rename a file if this is allowed. Parameters:   oldName - the old fully qualified file name Parameters:   newName - the new fully qualified file name throws:   SQLException - tryDelete abstract public boolean tryDelete(String fileName)(Code) Try to delete a file. Parameters:   fileName - the file name true if it could be deleted 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)