Java Doc for JarDBFile.java in  » Database-DBMS » db-derby-10.2 » org » apache » derby » impl » io » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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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    org.apache.derby.impl.io.InputStreamFile       org.apache.derby.impl.io.JarDBFile JarDBFile class JarDBFile extends InputStreamFile (Code) This class provides a jar file based implementation of the StorageFile interface. It is used by the database engine to access persistent data and transaction logs under the jar subsubprotocol. Constructor Summary   JarDBFile(JarStorageFactory storageFactory, String path)        JarDBFile(JarStorageFactory storageFactory, String parent, String name)        JarDBFile(JarDBFile dir, String name)      Method Summary public  boolean exists()      Tests whether the named file exists. public  InputStream getInputStream()      Creates an input stream from a file name.  StorageFile getParentDir(int pathLen)      Get the name of the parent directory if this name includes a parent. public  URL getURL()      Return a URL for this file (resource). public  long length()      Returns the length of the named file if it is not a directory. public  String toString()      Get the file name for diagnostic purposes. Constructor Detail JarDBFile JarDBFile(JarStorageFactory storageFactory, String path)(Code) JarDBFile JarDBFile(JarStorageFactory storageFactory, String parent, String name)(Code) JarDBFile JarDBFile(JarDBFile dir, String name)(Code) Method Detail exists public boolean exists()(Code) Tests whether the named file exists. true if the named file exists, false if not. getInputStream public InputStream getInputStream() throws FileNotFoundException(Code) Creates an input stream from a file name. an input stream suitable for reading from the file. exception:   FileNotFoundException - if the file is not found. getParentDir StorageFile getParentDir(int pathLen)(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. getURL public URL getURL() throws MalformedURLException(Code) Return a URL for this file (resource). Returns a URL according to the spec for java.net.JarURLConnection See Also:   org.apache.derby.io.StorageFile.getURL length public long length()(Code) Returns the length of the named file if it is not a directory. The return value is not specified if the file is a directory. The length, in bytes, of the named file if it exists and is not a directory,0 if the file does not exist, or any value if the named file is a directory. toString public String toString()(Code) Get the file name for diagnostic purposes. Usually the same as getPath(). the file name Fields inherited from org.apache.derby.impl.io.InputStreamFile final int nameStart(Code)(Java Doc) final String path(Code)(Java Doc) final BaseStorageFactory storageFactory(Code)(Java Doc) Methods inherited from org.apache.derby.impl.io.InputStreamFile public boolean canWrite()(Code)(Java Doc) public boolean createNewFile() throws IOException(Code)(Java Doc) public boolean delete()(Code)(Java Doc) public boolean deleteAll()(Code)(Java Doc) public boolean equals(Object other)(Code)(Java Doc) abstract public boolean exists()(Code)(Java Doc) public String getCanonicalPath() throws IOException(Code)(Java Doc) public int getExclusiveFileLock()(Code)(Java Doc) abstract public InputStream getInputStream() throws FileNotFoundException(Code)(Java Doc) public String getName()(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) abstract StorageFile getParentDir(int pathLen)(Code)(Java Doc) public String getPath()(Code)(Java Doc) public StorageRandomAccessFile getRandomAccessFile(String mode) throws FileNotFoundException(Code)(Java Doc) public URL getURL() throws MalformedURLException(Code)(Java Doc) public int hashCode()(Code)(Java Doc) public boolean isDirectory()(Code)(Java Doc) public long length()(Code)(Java Doc) public String[] list()(Code)(Java Doc) public boolean mkdir()(Code)(Java Doc) public boolean mkdirs()(Code)(Java Doc) public void releaseExclusiveFileLock()(Code)(Java Doc) public boolean renameTo(StorageFile newName)(Code)(Java Doc) public boolean setReadOnly()(Code)(Java Doc) public String toString()(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)