org.apache.jackrabbit.core.fs.db
Class DerbyFileSystem

java.lang.Object
  org.apache.jackrabbit.core.fs.db.DatabaseFileSystem
      org.apache.jackrabbit.core.fs.db.DbFileSystem
          org.apache.jackrabbit.core.fs.db.DerbyFileSystem

All Implemented Interfaces:

FileSystem, DatabaseAware

public class DerbyFileSystem
extends DbFileSystem

DerbyFileSystem is a JDBC-based FileSystem implementation for Jackrabbit that persists file system entries in an embedded Derby database.

It is configured through the following properties:

• url: the database url of the form "jdbc:derby:[db];[attributes]"
• schemaObjectPrefix: prefix to be prepended to schema objects
• driver: the FQN name of the JDBC driver class (default: "org.apache.derby.jdbc.EmbeddedDriver")
• schema: type of schema to be used (default: "derby")
• user: the database user (default: null)
• password: the user's password (default: null)
• shutdownOnClose: if true (the default) the database is shutdown when the last connection is closed; set this to false when using a standalone database

See also DbFileSystem.

The following is a fragment from a sample configuration:

   <FileSystem class="org.apache.jackrabbit.core.fs.db.DerbyFileSystem">
       <param name="url" value="jdbc:derby:${rep.home}/db;create=true"/>
       <param name="schemaObjectPrefix" value="rep_"/>
  </FileSystem>
 

Field Summary

protected boolean

shutdownOnClose Flag indicating whether this derby database should be shutdown on close.

Fields inherited from class org.apache.jackrabbit.core.fs.db.DbFileSystem

dataSourceName, driver, password, url, user

Fields inherited from class org.apache.jackrabbit.core.fs.db.DatabaseFileSystem

conHelper, copyFileSQL, copyFilesSQL, deleteFileSQL, deleteFolderSQL, INITIAL_BUFFER_SIZE, initialized, insertFileSQL, insertFolderSQL, schema, schemaObjectPrefix, selectChildCountSQL, selectDataSQL, selectExistSQL, selectFileAndFolderNamesSQL, selectFileExistSQL, selectFileNamesSQL, selectFolderExistSQL, selectFolderNamesSQL, selectLastModifiedSQL, selectLengthSQL, updateDataSQL, updateLastModifiedSQL

Fields inherited from interface org.apache.jackrabbit.core.fs.FileSystem

SEPARATOR, SEPARATOR_CHAR

Constructor Summary

DerbyFileSystem()
Creates a new DerbyFileSystem instance.

Method Summary

void	close() Close the file system.
protected ConnectionHelper	createConnectionHelper(DataSource dataSrc) This method is called from the #init(PMContext) method of this class and returns a ConnectionHelper instance which is assigned to the conHelper field.
boolean	getShutdownOnClose()
void	setShutdownOnClose(boolean shutdownOnClose)

Methods inherited from class org.apache.jackrabbit.core.fs.db.DbFileSystem

equals, getDataSource, getDataSourceName, getDriver, getPassword, getUrl, getUser, hashCode, setConnectionFactory, setDataSourceName, setDriver, setPassword, setUrl, setUser

Methods inherited from class org.apache.jackrabbit.core.fs.db.DatabaseFileSystem

buildSQLStatements, createCheckSchemaOperation, createDeepFolder, createFolder, deleteFile, deleteFolder, exists, getInputStream, getOutputStream, getSchema, getSchemaObjectPrefix, hasChildren, init, isFile, isFolder, isSchemaCheckEnabled, lastModified, length, list, listFiles, listFolders, setSchema, setSchemaCheckEnabled, setSchemaObjectPrefix, verifyRootExists

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Field Detail

shutdownOnClose

protected boolean shutdownOnClose

Flag indicating whether this derby database should be shutdown on close.

Constructor Detail

DerbyFileSystem

public DerbyFileSystem()

Creates a new DerbyFileSystem instance.

Method Detail

getShutdownOnClose

public boolean getShutdownOnClose()

setShutdownOnClose

public void setShutdownOnClose(boolean shutdownOnClose)

createConnectionHelper

protected ConnectionHelper createConnectionHelper(DataSource dataSrc)
                                           throws Exception

This method is called from the #init(PMContext) method of this class and returns a ConnectionHelper instance which is assigned to the conHelper field. Subclasses may override it to return a specialized connection helper.

Overrides:

createConnectionHelper in class DatabaseFileSystem

Parameters:

dataSrc - the DataSource of this persistence manager

Returns:

a ConnectionHelper

Throws:

Exception - on error

close

public void close()
           throws FileSystemException

Close the file system. After calling this method, the file system is no longer accessible.

Specified by:

close in interface FileSystem

Overrides:

close in class DatabaseFileSystem

Throws:

FileSystemException