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

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

All Implemented Interfaces:

FileSystem

Direct Known Subclasses:

DB2FileSystem, DerbyFileSystem, OracleFileSystem

public class DbFileSystem
extends DatabaseFileSystem

DbFileSystem is a generic JDBC-based FileSystem implementation for Jackrabbit that persists file system entries in a database table.

It is configured through the following properties:

• driver: the FQN name of the JDBC driver class
• url: the database url of the form jdbc:subprotocol:subname
• user: the database user
• password: the user's password
• schema: type of schema to be used (e.g. mysql, mssql, etc.);
• schemaObjectPrefix: prefix to be prepended to schema objects

The required schema objects are automatically created by executing the DDL statements read from the [schema].ddl file. The .ddl file is read from the resources by calling getClass().getResourceAsStream(schema + ".ddl"). Every line in the specified .ddl file is executed separatly by calling java.sql.Statement.execute(String) where every occurence of the the string "${schemaObjectPrefix}" has been replaced with the value of the property schemaObjectPrefix.

The following is a fragment from a sample configuration using MySQL:

   <FileSystem class="org.apache.jackrabbit.core.fs.db.DbFileSystem">
       <param name="driver" value="com.mysql.jdbc.Driver"/>
       <param name="url" value="jdbc:mysql:///test?autoReconnect=true"/>
       <param name="schema" value="mysql"/>
       <param name="schemaObjectPrefix" value="rep_"/>
   </FileSystem>
 

The following is a fragment from a sample configuration using Daffodil One$DB Embedded:

   <FileSystem class="org.apache.jackrabbit.core.fs.db.DbFileSystem">
       <param name="driver" value="in.co.daffodil.db.jdbc.DaffodilDBDriver"/>
       <param name="url" value="jdbc:daffodilDB_embedded:rep;path=${rep.home}/databases;create=true"/>
       <param name="user" value="daffodil"/>
       <param name="password" value="daffodil"/>
       <param name="schema" value="daffodil"/>
       <param name="schemaObjectPrefix" value="rep_"/>
   </FileSystem>
 

The following is a fragment from a sample configuration using MSSQL:

   <FileSystem class="org.apache.jackrabbit.core.fs.db.DbFileSystem">
       <param name="driver" value="com.microsoft.jdbc.sqlserver.SQLServerDriver"/>
       <param name="url" value="jdbc:microsoft:sqlserver://localhost:1433;;DatabaseName=test;SelectMethod=Cursor;"/>
       <param name="schema" value="mssql"/>
       <param name="user" value="sa"/>
       <param name="password" value=""/>
       <param name="schemaObjectPrefix" value="rep_"/>
   </FileSystem>
 

The following is a fragment from a sample configuration using PostgreSQL:

   <FileSystem class="org.apache.jackrabbit.core.fs.db.DbFileSystem">
       <param name="driver" value="org.postgresql.Driver"/>
       <param name="url" value="jdbc:postgresql://localhost/test"/>
       <param name="schema" value="postgresql"/>
       <param name="user" value="postgres"/>
       <param name="password" value="postgres"/>
       <param name="schemaObjectPrefix" value="rep_"/>
   </FileSystem>
 

JNDI can be used to get the connection. In this case, use the javax.naming.InitialContext as the driver, and the JNDI name as the URL. If the user and password are configured in the JNDI resource, they should not be configured here. Example JNDI settings:

 <param name="driver" value="javax.naming.InitialContext" />
 <param name="url" value="java:comp/env/jdbc/Test" />
 

See also DerbyFileSystem, DB2FileSystem, OracleFileSystem.

Field Summary

protected java.lang.String	driver the full qualified JDBC driver name
protected java.lang.String	password the JDBC connection password
protected java.lang.String	url the JDBC connection URL
protected java.lang.String	user the JDBC connection user

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

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

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

SEPARATOR, SEPARATOR_CHAR

Constructor Summary

DbFileSystem()

Method Summary

boolean	equals(java.lang.Object obj)
protected java.sql.Connection	getConnection() Initialize the JDBC connection.
java.lang.String	getDriver()
java.lang.String	getPassword()
java.lang.String	getUrl()
java.lang.String	getUser()
int	hashCode() Returns zero to satisfy the Object equals/hashCode contract.
void	setDriver(java.lang.String driver)
void	setPassword(java.lang.String password)
void	setUrl(java.lang.String url)
void	setUser(java.lang.String user)

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

buildSQLStatements, checkSchema, close, closeConnection, closeResultSet, closeStatement, copy, copyDeepFolder, copyFile, createDeepFolder, createFolder, deleteFile, deleteFolder, executeStmt, exists, getInputStream, getOutputStream, getRandomAccessOutputStream, getSchema, getSchemaObjectPrefix, hasChildren, init, initConnection, initPreparedStatements, isFile, isFolder, lastModified, length, list, listFiles, listFolders, move, prepareSchemaObjectPrefix, reestablishConnection, resetStatement, setSchema, setSchemaObjectPrefix, touch, verifyRootExists

Methods inherited from class java.lang.Object

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

Field Detail

driver

protected java.lang.String driver

the full qualified JDBC driver name

url

protected java.lang.String url

the JDBC connection URL

user

protected java.lang.String user

the JDBC connection user

password

protected java.lang.String password

the JDBC connection password

Constructor Detail

DbFileSystem

public DbFileSystem()

Method Detail

getUrl

public java.lang.String getUrl()

setUrl

public void setUrl(java.lang.String url)

getUser

public java.lang.String getUser()

setUser

public void setUser(java.lang.String user)

getPassword

public java.lang.String getPassword()

setPassword

public void setPassword(java.lang.String password)

getDriver

public java.lang.String getDriver()

setDriver

public void setDriver(java.lang.String driver)

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class DatabaseFileSystem

hashCode

public int hashCode()

Returns zero to satisfy the Object equals/hashCode contract. This class is mutable and not meant to be used as a hash key.

Overrides:

hashCode in class DatabaseFileSystem

Returns:

always zero

See Also:

Object.hashCode()

getConnection

protected java.sql.Connection getConnection()
                                     throws javax.jcr.RepositoryException,
                                            java.sql.SQLException

Initialize the JDBC connection.

Overrides:

getConnection in class DatabaseFileSystem

Returns:

new connection

Throws:

java.sql.SQLException - if an error occurs

javax.jcr.RepositoryException