JDBCStore (Apache Tomcat 7.0.109 API Documentation)

java.lang.Object
- org.apache.catalina.util.LifecycleBase
- - org.apache.catalina.session.StoreBase
  - - org.apache.catalina.session.JDBCStore

All Implemented Interfaces:

Lifecycle, Store
```
public class JDBCStore
extends StoreBase
```
Implementation of the Store interface that stores serialized session objects in a database. Sessions that are saved are still subject to being expired based on inactivity.

Author:

Bip Thelin

Nested Class Summary
- Nested classes/interfaces inherited from interface org.apache.catalina.Lifecycle
  Lifecycle.SingleUse

Field Summary

Fields
Modifier and Type	Field and Description
`protected String`	`connectionName` The connection username to use when trying to connect to the database.
`protected String`	`connectionPassword` The connection URL to use when trying to connect to the database.
`protected String`	`connectionURL` Connection string to use when connecting to the DB.
`protected DataSource`	`dataSource` DataSource to use
`protected String`	`dataSourceName` name of the JNDI resource
`protected Driver`	`driver` Instance of the JDBC Driver class we use as a connection factory.
`protected String`	`driverName` Driver to use.
`protected static String`	`info` The descriptive information about this implementation.
`protected PreparedStatement`	`preparedClearSql` Variable to hold the `clear()` prepared statement.
`protected PreparedStatement`	`preparedLoadSql` Variable to hold the `load()` prepared statement.
`protected PreparedStatement`	`preparedRemoveSql` Variable to hold the `remove()` prepared statement.
`protected PreparedStatement`	`preparedSaveSql` Variable to hold the `save()` prepared statement.
`protected PreparedStatement`	`preparedSizeSql` Variable to hold the `getSize()` prepared statement.
`protected String`	`sessionAppCol` Column to use for /Engine/Host/Context name
`protected String`	`sessionDataCol` Data column to use.
`protected String`	`sessionIdCol` Id column to use.
`protected String`	`sessionLastAccessedCol` Last Accessed column to use.
`protected String`	`sessionMaxInactiveCol` Max Inactive column to use.
`protected String`	`sessionTable` Table to use.
`protected String`	`sessionValidCol` `Is Valid` column to use.
`protected static String`	`storeName` Name to register for this Store, used for logging.
`protected String`	`threadName` Name to register for the background thread.

Fields inherited from class org.apache.catalina.session.StoreBase
manager, sm, support

Fields inherited from interface org.apache.catalina.Lifecycle
AFTER_DESTROY_EVENT, AFTER_INIT_EVENT, AFTER_START_EVENT, AFTER_STOP_EVENT, BEFORE_DESTROY_EVENT, BEFORE_INIT_EVENT, BEFORE_START_EVENT, BEFORE_STOP_EVENT, CONFIGURE_START_EVENT, CONFIGURE_STOP_EVENT, PERIODIC_EVENT, START_EVENT, STOP_EVENT

Constructor Summary

Constructors
Constructor and Description

JDBCStore()

Constructors
Constructor and Description
`JDBCStore()`

Method Summary

Methods
Modifier and Type	Method and Description
`void`	`clear()` Remove all of the Sessions in this Store.
`protected void`	`close(Connection dbConnection)` Close the specified database connection.
`String[]`	`expiredKeys()` Get only those keys of sessions, that are saved in the Store and are to be expired.
`protected Connection`	`getConnection()` Check the connection associated with this store, if it's `null` or closed try to reopen it.
`String`	`getConnectionName()`
`String`	`getConnectionPassword()`
`String`	`getConnectionURL()`
`String`	`getDataSourceName()`
`String`	`getDriverName()`
`String`	`getInfo()`
`String`	`getName()`
`String`	`getSessionAppCol()`
`String`	`getSessionDataCol()`
`String`	`getSessionIdCol()`
`String`	`getSessionLastAccessedCol()`
`String`	`getSessionMaxInactiveCol()`
`String`	`getSessionTable()`
`String`	`getSessionValidCol()`
`int`	`getSize()` Return an integer containing a count of all Sessions currently saved in this Store.
`String`	`getStoreName()`
`String`	`getThreadName()`
`String[]`	`keys()`
`Session`	`load(String id)` Load the Session associated with the id `id`.
`protected Connection`	`open()` Open (if necessary) and return a database connection for use by this Store.
`protected void`	`release(Connection conn)` Release the connection, if it is associated with a connection pool.
`void`	`remove(String id)` Remove the Session with the specified session identifier from this Store, if present.
`void`	`save(Session session)` Save a session to the Store.
`void`	`setConnectionName(String connectionName)` Set the username to use to connect to the database.
`void`	`setConnectionPassword(String connectionPassword)` Set the password to use to connect to the database.
`void`	`setConnectionURL(String connectionURL)` Set the Connection URL for this Store.
`void`	`setDataSourceName(String dataSourceName)` Set the JNDI name of a DataSource-factory to use for db access
`void`	`setDriverName(String driverName)` Set the driver for this Store.
`void`	`setSessionAppCol(String sessionAppCol)` Set the App column for the table.
`void`	`setSessionDataCol(String sessionDataCol)` Set the Data column for the table
`void`	`setSessionIdCol(String sessionIdCol)` Set the Id column for the table.
`void`	`setSessionLastAccessedCol(String sessionLastAccessedCol)` Set the `Last Accessed` column for the table
`void`	`setSessionMaxInactiveCol(String sessionMaxInactiveCol)` Set the `Max Inactive` column for the table
`void`	`setSessionTable(String sessionTable)` Set the table for this Store.
`void`	`setSessionValidCol(String sessionValidCol)` Set the `Is Valid` column for the table
`protected void`	`startInternal()` Start this component and implement the requirements of `LifecycleBase.startInternal()`.
`protected void`	`stopInternal()` Stop this component and implement the requirements of `LifecycleBase.stopInternal()`.

Methods inherited from class org.apache.catalina.session.StoreBase
addPropertyChangeListener, destroyInternal, getManager, getObjectInputStream, initInternal, processExpires, removePropertyChangeListener, setManager, toString

Methods inherited from class org.apache.catalina.util.LifecycleBase
addLifecycleListener, destroy, findLifecycleListeners, fireLifecycleEvent, getState, getStateName, getThrowOnFailure, init, removeLifecycleListener, setState, setState, setThrowOnFailure, start, stop

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Field Detail
  - info
```
protected static final String info
```
    The descriptive information about this implementation.
    
    See Also:
    Constant Field Values
  - storeName
```
protected static String storeName
```
    Name to register for this Store, used for logging.
  - threadName
```
protected String threadName
```
    Name to register for the background thread.
  - connectionName
```
protected String connectionName
```
    The connection username to use when trying to connect to the database.
  - connectionPassword
```
protected String connectionPassword
```
    The connection URL to use when trying to connect to the database.
  - connectionURL
```
protected String connectionURL
```
    Connection string to use when connecting to the DB.
  - driver
```
protected Driver driver
```
    Instance of the JDBC Driver class we use as a connection factory.
  - driverName
```
protected String driverName
```
    Driver to use.
  - dataSourceName
```
protected String dataSourceName
```
    name of the JNDI resource
  - dataSource
```
protected DataSource dataSource
```
    DataSource to use
  - sessionTable
```
protected String sessionTable
```
    Table to use.
  - sessionAppCol
```
protected String sessionAppCol
```
    Column to use for /Engine/Host/Context name
  - sessionIdCol
```
protected String sessionIdCol
```
    Id column to use.
  - sessionDataCol
```
protected String sessionDataCol
```
    Data column to use.
  - sessionValidCol
```
protected String sessionValidCol
```
    Is Valid column to use.
  - sessionMaxInactiveCol
```
protected String sessionMaxInactiveCol
```
    Max Inactive column to use.
  - sessionLastAccessedCol
```
protected String sessionLastAccessedCol
```
    Last Accessed column to use.
  - preparedSizeSql
```
protected PreparedStatement preparedSizeSql
```
    Variable to hold the getSize() prepared statement.
  - preparedSaveSql
```
protected PreparedStatement preparedSaveSql
```
    Variable to hold the save() prepared statement.
  - preparedClearSql
```
protected PreparedStatement preparedClearSql
```
    Variable to hold the clear() prepared statement.
  - preparedRemoveSql
```
protected PreparedStatement preparedRemoveSql
```
    Variable to hold the remove() prepared statement.
  - preparedLoadSql
```
protected PreparedStatement preparedLoadSql
```
    Variable to hold the load() prepared statement.
- Constructor Detail
  - JDBCStore
```
public JDBCStore()
```
- Method Detail
  - getInfo
```
public String getInfo()
```
    Specified by:
    
    getInfo in interface Store
    
    Overrides:
    
    getInfo in class StoreBase
    
    Returns:
    the info for this Store.
  - getName
```
public String getName()
```
    Returns:
    the name for this instance (built from container name)
  - getThreadName
```
public String getThreadName()
```
    Returns:
    the thread name for this Store.
  - getStoreName
```
public String getStoreName()
```
    Overrides:
    
    getStoreName in class StoreBase
    
    Returns:
    the name for this Store, used for logging.
  - setDriverName
```
public void setDriverName(String driverName)
```
    Set the driver for this Store.
    
    Parameters:
    driverName - The new driver
  - getDriverName
```
public String getDriverName()
```
    Returns:
    the driver for this Store.
  - getConnectionName
```
public String getConnectionName()
```
    Returns:
    the username to use to connect to the database.
  - setConnectionName
```
public void setConnectionName(String connectionName)
```
    Set the username to use to connect to the database.
    
    Parameters:
    connectionName - Username
  - getConnectionPassword
```
public String getConnectionPassword()
```
    Returns:
    the password to use to connect to the database.
  - setConnectionPassword
```
public void setConnectionPassword(String connectionPassword)
```
    Set the password to use to connect to the database.
    
    Parameters:
    connectionPassword - User password
  - setConnectionURL
```
public void setConnectionURL(String connectionURL)
```
    Set the Connection URL for this Store.
    
    Parameters:
    connectionURL - The new Connection URL
  - getConnectionURL
```
public String getConnectionURL()
```
    Returns:
    the Connection URL for this Store.
  - setSessionTable
```
public void setSessionTable(String sessionTable)
```
    Set the table for this Store.
    
    Parameters:
    sessionTable - The new table
  - getSessionTable
```
public String getSessionTable()
```
    Returns:
    the table for this Store.
  - setSessionAppCol
```
public void setSessionAppCol(String sessionAppCol)
```
    Set the App column for the table.
    
    Parameters:
    sessionAppCol - the column name
  - getSessionAppCol
```
public String getSessionAppCol()
```
    Returns:
    the web application name column for the table.
  - setSessionIdCol
```
public void setSessionIdCol(String sessionIdCol)
```
    Set the Id column for the table.
    
    Parameters:
    sessionIdCol - the column name
  - getSessionIdCol
```
public String getSessionIdCol()
```
    Returns:
    the Id column for the table.
  - setSessionDataCol
```
public void setSessionDataCol(String sessionDataCol)
```
    Set the Data column for the table
    
    Parameters:
    sessionDataCol - the column name
  - getSessionDataCol
```
public String getSessionDataCol()
```
    Returns:
    the data column for the table
  - setSessionValidCol
```
public void setSessionValidCol(String sessionValidCol)
```
    Set the Is Valid column for the table
    
    Parameters:
    sessionValidCol - The column name
  - getSessionValidCol
```
public String getSessionValidCol()
```
    Returns:
    the Is Valid column
  - setSessionMaxInactiveCol
```
public void setSessionMaxInactiveCol(String sessionMaxInactiveCol)
```
    Set the Max Inactive column for the table
    
    Parameters:
    sessionMaxInactiveCol - The column name
  - getSessionMaxInactiveCol
```
public String getSessionMaxInactiveCol()
```
    Returns:
    the Max Inactive column
  - setSessionLastAccessedCol
```
public void setSessionLastAccessedCol(String sessionLastAccessedCol)
```
    Set the Last Accessed column for the table
    
    Parameters:
    sessionLastAccessedCol - The column name
  - getSessionLastAccessedCol
```
public String getSessionLastAccessedCol()
```
    Returns:
    the Last Accessed column
  - setDataSourceName
```
public void setDataSourceName(String dataSourceName)
```
    Set the JNDI name of a DataSource-factory to use for db access
    
    Parameters:
    dataSourceName - The JNDI name of the DataSource-factory
  - getDataSourceName
```
public String getDataSourceName()
```
    Returns:
    the name of the JNDI DataSource-factory
  - expiredKeys
```
public String[] expiredKeys()
                     throws IOException
```
    Description copied from class: StoreBase
    
    Get only those keys of sessions, that are saved in the Store and are to be expired.
    
    Overrides:
    
    expiredKeys in class StoreBase
    
    Returns:
    list of session keys, that are to be expired
    
    Throws:
    
    IOException - if an input-/output error occurred
  - keys
```
public String[] keys()
              throws IOException
```
    Returns:
    an array containing the session identifiers of all Sessions currently saved in this Store. If there are no such Sessions, a zero-length array is returned.
    
    Throws:
    
    IOException - if an input/output error occurred
  - getSize
```
public int getSize()
            throws IOException
```
    Return an integer containing a count of all Sessions currently saved in this Store. If there are no Sessions, 0 is returned.
    
    Returns:
    the count of all sessions currently saved in this Store
    
    Throws:
    
    IOException - if an input/output error occurred
  - load
```
public Session load(String id)
             throws ClassNotFoundException,
                    IOException
```
    Load the Session associated with the id id. If no such session is found null is returned.
    
    Parameters:
    id - a value of type String
    
    Returns:
    the stored Session
    
    Throws:
    
    ClassNotFoundException - if an error occurs
    
    IOException - if an input/output error occurred
  - remove
```
public void remove(String id)
            throws IOException
```
    Remove the Session with the specified session identifier from this Store, if present. If no such Session is present, this method takes no action.
    
    Parameters:
    id - Session identifier of the Session to be removed
    
    Throws:
    
    IOException - if an input/output error occurs
  - clear
```
public void clear()
           throws IOException
```
    Remove all of the Sessions in this Store.
    
    Throws:
    
    IOException - if an input/output error occurs
  - save
```
public void save(Session session)
          throws IOException
```
    Save a session to the Store.
    
    Parameters:
    session - the session to be stored
    
    Throws:
    
    IOException - if an input/output error occurs
  - getConnection
```
protected Connection getConnection()
```
    Check the connection associated with this store, if it's null or closed try to reopen it. Returns null if the connection could not be established.
    
    Returns:
    Connection if the connection succeeded
  - open
```
protected Connection open()
                   throws SQLException
```
    Open (if necessary) and return a database connection for use by this Store.
    
    Returns:
    database connection ready to use
    
    Throws:
    
    SQLException - if a database error occurs
  - close
```
protected void close(Connection dbConnection)
```
    Close the specified database connection.
    
    Parameters:
    dbConnection - The connection to be closed
  - release
```
protected void release(Connection conn)
```
    Release the connection, if it is associated with a connection pool.
    
    Parameters:
    conn - The connection to be released
  - startInternal
```
protected void startInternal()
                      throws LifecycleException
```
    Start this component and implement the requirements of LifecycleBase.startInternal().
    
    Overrides:
    
    startInternal in class StoreBase
    
    Throws:
    
    LifecycleException - if this component detects a fatal error that prevents this component from being used
  - stopInternal
```
protected void stopInternal()
                     throws LifecycleException
```
    Stop this component and implement the requirements of LifecycleBase.stopInternal().
    
    Overrides:
    
    stopInternal in class StoreBase
    
    Throws:
    
    LifecycleException - if this component detects a fatal error that prevents this component from being used

Class JDBCStore

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.catalina.Lifecycle

Field Summary

Fields inherited from class org.apache.catalina.session.StoreBase

Fields inherited from interface org.apache.catalina.Lifecycle

Constructor Summary

Method Summary

Methods inherited from class org.apache.catalina.session.StoreBase

Methods inherited from class org.apache.catalina.util.LifecycleBase

Methods inherited from class java.lang.Object

Field Detail

info

storeName

threadName

connectionName

connectionPassword

connectionURL

driver

driverName

dataSourceName

dataSource

sessionTable

sessionAppCol

sessionIdCol

sessionDataCol

sessionValidCol

sessionMaxInactiveCol

sessionLastAccessedCol

preparedSizeSql

preparedSaveSql

preparedClearSql

preparedRemoveSql

preparedLoadSql

Constructor Detail

JDBCStore

Method Detail

getInfo

getName

getThreadName

getStoreName

setDriverName

getDriverName

getConnectionName

setConnectionName

getConnectionPassword

setConnectionPassword

setConnectionURL

getConnectionURL

setSessionTable

getSessionTable

setSessionAppCol

getSessionAppCol

setSessionIdCol

getSessionIdCol

setSessionDataCol

getSessionDataCol

setSessionValidCol

getSessionValidCol

setSessionMaxInactiveCol

getSessionMaxInactiveCol

setSessionLastAccessedCol

getSessionLastAccessedCol

setDataSourceName

getDataSourceName

expiredKeys

keys

getSize

load

remove

clear

save

getConnection

open

close

release

startInternal

stopInternal