org.eclipse.jetty.security

## Class JDBCLoginService

- java.lang.Object
- - org.eclipse.jetty.util.component.AbstractLifeCycle
  - - org.eclipse.jetty.security.MappedLoginService
    - - org.eclipse.jetty.security.JDBCLoginService

- All Implemented Interfaces:
    LoginService, LifeCycle

      public class JDBCLoginService
      extends MappedLoginService

  HashMapped User Realm with JDBC as data source. JDBCLoginService extends HashULoginService and adds a method to fetch user information from database. The login() method checks the inherited Map for the user. If the user is not found, it will fetch details from the database and populate the inherited Map. It then calls the superclass login() method to perform the actual authentication. Periodically (controlled by configuration parameter), internal hashes are cleared. Caching can be disabled by setting cache refresh interval to zero. Uses one database connection that is initialized at startup. Reconnect on failures. authenticate() is 'synchronized'. An example properties file for configuration is in $JETTY_HOME/etc/jdbcRealm.properties
  Version:
    $Id: JDBCLoginService.java 4792 2009-03-18 21:55:52Z gregw $

- - ### Nested Class Summary

    - ### Nested classes/interfaces inherited from class org.eclipse.jetty.security.MappedLoginService

      `MappedLoginService.Anonymous, MappedLoginService.KnownUser, MappedLoginService.RolePrincipal, MappedLoginService.UserPrincipal`

    - ### Nested classes/interfaces inherited from class org.eclipse.jetty.util.component.AbstractLifeCycle

      `AbstractLifeCycle.AbstractLifeCycleListener`

    - ### Nested classes/interfaces inherited from interface org.eclipse.jetty.util.component.LifeCycle

      `LifeCycle.Listener`

  - ### Field Summary

    - ### Fields inherited from class org.eclipse.jetty.security.MappedLoginService

      `_identityService, _name, _users`

    - ### Fields inherited from class org.eclipse.jetty.util.component.AbstractLifeCycle

      `_listeners, FAILED, RUNNING, STARTED, STARTING, STOPPED, STOPPING`

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `JDBCLoginService()`
    `JDBCLoginService(String name)`
    `JDBCLoginService(String name, IdentityService identityService, String config)`
    `JDBCLoginService(String name, String config)`

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `void` | `connectDatabase()` (re)Connect to database with parameters setup by loadConfig()
    `protected void` | `doStart()`
    `String` | `getConfig()`
    `protected UserIdentity` | `loadUser(String username)`
    `protected void` | `loadUsers()`
    `UserIdentity` | `login(String username, Object credentials)` Login a user.
    `void` | `setConfig(String config)` Load JDBC connection configuration from properties file.

    - ### Methods inherited from class org.eclipse.jetty.security.MappedLoginService

      `doStop, getIdentityService, getName, getUsers, logout, putUser, putUser, removeUser, setIdentityService, setName, setUsers, toString, validate`

    - ### Methods inherited from class org.eclipse.jetty.util.component.AbstractLifeCycle

      `addLifeCycleListener, getState, getState, isFailed, isRunning, isStarted, isStarting, isStopped, isStopping, removeLifeCycleListener, start, stop`

    - ### Methods inherited from class java.lang.Object

      `clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait`

- - ### Constructor Detail

    - #### JDBCLoginService

          public JDBCLoginService()
                           throws IOException

      Throws:
        `IOException`

    - #### JDBCLoginService

          public JDBCLoginService(String name)
                           throws IOException

      Throws:
        `IOException`

    - #### JDBCLoginService

          public JDBCLoginService(String name,
                          String config)
                           throws IOException

      Throws:
        `IOException`

    - #### JDBCLoginService

          public JDBCLoginService(String name,
                          IdentityService identityService,
                          String config)
                           throws IOException

      Throws:
        `IOException`

  - ### Method Detail

    - #### doStart

          protected void doStart()
                          throws Exception

      Overrides:
        `doStart` in class `MappedLoginService`
      Throws:
        `Exception`
      See Also:
        `MappedLoginService.doStart()`

    - #### getConfig

          public String getConfig()

    - #### setConfig

          public void setConfig(String config)

      Load JDBC connection configuration from properties file.
      Parameters:
        `config` - Filename or url of user properties file.

    - #### connectDatabase

          public void connectDatabase()

      (re)Connect to database with parameters setup by loadConfig()

    - #### login

          public UserIdentity login(String username,
                           Object credentials)

      Description copied from interface: `LoginService`
      Login a user.
      Specified by:
        `login` in interface `LoginService`
      Overrides:
        `login` in class `MappedLoginService`
      Parameters:
        `username` - The user name
        `credentials` - The users credentials
      Returns:
        A UserIdentity if the credentials matched, otherwise null
      See Also:
        `LoginService.login(java.lang.String, java.lang.Object)`

    - #### loadUsers

          protected void loadUsers()

      Specified by:
        `loadUsers` in class `MappedLoginService`

    - #### loadUser

          protected UserIdentity loadUser(String username)

      Specified by:
        `loadUser` in class `MappedLoginService`

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