com.bea.p13n.security.realm
Class RDBMSDelegate

java.lang.Object
  |
  +--com.bea.p13n.security.realm.RDBMSDelegate

public class RDBMSDelegate

extends java.lang.Object

An instance of this class communicates with a single database connection. A pool of instances is then maintained by RDBMSRealm to provide high performance.

Field Summary

protected java.sql.Connection	conn The main connection to the database.
protected RDBMSRealm	realm The realm with which this delegate is associated.

Constructor Summary

protected

RDBMSDelegate(RDBMSRealm realm) Creates a new delegate associated with the given realm.

Method Summary

boolean	addGroupMember(RDBMSGroup group, java.security.Principal member) Add a member to a group.
void	close() Cleans up by closing all statements and connections.
protected void	close(java.sql.PreparedStatement stmt) Close a prepared statement
protected void	close(java.sql.ResultSet rs) Close a result set.
void	deleteGroup(RDBMSGroup group) Deletes a group from the database.
void	deleteUser(com.bea.p13n.security.realm.RDBMSUser user) Deletes a user from the database.
protected void	finalize() Cleans up.
java.security.acl.Group	getGroup(java.lang.String name) Gets the named group from the database.
java.util.Hashtable	getGroupMembers(RDBMSGroup group) Get the membership information for a group.
java.util.Enumeration	getGroups() Gets all groups from the database.
protected long	getNextGroupId() Get the next unique group id for a new group.
protected long	getNextUserId() Get the next unique user id for a new user.
java.security.Principal	getPrincipal(java.lang.String name) Resolves a name to a User or Group.
weblogic.security.acl.User	getUser(java.lang.String name) Gets a user from the database.
java.util.Enumeration	getUsers() Gets all users from the database.
boolean	isValid() Check to see if this delegate's connection is still open
java.security.acl.Group	newGroup(java.lang.String name) Create a new group record in the database.
weblogic.security.acl.User	newUser(java.lang.String name, java.lang.String passwd) Create a new user in the database.
protected java.sql.PreparedStatement	prepare(java.lang.String propKey) A shorthand convenience function for preparing an SQL statement.
boolean	removeGroupMember(RDBMSGroup group, java.security.Principal member) Remove a member from a group.
void	setPassword(java.lang.String name, java.lang.String password) Set the password for a user in the database.

Methods inherited from class java.lang.Object

clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

realm

protected RDBMSRealm realm

The realm with which this delegate is associated.

conn

protected java.sql.Connection conn

The main connection to the database.

Constructor Detail

RDBMSDelegate

protected RDBMSDelegate(RDBMSRealm realm)

Creates a new delegate associated with the given realm.

Throws:

RDBMSException - an error occurred in fetching properties or communicating with the database

Method Detail

prepare

protected java.sql.PreparedStatement prepare(java.lang.String propKey)
                                      throws java.sql.SQLException

A shorthand convenience function for preparing an SQL statement.

Parameters:

name - the name of the statement to prepare

isValid

public boolean isValid()

Check to see if this delegate's connection is still open

getUser

public weblogic.security.acl.User getUser(java.lang.String name)
                                   throws java.sql.SQLException

Gets a user from the database.

Parameters:

name - the username

Returns:

the User, or null if it was not found

getUsers

public java.util.Enumeration getUsers()
                               throws java.sql.SQLException

Gets all users from the database.

Returns:

an enumeration of Users

getGroup

public java.security.acl.Group getGroup(java.lang.String name)
                                 throws java.sql.SQLException

Gets the named group from the database.

Parameters:

name - the group name

Returns:

the Group object, or null if it was not found

getGroups

public java.util.Enumeration getGroups()
                                throws java.sql.SQLException

Gets all groups from the database. This does not populate their membership caches; the RDBMSGroup object retrieves this information on-demand, and when its cache expires.

Returns:

an Enumeration of Groups

getGroupMembers

public java.util.Hashtable getGroupMembers(RDBMSGroup group)
                                    throws java.sql.SQLException

Get the membership information for a group.

Parameters:

group - the group to query

Returns:

a hashtable of name->principal mappings

newUser

public weblogic.security.acl.User newUser(java.lang.String name,
                                          java.lang.String passwd)
                                   throws java.sql.SQLException,
                                          java.lang.SecurityException

Create a new user in the database. This method will call the static hash method on RDBMSUser to encrypt the password.

Parameters:

name - the new username

passwd - the user's password, *not* encrypted

Returns:

the new User object

Throws:

java.lang.SecurityException - if the user already exists

setPassword

public void setPassword(java.lang.String name,
                        java.lang.String password)
                 throws java.sql.SQLException,
                        java.lang.SecurityException

Set the password for a user in the database. This is intended to be called by an existing user object, who is responsible for encrypting the password beforehand.

Parameters:

name - the name of the user to update

password - the new password, already encrypted

Throws:

java.lang.SecurityException - if the user does not exist

newGroup

public java.security.acl.Group newGroup(java.lang.String name)
                                 throws java.sql.SQLException,
                                        java.lang.SecurityException

Create a new group record in the database.

Parameters:

the - new group name

Returns:

the Group object

Throws:

java.lang.SecurityException - if the group already exists

deleteUser

public void deleteUser(com.bea.p13n.security.realm.RDBMSUser user)
                throws java.sql.SQLException

Deletes a user from the database.

Parameters:

user - the user to delete

deleteGroup

public void deleteGroup(RDBMSGroup group)
                 throws java.sql.SQLException

Deletes a group from the database.

Parameters:

user - the user to delete

addGroupMember

public boolean addGroupMember(RDBMSGroup group,
                              java.security.Principal member)
                       throws java.sql.SQLException

Add a member to a group. The new member can be either a user or another group. This does NOT check to see if the member already belongs to the group; it is only meant to be called by the group object itself, via the realm, and it is assumed that the group performs this check.

Parameters:

group - the group to add a member to

member - the new group member

Returns:

true always

removeGroupMember

public boolean removeGroupMember(RDBMSGroup group,
                                 java.security.Principal member)
                          throws java.sql.SQLException

Remove a member from a group. Again, the member can be either a user or another group.

Parameters:

group - the group to remove from

member - the member to remove

Returns:

true always

getPrincipal

public java.security.Principal getPrincipal(java.lang.String name)
                                     throws java.sql.SQLException

Resolves a name to a User or Group. First attempts to find a user by that name, and then to find a group.

Returns:

the found Principal, or null if none was found

getNextUserId

protected long getNextUserId()
                      throws java.sql.SQLException

Get the next unique user id for a new user.

getNextGroupId

protected long getNextGroupId()
                       throws java.sql.SQLException

Get the next unique group id for a new group.

finalize

protected void finalize()

Cleans up.

Overrides:

finalize in class java.lang.Object

close

public void close()

Cleans up by closing all statements and connections.

close

protected void close(java.sql.PreparedStatement stmt)

Close a prepared statement

close

protected void close(java.sql.ResultSet rs)

Close a result set.