Package netscape.ldap.util

Class ConnectionPool

java.lang.Object

netscape.ldap.util.ConnectionPool

public class ConnectionPool
extends java.lang.Object

Connection pool, typically used by a server to avoid creating a new connection for each client

Constructor Summary

Constructors

Constructor	Description
ConnectionPool(int min, int max, java.lang.String host, int port)	Constructor for specifying all parameters, anonymous identity
ConnectionPool(int min, int max, java.lang.String host, int port, java.lang.String authdn, java.lang.String authpw)	Constructor for specifying all parameters
ConnectionPool(int min, int max, LDAPConnection ldc)	Constructor for using an existing connection to clone from.
ConnectionPool(java.lang.String host, int port)	Constructor for using default parameters, anonymous identity

Method Summary

Modifier and Type	Method	Description
void	close(LDAPConnection ld)	This is our soft close - all we do is mark the connection as available for others to use.
void	destroy()	Destroy the whole pool - called during a shutdown
LDAPConnection	getConnection()	Gets a connection from the pool If no connections are available, the pool will be extended if the number of connections is less than the maximum; if the pool cannot be extended, the method blocks until a free connection becomes available.
LDAPConnection	getConnection(int timeout)	Gets a connection from the pool within a time limit.
protected LDAPConnection	getConnFromPool()	Gets a connection from the pool If no connections are available, the pool will be extended if the number of connections is less than the maximum; if the pool cannot be extended, the method returns null.
boolean	getDebug()	Reports the debug printout mode.
void	printPool()	Debug method to print the contents of the pool
void	setDebug(boolean mode)	Sets the debug printout mode.

Methods inherited from class java.lang.Object

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

Constructor Detail

ConnectionPool

public ConnectionPool(int min,
                      int max,
                      java.lang.String host,
                      int port,
                      java.lang.String authdn,
                      java.lang.String authpw)
               throws LDAPException

Constructor for specifying all parameters

Parameters:

min - initial number of connections

max - maximum number of connections

host - hostname of LDAP server

port - port number of LDAP server

authdn - DN to authenticate as

authpw - password for authentication

Throws:

LDAPException - on failure to create connections

ConnectionPool

public ConnectionPool(int min,
                      int max,
                      java.lang.String host,
                      int port)
               throws LDAPException

Constructor for specifying all parameters, anonymous identity

Parameters:

min - initial number of connections

max - maximum number of connections

host - hostname of LDAP server

port - port number of LDAP server

Throws:

LDAPException - on failure to create connections

ConnectionPool

public ConnectionPool(java.lang.String host,
                      int port)
               throws LDAPException

Constructor for using default parameters, anonymous identity

Parameters:

host - hostname of LDAP server

port - port number of LDAP server

Throws:

LDAPException - on failure to create connections

ConnectionPool

public ConnectionPool(int min,
                      int max,
                      LDAPConnection ldc)
               throws LDAPException

Constructor for using an existing connection to clone from.

The connection to clone must be already established and the user authenticated.

Parameters:

min - initial number of connections

max - maximum number of connections

ldc - connection to clone

Throws:

LDAPException - on failure to create connections

Method Detail

destroy

public void destroy()

Destroy the whole pool - called during a shutdown

getConnection

public LDAPConnection getConnection()

Gets a connection from the pool If no connections are available, the pool will be extended if the number of connections is less than the maximum; if the pool cannot be extended, the method blocks until a free connection becomes available.

Returns:

an active connection.

getConnection

public LDAPConnection getConnection(int timeout)

Gets a connection from the pool within a time limit. If no connections are available, the pool will be extended if the number of connections is less than the maximum; if the pool cannot be extended, the method blocks until a free connection becomes available or the time limit is exceeded.

Parameters:

timeout - timeout in milliseconds

Returns:

an active connection or null if timed out.

getConnFromPool

protected LDAPConnection getConnFromPool()

Gets a connection from the pool If no connections are available, the pool will be extended if the number of connections is less than the maximum; if the pool cannot be extended, the method returns null.

Returns:

an active connection or null.

close

public void close(LDAPConnection ld)

This is our soft close - all we do is mark the connection as available for others to use. We also reset the auth credentials in case they were changed by the caller.

Parameters:

ld - a connection to return to the pool

printPool

public void printPool()

Debug method to print the contents of the pool

setDebug

public void setDebug(boolean mode)

Sets the debug printout mode.

Parameters:

mode - debug mode to use

getDebug

public boolean getDebug()

Reports the debug printout mode.

Returns:

debug mode in use.