com.bigdata.jini.start.config
Class AbstractHostConstraint

java.lang.Object
  com.bigdata.jini.start.config.AbstractHostConstraint

All Implemented Interfaces:

IServiceConstraint, Serializable

Direct Known Subclasses:

HostAllowConstraint, HostRejectConstraint

public abstract class AbstractHostConstraint
extends Object
implements IServiceConstraint

Core impl.

Version:

$Id$

Author:

Bryan Thompson

See Also:

Serialized Form

TODO:

do a variant based on InetAddress. This might allow the direct specification of a subnet.

Field Summary

protected static boolean	DEBUG
protected String[]	hosts
protected static boolean	INFO
protected static org.apache.log4j.Logger	log

Constructor Summary

AbstractHostConstraint(String host)

AbstractHostConstraint(String[] hosts)

Method Summary

abstract boolean	allow()
protected boolean	allow(boolean accept)
boolean	allow(JiniFederation ignored) Return true iff a service may be instantiated on this host.
static boolean	isLocalHost(String hostname) Return true if hostname is a name for the local host.
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

log

protected static final org.apache.log4j.Logger log

INFO

protected static final boolean INFO

DEBUG

protected static final boolean DEBUG

hosts

protected final String[] hosts

Constructor Detail

AbstractHostConstraint

public AbstractHostConstraint(String host)
                       throws UnknownHostException

Throws:

UnknownHostException

AbstractHostConstraint

public AbstractHostConstraint(String[] hosts)
                       throws UnknownHostException

Throws:

UnknownHostException

Method Detail

toString

public String toString()

Overrides:

toString in class Object

allow

protected boolean allow(boolean accept)

isLocalHost

public static final boolean isLocalHost(String hostname)
                                 throws UnknownHostException

Return true if hostname is a name for the local host.

Parameters:

hostname - A host name.

Throws:

UnknownHostException

allow

public abstract boolean allow()

allow

public boolean allow(JiniFederation ignored)

Description copied from interface: IServiceConstraint

Return true iff a service may be instantiated on this host.

Note: Constraints which can be evaluated without the federation reference MUST NOT throw an exception if that reference is null. This allows us to evaluate constraints for boostrap services as well as for ManagedServiceConfigurations

Specified by:

allow in interface IServiceConstraint

Parameters:

ignored - The federation.