net.jini.jeri.tcp

Class Constraints.Distilled

java.lang.Object

net.jini.jeri.tcp.Constraints.Distilled

Enclosing class:

Constraints

static class Constraints.Distilled
extends Object

A distillation of constraints to a form more directly usable by this provider.

Field Summary

Fields

Modifier and Type	Field and Description
private long	connectDeadline
private boolean	hasConnectDeadline
private boolean	relativeOK true if relative time constraints are allowed (in other words, not for client-side use)
private Collection	unfulfilledPreferences
private Collection	unfulfilledRequirements

Constructor Summary

Constructors

Constructor and Description
Distilled(InvocationConstraints constraints, boolean relativeOK)

Method Summary

Modifier and Type	Method and Description
private void	addAlternatives(ConstraintAlternatives constraint, boolean isRequirement) If "isRequirement" is true, throws an UnsupportedConstraintException if we do not support at least the transport layer aspects of at least one of the constraints in the given alternatives.
private void	addConnectDeadline(long deadline) Adds the given connect deadline to this object's state.
private void	addConstraint(InvocationConstraint constraint, boolean isRequirement) If "isRequirement" is true, throws an UnsupportedConstraintException if we do not support at least the transport layer aspects of the given constraint.
(package private) long	getConnectDeadline() Returns the absolute time of the socket connect deadline.
(package private) InvocationConstraints	getUnfulfilledConstraints() Returns the requirements and supported preferences that must be at least partially implemented by higher layers.
(package private) boolean	hasConnectDeadline() Returns true if a there is a socket connect deadline.

Methods inherited from class java.lang.Object

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

Field Detail

relativeOK

private final boolean relativeOK

true if relative time constraints are allowed (in other words, not for client-side use)

unfulfilledRequirements

private Collection unfulfilledRequirements

unfulfilledPreferences

private Collection unfulfilledPreferences

hasConnectDeadline

private boolean hasConnectDeadline

connectDeadline

private long connectDeadline

Constructor Detail

Distilled

Distilled(InvocationConstraints constraints,
          boolean relativeOK)
   throws UnsupportedConstraintException

Throws:

UnsupportedConstraintException

Method Detail

getUnfulfilledConstraints

InvocationConstraints getUnfulfilledConstraints()

Returns the requirements and supported preferences that must be at least partially implemented by higher layers.

hasConnectDeadline

boolean hasConnectDeadline()

Returns true if a there is a socket connect deadline.

getConnectDeadline

long getConnectDeadline()

Returns the absolute time of the socket connect deadline.

addConstraint

private void addConstraint(InvocationConstraint constraint,
                           boolean isRequirement)
                    throws UnsupportedConstraintException

If "isRequirement" is true, throws an UnsupportedConstraintException if we do not support at least the transport layer aspects of the given constraint. If we do support at least the transport layer aspects of the given constraint, then if appropriate, adds it to the collection of requirements or preferences that must be at least partially implemented by higher layers.

Throws:

UnsupportedConstraintException

addAlternatives

private void addAlternatives(ConstraintAlternatives constraint,
                             boolean isRequirement)
                      throws UnsupportedConstraintException

If "isRequirement" is true, throws an UnsupportedConstraintException if we do not support at least the transport layer aspects of at least one of the constraints in the given alternatives. If we do support at least the transport layer aspects of at least one of the constraints in the given alternatives, then if appropriate, adds a ConstraintAlternatives of the supported alternatives to the collection of requirements or preferences that must be at least partially implemented by higher layers. If all of the supported alternatives need at least partial implementation by higher layers, then adds a ConstraintAlternatives with all of the supported alternatives to the unfulfilled collection or preferences, because higher layers must support at least one of them. But if at least one of the supported alternatives can be fully satisfied by the transport layer, then add nothing to the unfulfilled collection, because it is possible that higher layers need not support any of them (and there is no way to express no constraint). The weakest connect deadline (with no deadline being the the weakest possibility) is chosen among alternatives.

Throws:

UnsupportedConstraintException

addConnectDeadline

private void addConnectDeadline(long deadline)

Adds the given connect deadline to this object's state. The earliest connect deadline is what gets remembered.