Package org.jppf.node.policy

Class Preference

java.lang.Object

org.jppf.node.policy.ExecutionPolicy

org.jppf.node.policy.LogicalRule

org.jppf.node.policy.Preference

All Implemented Interfaces:

Serializable

public class Preference
extends LogicalRule

A policy which evaluates a set of policies ordered by preference.

Author:

Laurent Cohen

See Also:

• Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.jppf.node.policy.ExecutionPolicy

ExecutionPolicy.AndRule, ExecutionPolicy.NotRule, ExecutionPolicy.OrRule, ExecutionPolicy.XorRule

Field Summary

Fields inherited from class org.jppf.node.policy.ExecutionPolicy

children

Constructor Summary

Constructors

Constructor	Description
Preference(List<ExecutionPolicy> policies)	Initialize this policy with the specified array of children policies.
Preference(ExecutionPolicy... policies)	Initialize this policy with the specified array of children policies.

Method Summary

Modifier and Type	Method	Description
boolean	accepts(PropertiesCollection<String> info)	Determines whether this policy accepts the specified node.
String	toString(int n)	Print this object to a string.

Methods inherited from class org.jppf.node.policy.LogicalRule

checkRules

Methods inherited from class org.jppf.node.policy.ExecutionPolicy

and, and, andNot, andNot, evaluate, getChildren, getContext, getProperty, indent, negate, not, Not, or, or, orNot, orNot, setContext, setContext, tagEnd, tagStart, toString, toXML, xmlElement, xmlElement, xor, xor

Methods inherited from class java.lang.Object

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

Constructor Details

Preference

public Preference(ExecutionPolicy... policies)

Initialize this policy with the specified array of children policies.

Parameters:

policies - the polcies in order of preference.

Preference

public Preference(List<ExecutionPolicy> policies)

Initialize this policy with the specified array of children policies.

Parameters:

policies - the polcies in order of preference.

Method Details

accepts

public boolean accepts(PropertiesCollection<String> info)

Description copied from class: ExecutionPolicy

Determines whether this policy accepts the specified node. This method must be overriden in subclasses.

Specified by:

accepts in class ExecutionPolicy

Parameters:

info - system information for the node on which the tasks will run if accepted.

Returns:

true if the node is accepted, false otherwise.

toString

public String toString(int n)

Description copied from class: LogicalRule

Print this object to a string.

Overrides:

toString in class LogicalRule

Parameters:

n - the size of the indent to startwith.

Returns:

an XML string representation of this object