er.neo4jadaptor.query.neo4j_eval

Enum Cost

java.lang.Object

java.lang.Enum<Cost>

er.neo4jadaptor.query.neo4j_eval.Cost

All Implemented Interfaces:

Serializable, Comparable<Cost>

public enum Cost
extends Enum<Cost>
implements Comparable<Cost>

Possible evaluation cost values. Lowest cost needs to be first, while the highest must be last.

Author:

Jedrzej Sobamski

Enum Constant Summary

Enum Constants

Enum Constant and Description
NONE Lowest possible
PRIMARY_KEY Doesn't access any properties or relationships
PROPERTIES Accessing properties, but not accessing relationships
RELATIONSHIPS Traversing relationships

Method Summary

Modifier and Type	Method and Description
static Cost	getHighest(Iterable<? extends HasCost> costs)
static Cost	highest()
static Cost	lowest()
static Cost	valueOf(String name) Returns the enum constant of this type with the specified name.
static Cost[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.lang.Comparable

compareTo

Enum Constant Detail

NONE

public static final Cost NONE

Lowest possible

PRIMARY_KEY

public static final Cost PRIMARY_KEY

Doesn't access any properties or relationships

PROPERTIES

public static final Cost PROPERTIES

Accessing properties, but not accessing relationships

RELATIONSHIPS

public static final Cost RELATIONSHIPS

Traversing relationships

Method Detail

values

public static Cost[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (Cost c : Cost.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static Cost valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null

highest

public static Cost highest()

lowest

public static Cost lowest()

getHighest

public static Cost getHighest(Iterable<? extends HasCost> costs)