Package org.gcube.informationsystem.resourceregistry.queries.operators

Enum Class ProjectionOperator

java.lang.Object

java.lang.Enum<ProjectionOperator>

org.gcube.informationsystem.resourceregistry.queries.operators.ProjectionOperator

All Implemented Interfaces:

Serializable, Comparable<ProjectionOperator>, Constable

public enum ProjectionOperator
extends Enum<ProjectionOperator>

Author:

Luca Frosini (ISTI - CNR) See https://www.orientdb.com/docs/3.0.x/sql/SQL-Where.html

Nested Class Summary

Nested classes/interfaces inherited from class java.lang.Enum

Enum.EnumDesc<E extends Enum<E>>

Enum Constant Summary

Enum Constants

Enum Constant	Description
EMIT	The emit projection operator.

Field Summary

Fields

Modifier and Type	Field	Description
protected final String	description	The operator description.
protected final String	operator	The operator key string.

Method Summary

Modifier and Type	Method	Description
String	getDescription()	Returns the operator description.
String	getOperator()	Returns the operator key.
static Set<String>	getOperators()	Returns the set of all recognized operator keys.
static ProjectionOperator	getQueryLogicalOperator(String key)	Returns the matching ProjectionOperator for the specified key.
static ProjectionOperator	valueOf(String name)	Returns the enum constant of this class with the specified name.
static ProjectionOperator[]	values()	Returns an array containing the constants of this enum class, in the order they are declared.

Methods inherited from class java.lang.Enum

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

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Details

EMIT

public static final ProjectionOperator EMIT

The emit projection operator.

Field Details

operator

protected final String operator

The operator key string.

description

protected final String description

The operator description.

Method Details

values

public static ProjectionOperator[] values()

Returns an array containing the constants of this enum class, in the order they are declared.

Returns:

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

valueOf

public static ProjectionOperator valueOf(String name)

Returns the enum constant of this class with the specified name. The string must match exactly an identifier used to declare an enum constant in this class. (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 class has no constant with the specified name

NullPointerException - if the argument is null

getOperator

public String getOperator()

Returns the operator key.

Returns:

the operator key string

getDescription

public String getDescription()

Returns the operator description.

Returns:

the operator description string

getOperators

public static Set<String> getOperators()

Returns the set of all recognized operator keys.

Returns:

the set of operator keys

getQueryLogicalOperator

public static ProjectionOperator getQueryLogicalOperator(String key)

Returns the matching ProjectionOperator for the specified key.

Parameters:

key - the operator key string

Returns:

the matching operator, or null if not found