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

Enum Class LogicalOperator

java.lang.Object

java.lang.Enum<LogicalOperator>

org.gcube.informationsystem.resourceregistry.queries.operators.LogicalOperator

All Implemented Interfaces:

Serializable, Comparable<LogicalOperator>, Constable

public enum LogicalOperator
extends Enum<LogicalOperator>

Defines logical operators used to connect conditions in JSON queries.

Author:

Luca Frosini (ISTI - CNR)

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
AND	Logic AND operator.
NOT	Logic NOT operator.
OR	Logic OR operator.

Field Summary

Fields

Modifier and Type	Field	Description
protected final String	dbOperator	The underlying OrientDB database operator string.
protected final String	description	The human-readable description of the operator.
protected final String	operatorKey	The unique query operator key string.

Method Summary

Modifier and Type	Method	Description
String	getDbOperator()	Returns the underlying OrientDB database operator string.
String	getDescription()	Returns the human-readable description of the operator.
static LogicalOperator	getOperator(String key)	Resolves a LogicalOperator by its key.
String	getOperatorKey()	Returns the unique query operator key string.
static Set<String>	getOperators()	Returns the set of all registered logical operator keys.
static LogicalOperator	valueOf(String name)	Returns the enum constant of this class with the specified name.
static LogicalOperator[]	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

AND

public static final LogicalOperator AND

Logic AND operator.

OR

public static final LogicalOperator OR

Logic OR operator.

NOT

public static final LogicalOperator NOT

Logic NOT operator.

Field Details

operatorKey

protected final String operatorKey

The unique query operator key string.

dbOperator

protected final String dbOperator

The underlying OrientDB database operator string.

description

protected final String description

The human-readable description of the operator.

Method Details

values

public static LogicalOperator[] 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 LogicalOperator 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

getOperatorKey

public String getOperatorKey()

Returns the unique query operator key string.

Returns:

the operator key string

getDbOperator

public String getDbOperator()

Returns the underlying OrientDB database operator string.

Returns:

the OrientDB database operator string

getDescription

public String getDescription()

Returns the human-readable description of the operator.

Returns:

the description string

getOperators

public static Set<String> getOperators()

Returns the set of all registered logical operator keys.

Returns:

the set of operator keys

getOperator

public static LogicalOperator getOperator(String key)

Resolves a LogicalOperator by its key.

Parameters:

key - the operator key

Returns:

the resolved LogicalOperator, or null