Module com.darkcollective.relix.ast

Package com.darkcollective.relix.ast

Enum Class ComparisonOperator

java.lang.Object

java.lang.Enum<ComparisonOperator>

com.darkcollective.relix.ast.ComparisonOperator

All Implemented Interfaces:

Serializable, Comparable<ComparisonOperator>, Constable

public enum ComparisonOperator
extends Enum<ComparisonOperator>

Binary comparison operators used in ComparisonPredicate.

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
EQUAL	Equality (=).
GREATER	Strict greater-than (>).
GREATER_EQUAL	Greater-than-or-equal (≥).
LESS	Strict less-than (<).
LESS_EQUAL	Less-than-or-equal (≤).
NOT_EQUAL	Inequality (≠).

Method Summary

Modifier and Type	Method	Description
String	symbol()	The operator's canonical display symbol, in the Unicode form the language reference uses — =, ≠, <, ≤, >, ≥.
static ComparisonOperator	valueOf(String name)	Returns the enum constant of this class with the specified name.
static ComparisonOperator[]	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

EQUAL

public static final ComparisonOperator EQUAL

Equality (=).

NOT_EQUAL

public static final ComparisonOperator NOT_EQUAL

Inequality (≠).

LESS

public static final ComparisonOperator LESS

Strict less-than (<).

LESS_EQUAL

public static final ComparisonOperator LESS_EQUAL

Less-than-or-equal (≤).

GREATER

public static final ComparisonOperator GREATER

Strict greater-than (>).

GREATER_EQUAL

public static final ComparisonOperator GREATER_EQUAL

Greater-than-or-equal (≥).

Method Details

values

public static ComparisonOperator[] 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 ComparisonOperator 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

symbol

public String symbol()

The operator's canonical display symbol, in the Unicode form the language reference uses — =, ≠, <, ≤, >, ≥.

This is the single source of truth for rendering an operator to a human: the pretty-printer, the IR report (:tree), the physical plan printer (:explain), and optimizer trace messages all use it, so one predicate reads the same everywhere. These previously carried separate copies that had drifted — :tree showed a ≤ 5 while :explain showed a <= 5 for the same predicate.

Not for wire formats. A backend's spelling is that backend's concern: SqlExpressions emits SQL <= and MongoExpressions emits $lte, and both deliberately keep their own mapping.

Returns:

the display symbol; never null