Package org.rumbledb.expressions

Enum Class ExpressionClassification

java.lang.Object

java.lang.Enum<ExpressionClassification>

org.rumbledb.expressions.ExpressionClassification

All Implemented Interfaces:

Serializable, Comparable<ExpressionClassification>, Constable

public enum ExpressionClassification
extends Enum<ExpressionClassification>

An ExpressionClassification classifies an expression under 4 possible classifications. A BASIC_UPDATING expression is classified as 1 of 5 expressions in the update package, that can alter the state of an existing node. An UPDATING expression is classified as a BASIC_UPDATING expression or any expression (excluding a TransformExpression) that directly contains an UPDATING expression and that can alter the state of an existing node. A SIMPLE expression is classified as an expression that is not an updating expression. A VACUOUS expression follows the definition of the XQuery Update Facility 1.0, but is largely classified as an expression that can be determined statically to return an empty sequence or raise an error.

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
BASIC_UPDATING
SIMPLE
UNSET
UPDATING
VACUOUS

Method Summary

Modifier and Type	Method	Description
boolean	isSimple()
boolean	isUnset()
boolean	isUpdating()
boolean	isVacuous()
String	toString()
static ExpressionClassification	valueOf(String name)	Returns the enum constant of this class with the specified name.
static ExpressionClassification[]	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, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Details

UNSET

public static final ExpressionClassification UNSET

BASIC_UPDATING

public static final ExpressionClassification BASIC_UPDATING

UPDATING

public static final ExpressionClassification UPDATING

SIMPLE

public static final ExpressionClassification SIMPLE

VACUOUS

public static final ExpressionClassification VACUOUS

Method Details

values

public static ExpressionClassification[] 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 ExpressionClassification 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

isUnset

public boolean isUnset()

isUpdating

public boolean isUpdating()

isSimple

public boolean isSimple()

isVacuous

public boolean isVacuous()

toString

public String toString()

Overrides:

toString in class Enum<ExpressionClassification>