Package org.opendaylight.yangtools.yang.model.api.stmt

Class IfFeatureExpr

java.lang.Object

org.opendaylight.yangtools.yang.model.api.stmt.IfFeatureExpr

All Implemented Interfaces:

Predicate<Set<QName>>, Immutable, MutationBehaviour<Immutable>

@Beta
public abstract class IfFeatureExpr
extends Object
implements Immutable, Predicate<Set<QName>>

A resolved if-feature expression, implementing a Predicate. Internal representation is that of a tree of expressions, optimized for memory usage. negate() performs an efficient logical negation without relying on default predicate methods. Other Predicate methods, like Predicate.and(Predicate) are not optimized in this implementation.

The set of features referenced in this expression is available through getReferencedFeatures().

Author:

Robert Varga

Constructor Summary

Constructors

Constructor	Description
IfFeatureExpr()

Method Summary

Modifier and Type	Method	Description
static @NonNull IfFeatureExpr	and(Set<IfFeatureExpr> exprs)	Construct a intersection (logical AND) expression of specified expressions.
abstract boolean	equals(Object obj)
abstract @NonNull Set<QName>	getReferencedFeatures()	Returns the set of all features referenced by this expression.
abstract int	hashCode()
static @NonNull IfFeatureExpr	isPresent(QName qname)	Construct an assertion that a feature is present in the set passed to test(Set).
abstract @NonNull IfFeatureExpr	negate()
static @NonNull IfFeatureExpr	or(Set<IfFeatureExpr> exprs)	Construct a union (logical OR) expression of specified expressions.
abstract boolean	test(Set<QName> supportedFeatures)
abstract String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.function.Predicate

and, or

Constructor Detail

IfFeatureExpr

public IfFeatureExpr()

Method Detail

isPresent

public static final @NonNull IfFeatureExpr isPresent(QName qname)

Construct an assertion that a feature is present in the set passed to test(Set).

Parameters:

qname - Feature QName

Returns:

An expression

Throws:

NullPointerException - if qname is null

and

public static final @NonNull IfFeatureExpr and(Set<IfFeatureExpr> exprs)

Construct a intersection (logical AND) expression of specified expressions.

Parameters:

exprs - Constituent expressions

Returns:

An expression

Throws:

NullPointerException - if exprs or any of its members is null

IllegalArgumentException - if exprs is empty

or

public static final @NonNull IfFeatureExpr or(Set<IfFeatureExpr> exprs)

Construct a union (logical OR) expression of specified expressions.

Parameters:

exprs - Constituent expressions

Returns:

An expression

Throws:

NullPointerException - if exprs or any of its members is null

IllegalArgumentException - if exprs is empty

getReferencedFeatures

public abstract @NonNull Set<QName> getReferencedFeatures()

Returns the set of all features referenced by this expression. Each feature is identified by its QName.

Returns:

The set of referenced features. Mutability of the returned Set and order of features is undefined.

negate

public abstract @NonNull IfFeatureExpr negate()

Specified by:

negate in interface Predicate<Set<QName>>

test

public abstract boolean test(Set<QName> supportedFeatures)

Specified by:

test in interface Predicate<Set<QName>>

hashCode

public abstract int hashCode()

Overrides:

hashCode in class Object

equals

public abstract boolean equals(Object obj)

Overrides:

equals in class Object

toString

public abstract String toString()

Overrides:

toString in class Object