Class NotConstraint

java.lang.Object

io.fluxzero.common.api.search.constraints.NotConstraint

All Implemented Interfaces:

Constraint

public class NotConstraint
extends Object
implements Constraint

A constraint that negates the result of another constraint.

This is equivalent to a logical NOT. A document matches this constraint if it does not match the provided inner constraint.

Example: to find all documents that do not have a particular value:

Constraint notAdmin = NotConstraint.not(MatchConstraint.match("admin", "userRole"));

See Also:

• for logical AND
• for logical OR
• Constraint

Constructor Summary

Constructors

Constructor	Description
NotConstraint()

Method Summary

Modifier and Type	Method	Description
boolean	hasPathConstraint()	Indicates whether this constraint targets specific paths in the document.
boolean	matches(Document document)	Evaluates whether this constraint applies to the given document.
static NotConstraint	not(Constraint constraint)	Factory method to create a NotConstraint.

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface Constraint

and, decompose, or

Constructor Details

NotConstraint

public NotConstraint()

Method Details

not

public static NotConstraint not(Constraint constraint)

Factory method to create a NotConstraint.

Parameters:

constraint - the constraint to negate

Returns:

a constraint that matches if the input constraint does not match

matches

public boolean matches(Document document)

Description copied from interface: Constraint

Evaluates whether this constraint applies to the given document.

Specified by:

matches in interface Constraint

Parameters:

document - the document to test

Returns:

true if the constraint matches the document

hasPathConstraint

public boolean hasPathConstraint()

Description copied from interface: Constraint

Indicates whether this constraint targets specific paths in the document.

Specified by:

hasPathConstraint in interface Constraint

Returns:

true if path-based filtering is involved