Package cdc.util.data.util

Interface AttributePredicate

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public interface AttributePredicate

Interface used to filter attributes.

Author:

Damien Carbonne

Field Summary

Fields

Modifier and Type	Field	Description
static AttributePredicate	ANY_ATTRIBUTE	An attribute predicate that always returns true.
static AttributePredicate	IS_EMPTY_ATTRIBUTE	An attribute predicate that returns true when an attribute value is null or empty.
static AttributePredicate	IS_NOT_EMPTY_ATTRIBUTE	An attribute predicate that returns true when an attribute value is neither null nor empty.

Method Summary

Modifier and Type	Method	Description
boolean	accepts(Element element, java.lang.String name, java.lang.String value)	Returns true when the attribute must be kept.
default AttributePredicate	and(AttributePredicate other)	Returns a predicate that is the logical and combination of this one and another one.
static AttributePredicate	fromNames(java.util.Collection<java.lang.String> names)	Returns an AttributePredicate that returns true when the attribute has a names belonging to a collection.
static AttributePredicate	fromPaths(java.util.Collection<SPath> paths)
default AttributePredicate	not()
default AttributePredicate	or(AttributePredicate other)	Returns a predicate that is the logical or combination of this one and another one.

Field Detail

ANY_ATTRIBUTE

static final AttributePredicate ANY_ATTRIBUTE

An attribute predicate that always returns true.

IS_EMPTY_ATTRIBUTE

static final AttributePredicate IS_EMPTY_ATTRIBUTE

An attribute predicate that returns true when an attribute value is null or empty.

IS_NOT_EMPTY_ATTRIBUTE

static final AttributePredicate IS_NOT_EMPTY_ATTRIBUTE

An attribute predicate that returns true when an attribute value is neither null nor empty.

Method Detail

accepts

boolean accepts(Element element,
                java.lang.String name,
                java.lang.String value)

Returns true when the attribute must be kept.

Parameters:

element - The element containing the attribute.

name - The attribute name.

value - The attribute value.

Returns:

True if attribute must be kept, false otherwise.

not

default AttributePredicate not()

Returns:

The negation of this predicate.

and

default AttributePredicate and(AttributePredicate other)

Returns a predicate that is the logical and combination of this one and another one.

Parameters:

other - The other predicate.

Returns:

A predicate that is the logical and combination of this one and other.

Throws:

java.lang.IllegalArgumentException - When other is null.

or

default AttributePredicate or(AttributePredicate other)

Returns a predicate that is the logical or combination of this one and another one.

Parameters:

other - The other predicate.

Returns:

A predicate that is the logical or combination of this one and other.

Throws:

java.lang.IllegalArgumentException - When other is null.

fromNames

static AttributePredicate fromNames(java.util.Collection<java.lang.String> names)

Returns an AttributePredicate that returns true when the attribute has a names belonging to a collection.

It is advised to use an efficient collection, typically a Set.

Parameters:

names - The collections of names. MUST NOT be null.

Returns:

A new instance of AttributePredicate that returns true when the attribute name belong to names.

Throws:

java.lang.IllegalArgumentException - When names is null.

fromPaths

static AttributePredicate fromPaths(java.util.Collection<SPath> paths)