pl.ais.commons.bean.validation.Validatable Maven / Gradle / Ivy
package pl.ais.commons.bean.validation;
import pl.ais.commons.bean.validation.constrainable.Constrainable;
import pl.ais.commons.bean.validation.event.ValidationListener;
import pl.ais.commons.domain.specification.Specifications;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;
import java.util.Arrays;
import java.util.function.Supplier;
/**
* Defines the API contract for validatable value.
*
* @param the type of the validatable values
* @author Warlock, AIS.PL
* @since 1.0.1
*/
public interface Validatable extends Supplier> {
static Validatable validatable(@Nonnull final Constrainable constrainable,
@Nonnull final ValidationListener listener,
@Nullable final Runnable callback) {
return new Validatable() {
/**
* {@inheritDoc}
*/
@Override
public Constrainable get() {
return constrainable;
}
/**
* {@inheritDoc}
*/
@Override
public boolean satisfies(@Nonnull final Constraint first, final Constraint... rest) {
try {
return first.apply(constrainable, listener) && Arrays.stream(rest)
.map(constraint -> constraint.apply(constrainable, listener))
.allMatch(Specifications.isEqual(true));
} finally {
if (null != callback) {
callback.run();
}
}
}
};
}
/**
* Verifies if this validatable satisfies given constraints.
*
* @param first constraint which should be satisfied
* @param rest remaining constraints which should be satisfied
* @return {@code true} if all constraints are satisfied by this validatable, {@code false} otherwise
*/
boolean satisfies(@Nonnull Constraint first, Constraint... rest);
}